From 643f35ac9ae5675e58effe78580b462c6f6286e5 Mon Sep 17 00:00:00 2001
From: Vladimir Razuvaev <vladimir.razuvaev@gmail.com>
Date: Tue, 27 Nov 2018 20:06:49 +0700
Subject: [PATCH] Deployed 4c545e5 with MkDocs version: 1.0.4

---
 404.html                                  |   28 +-
 best-practices/index.html                 |  221 ++
 complementary-tools/index.html            |   20 +-
 concepts/index.html                       |  340 +++
 css/highlight.css                         |  124 -
 css/theme_extra.css                       |    5 +-
 data-fetching/index.html                  |   18 +-
 error-handling/index.html                 |   18 +-
 executing-queries/index.html              |   22 +-
 getting-started/index.html                |   18 +-
 how-it-works/index.html                   |   18 +-
 index.html                                |   28 +-
 js/highlight.pack.js                      |    2 -
 js/theme.js                               |   36 +-
 reference/index.html                      |   18 +-
 search.html                               |   64 +-
 search/lunr.js                            | 2986 +++++++++++++++++++++
 search/lunr.min.js                        |    7 -
 search/main.js                            |   96 +
 search/mustache.min.js                    |    1 -
 search/require.js                         |   36 -
 search/search-results-template.mustache   |    4 -
 search/search.js                          |   92 -
 search/search_index.json                  |  625 +----
 search/text.js                            |  390 ---
 search/worker.js                          |  128 +
 security/index.html                       |   18 +-
 sitemap.xml                               |  123 +-
 sitemap.xml.gz                            |  Bin 0 -> 208 bytes
 type-system/directives/index.html         |   18 +-
 type-system/enum-types/index.html         |   18 +-
 type-system/index.html                    |   18 +-
 type-system/input-types/index.html        |   18 +-
 type-system/interfaces/index.html         |   18 +-
 type-system/lists-and-nonnulls/index.html |   18 +-
 type-system/object-types/index.html       |   18 +-
 type-system/scalar-types/index.html       |   18 +-
 type-system/schema/index.html             |   18 +-
 type-system/type-language/index.html      |   18 +-
 type-system/unions/index.html             |   18 +-
 40 files changed, 4071 insertions(+), 1613 deletions(-)
 create mode 100755 best-practices/index.html
 create mode 100755 concepts/index.html
 delete mode 100755 css/highlight.css
 delete mode 100755 js/highlight.pack.js
 create mode 100755 search/lunr.js
 delete mode 100755 search/lunr.min.js
 create mode 100755 search/main.js
 delete mode 100755 search/mustache.min.js
 delete mode 100755 search/require.js
 delete mode 100755 search/search-results-template.mustache
 delete mode 100755 search/search.js
 delete mode 100755 search/text.js
 create mode 100755 search/worker.js
 create mode 100755 sitemap.xml.gz

diff --git a/404.html b/404.html
index 5e10d0d..fd04d68 100755
--- a/404.html
+++ b/404.html
@@ -13,11 +13,12 @@
 
   <link rel="stylesheet" href="/css/theme.css" type="text/css" />
   <link rel="stylesheet" href="/css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="/css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
-  <script src="/js/jquery-2.1.1.min.js"></script>
-  <script src="/js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="/js/highlight.pack.js"></script> 
+  <script src="/js/jquery-2.1.1.min.js" defer></script>
+  <script src="/js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -28,10 +29,10 @@
     
     <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
       <div class="wy-side-nav-search">
-        <a href="/" class="icon icon-home"> graphql-php</a>
+        <a href="/." class="icon icon-home"> graphql-php</a>
         <div role="search">
-  <form id ="rtd-search-form" class="wy-form" action="/search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+  <form id ="rtd-search-form" class="wy-form" action="//search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -42,7 +43,7 @@
           
             <li class="toctree-l1">
 		
-    <a class="" href="/">About</a>
+    <a class="" href="/.">About</a>
 	    </li>
           
             <li class="toctree-l1">
@@ -146,7 +147,7 @@
       
       <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
         <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
-        <a href="/">graphql-php</a>
+        <a href="/.">graphql-php</a>
       </nav>
 
       
@@ -154,7 +155,7 @@
         <div class="rst-content">
           <div role="navigation" aria-label="breadcrumbs navigation">
   <ul class="wy-breadcrumbs">
-    <li><a href="/">Docs</a> &raquo;</li>
+    <li><a href="/.">Docs</a> &raquo;</li>
     
     
     <li class="wy-breadcrumbs-aside">
@@ -201,10 +202,9 @@
       
     </span>
 </div>
-    <script>var base_url = '';</script>
-    <script src="/js/theme.js"></script>
-      <script src="/search/require.js"></script>
-      <script src="/search/search.js"></script>
+    <script>var base_url = '/';</script>
+    <script src="/js/theme.js" defer></script>
+      <script src="/search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/best-practices/index.html b/best-practices/index.html
new file mode 100755
index 0000000..9250551
--- /dev/null
+++ b/best-practices/index.html
@@ -0,0 +1,221 @@
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  
+  
+  <link rel="shortcut icon" href="../img/favicon.ico">
+  <title>Type Registry - graphql-php</title>
+  <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+  <link rel="stylesheet" href="../css/theme.css" type="text/css" />
+  <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
+  
+  <script>
+    // Current page data
+    var mkdocs_page_name = "Type Registry";
+    var mkdocs_page_input_path = "best-practices.md";
+    var mkdocs_page_url = null;
+  </script>
+  
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
+  
+</head>
+
+<body class="wy-body-for-nav" role="document">
+
+  <div class="wy-grid-for-nav">
+
+    
+    <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
+      <div class="wy-side-nav-search">
+        <a href=".." class="icon icon-home"> graphql-php</a>
+        <div role="search">
+  <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
+  </form>
+</div>
+      </div>
+
+      <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+	<ul class="current">
+	  
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="..">About</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../getting-started/">Getting Started</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../complementary-tools/">Complementary Tools</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <span class="caption-text">Type Definitions</span>
+    <ul class="subnav">
+                <li class="">
+                    
+    <a class="" href="../type-system/">Introduction</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/object-types/">Object Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/scalar-types/">Scalar Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/enum-types/">Enumeration Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/lists-and-nonnulls/">Lists and Non-Null</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/interfaces/">Interfaces</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/unions/">Unions</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/input-types/">Mutations and Input Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/directives/">Directives</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/schema/">Schema</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/type-language/">Using Type Language</a>
+                </li>
+    </ul>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../executing-queries/">Executing Queries</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../data-fetching/">Fetching Data</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../error-handling/">Handling Errors</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../security/">Security</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../how-it-works/">How it works</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../reference/">Class Reference</a>
+	    </li>
+          
+        </ul>
+      </div>
+      &nbsp;
+    </nav>
+
+    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
+
+      
+      <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
+        <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+        <a href="..">graphql-php</a>
+      </nav>
+
+      
+      <div class="wy-nav-content">
+        <div class="rst-content">
+          <div role="navigation" aria-label="breadcrumbs navigation">
+  <ul class="wy-breadcrumbs">
+    <li><a href="..">Docs</a> &raquo;</li>
+    
+      
+    
+    <li>Type Registry</li>
+    <li class="wy-breadcrumbs-aside">
+      
+    </li>
+  </ul>
+  <hr/>
+</div>
+          <div role="main">
+            <div class="section">
+              
+                <h1 id="type-registry">Type Registry</h1>
+<p><strong>graphql-php</strong> expects that each type in Schema is presented by single instance. Therefore
+if you define your types as separate PHP classes you need to ensure that each type is referenced only once.</p>
+<p>Technically you can create several instances of your type (for example for tests), but <code>GraphQL\Type\Schema</code> 
+will throw on attempt to add different instances with the same name.</p>
+<p>There are several ways to achieve this depending on your preferences. We provide reference 
+implementation below that introduces TypeRegistry class:</p>
+              
+            </div>
+          </div>
+          <footer>
+  
+
+  <hr/>
+
+  <div role="contentinfo">
+    <!-- Copyright etc -->
+    
+  </div>
+
+  Built with <a href="http://www.mkdocs.org">MkDocs</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
+</footer>
+      
+        </div>
+      </div>
+
+    </section>
+
+  </div>
+
+  <div class="rst-versions" role="note" style="cursor: pointer">
+    <span class="rst-current-version" data-toggle="rst-current-version">
+      
+      
+      
+    </span>
+</div>
+    <script>var base_url = '..';</script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
+
+</body>
+</html>
diff --git a/complementary-tools/index.html b/complementary-tools/index.html
index 500e676..17a9209 100755
--- a/complementary-tools/index.html
+++ b/complementary-tools/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Complementary Tools";
     var mkdocs_page_input_path = "complementary-tools.md";
-    var mkdocs_page_url = "/complementary-tools/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -192,7 +193,7 @@
 <li><a href="https://github.com/ivome/graphql-relay-php">Integration with Relay</a></li>
 <li><a href="https://github.com/Folkloreatelier/laravel-graphql">Integration with Laravel 5</a> + <a href="https://github.com/nuwave/laravel-graphql-relay">Relay Helpers for Laravel</a> + <a href="https://github.com/nuwave/lighthouse">Nuwave Lighthouse</a></li>
 <li><a href="https://github.com/overblog/GraphQLBundle">Symfony Bundle</a> by Overblog</li>
-<li>Out of the box integration with any PSR-7 compatible framework (like <a href="http://slimframework.com">Slim</a> or <a href="http://zendframework.github.io/zend-expressive/">Zend Expressive</a>) via <a href="../executing-queries.md/#using-server">Standard Server</a></li>
+<li>Out of the box integration with any PSR-7 compatible framework (like <a href="http://slimframework.com">Slim</a> or <a href="http://zendframework.github.io/zend-expressive/">Zend Expressive</a>) via <a href="executing-queries.md/#using-server">Standard Server</a></li>
 </ul>
 <h1 id="graphql-php-tools">GraphQL PHP Tools</h1>
 <ul>
@@ -253,9 +254,8 @@
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/concepts/index.html b/concepts/index.html
new file mode 100755
index 0000000..bbd5b5f
--- /dev/null
+++ b/concepts/index.html
@@ -0,0 +1,340 @@
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  
+  
+  <link rel="shortcut icon" href="../img/favicon.ico">
+  <title>Overview - graphql-php</title>
+  <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+  <link rel="stylesheet" href="../css/theme.css" type="text/css" />
+  <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
+  
+  <script>
+    // Current page data
+    var mkdocs_page_name = "Overview";
+    var mkdocs_page_input_path = "concepts.md";
+    var mkdocs_page_url = null;
+  </script>
+  
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
+  
+</head>
+
+<body class="wy-body-for-nav" role="document">
+
+  <div class="wy-grid-for-nav">
+
+    
+    <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
+      <div class="wy-side-nav-search">
+        <a href=".." class="icon icon-home"> graphql-php</a>
+        <div role="search">
+  <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
+  </form>
+</div>
+      </div>
+
+      <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+	<ul class="current">
+	  
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="..">About</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../getting-started/">Getting Started</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../complementary-tools/">Complementary Tools</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <span class="caption-text">Type Definitions</span>
+    <ul class="subnav">
+                <li class="">
+                    
+    <a class="" href="../type-system/">Introduction</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/object-types/">Object Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/scalar-types/">Scalar Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/enum-types/">Enumeration Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/lists-and-nonnulls/">Lists and Non-Null</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/interfaces/">Interfaces</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/unions/">Unions</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/input-types/">Mutations and Input Types</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/directives/">Directives</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/schema/">Schema</a>
+                </li>
+                <li class="">
+                    
+    <a class="" href="../type-system/type-language/">Using Type Language</a>
+                </li>
+    </ul>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../executing-queries/">Executing Queries</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../data-fetching/">Fetching Data</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../error-handling/">Handling Errors</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../security/">Security</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../how-it-works/">How it works</a>
+	    </li>
+          
+            <li class="toctree-l1">
+		
+    <a class="" href="../reference/">Class Reference</a>
+	    </li>
+          
+        </ul>
+      </div>
+      &nbsp;
+    </nav>
+
+    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
+
+      
+      <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
+        <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+        <a href="..">graphql-php</a>
+      </nav>
+
+      
+      <div class="wy-nav-content">
+        <div class="rst-content">
+          <div role="navigation" aria-label="breadcrumbs navigation">
+  <ul class="wy-breadcrumbs">
+    <li><a href="..">Docs</a> &raquo;</li>
+    
+      
+    
+    <li>Overview</li>
+    <li class="wy-breadcrumbs-aside">
+      
+    </li>
+  </ul>
+  <hr/>
+</div>
+          <div role="main">
+            <div class="section">
+              
+                <h1 id="overview">Overview</h1>
+<p>GraphQL is data-centric. On the very top level it is built around three major concepts: 
+<strong>Schema</strong>, <strong>Query</strong> and <strong>Mutation</strong>.</p>
+<p>You are expected to express your application as <strong>Schema</strong> (aka Type System) and expose it
+with single HTTP endpoint (e.g. using our <a href="../executing-queries/#using-server">standard server</a>). 
+Application clients (e.g. web or mobile clients) send <strong>Queries</strong> 
+to this endpoint to request structured data and <strong>Mutations</strong> to perform changes (usually with HTTP POST method).</p>
+<h2 id="queries">Queries</h2>
+<p>Queries are expressed in simple language that resembles JSON:</p>
+<pre><code class="graphql">{
+  hero {
+    name
+    friends {
+      name
+    }
+  }
+}
+</code></pre>
+
+<p>It was designed to mirror the structure of expected response:</p>
+<pre><code class="json">{
+  &quot;hero&quot;: {
+    &quot;name&quot;: &quot;R2-D2&quot;,
+    &quot;friends&quot;: [
+      {&quot;name&quot;: &quot;Luke Skywalker&quot;},
+      {&quot;name&quot;: &quot;Han Solo&quot;},
+      {&quot;name&quot;: &quot;Leia Organa&quot;}
+    ]
+  }
+}
+</code></pre>
+
+<p><strong>graphql-php</strong> runtime parses Queries, makes sure that they are valid for given Type System 
+and executes using <a href="../data-fetching/">data fetching tools</a> provided by you 
+as a part of integration. Queries are supposed to be idempotent.</p>
+<h2 id="mutations">Mutations</h2>
+<p>Mutations use advanced features of the very same query language (like arguments and variables)<br />
+and have only semantic difference from Queries:</p>
+<pre><code class="graphql">mutation CreateReviewForEpisode($ep: Episode!, $review: ReviewInput!) {
+  createReview(episode: $ep, review: $review) {
+    stars
+    commentary
+  }
+}
+</code></pre>
+
+<p>Variables <code>$ep</code> and <code>$review</code> are sent alongside with mutation. Full HTTP request might look like this:</p>
+<pre><code class="json">// POST /graphql-endpoint
+// Content-Type: application/javascript
+// 
+{
+  &quot;query&quot;: &quot;mutation CreateReviewForEpisode...&quot;,
+  &quot;variables&quot;: {
+    &quot;ep&quot;: &quot;JEDI&quot;,
+    &quot;review&quot;: {
+      &quot;stars&quot;: 5,
+      &quot;commentary&quot;: &quot;This is a great movie!&quot;
+    }
+  }
+}
+</code></pre>
+
+<p>As you see variables may include complex objects and they will be correctly validated by 
+<strong>graphql-php</strong> runtime.</p>
+<p>Another nice feature of GraphQL mutations is that they also hold the query for data to be 
+returned after mutation. In our example mutation will return:</p>
+<pre><code>{
+  &quot;createReview&quot;: {
+    &quot;stars&quot;: 5,
+    &quot;commentary&quot;: &quot;This is a great movie!&quot;
+  }
+}
+</code></pre>
+
+<h1 id="type-system">Type System</h1>
+<p>Conceptually GraphQL type is a collection of fields. Each field in turn
+has it's own type which allows to build complex hierarchies.</p>
+<p>Quick example on pseudo-language:</p>
+<pre><code>type BlogPost {
+    title: String!
+    author: User
+    body: String
+}
+
+type User {
+    id: Id!
+    firstName: String
+    lastName: String
+}
+</code></pre>
+
+<p>Type system is a heart of GraphQL integration. That's where <strong>graphql-php</strong> comes into play.</p>
+<p>It provides following tools and primitives to describe your App as hierarchy of types:</p>
+<ul>
+<li>Primitives for defining <strong>objects</strong> and <strong>interfaces</strong></li>
+<li>Primitives for defining <strong>enumerations</strong> and <strong>unions</strong></li>
+<li>Primitives for defining custom <strong>scalar types</strong></li>
+<li>Built-in scalar types: <code>ID</code>, <code>String</code>, <code>Int</code>, <code>Float</code>, <code>Boolean</code></li>
+<li>Built-in type modifiers: <code>ListOf</code> and <code>NonNull</code></li>
+</ul>
+<p>Same example expressed in <strong>graphql-php</strong>:</p>
+<pre><code class="php">&lt;?php
+use GraphQL\Type\Definition\Type;
+use GraphQL\Type\Definition\ObjectType;
+
+$userType = new ObjectType([
+    'name' =&gt; 'User',
+    'fields' =&gt; [
+        'id' =&gt; Type::nonNull(Type::id()),
+        'firstName' =&gt; Type::string(),
+        'lastName' =&gt; Type::string()
+    ]
+]);
+
+$blogPostType = new ObjectType([
+    'name' =&gt; 'BlogPost',
+    'fields' =&gt; [
+        'title' =&gt; Type::nonNull(Type::string()),
+        'author' =&gt; $userType
+    ]
+]);
+</code></pre>
+
+<h1 id="further-reading">Further Reading</h1>
+<p>To get deeper understanding of GraphQL concepts - <a href="http://graphql.org/learn/">read the docs on official GraphQL website</a></p>
+<p>To get started with <strong>graphql-php</strong> - continue to next section <a href="../getting-started/">"Getting Started"</a></p>
+              
+            </div>
+          </div>
+          <footer>
+  
+
+  <hr/>
+
+  <div role="contentinfo">
+    <!-- Copyright etc -->
+    
+  </div>
+
+  Built with <a href="http://www.mkdocs.org">MkDocs</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
+</footer>
+      
+        </div>
+      </div>
+
+    </section>
+
+  </div>
+
+  <div class="rst-versions" role="note" style="cursor: pointer">
+    <span class="rst-current-version" data-toggle="rst-current-version">
+      
+      
+      
+    </span>
+</div>
+    <script>var base_url = '..';</script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
+
+</body>
+</html>
diff --git a/css/highlight.css b/css/highlight.css
deleted file mode 100755
index 0ae40a7..0000000
--- a/css/highlight.css
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
-This is the GitHub theme for highlight.js
-
-github.com style (c) Vasily Polovnyov <vast@whiteants.net>
-
-*/
-
-.hljs {
-  display: block;
-  overflow-x: auto;
-  color: #333;
-  -webkit-text-size-adjust: none;
-}
-
-.hljs-comment,
-.diff .hljs-header,
-.hljs-javadoc {
-  color: #998;
-  font-style: italic;
-}
-
-.hljs-keyword,
-.css .rule .hljs-keyword,
-.hljs-winutils,
-.nginx .hljs-title,
-.hljs-subst,
-.hljs-request,
-.hljs-status {
-  color: #333;
-  font-weight: bold;
-}
-
-.hljs-number,
-.hljs-hexcolor,
-.ruby .hljs-constant {
-  color: #008080;
-}
-
-.hljs-string,
-.hljs-tag .hljs-value,
-.hljs-phpdoc,
-.hljs-dartdoc,
-.tex .hljs-formula {
-  color: #d14;
-}
-
-.hljs-title,
-.hljs-id,
-.scss .hljs-preprocessor {
-  color: #900;
-  font-weight: bold;
-}
-
-.hljs-list .hljs-keyword,
-.hljs-subst {
-  font-weight: normal;
-}
-
-.hljs-class .hljs-title,
-.hljs-type,
-.vhdl .hljs-literal,
-.tex .hljs-command {
-  color: #458;
-  font-weight: bold;
-}
-
-.hljs-tag,
-.hljs-tag .hljs-title,
-.hljs-rule .hljs-property,
-.django .hljs-tag .hljs-keyword {
-  color: #000080;
-  font-weight: normal;
-}
-
-.hljs-attribute,
-.hljs-variable,
-.lisp .hljs-body,
-.hljs-name {
-  color: #008080;
-}
-
-.hljs-regexp {
-  color: #009926;
-}
-
-.hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.lisp .hljs-keyword,
-.clojure .hljs-keyword,
-.scheme .hljs-keyword,
-.tex .hljs-special,
-.hljs-prompt {
-  color: #990073;
-}
-
-.hljs-built_in {
-  color: #0086b3;
-}
-
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
-.hljs-doctype,
-.hljs-shebang,
-.hljs-cdata {
-  color: #999;
-  font-weight: bold;
-}
-
-.hljs-deletion {
-  background: #fdd;
-}
-
-.hljs-addition {
-  background: #dfd;
-}
-
-.diff .hljs-change {
-  background: #0086b3;
-}
-
-.hljs-chunk {
-  color: #aaa;
-}
diff --git a/css/theme_extra.css b/css/theme_extra.css
index cf8123e..ab107ba 100755
--- a/css/theme_extra.css
+++ b/css/theme_extra.css
@@ -128,8 +128,11 @@ pre .cs, pre .c {
  * Additions specific to the search functionality provided by MkDocs
  */
 
-.search-results article {
+.search-results {
     margin-top: 23px;
+}
+
+.search-results article {
     border-top: 1px solid #E1E4E5;
     padding-top: 24px;
 }
diff --git a/data-fetching/index.html b/data-fetching/index.html
index 63ec4fc..d8fcda2 100755
--- a/data-fetching/index.html
+++ b/data-fetching/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Fetching Data";
     var mkdocs_page_input_path = "data-fetching.md";
-    var mkdocs_page_url = "/data-fetching/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -476,9 +477,8 @@ $promise-&gt;then(function(ExecutionResult $result) {
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/error-handling/index.html b/error-handling/index.html
index 628c972..5a6207e 100755
--- a/error-handling/index.html
+++ b/error-handling/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Handling Errors";
     var mkdocs_page_input_path = "error-handling.md";
-    var mkdocs_page_url = "/error-handling/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -402,9 +403,8 @@ echo json_encode($body);
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/executing-queries/index.html b/executing-queries/index.html
index d01409f..6588b2e 100755
--- a/executing-queries/index.html
+++ b/executing-queries/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Executing Queries";
     var mkdocs_page_input_path = "executing-queries.md";
-    var mkdocs_page_url = "/executing-queries/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -330,7 +331,7 @@ $psrResponse = new SomePsr7ResponseImplementation(json_encode($result));
 <tr>
 <td>schema</td>
 <td><a href="../reference/#graphqltypeschema"><code>Schema</code></a></td>
-<td><strong>Required.</strong> Instance of your application <a href="../type-system/schema/">Schema</a></td>
+<td><strong>Required.</strong> Instance of your application <a href="type-system/schema/">Schema</a></td>
 </tr>
 <tr>
 <td>rootValue</td>
@@ -380,7 +381,7 @@ $psrResponse = new SomePsr7ResponseImplementation(json_encode($result));
 <tr>
 <td>promiseAdapter</td>
 <td><a href="../reference/#graphqlexecutorpromisepromiseadapter"><code>PromiseAdapter</code></a></td>
-<td>Required for <a href="../data-fetching/#async-php">Async PHP</a> only.</td>
+<td>Required for <a href="data-fetching/#async-php">Async PHP</a> only.</td>
 </tr>
 </tbody>
 </table>
@@ -516,9 +517,8 @@ $server = new StandardServer([
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/getting-started/index.html b/getting-started/index.html
index e17cbaf..316853f 100755
--- a/getting-started/index.html
+++ b/getting-started/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Getting Started";
     var mkdocs_page_input_path = "getting-started.md";
-    var mkdocs_page_url = "/getting-started/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -345,9 +346,8 @@ It is quite close to real-world GraphQL hierarchies. Follow instructions and try
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/how-it-works/index.html b/how-it-works/index.html
index 3c60119..27e1ade 100755
--- a/how-it-works/index.html
+++ b/how-it-works/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "How it works";
     var mkdocs_page_input_path = "how-it-works.md";
-    var mkdocs_page_url = "/how-it-works/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -264,9 +265,8 @@ and only <strong>errors</strong> key will be presented.</p>
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/index.html b/index.html
index cb26884..01dda74 100755
--- a/index.html
+++ b/index.html
@@ -7,24 +7,25 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <meta name="description" content="None">
   
-  <link rel="shortcut icon" href="./img/favicon.ico">
+  <link rel="shortcut icon" href="img/favicon.ico">
   <title>About - graphql-php</title>
   <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
 
-  <link rel="stylesheet" href="./css/theme.css" type="text/css" />
-  <link rel="stylesheet" href="./css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="./css/highlight.css">
+  <link rel="stylesheet" href="css/theme.css" type="text/css" />
+  <link rel="stylesheet" href="css/theme_extra.css" type="text/css" />
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "About";
     var mkdocs_page_input_path = "index.md";
-    var mkdocs_page_url = "/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="./js/jquery-2.1.1.min.js"></script>
-  <script src="./js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="./js/highlight.pack.js"></script> 
+  <script src="js/jquery-2.1.1.min.js" defer></script>
+  <script src="js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="./search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -274,14 +275,13 @@ existing PHP frameworks, add support for Relay, etc.</p>
     </span>
 </div>
     <script>var base_url = '.';</script>
-    <script src="./js/theme.js"></script>
-      <script src="./search/require.js"></script>
-      <script src="./search/search.js"></script>
+    <script src="js/theme.js" defer></script>
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FourierDCT FourierDCTFilter FourierDCTMatrix FourierDST FourierDSTMatrix FourierMatrix FourierParameters FourierSequenceTransform FourierSeries FourierSinCoefficient FourierSinSeries FourierSinTransform FourierTransform FourierTrigSeries FractionalBrownianMotionProcess FractionalPart FractionBox FractionBoxOptions FractionLine Frame FrameBox FrameBoxOptions Framed FrameInset FrameLabel Frameless FrameMargins FrameStyle FrameTicks FrameTicksStyle FRatioDistribution FrechetDistribution FreeQ FrequencySamplingFilterKernel FresnelC FresnelS Friday FrobeniusNumber FrobeniusSolve FromCharacterCode FromCoefficientRules FromContinuedFraction FromDate FromDigits FromDMS Front FrontEndDynamicExpression FrontEndEventActions FrontEndExecute FrontEndObject FrontEndResource FrontEndResourceString FrontEndStackSize FrontEndToken FrontEndTokenExecute FrontEndValueCache FrontEndVersion FrontFaceColor FrontFaceOpacity Full FullAxes FullDefinition FullForm FullGraphics FullOptions FullSimplify Function FunctionExpand FunctionInterpolation FunctionSpace FussellVeselyImportance GaborFilter GaborMatrix GaborWavelet GainMargins GainPhaseMargins Gamma GammaDistribution GammaRegularized GapPenalty Gather GatherBy GaugeFaceElementFunction GaugeFaceStyle GaugeFrameElementFunction GaugeFrameSize GaugeFrameStyle GaugeLabels GaugeMarkers GaugeStyle GaussianFilter GaussianIntegers GaussianMatrix GaussianWindow GCD GegenbauerC General GeneralizedLinearModelFit GenerateConditions GeneratedCell GeneratedParameters GeneratingFunction Generic GenericCylindricalDecomposition GenomeData GenomeLookup GeodesicClosing GeodesicDilation GeodesicErosion GeodesicOpening GeoDestination GeodesyData GeoDirection GeoDistance GeoGridPosition GeometricBrownianMotionProcess GeometricDistribution GeometricMean GeometricMeanFilter GeometricTransformation GeometricTransformation3DBox GeometricTransformation3DBoxOptions GeometricTransformationBox GeometricTransformationBoxOptions GeoPosition GeoPositionENU GeoPositionXYZ GeoProjectionData GestureHandler GestureHandlerTag Get GetBoundingBoxSizePacket GetContext GetEnvironment GetFileName GetFrontEndOptionsDataPacket GetLinebreakInformationPacket GetMenusPacket GetPageBreakInformationPacket Glaisher GlobalClusteringCoefficient GlobalPreferences GlobalSession Glow GoldenRatio GompertzMakehamDistribution GoodmanKruskalGamma GoodmanKruskalGammaTest Goto Grad Gradient GradientFilter GradientOrientationFilter Graph GraphAssortativity GraphCenter GraphComplement GraphData GraphDensity GraphDiameter GraphDifference GraphDisjointUnion GraphDistance GraphDistanceMatrix GraphElementData GraphEmbedding GraphHighlight GraphHighlightStyle GraphHub Graphics Graphics3D Graphics3DBox Graphics3DBoxOptions GraphicsArray GraphicsBaseline GraphicsBox GraphicsBoxOptions GraphicsColor GraphicsColumn GraphicsComplex GraphicsComplex3DBox GraphicsComplex3DBoxOptions GraphicsComplexBox GraphicsComplexBoxOptions GraphicsContents GraphicsData GraphicsGrid GraphicsGridBox GraphicsGroup GraphicsGroup3DBox GraphicsGroup3DBoxOptions GraphicsGroupBox GraphicsGroupBoxOptions GraphicsGrouping GraphicsHighlightColor GraphicsRow GraphicsSpacing GraphicsStyle GraphIntersection GraphLayout GraphLinkEfficiency GraphPeriphery GraphPlot GraphPlot3D GraphPower GraphPropertyDistribution GraphQ GraphRadius GraphReciprocity GraphRoot GraphStyle GraphUnion Gray GrayLevel GreatCircleDistance Greater GreaterEqual GreaterEqualLess GreaterFullEqual GreaterGreater GreaterLess GreaterSlantEqual GreaterTilde Green Grid GridBaseline GridBox GridBoxAlignment GridBoxBackground GridBoxDividers GridBoxFrame GridBoxItemSize GridBoxItemStyle GridBoxOptions GridBoxSpacings GridCreationSettings GridDefaultElement GridElementStyleOptions GridFrame GridFrameMargins GridGraph GridLines GridLinesStyle GroebnerBasis GroupActionBase GroupCentralizer GroupElementFromWord GroupElementPosition GroupElementQ GroupElements GroupElementToWord GroupGenerators GroupMultiplicationTable GroupOrbits GroupOrder GroupPageBreakWithin GroupSetwiseStabilizer GroupStabilizer GroupStabilizerChain Gudermannian GumbelDistribution HaarWavelet HadamardMatrix HalfNormalDistribution HamiltonianGraphQ HammingDistance HammingWindow HankelH1 HankelH2 HankelMatrix HannPoissonWindow HannWindow HaradaNortonGroupHN HararyGraph HarmonicMean HarmonicMeanFilter HarmonicNumber Hash HashTable Haversine HazardFunction Head HeadCompose Heads HeavisideLambda HeavisidePi HeavisideTheta HeldGroupHe HeldPart HelpBrowserLookup HelpBrowserNotebook HelpBrowserSettings HermiteDecomposition HermiteH HermitianMatrixQ HessenbergDecomposition Hessian HexadecimalCharacter Hexahedron HexahedronBox HexahedronBoxOptions HiddenSurface HighlightGraph HighlightImage HighpassFilter HigmanSimsGroupHS HilbertFilter HilbertMatrix Histogram Histogram3D HistogramDistribution HistogramList HistogramTransform HistogramTransformInterpolation HitMissTransform HITSCentrality HodgeDual HoeffdingD HoeffdingDTest Hold HoldAll HoldAllComplete HoldComplete HoldFirst HoldForm HoldPattern HoldRest HolidayCalendar HomeDirectory HomePage Horizontal HorizontalForm HorizontalGauge HorizontalScrollPosition HornerForm HotellingTSquareDistribution HoytDistribution HTMLSave Hue HumpDownHump HumpEqual HurwitzLerchPhi HurwitzZeta HyperbolicDistribution HypercubeGraph HyperexponentialDistribution Hyperfactorial Hypergeometric0F1 Hypergeometric0F1Regularized Hypergeometric1F1 Hypergeometric1F1Regularized Hypergeometric2F1 Hypergeometric2F1Regularized HypergeometricDistribution HypergeometricPFQ HypergeometricPFQRegularized HypergeometricU Hyperlink HyperlinkCreationSettings Hyphenation HyphenationOptions HypoexponentialDistribution HypothesisTestData I Identity IdentityMatrix If IgnoreCase Im Image Image3D Image3DSlices ImageAccumulate ImageAdd ImageAdjust ImageAlign ImageApply ImageAspectRatio ImageAssemble ImageCache ImageCacheValid ImageCapture ImageChannels ImageClip ImageColorSpace ImageCompose ImageConvolve ImageCooccurrence ImageCorners ImageCorrelate ImageCorrespondingPoints ImageCrop ImageData ImageDataPacket ImageDeconvolve ImageDemosaic ImageDifference ImageDimensions ImageDistance ImageEffect ImageFeatureTrack ImageFileApply ImageFileFilter ImageFileScan ImageFilter ImageForestingComponents ImageForwardTransformation ImageHistogram ImageKeypoints ImageLevels ImageLines ImageMargins ImageMarkers ImageMeasurements ImageMultiply ImageOffset ImagePad ImagePadding ImagePartition ImagePeriodogram ImagePerspectiveTransformation ImageQ ImageRangeCache ImageReflect ImageRegion ImageResize ImageResolution ImageRotate ImageRotated ImageScaled ImageScan ImageSize ImageSizeAction ImageSizeCache ImageSizeMultipliers ImageSizeRaw ImageSubtract ImageTake ImageTransformation ImageTrim ImageType ImageValue ImageValuePositions Implies Import ImportAutoReplacements ImportString ImprovementImportance In IncidenceGraph IncidenceList IncidenceMatrix IncludeConstantBasis IncludeFileExtension IncludePods IncludeSingularTerm Increment Indent IndentingNewlineSpacings IndentMaxFraction IndependenceTest IndependentEdgeSetQ IndependentUnit IndependentVertexSetQ Indeterminate IndexCreationOptions Indexed IndexGraph IndexTag Inequality InexactNumberQ InexactNumbers Infinity Infix Information Inherited InheritScope Initialization InitializationCell InitializationCellEvaluation InitializationCellWarning InlineCounterAssignments InlineCounterIncrements InlineRules Inner Inpaint Input InputAliases InputAssumptions InputAutoReplacements InputField InputFieldBox InputFieldBoxOptions InputForm InputGrouping InputNamePacket InputNotebook InputPacket InputSettings InputStream InputString InputStringPacket InputToBoxFormPacket Insert InsertionPointObject InsertResults Inset Inset3DBox Inset3DBoxOptions InsetBox InsetBoxOptions Install InstallService InString Integer IntegerDigits IntegerExponent IntegerLength IntegerPart IntegerPartitions IntegerQ Integers IntegerString Integral Integrate Interactive InteractiveTradingChart Interlaced Interleaving InternallyBalancedDecomposition InterpolatingFunction InterpolatingPolynomial Interpolation InterpolationOrder InterpolationPoints InterpolationPrecision Interpretation InterpretationBox InterpretationBoxOptions InterpretationFunction InterpretTemplate InterquartileRange Interrupt InterruptSettings Intersection Interval IntervalIntersection IntervalMemberQ IntervalUnion Inverse InverseBetaRegularized InverseCDF InverseChiSquareDistribution InverseContinuousWaveletTransform InverseDistanceTransform InverseEllipticNomeQ InverseErf InverseErfc InverseFourier InverseFourierCosTransform InverseFourierSequenceTransform InverseFourierSinTransform InverseFourierTransform InverseFunction InverseFunctions InverseGammaDistribution InverseGammaRegularized InverseGaussianDistribution InverseGudermannian InverseHaversine InverseJacobiCD InverseJacobiCN InverseJacobiCS InverseJacobiDC InverseJacobiDN InverseJacobiDS InverseJacobiNC InverseJacobiND InverseJacobiNS InverseJacobiSC InverseJacobiSD InverseJacobiSN InverseLaplaceTransform InversePermutation InverseRadon InverseSeries InverseSurvivalFunction InverseWaveletTransform InverseWeierstrassP InverseZTransform Invisible InvisibleApplication InvisibleTimes IrreduciblePolynomialQ IsolatingInterval IsomorphicGraphQ IsotopeData Italic Item ItemBox ItemBoxOptions ItemSize ItemStyle ItoProcess JaccardDissimilarity JacobiAmplitude Jacobian JacobiCD JacobiCN JacobiCS JacobiDC JacobiDN JacobiDS JacobiNC JacobiND JacobiNS JacobiP JacobiSC JacobiSD JacobiSN JacobiSymbol JacobiZeta JankoGroupJ1 JankoGroupJ2 JankoGroupJ3 JankoGroupJ4 JarqueBeraALMTest JohnsonDistribution Join Joined JoinedCurve JoinedCurveBox JoinForm JordanDecomposition JordanModelDecomposition K KagiChart KaiserBesselWindow KaiserWindow KalmanEstimator KalmanFilter KarhunenLoeveDecomposition KaryTree KatzCentrality KCoreComponents KDistribution KelvinBei KelvinBer KelvinKei KelvinKer KendallTau KendallTauTest KernelExecute KernelMixtureDistribution KernelObject Kernels Ket Khinchin KirchhoffGraph KirchhoffMatrix KleinInvariantJ KnightTourGraph KnotData KnownUnitQ KolmogorovSmirnovTest KroneckerDelta KroneckerModelDecomposition KroneckerProduct KroneckerSymbol KuiperTest KumaraswamyDistribution Kurtosis KuwaharaFilter Label Labeled LabeledSlider LabelingFunction LabelStyle LaguerreL LambdaComponents LambertW LanczosWindow LandauDistribution Language LanguageCategory LaplaceDistribution LaplaceTransform Laplacian LaplacianFilter LaplacianGaussianFilter Large Larger Last Latitude LatitudeLongitude LatticeData LatticeReduce Launch LaunchKernels LayeredGraphPlot LayerSizeFunction LayoutInformation LCM LeafCount LeapYearQ LeastSquares LeastSquaresFilterKernel Left LeftArrow LeftArrowBar LeftArrowRightArrow LeftDownTeeVector LeftDownVector LeftDownVectorBar LeftRightArrow LeftRightVector LeftTee LeftTeeArrow LeftTeeVector LeftTriangle LeftTriangleBar LeftTriangleEqual LeftUpDownVector LeftUpTeeVector LeftUpVector LeftUpVectorBar LeftVector LeftVectorBar LegendAppearance Legended LegendFunction LegendLabel LegendLayout LegendMargins LegendMarkers LegendMarkerSize LegendreP LegendreQ LegendreType Length LengthWhile LerchPhi Less LessEqual LessEqualGreater LessFullEqual LessGreater LessLess LessSlantEqual LessTilde LetterCharacter LetterQ Level LeveneTest LeviCivitaTensor LevyDistribution Lexicographic LibraryFunction LibraryFunctionError LibraryFunctionInformation LibraryFunctionLoad LibraryFunctionUnload LibraryLoad LibraryUnload LicenseID LiftingFilterData LiftingWaveletTransform LightBlue LightBrown LightCyan Lighter LightGray LightGreen Lighting LightingAngle LightMagenta LightOrange LightPink LightPurple LightRed LightSources LightYellow Likelihood Limit LimitsPositioning LimitsPositioningTokens LindleyDistribution Line Line3DBox LinearFilter LinearFractionalTransform LinearModelFit LinearOffsetFunction LinearProgramming LinearRecurrence LinearSolve LinearSolveFunction LineBox LineBreak LinebreakAdjustments LineBreakChart LineBreakWithin LineColor LineForm LineGraph LineIndent LineIndentMaxFraction LineIntegralConvolutionPlot LineIntegralConvolutionScale LineLegend LineOpacity LineSpacing LineWrapParts LinkActivate LinkClose LinkConnect LinkConnectedQ LinkCreate LinkError LinkFlush LinkFunction LinkHost LinkInterrupt LinkLaunch LinkMode LinkObject LinkOpen LinkOptions LinkPatterns LinkProtocol LinkRead LinkReadHeld LinkReadyQ Links LinkWrite LinkWriteHeld LiouvilleLambda List Listable ListAnimate ListContourPlot ListContourPlot3D ListConvolve ListCorrelate ListCurvePathPlot ListDeconvolve ListDensityPlot Listen ListFourierSequenceTransform ListInterpolation ListLineIntegralConvolutionPlot ListLinePlot ListLogLinearPlot ListLogLogPlot ListLogPlot ListPicker ListPickerBox ListPickerBoxBackground ListPickerBoxOptions ListPlay ListPlot ListPlot3D ListPointPlot3D ListPolarPlot ListQ ListStreamDensityPlot ListStreamPlot ListSurfacePlot3D ListVectorDensityPlot ListVectorPlot ListVectorPlot3D ListZTransform Literal LiteralSearch LocalClusteringCoefficient LocalizeVariables LocationEquivalenceTest LocationTest Locator LocatorAutoCreate LocatorBox LocatorBoxOptions LocatorCentering LocatorPane LocatorPaneBox LocatorPaneBoxOptions LocatorRegion Locked Log Log10 Log2 LogBarnesG LogGamma LogGammaDistribution LogicalExpand LogIntegral LogisticDistribution LogitModelFit LogLikelihood LogLinearPlot LogLogisticDistribution LogLogPlot LogMultinormalDistribution LogNormalDistribution LogPlot LogRankTest LogSeriesDistribution LongEqual Longest LongestAscendingSequence LongestCommonSequence LongestCommonSequencePositions LongestCommonSubsequence LongestCommonSubsequencePositions LongestMatch LongForm Longitude LongLeftArrow LongLeftRightArrow LongRightArrow Loopback LoopFreeGraphQ LowerCaseQ LowerLeftArrow LowerRightArrow LowerTriangularize LowpassFilter LQEstimatorGains LQGRegulator LQOutputRegulatorGains LQRegulatorGains LUBackSubstitution LucasL LuccioSamiComponents LUDecomposition LyapunovSolve LyonsGroupLy MachineID MachineName MachineNumberQ MachinePrecision MacintoshSystemPageSetup Magenta Magnification Magnify MainSolve MaintainDynamicCaches Majority MakeBoxes MakeExpression MakeRules MangoldtLambda ManhattanDistance Manipulate Manipulator MannWhitneyTest MantissaExponent Manual Map MapAll MapAt MapIndexed MAProcess MapThread MarcumQ MardiaCombinedTest MardiaKurtosisTest MardiaSkewnessTest MarginalDistribution MarkovProcessProperties Masking MatchingDissimilarity MatchLocalNameQ MatchLocalNames MatchQ Material MathematicaNotation MathieuC MathieuCharacteristicA MathieuCharacteristicB MathieuCharacteristicExponent MathieuCPrime MathieuGroupM11 MathieuGroupM12 MathieuGroupM22 MathieuGroupM23 MathieuGroupM24 MathieuS MathieuSPrime MathMLForm MathMLText Matrices MatrixExp MatrixForm MatrixFunction MatrixLog MatrixPlot MatrixPower MatrixQ MatrixRank Max MaxBend MaxDetect MaxExtraBandwidths MaxExtraConditions MaxFeatures MaxFilter Maximize MaxIterations MaxMemoryUsed MaxMixtureKernels MaxPlotPoints MaxPoints MaxRecursion MaxStableDistribution MaxStepFraction MaxSteps MaxStepSize MaxValue MaxwellDistribution McLaughlinGroupMcL Mean MeanClusteringCoefficient MeanDegreeConnectivity MeanDeviation MeanFilter MeanGraphDistance MeanNeighborDegree MeanShift MeanShiftFilter Median MedianDeviation MedianFilter Medium MeijerG MeixnerDistribution MemberQ MemoryConstrained MemoryInUse Menu MenuAppearance MenuCommandKey MenuEvaluator MenuItem MenuPacket MenuSortingValue MenuStyle MenuView MergeDifferences Mesh MeshFunctions MeshRange MeshShading MeshStyle Message MessageDialog MessageList MessageName MessageOptions MessagePacket Messages MessagesNotebook MetaCharacters MetaInformation Method MethodOptions MexicanHatWavelet MeyerWavelet Min MinDetect MinFilter MinimalPolynomial MinimalStateSpaceModel Minimize Minors MinRecursion MinSize MinStableDistribution Minus MinusPlus MinValue Missing MissingDataMethod MittagLefflerE MixedRadix MixedRadixQuantity MixtureDistribution Mod Modal Mode Modular ModularLambda Module Modulus MoebiusMu Moment Momentary MomentConvert MomentEvaluate MomentGeneratingFunction Monday Monitor MonomialList MonomialOrder MonsterGroupM MorletWavelet MorphologicalBinarize MorphologicalBranchPoints MorphologicalComponents MorphologicalEulerNumber MorphologicalGraph MorphologicalPerimeter MorphologicalTransform Most MouseAnnotation MouseAppearance MouseAppearanceTag MouseButtons Mouseover MousePointerNote MousePosition MovingAverage MovingMedian MoyalDistribution MultiedgeStyle MultilaunchWarning MultiLetterItalics MultiLetterStyle MultilineFunction Multinomial MultinomialDistribution MultinormalDistribution MultiplicativeOrder Multiplicity Multiselection MultivariateHypergeometricDistribution MultivariatePoissonDistribution MultivariateTDistribution N NakagamiDistribution NameQ Names NamespaceBox Nand NArgMax NArgMin NBernoulliB NCache NDSolve NDSolveValue Nearest NearestFunction NeedCurrentFrontEndPackagePacket NeedCurrentFrontEndSymbolsPacket NeedlemanWunschSimilarity Needs Negative NegativeBinomialDistribution NegativeMultinomialDistribution NeighborhoodGraph Nest NestedGreaterGreater NestedLessLess NestedScriptRules NestList NestWhile NestWhileList NevilleThetaC NevilleThetaD NevilleThetaN NevilleThetaS NewPrimitiveStyle NExpectation Next NextPrime NHoldAll NHoldFirst NHoldRest NicholsGridLines NicholsPlot NIntegrate NMaximize NMaxValue NMinimize NMinValue NominalVariables NonAssociative NoncentralBetaDistribution NoncentralChiSquareDistribution NoncentralFRatioDistribution NoncentralStudentTDistribution NonCommutativeMultiply NonConstants None NonlinearModelFit NonlocalMeansFilter NonNegative NonPositive Nor NorlundB Norm Normal NormalDistribution NormalGrouping Normalize NormalizedSquaredEuclideanDistance NormalsFunction NormFunction Not NotCongruent NotCupCap NotDoubleVerticalBar Notebook NotebookApply NotebookAutoSave NotebookClose NotebookConvertSettings NotebookCreate NotebookCreateReturnObject NotebookDefault NotebookDelete NotebookDirectory NotebookDynamicExpression NotebookEvaluate NotebookEventActions NotebookFileName NotebookFind NotebookFindReturnObject NotebookGet NotebookGetLayoutInformationPacket NotebookGetMisspellingsPacket NotebookInformation NotebookInterfaceObject NotebookLocate NotebookObject NotebookOpen NotebookOpenReturnObject NotebookPath NotebookPrint NotebookPut NotebookPutReturnObject NotebookRead NotebookResetGeneratedCells Notebooks NotebookSave NotebookSaveAs NotebookSelection NotebookSetupLayoutInformationPacket NotebooksMenu NotebookWrite NotElement NotEqualTilde NotExists NotGreater NotGreaterEqual NotGreaterFullEqual NotGreaterGreater NotGreaterLess NotGreaterSlantEqual NotGreaterTilde NotHumpDownHump NotHumpEqual NotLeftTriangle NotLeftTriangleBar NotLeftTriangleEqual NotLess NotLessEqual NotLessFullEqual NotLessGreater NotLessLess NotLessSlantEqual NotLessTilde NotNestedGreaterGreater NotNestedLessLess NotPrecedes NotPrecedesEqual NotPrecedesSlantEqual NotPrecedesTilde NotReverseElement NotRightTriangle NotRightTriangleBar NotRightTriangleEqual NotSquareSubset NotSquareSubsetEqual NotSquareSuperset NotSquareSupersetEqual NotSubset NotSubsetEqual NotSucceeds NotSucceedsEqual NotSucceedsSlantEqual NotSucceedsTilde NotSuperset NotSupersetEqual NotTilde NotTildeEqual NotTildeFullEqual NotTildeTilde NotVerticalBar NProbability NProduct NProductFactors NRoots NSolve NSum NSumTerms Null NullRecords NullSpace NullWords Number NumberFieldClassNumber NumberFieldDiscriminant NumberFieldFundamentalUnits NumberFieldIntegralBasis NumberFieldNormRepresentatives NumberFieldRegulator NumberFieldRootsOfUnity NumberFieldSignature NumberForm NumberFormat NumberMarks NumberMultiplier NumberPadding NumberPoint NumberQ NumberSeparator NumberSigns NumberString Numerator NumericFunction NumericQ NuttallWindow NValues NyquistGridLines NyquistPlot O ObservabilityGramian ObservabilityMatrix ObservableDecomposition ObservableModelQ OddQ Off Offset OLEData On ONanGroupON OneIdentity Opacity Open OpenAppend Opener OpenerBox OpenerBoxOptions OpenerView OpenFunctionInspectorPacket Opening OpenRead OpenSpecialOptions OpenTemporary OpenWrite Operate OperatingSystem OptimumFlowData Optional OptionInspectorSettings OptionQ Options OptionsPacket OptionsPattern OptionValue OptionValueBox OptionValueBoxOptions Or Orange Order OrderDistribution OrderedQ Ordering Orderless OrnsteinUhlenbeckProcess Orthogonalize Out Outer OutputAutoOverwrite OutputControllabilityMatrix OutputControllableModelQ OutputForm OutputFormData OutputGrouping OutputMathEditExpression OutputNamePacket OutputResponse OutputSizeLimit OutputStream Over OverBar OverDot Overflow OverHat Overlaps Overlay OverlayBox OverlayBoxOptions Overscript OverscriptBox OverscriptBoxOptions OverTilde OverVector OwenT OwnValues PackingMethod PaddedForm Padding PadeApproximant PadLeft PadRight PageBreakAbove PageBreakBelow PageBreakWithin PageFooterLines PageFooters PageHeaderLines PageHeaders PageHeight PageRankCentrality PageWidth PairedBarChart PairedHistogram PairedSmoothHistogram PairedTTest PairedZTest PaletteNotebook PalettePath Pane PaneBox PaneBoxOptions Panel PanelBox PanelBoxOptions Paneled PaneSelector PaneSelectorBox PaneSelectorBoxOptions PaperWidth ParabolicCylinderD ParagraphIndent ParagraphSpacing ParallelArray ParallelCombine ParallelDo ParallelEvaluate Parallelization Parallelize ParallelMap ParallelNeeds ParallelProduct ParallelSubmit ParallelSum ParallelTable ParallelTry Parameter ParameterEstimator ParameterMixtureDistribution ParameterVariables ParametricFunction ParametricNDSolve ParametricNDSolveValue ParametricPlot ParametricPlot3D ParentConnect ParentDirectory ParentForm Parenthesize ParentList ParetoDistribution Part PartialCorrelationFunction PartialD ParticleData Partition PartitionsP PartitionsQ ParzenWindow PascalDistribution PassEventsDown PassEventsUp Paste PasteBoxFormInlineCells PasteButton Path PathGraph PathGraphQ Pattern PatternSequence PatternTest PauliMatrix PaulWavelet Pause PausedTime PDF PearsonChiSquareTest PearsonCorrelationTest PearsonDistribution PerformanceGoal PeriodicInterpolation Periodogram PeriodogramArray PermutationCycles PermutationCyclesQ PermutationGroup PermutationLength PermutationList PermutationListQ PermutationMax PermutationMin PermutationOrder PermutationPower PermutationProduct PermutationReplace Permutations PermutationSupport Permute PeronaMalikFilter Perpendicular PERTDistribution PetersenGraph PhaseMargins Pi Pick PIDData PIDDerivativeFilter PIDFeedforward PIDTune Piecewise PiecewiseExpand PieChart PieChart3D PillaiTrace PillaiTraceTest Pink Pivoting PixelConstrained PixelValue PixelValuePositions Placed Placeholder PlaceholderReplace Plain PlanarGraphQ Play PlayRange Plot Plot3D Plot3Matrix PlotDivision PlotJoined PlotLabel PlotLayout PlotLegends PlotMarkers PlotPoints PlotRange PlotRangeClipping PlotRangePadding PlotRegion PlotStyle Plus PlusMinus Pochhammer PodStates PodWidth Point Point3DBox PointBox PointFigureChart PointForm PointLegend PointSize PoissonConsulDistribution PoissonDistribution PoissonProcess PoissonWindow PolarAxes PolarAxesOrigin PolarGridLines PolarPlot PolarTicks PoleZeroMarkers PolyaAeppliDistribution PolyGamma Polygon Polygon3DBox Polygon3DBoxOptions PolygonBox PolygonBoxOptions PolygonHoleScale PolygonIntersections PolygonScale PolyhedronData PolyLog PolynomialExtendedGCD PolynomialForm PolynomialGCD PolynomialLCM PolynomialMod PolynomialQ PolynomialQuotient PolynomialQuotientRemainder PolynomialReduce PolynomialRemainder Polynomials PopupMenu PopupMenuBox PopupMenuBoxOptions PopupView PopupWindow Position Positive PositiveDefiniteMatrixQ PossibleZeroQ Postfix PostScript Power PowerDistribution PowerExpand PowerMod PowerModList PowerSpectralDensity PowersRepresentations PowerSymmetricPolynomial Precedence PrecedenceForm Precedes PrecedesEqual PrecedesSlantEqual PrecedesTilde Precision PrecisionGoal PreDecrement PredictionRoot PreemptProtect PreferencesPath Prefix PreIncrement Prepend PrependTo PreserveImageOptions Previous PriceGraphDistribution PrimaryPlaceholder Prime PrimeNu PrimeOmega PrimePi PrimePowerQ PrimeQ Primes PrimeZetaP PrimitiveRoot PrincipalComponents PrincipalValue Print PrintAction PrintForm PrintingCopies PrintingOptions PrintingPageRange PrintingStartingPageNumber PrintingStyleEnvironment PrintPrecision PrintTemporary Prism PrismBox PrismBoxOptions PrivateCellOptions PrivateEvaluationOptions PrivateFontOptions PrivateFrontEndOptions PrivateNotebookOptions PrivatePaths Probability ProbabilityDistribution ProbabilityPlot ProbabilityPr ProbabilityScalePlot ProbitModelFit ProcessEstimator ProcessParameterAssumptions ProcessParameterQ ProcessStateDomain ProcessTimeDomain Product ProductDistribution ProductLog ProgressIndicator ProgressIndicatorBox ProgressIndicatorBoxOptions Projection Prolog PromptForm Properties Property PropertyList PropertyValue Proportion Proportional Protect Protected ProteinData Pruning PseudoInverse Purple Put PutAppend Pyramid PyramidBox PyramidBoxOptions QBinomial QFactorial QGamma QHypergeometricPFQ QPochhammer QPolyGamma QRDecomposition QuadraticIrrationalQ Quantile QuantilePlot Quantity QuantityForm QuantityMagnitude QuantityQ QuantityUnit Quartics QuartileDeviation Quartiles QuartileSkewness QueueingNetworkProcess QueueingProcess QueueProperties Quiet Quit Quotient QuotientRemainder RadialityCentrality RadicalBox RadicalBoxOptions RadioButton RadioButtonBar RadioButtonBox RadioButtonBoxOptions Radon RamanujanTau RamanujanTauL RamanujanTauTheta RamanujanTauZ Random RandomChoice RandomComplex RandomFunction RandomGraph RandomImage RandomInteger RandomPermutation RandomPrime RandomReal RandomSample RandomSeed RandomVariate RandomWalkProcess Range RangeFilter RangeSpecification RankedMax RankedMin Raster Raster3D Raster3DBox Raster3DBoxOptions RasterArray RasterBox RasterBoxOptions Rasterize RasterSize Rational RationalFunctions Rationalize Rationals Ratios Raw RawArray RawBoxes RawData RawMedium RayleighDistribution Re Read ReadList ReadProtected Real RealBlockDiagonalForm RealDigits RealExponent Reals Reap Record RecordLists RecordSeparators Rectangle RectangleBox RectangleBoxOptions RectangleChart RectangleChart3D RecurrenceFilter RecurrenceTable RecurringDigitsForm Red Reduce RefBox ReferenceLineStyle ReferenceMarkers ReferenceMarkerStyle Refine ReflectionMatrix ReflectionTransform Refresh RefreshRate RegionBinarize RegionFunction RegionPlot RegionPlot3D RegularExpression Regularization Reinstall Release ReleaseHold ReliabilityDistribution ReliefImage ReliefPlot Remove RemoveAlphaChannel RemoveAsynchronousTask Removed RemoveInputStreamMethod RemoveOutputStreamMethod RemoveProperty RemoveScheduledTask RenameDirectory RenameFile RenderAll RenderingOptions RenewalProcess RenkoChart Repeated RepeatedNull RepeatedString Replace ReplaceAll ReplaceHeldPart ReplaceImageValue ReplaceList ReplacePart ReplacePixelValue ReplaceRepeated Resampling Rescale RescalingTransform ResetDirectory ResetMenusPacket ResetScheduledTask Residue Resolve Rest Resultant ResumePacket Return ReturnExpressionPacket ReturnInputFormPacket ReturnPacket ReturnTextPacket Reverse ReverseBiorthogonalSplineWavelet ReverseElement ReverseEquilibrium ReverseGraph ReverseUpEquilibrium RevolutionAxis RevolutionPlot3D RGBColor RiccatiSolve RiceDistribution RidgeFilter RiemannR RiemannSiegelTheta RiemannSiegelZ Riffle Right RightArrow RightArrowBar RightArrowLeftArrow RightCosetRepresentative RightDownTeeVector RightDownVector RightDownVectorBar RightTee RightTeeArrow RightTeeVector RightTriangle RightTriangleBar RightTriangleEqual RightUpDownVector RightUpTeeVector RightUpVector RightUpVectorBar RightVector RightVectorBar RiskAchievementImportance RiskReductionImportance RogersTanimotoDissimilarity Root RootApproximant RootIntervals RootLocusPlot RootMeanSquare RootOfUnityQ RootReduce Roots RootSum Rotate RotateLabel RotateLeft RotateRight RotationAction RotationBox RotationBoxOptions RotationMatrix RotationTransform Round RoundImplies RoundingRadius Row RowAlignments RowBackgrounds RowBox RowHeights RowLines RowMinHeight RowReduce RowsEqual RowSpacings RSolve RudvalisGroupRu Rule RuleCondition RuleDelayed RuleForm RulerUnits Run RunScheduledTask RunThrough RuntimeAttributes RuntimeOptions RussellRaoDissimilarity SameQ SameTest SampleDepth SampledSoundFunction SampledSoundList SampleRate SamplingPeriod SARIMAProcess SARMAProcess SatisfiabilityCount SatisfiabilityInstances SatisfiableQ Saturday Save Saveable SaveAutoDelete SaveDefinitions SawtoothWave Scale Scaled ScaleDivisions ScaledMousePosition ScaleOrigin ScalePadding ScaleRanges ScaleRangeStyle ScalingFunctions ScalingMatrix ScalingTransform Scan ScheduledTaskActiveQ ScheduledTaskData ScheduledTaskObject ScheduledTasks SchurDecomposition ScientificForm ScreenRectangle ScreenStyleEnvironment ScriptBaselineShifts ScriptLevel ScriptMinSize ScriptRules ScriptSizeMultipliers Scrollbars ScrollingOptions ScrollPosition Sec Sech SechDistribution SectionGrouping SectorChart SectorChart3D SectorOrigin SectorSpacing SeedRandom Select Selectable SelectComponents SelectedCells SelectedNotebook Selection SelectionAnimate SelectionCell SelectionCellCreateCell SelectionCellDefaultStyle SelectionCellParentStyle SelectionCreateCell SelectionDebuggerTag SelectionDuplicateCell SelectionEvaluate SelectionEvaluateCreateCell SelectionMove SelectionPlaceholder SelectionSetStyle SelectWithContents SelfLoops SelfLoopStyle SemialgebraicComponentInstances SendMail Sequence SequenceAlignment SequenceForm SequenceHold SequenceLimit Series SeriesCoefficient SeriesData SessionTime Set SetAccuracy SetAlphaChannel SetAttributes Setbacks SetBoxFormNamesPacket SetDelayed SetDirectory SetEnvironment SetEvaluationNotebook SetFileDate SetFileLoadingContext SetNotebookStatusLine SetOptions SetOptionsPacket SetPrecision SetProperty SetSelectedNotebook SetSharedFunction SetSharedVariable SetSpeechParametersPacket SetStreamPosition SetSystemOptions Setter SetterBar SetterBox SetterBoxOptions Setting SetValue Shading Shallow ShannonWavelet ShapiroWilkTest Share Sharpen ShearingMatrix ShearingTransform ShenCastanMatrix Short ShortDownArrow Shortest ShortestMatch ShortestPathFunction ShortLeftArrow ShortRightArrow ShortUpArrow Show ShowAutoStyles ShowCellBracket ShowCellLabel ShowCellTags ShowClosedCellArea ShowContents ShowControls ShowCursorTracker ShowGroupOpenCloseIcon ShowGroupOpener ShowInvisibleCharacters ShowPageBreaks ShowPredictiveInterface ShowSelection ShowShortBoxForm ShowSpecialCharacters ShowStringCharacters ShowSyntaxStyles ShrinkingDelay ShrinkWrapBoundingBox SiegelTheta SiegelTukeyTest Sign Signature SignedRankTest SignificanceLevel SignPadding SignTest SimilarityRules SimpleGraph SimpleGraphQ Simplify Sin Sinc SinghMaddalaDistribution SingleEvaluation SingleLetterItalics SingleLetterStyle SingularValueDecomposition SingularValueList SingularValuePlot SingularValues Sinh SinhIntegral SinIntegral SixJSymbol Skeleton SkeletonTransform SkellamDistribution Skewness SkewNormalDistribution Skip SliceDistribution Slider Slider2D Slider2DBox Slider2DBoxOptions SliderBox SliderBoxOptions SlideView Slot SlotSequence Small SmallCircle Smaller SmithDelayCompensator SmithWatermanSimilarity SmoothDensityHistogram SmoothHistogram SmoothHistogram3D SmoothKernelDistribution SocialMediaData Socket SokalSneathDissimilarity Solve SolveAlways SolveDelayed Sort SortBy Sound SoundAndGraphics SoundNote SoundVolume Sow Space SpaceForm Spacer Spacings Span SpanAdjustments SpanCharacterRounding SpanFromAbove SpanFromBoth SpanFromLeft SpanLineThickness SpanMaxSize SpanMinSize SpanningCharacters SpanSymmetric SparseArray SpatialGraphDistribution Speak SpeakTextPacket SpearmanRankTest SpearmanRho Spectrogram SpectrogramArray Specularity SpellingCorrection SpellingDictionaries SpellingDictionariesPath SpellingOptions SpellingSuggestionsPacket Sphere SphereBox SphericalBesselJ SphericalBesselY SphericalHankelH1 SphericalHankelH2 SphericalHarmonicY SphericalPlot3D SphericalRegion SpheroidalEigenvalue SpheroidalJoiningFactor SpheroidalPS SpheroidalPSPrime SpheroidalQS SpheroidalQSPrime SpheroidalRadialFactor SpheroidalS1 SpheroidalS1Prime SpheroidalS2 SpheroidalS2Prime Splice SplicedDistribution SplineClosed SplineDegree SplineKnots SplineWeights Split SplitBy SpokenString Sqrt SqrtBox SqrtBoxOptions Square SquaredEuclideanDistance SquareFreeQ SquareIntersection SquaresR SquareSubset SquareSubsetEqual SquareSuperset SquareSupersetEqual SquareUnion SquareWave StabilityMargins StabilityMarginsStyle StableDistribution Stack StackBegin StackComplete StackInhibit StandardDeviation StandardDeviationFilter StandardForm Standardize StandbyDistribution Star StarGraph StartAsynchronousTask StartingStepSize StartOfLine StartOfString StartScheduledTask StartupSound StateDimensions StateFeedbackGains StateOutputEstimator StateResponse StateSpaceModel StateSpaceRealization StateSpaceTransform StationaryDistribution StationaryWaveletPacketTransform StationaryWaveletTransform StatusArea StatusCentrality StepMonitor StieltjesGamma StirlingS1 StirlingS2 StopAsynchronousTask StopScheduledTask StrataVariables StratonovichProcess StreamColorFunction StreamColorFunctionScaling StreamDensityPlot StreamPlot StreamPoints StreamPosition Streams StreamScale StreamStyle String StringBreak StringByteCount StringCases StringCount StringDrop StringExpression StringForm StringFormat StringFreeQ StringInsert StringJoin StringLength StringMatchQ StringPosition StringQ StringReplace StringReplaceList StringReplacePart StringReverse StringRotateLeft StringRotateRight StringSkeleton StringSplit StringTake StringToStream StringTrim StripBoxes StripOnInput StripWrapperBoxes StrokeForm StructuralImportance StructuredArray StructuredSelection StruveH StruveL Stub StudentTDistribution Style StyleBox StyleBoxAutoDelete StyleBoxOptions StyleData StyleDefinitions StyleForm StyleKeyMapping StyleMenuListing StyleNameDialogSettings StyleNames StylePrint StyleSheetPath Subfactorial Subgraph SubMinus SubPlus SubresultantPolynomialRemainders SubresultantPolynomials Subresultants Subscript SubscriptBox SubscriptBoxOptions Subscripted Subset SubsetEqual Subsets SubStar Subsuperscript SubsuperscriptBox SubsuperscriptBoxOptions Subtract SubtractFrom SubValues Succeeds SucceedsEqual SucceedsSlantEqual SucceedsTilde SuchThat Sum SumConvergence Sunday SuperDagger SuperMinus SuperPlus Superscript SuperscriptBox SuperscriptBoxOptions Superset SupersetEqual SuperStar Surd SurdForm SurfaceColor SurfaceGraphics SurvivalDistribution SurvivalFunction SurvivalModel SurvivalModelFit SuspendPacket SuzukiDistribution SuzukiGroupSuz SwatchLegend Switch Symbol SymbolName SymletWavelet Symmetric SymmetricGroup SymmetricMatrixQ SymmetricPolynomial SymmetricReduction Symmetrize SymmetrizedArray SymmetrizedArrayRules SymmetrizedDependentComponents SymmetrizedIndependentComponents SymmetrizedReplacePart SynchronousInitialization SynchronousUpdating Syntax SyntaxForm SyntaxInformation SyntaxLength SyntaxPacket SyntaxQ SystemDialogInput SystemException SystemHelpPath SystemInformation SystemInformationData SystemOpen SystemOptions SystemsModelDelay SystemsModelDelayApproximate SystemsModelDelete SystemsModelDimensions SystemsModelExtract SystemsModelFeedbackConnect SystemsModelLabels SystemsModelOrder SystemsModelParallelConnect SystemsModelSeriesConnect SystemsModelStateFeedbackConnect SystemStub Tab TabFilling Table TableAlignments TableDepth TableDirections TableForm TableHeadings TableSpacing TableView TableViewBox TabSpacings TabView TabViewBox TabViewBoxOptions TagBox TagBoxNote TagBoxOptions TaggingRules TagSet TagSetDelayed TagStyle TagUnset Take TakeWhile Tally Tan Tanh TargetFunctions TargetUnits TautologyQ TelegraphProcess TemplateBox TemplateBoxOptions TemplateSlotSequence TemporalData Temporary TemporaryVariable TensorContract TensorDimensions TensorExpand TensorProduct TensorQ TensorRank TensorReduce TensorSymmetry TensorTranspose TensorWedge Tetrahedron TetrahedronBox TetrahedronBoxOptions TeXForm TeXSave Text Text3DBox Text3DBoxOptions TextAlignment TextBand TextBoundingBox TextBox TextCell TextClipboardType TextData TextForm TextJustification TextLine TextPacket TextParagraph TextRecognize TextRendering TextStyle Texture TextureCoordinateFunction TextureCoordinateScaling Therefore ThermometerGauge Thick Thickness Thin Thinning ThisLink ThompsonGroupTh Thread ThreeJSymbol Threshold Through Throw Thumbnail Thursday Ticks TicksStyle Tilde TildeEqual TildeFullEqual TildeTilde TimeConstrained TimeConstraint Times TimesBy TimeSeriesForecast TimeSeriesInvertibility TimeUsed TimeValue TimeZone Timing Tiny 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diff --git a/js/theme.js b/js/theme.js
index dda9975..aecbb86 100755
--- a/js/theme.js
+++ b/js/theme.js
@@ -13,19 +13,27 @@ $( document ).ready(function() {
 
     // Keyboard navigation
     document.addEventListener("keydown", function(e) {
-        if ($(e.target).is(':input')) return true;
-        var key = e.which || e.keyCode || window.event && window.event.keyCode;
-        var page;
-        switch (key) {
-            case 39:  // right arrow
-                page = $('[role="navigation"] a:contains(Next):first').prop('href');
-                break;
-            case 37:  // left arrow
-                page = $('[role="navigation"] a:contains(Previous):first').prop('href');
-                break;
-            default: break;
-        }
-        if (page) window.location.href = page;
+      var key = e.which || e.keyCode || window.event && window.event.keyCode;
+      var page;
+      switch (key) {
+          case 78:  // n
+              page = $('[role="navigation"] a:contains(Next):first').prop('href');
+              break;
+          case 80:  // p
+              page = $('[role="navigation"] a:contains(Previous):first').prop('href');
+              break;
+          case 13:  // enter
+              if (e.target === document.getElementById('mkdocs-search-query')) {
+                e.preventDefault();
+              }
+              break;
+          default: break;
+      }
+      if ($(e.target).is(':input')) {
+        return true;
+      } else if (page) {
+        window.location.href = page;
+      }
     });
 
     $(document).on('click', "[data-toggle='rst-current-version']", function() {
@@ -35,8 +43,6 @@ $( document ).ready(function() {
     // Make tables responsive
     $("table.docutils:not(.field-list)").wrap("<div class='wy-table-responsive'></div>");
 
-    hljs.initHighlightingOnLoad();
-
     $('table').addClass('docutils');
 });
 
diff --git a/reference/index.html b/reference/index.html
index 5ea2cdb..f61ec8f 100755
--- a/reference/index.html
+++ b/reference/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Class Reference";
     var mkdocs_page_input_path = "reference.md";
-    var mkdocs_page_url = "/reference/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -2305,9 +2306,8 @@ static function printIntrosepctionSchema(GraphQL\Type\Schema $schema, array $opt
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/search.html b/search.html
index 5c84ebd..1d9009e 100755
--- a/search.html
+++ b/search.html
@@ -13,11 +13,12 @@
 
   <link rel="stylesheet" href="./css/theme.css" type="text/css" />
   <link rel="stylesheet" href="./css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="./css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
-  <script src="./js/jquery-2.1.1.min.js"></script>
-  <script src="./js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="./js/highlight.pack.js"></script> 
+  <script src="./js/jquery-2.1.1.min.js" defer></script>
+  <script src="./js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -28,10 +29,10 @@
     
     <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
       <div class="wy-side-nav-search">
-        <a href="." class="icon icon-home"> graphql-php</a>
+        <a href="./." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="./search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -42,17 +43,17 @@
           
             <li class="toctree-l1">
 		
-    <a class="" href=".">About</a>
+    <a class="" href="./.">About</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="getting-started/">Getting Started</a>
+    <a class="" href="./getting-started/">Getting Started</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="complementary-tools/">Complementary Tools</a>
+    <a class="" href="./complementary-tools/">Complementary Tools</a>
 	    </li>
           
             <li class="toctree-l1">
@@ -61,79 +62,79 @@
     <ul class="subnav">
                 <li class="">
                     
-    <a class="" href="type-system/">Introduction</a>
+    <a class="" href="./type-system/">Introduction</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/object-types/">Object Types</a>
+    <a class="" href="./type-system/object-types/">Object Types</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/scalar-types/">Scalar Types</a>
+    <a class="" href="./type-system/scalar-types/">Scalar Types</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/enum-types/">Enumeration Types</a>
+    <a class="" href="./type-system/enum-types/">Enumeration Types</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/lists-and-nonnulls/">Lists and Non-Null</a>
+    <a class="" href="./type-system/lists-and-nonnulls/">Lists and Non-Null</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/interfaces/">Interfaces</a>
+    <a class="" href="./type-system/interfaces/">Interfaces</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/unions/">Unions</a>
+    <a class="" href="./type-system/unions/">Unions</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/input-types/">Mutations and Input Types</a>
+    <a class="" href="./type-system/input-types/">Mutations and Input Types</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/directives/">Directives</a>
+    <a class="" href="./type-system/directives/">Directives</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/schema/">Schema</a>
+    <a class="" href="./type-system/schema/">Schema</a>
                 </li>
                 <li class="">
                     
-    <a class="" href="type-system/type-language/">Using Type Language</a>
+    <a class="" href="./type-system/type-language/">Using Type Language</a>
                 </li>
     </ul>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="executing-queries/">Executing Queries</a>
+    <a class="" href="./executing-queries/">Executing Queries</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="data-fetching/">Fetching Data</a>
+    <a class="" href="./data-fetching/">Fetching Data</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="error-handling/">Handling Errors</a>
+    <a class="" href="./error-handling/">Handling Errors</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="security/">Security</a>
+    <a class="" href="./security/">Security</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="how-it-works/">How it works</a>
+    <a class="" href="./how-it-works/">How it works</a>
 	    </li>
           
             <li class="toctree-l1">
 		
-    <a class="" href="reference/">Class Reference</a>
+    <a class="" href="./reference/">Class Reference</a>
 	    </li>
           
         </ul>
@@ -146,7 +147,7 @@
       
       <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
         <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
-        <a href=".">graphql-php</a>
+        <a href="./.">graphql-php</a>
       </nav>
 
       
@@ -154,7 +155,7 @@
         <div class="rst-content">
           <div role="navigation" aria-label="breadcrumbs navigation">
   <ul class="wy-breadcrumbs">
-    <li><a href=".">Docs</a> &raquo;</li>
+    <li><a href="./.">Docs</a> &raquo;</li>
     
     
     <li class="wy-breadcrumbs-aside">
@@ -171,7 +172,7 @@
 
   <form id="content_search" action="search.html">
     <span role="status" aria-live="polite" class="ui-helper-hidden-accessible"></span>
-    <input name="q" id="mkdocs-search-query" type="text" class="search_input search-query ui-autocomplete-input" placeholder="Search the Docs" autocomplete="off" autofocus>
+    <input name="q" id="mkdocs-search-query" type="text" class="search_input search-query ui-autocomplete-input" placeholder="Search the Docs" autocomplete="off" autofocus title="Type search term here">
   </form>
 
   <div id="mkdocs-search-results" class="search-results">
@@ -209,9 +210,8 @@
     </span>
 </div>
     <script>var base_url = '.';</script>
-    <script src="./js/theme.js"></script>
-      <script src="./search/require.js"></script>
-      <script src="./search/search.js"></script>
+    <script src="./js/theme.js" defer></script>
+      <script src="./search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/search/lunr.js b/search/lunr.js
new file mode 100755
index 0000000..c218cc8
--- /dev/null
+++ b/search/lunr.js
@@ -0,0 +1,2986 @@
+/**
+ * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.1.6
+ * Copyright (C) 2018 Oliver Nightingale
+ * @license MIT
+ */
+
+;(function(){
+
+/**
+ * A convenience function for configuring and constructing
+ * a new lunr Index.
+ *
+ * A lunr.Builder instance is created and the pipeline setup
+ * with a trimmer, stop word filter and stemmer.
+ *
+ * This builder object is yielded to the configuration function
+ * that is passed as a parameter, allowing the list of fields
+ * and other builder parameters to be customised.
+ *
+ * All documents _must_ be added within the passed config function.
+ *
+ * @example
+ * var idx = lunr(function () {
+ *   this.field('title')
+ *   this.field('body')
+ *   this.ref('id')
+ *
+ *   documents.forEach(function (doc) {
+ *     this.add(doc)
+ *   }, this)
+ * })
+ *
+ * @see {@link lunr.Builder}
+ * @see {@link lunr.Pipeline}
+ * @see {@link lunr.trimmer}
+ * @see {@link lunr.stopWordFilter}
+ * @see {@link lunr.stemmer}
+ * @namespace {function} lunr
+ */
+var lunr = function (config) {
+  var builder = new lunr.Builder
+
+  builder.pipeline.add(
+    lunr.trimmer,
+    lunr.stopWordFilter,
+    lunr.stemmer
+  )
+
+  builder.searchPipeline.add(
+    lunr.stemmer
+  )
+
+  config.call(builder, builder)
+  return builder.build()
+}
+
+lunr.version = "2.1.6"
+/*!
+ * lunr.utils
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * A namespace containing utils for the rest of the lunr library
+ */
+lunr.utils = {}
+
+/**
+ * Print a warning message to the console.
+ *
+ * @param {String} message The message to be printed.
+ * @memberOf Utils
+ */
+lunr.utils.warn = (function (global) {
+  /* eslint-disable no-console */
+  return function (message) {
+    if (global.console && console.warn) {
+      console.warn(message)
+    }
+  }
+  /* eslint-enable no-console */
+})(this)
+
+/**
+ * Convert an object to a string.
+ *
+ * In the case of `null` and `undefined` the function returns
+ * the empty string, in all other cases the result of calling
+ * `toString` on the passed object is returned.
+ *
+ * @param {Any} obj The object to convert to a string.
+ * @return {String} string representation of the passed object.
+ * @memberOf Utils
+ */
+lunr.utils.asString = function (obj) {
+  if (obj === void 0 || obj === null) {
+    return ""
+  } else {
+    return obj.toString()
+  }
+}
+lunr.FieldRef = function (docRef, fieldName, stringValue) {
+  this.docRef = docRef
+  this.fieldName = fieldName
+  this._stringValue = stringValue
+}
+
+lunr.FieldRef.joiner = "/"
+
+lunr.FieldRef.fromString = function (s) {
+  var n = s.indexOf(lunr.FieldRef.joiner)
+
+  if (n === -1) {
+    throw "malformed field ref string"
+  }
+
+  var fieldRef = s.slice(0, n),
+      docRef = s.slice(n + 1)
+
+  return new lunr.FieldRef (docRef, fieldRef, s)
+}
+
+lunr.FieldRef.prototype.toString = function () {
+  if (this._stringValue == undefined) {
+    this._stringValue = this.fieldName + lunr.FieldRef.joiner + this.docRef
+  }
+
+  return this._stringValue
+}
+/**
+ * A function to calculate the inverse document frequency for
+ * a posting. This is shared between the builder and the index
+ *
+ * @private
+ * @param {object} posting - The posting for a given term
+ * @param {number} documentCount - The total number of documents.
+ */
+lunr.idf = function (posting, documentCount) {
+  var documentsWithTerm = 0
+
+  for (var fieldName in posting) {
+    if (fieldName == '_index') continue // Ignore the term index, its not a field
+    documentsWithTerm += Object.keys(posting[fieldName]).length
+  }
+
+  var x = (documentCount - documentsWithTerm + 0.5) / (documentsWithTerm + 0.5)
+
+  return Math.log(1 + Math.abs(x))
+}
+
+/**
+ * A token wraps a string representation of a token
+ * as it is passed through the text processing pipeline.
+ *
+ * @constructor
+ * @param {string} [str=''] - The string token being wrapped.
+ * @param {object} [metadata={}] - Metadata associated with this token.
+ */
+lunr.Token = function (str, metadata) {
+  this.str = str || ""
+  this.metadata = metadata || {}
+}
+
+/**
+ * Returns the token string that is being wrapped by this object.
+ *
+ * @returns {string}
+ */
+lunr.Token.prototype.toString = function () {
+  return this.str
+}
+
+/**
+ * A token update function is used when updating or optionally
+ * when cloning a token.
+ *
+ * @callback lunr.Token~updateFunction
+ * @param {string} str - The string representation of the token.
+ * @param {Object} metadata - All metadata associated with this token.
+ */
+
+/**
+ * Applies the given function to the wrapped string token.
+ *
+ * @example
+ * token.update(function (str, metadata) {
+ *   return str.toUpperCase()
+ * })
+ *
+ * @param {lunr.Token~updateFunction} fn - A function to apply to the token string.
+ * @returns {lunr.Token}
+ */
+lunr.Token.prototype.update = function (fn) {
+  this.str = fn(this.str, this.metadata)
+  return this
+}
+
+/**
+ * Creates a clone of this token. Optionally a function can be
+ * applied to the cloned token.
+ *
+ * @param {lunr.Token~updateFunction} [fn] - An optional function to apply to the cloned token.
+ * @returns {lunr.Token}
+ */
+lunr.Token.prototype.clone = function (fn) {
+  fn = fn || function (s) { return s }
+  return new lunr.Token (fn(this.str, this.metadata), this.metadata)
+}
+/*!
+ * lunr.tokenizer
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * A function for splitting a string into tokens ready to be inserted into
+ * the search index. Uses `lunr.tokenizer.separator` to split strings, change
+ * the value of this property to change how strings are split into tokens.
+ *
+ * This tokenizer will convert its parameter to a string by calling `toString` and
+ * then will split this string on the character in `lunr.tokenizer.separator`.
+ * Arrays will have their elements converted to strings and wrapped in a lunr.Token.
+ *
+ * @static
+ * @param {?(string|object|object[])} obj - The object to convert into tokens
+ * @returns {lunr.Token[]}
+ */
+lunr.tokenizer = function (obj) {
+  if (obj == null || obj == undefined) {
+    return []
+  }
+
+  if (Array.isArray(obj)) {
+    return obj.map(function (t) {
+      return new lunr.Token(lunr.utils.asString(t).toLowerCase())
+    })
+  }
+
+  var str = obj.toString().trim().toLowerCase(),
+      len = str.length,
+      tokens = []
+
+  for (var sliceEnd = 0, sliceStart = 0; sliceEnd <= len; sliceEnd++) {
+    var char = str.charAt(sliceEnd),
+        sliceLength = sliceEnd - sliceStart
+
+    if ((char.match(lunr.tokenizer.separator) || sliceEnd == len)) {
+
+      if (sliceLength > 0) {
+        tokens.push(
+          new lunr.Token (str.slice(sliceStart, sliceEnd), {
+            position: [sliceStart, sliceLength],
+            index: tokens.length
+          })
+        )
+      }
+
+      sliceStart = sliceEnd + 1
+    }
+
+  }
+
+  return tokens
+}
+
+/**
+ * The separator used to split a string into tokens. Override this property to change the behaviour of
+ * `lunr.tokenizer` behaviour when tokenizing strings. By default this splits on whitespace and hyphens.
+ *
+ * @static
+ * @see lunr.tokenizer
+ */
+lunr.tokenizer.separator = /[\s\-]+/
+/*!
+ * lunr.Pipeline
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * lunr.Pipelines maintain an ordered list of functions to be applied to all
+ * tokens in documents entering the search index and queries being ran against
+ * the index.
+ *
+ * An instance of lunr.Index created with the lunr shortcut will contain a
+ * pipeline with a stop word filter and an English language stemmer. Extra
+ * functions can be added before or after either of these functions or these
+ * default functions can be removed.
+ *
+ * When run the pipeline will call each function in turn, passing a token, the
+ * index of that token in the original list of all tokens and finally a list of
+ * all the original tokens.
+ *
+ * The output of functions in the pipeline will be passed to the next function
+ * in the pipeline. To exclude a token from entering the index the function
+ * should return undefined, the rest of the pipeline will not be called with
+ * this token.
+ *
+ * For serialisation of pipelines to work, all functions used in an instance of
+ * a pipeline should be registered with lunr.Pipeline. Registered functions can
+ * then be loaded. If trying to load a serialised pipeline that uses functions
+ * that are not registered an error will be thrown.
+ *
+ * If not planning on serialising the pipeline then registering pipeline functions
+ * is not necessary.
+ *
+ * @constructor
+ */
+lunr.Pipeline = function () {
+  this._stack = []
+}
+
+lunr.Pipeline.registeredFunctions = Object.create(null)
+
+/**
+ * A pipeline function maps lunr.Token to lunr.Token. A lunr.Token contains the token
+ * string as well as all known metadata. A pipeline function can mutate the token string
+ * or mutate (or add) metadata for a given token.
+ *
+ * A pipeline function can indicate that the passed token should be discarded by returning
+ * null. This token will not be passed to any downstream pipeline functions and will not be
+ * added to the index.
+ *
+ * Multiple tokens can be returned by returning an array of tokens. Each token will be passed
+ * to any downstream pipeline functions and all will returned tokens will be added to the index.
+ *
+ * Any number of pipeline functions may be chained together using a lunr.Pipeline.
+ *
+ * @interface lunr.PipelineFunction
+ * @param {lunr.Token} token - A token from the document being processed.
+ * @param {number} i - The index of this token in the complete list of tokens for this document/field.
+ * @param {lunr.Token[]} tokens - All tokens for this document/field.
+ * @returns {(?lunr.Token|lunr.Token[])}
+ */
+
+/**
+ * Register a function with the pipeline.
+ *
+ * Functions that are used in the pipeline should be registered if the pipeline
+ * needs to be serialised, or a serialised pipeline needs to be loaded.
+ *
+ * Registering a function does not add it to a pipeline, functions must still be
+ * added to instances of the pipeline for them to be used when running a pipeline.
+ *
+ * @param {lunr.PipelineFunction} fn - The function to check for.
+ * @param {String} label - The label to register this function with
+ */
+lunr.Pipeline.registerFunction = function (fn, label) {
+  if (label in this.registeredFunctions) {
+    lunr.utils.warn('Overwriting existing registered function: ' + label)
+  }
+
+  fn.label = label
+  lunr.Pipeline.registeredFunctions[fn.label] = fn
+}
+
+/**
+ * Warns if the function is not registered as a Pipeline function.
+ *
+ * @param {lunr.PipelineFunction} fn - The function to check for.
+ * @private
+ */
+lunr.Pipeline.warnIfFunctionNotRegistered = function (fn) {
+  var isRegistered = fn.label && (fn.label in this.registeredFunctions)
+
+  if (!isRegistered) {
+    lunr.utils.warn('Function is not registered with pipeline. This may cause problems when serialising the index.\n', fn)
+  }
+}
+
+/**
+ * Loads a previously serialised pipeline.
+ *
+ * All functions to be loaded must already be registered with lunr.Pipeline.
+ * If any function from the serialised data has not been registered then an
+ * error will be thrown.
+ *
+ * @param {Object} serialised - The serialised pipeline to load.
+ * @returns {lunr.Pipeline}
+ */
+lunr.Pipeline.load = function (serialised) {
+  var pipeline = new lunr.Pipeline
+
+  serialised.forEach(function (fnName) {
+    var fn = lunr.Pipeline.registeredFunctions[fnName]
+
+    if (fn) {
+      pipeline.add(fn)
+    } else {
+      throw new Error('Cannot load unregistered function: ' + fnName)
+    }
+  })
+
+  return pipeline
+}
+
+/**
+ * Adds new functions to the end of the pipeline.
+ *
+ * Logs a warning if the function has not been registered.
+ *
+ * @param {lunr.PipelineFunction[]} functions - Any number of functions to add to the pipeline.
+ */
+lunr.Pipeline.prototype.add = function () {
+  var fns = Array.prototype.slice.call(arguments)
+
+  fns.forEach(function (fn) {
+    lunr.Pipeline.warnIfFunctionNotRegistered(fn)
+    this._stack.push(fn)
+  }, this)
+}
+
+/**
+ * Adds a single function after a function that already exists in the
+ * pipeline.
+ *
+ * Logs a warning if the function has not been registered.
+ *
+ * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.
+ * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.
+ */
+lunr.Pipeline.prototype.after = function (existingFn, newFn) {
+  lunr.Pipeline.warnIfFunctionNotRegistered(newFn)
+
+  var pos = this._stack.indexOf(existingFn)
+  if (pos == -1) {
+    throw new Error('Cannot find existingFn')
+  }
+
+  pos = pos + 1
+  this._stack.splice(pos, 0, newFn)
+}
+
+/**
+ * Adds a single function before a function that already exists in the
+ * pipeline.
+ *
+ * Logs a warning if the function has not been registered.
+ *
+ * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.
+ * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.
+ */
+lunr.Pipeline.prototype.before = function (existingFn, newFn) {
+  lunr.Pipeline.warnIfFunctionNotRegistered(newFn)
+
+  var pos = this._stack.indexOf(existingFn)
+  if (pos == -1) {
+    throw new Error('Cannot find existingFn')
+  }
+
+  this._stack.splice(pos, 0, newFn)
+}
+
+/**
+ * Removes a function from the pipeline.
+ *
+ * @param {lunr.PipelineFunction} fn The function to remove from the pipeline.
+ */
+lunr.Pipeline.prototype.remove = function (fn) {
+  var pos = this._stack.indexOf(fn)
+  if (pos == -1) {
+    return
+  }
+
+  this._stack.splice(pos, 1)
+}
+
+/**
+ * Runs the current list of functions that make up the pipeline against the
+ * passed tokens.
+ *
+ * @param {Array} tokens The tokens to run through the pipeline.
+ * @returns {Array}
+ */
+lunr.Pipeline.prototype.run = function (tokens) {
+  var stackLength = this._stack.length
+
+  for (var i = 0; i < stackLength; i++) {
+    var fn = this._stack[i]
+    var memo = []
+
+    for (var j = 0; j < tokens.length; j++) {
+      var result = fn(tokens[j], j, tokens)
+
+      if (result === void 0 || result === '') continue
+
+      if (result instanceof Array) {
+        for (var k = 0; k < result.length; k++) {
+          memo.push(result[k])
+        }
+      } else {
+        memo.push(result)
+      }
+    }
+
+    tokens = memo
+  }
+
+  return tokens
+}
+
+/**
+ * Convenience method for passing a string through a pipeline and getting
+ * strings out. This method takes care of wrapping the passed string in a
+ * token and mapping the resulting tokens back to strings.
+ *
+ * @param {string} str - The string to pass through the pipeline.
+ * @returns {string[]}
+ */
+lunr.Pipeline.prototype.runString = function (str) {
+  var token = new lunr.Token (str)
+
+  return this.run([token]).map(function (t) {
+    return t.toString()
+  })
+}
+
+/**
+ * Resets the pipeline by removing any existing processors.
+ *
+ */
+lunr.Pipeline.prototype.reset = function () {
+  this._stack = []
+}
+
+/**
+ * Returns a representation of the pipeline ready for serialisation.
+ *
+ * Logs a warning if the function has not been registered.
+ *
+ * @returns {Array}
+ */
+lunr.Pipeline.prototype.toJSON = function () {
+  return this._stack.map(function (fn) {
+    lunr.Pipeline.warnIfFunctionNotRegistered(fn)
+
+    return fn.label
+  })
+}
+/*!
+ * lunr.Vector
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * A vector is used to construct the vector space of documents and queries. These
+ * vectors support operations to determine the similarity between two documents or
+ * a document and a query.
+ *
+ * Normally no parameters are required for initializing a vector, but in the case of
+ * loading a previously dumped vector the raw elements can be provided to the constructor.
+ *
+ * For performance reasons vectors are implemented with a flat array, where an elements
+ * index is immediately followed by its value. E.g. [index, value, index, value]. This
+ * allows the underlying array to be as sparse as possible and still offer decent
+ * performance when being used for vector calculations.
+ *
+ * @constructor
+ * @param {Number[]} [elements] - The flat list of element index and element value pairs.
+ */
+lunr.Vector = function (elements) {
+  this._magnitude = 0
+  this.elements = elements || []
+}
+
+
+/**
+ * Calculates the position within the vector to insert a given index.
+ *
+ * This is used internally by insert and upsert. If there are duplicate indexes then
+ * the position is returned as if the value for that index were to be updated, but it
+ * is the callers responsibility to check whether there is a duplicate at that index
+ *
+ * @param {Number} insertIdx - The index at which the element should be inserted.
+ * @returns {Number}
+ */
+lunr.Vector.prototype.positionForIndex = function (index) {
+  // For an empty vector the tuple can be inserted at the beginning
+  if (this.elements.length == 0) {
+    return 0
+  }
+
+  var start = 0,
+      end = this.elements.length / 2,
+      sliceLength = end - start,
+      pivotPoint = Math.floor(sliceLength / 2),
+      pivotIndex = this.elements[pivotPoint * 2]
+
+  while (sliceLength > 1) {
+    if (pivotIndex < index) {
+      start = pivotPoint
+    }
+
+    if (pivotIndex > index) {
+      end = pivotPoint
+    }
+
+    if (pivotIndex == index) {
+      break
+    }
+
+    sliceLength = end - start
+    pivotPoint = start + Math.floor(sliceLength / 2)
+    pivotIndex = this.elements[pivotPoint * 2]
+  }
+
+  if (pivotIndex == index) {
+    return pivotPoint * 2
+  }
+
+  if (pivotIndex > index) {
+    return pivotPoint * 2
+  }
+
+  if (pivotIndex < index) {
+    return (pivotPoint + 1) * 2
+  }
+}
+
+/**
+ * Inserts an element at an index within the vector.
+ *
+ * Does not allow duplicates, will throw an error if there is already an entry
+ * for this index.
+ *
+ * @param {Number} insertIdx - The index at which the element should be inserted.
+ * @param {Number} val - The value to be inserted into the vector.
+ */
+lunr.Vector.prototype.insert = function (insertIdx, val) {
+  this.upsert(insertIdx, val, function () {
+    throw "duplicate index"
+  })
+}
+
+/**
+ * Inserts or updates an existing index within the vector.
+ *
+ * @param {Number} insertIdx - The index at which the element should be inserted.
+ * @param {Number} val - The value to be inserted into the vector.
+ * @param {function} fn - A function that is called for updates, the existing value and the
+ * requested value are passed as arguments
+ */
+lunr.Vector.prototype.upsert = function (insertIdx, val, fn) {
+  this._magnitude = 0
+  var position = this.positionForIndex(insertIdx)
+
+  if (this.elements[position] == insertIdx) {
+    this.elements[position + 1] = fn(this.elements[position + 1], val)
+  } else {
+    this.elements.splice(position, 0, insertIdx, val)
+  }
+}
+
+/**
+ * Calculates the magnitude of this vector.
+ *
+ * @returns {Number}
+ */
+lunr.Vector.prototype.magnitude = function () {
+  if (this._magnitude) return this._magnitude
+
+  var sumOfSquares = 0,
+      elementsLength = this.elements.length
+
+  for (var i = 1; i < elementsLength; i += 2) {
+    var val = this.elements[i]
+    sumOfSquares += val * val
+  }
+
+  return this._magnitude = Math.sqrt(sumOfSquares)
+}
+
+/**
+ * Calculates the dot product of this vector and another vector.
+ *
+ * @param {lunr.Vector} otherVector - The vector to compute the dot product with.
+ * @returns {Number}
+ */
+lunr.Vector.prototype.dot = function (otherVector) {
+  var dotProduct = 0,
+      a = this.elements, b = otherVector.elements,
+      aLen = a.length, bLen = b.length,
+      aVal = 0, bVal = 0,
+      i = 0, j = 0
+
+  while (i < aLen && j < bLen) {
+    aVal = a[i], bVal = b[j]
+    if (aVal < bVal) {
+      i += 2
+    } else if (aVal > bVal) {
+      j += 2
+    } else if (aVal == bVal) {
+      dotProduct += a[i + 1] * b[j + 1]
+      i += 2
+      j += 2
+    }
+  }
+
+  return dotProduct
+}
+
+/**
+ * Calculates the cosine similarity between this vector and another
+ * vector.
+ *
+ * @param {lunr.Vector} otherVector - The other vector to calculate the
+ * similarity with.
+ * @returns {Number}
+ */
+lunr.Vector.prototype.similarity = function (otherVector) {
+  return this.dot(otherVector) / (this.magnitude() * otherVector.magnitude())
+}
+
+/**
+ * Converts the vector to an array of the elements within the vector.
+ *
+ * @returns {Number[]}
+ */
+lunr.Vector.prototype.toArray = function () {
+  var output = new Array (this.elements.length / 2)
+
+  for (var i = 1, j = 0; i < this.elements.length; i += 2, j++) {
+    output[j] = this.elements[i]
+  }
+
+  return output
+}
+
+/**
+ * A JSON serializable representation of the vector.
+ *
+ * @returns {Number[]}
+ */
+lunr.Vector.prototype.toJSON = function () {
+  return this.elements
+}
+/* eslint-disable */
+/*!
+ * lunr.stemmer
+ * Copyright (C) 2018 Oliver Nightingale
+ * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt
+ */
+
+/**
+ * lunr.stemmer is an english language stemmer, this is a JavaScript
+ * implementation of the PorterStemmer taken from http://tartarus.org/~martin
+ *
+ * @static
+ * @implements {lunr.PipelineFunction}
+ * @param {lunr.Token} token - The string to stem
+ * @returns {lunr.Token}
+ * @see {@link lunr.Pipeline}
+ */
+lunr.stemmer = (function(){
+  var step2list = {
+      "ational" : "ate",
+      "tional" : "tion",
+      "enci" : "ence",
+      "anci" : "ance",
+      "izer" : "ize",
+      "bli" : "ble",
+      "alli" : "al",
+      "entli" : "ent",
+      "eli" : "e",
+      "ousli" : "ous",
+      "ization" : "ize",
+      "ation" : "ate",
+      "ator" : "ate",
+      "alism" : "al",
+      "iveness" : "ive",
+      "fulness" : "ful",
+      "ousness" : "ous",
+      "aliti" : "al",
+      "iviti" : "ive",
+      "biliti" : "ble",
+      "logi" : "log"
+    },
+
+    step3list = {
+      "icate" : "ic",
+      "ative" : "",
+      "alize" : "al",
+      "iciti" : "ic",
+      "ical" : "ic",
+      "ful" : "",
+      "ness" : ""
+    },
+
+    c = "[^aeiou]",          // consonant
+    v = "[aeiouy]",          // vowel
+    C = c + "[^aeiouy]*",    // consonant sequence
+    V = v + "[aeiou]*",      // vowel sequence
+
+    mgr0 = "^(" + C + ")?" + V + C,               // [C]VC... is m>0
+    meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$",  // [C]VC[V] is m=1
+    mgr1 = "^(" + C + ")?" + V + C + V + C,       // [C]VCVC... is m>1
+    s_v = "^(" + C + ")?" + v;                   // vowel in stem
+
+  var re_mgr0 = new RegExp(mgr0);
+  var re_mgr1 = new RegExp(mgr1);
+  var re_meq1 = new RegExp(meq1);
+  var re_s_v = new RegExp(s_v);
+
+  var re_1a = /^(.+?)(ss|i)es$/;
+  var re2_1a = /^(.+?)([^s])s$/;
+  var re_1b = /^(.+?)eed$/;
+  var re2_1b = /^(.+?)(ed|ing)$/;
+  var re_1b_2 = /.$/;
+  var re2_1b_2 = /(at|bl|iz)$/;
+  var re3_1b_2 = new RegExp("([^aeiouylsz])\\1$");
+  var re4_1b_2 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+
+  var re_1c = /^(.+?[^aeiou])y$/;
+  var re_2 = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+
+  var re_3 = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+
+  var re_4 = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+  var re2_4 = /^(.+?)(s|t)(ion)$/;
+
+  var re_5 = /^(.+?)e$/;
+  var re_5_1 = /ll$/;
+  var re3_5 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+
+  var porterStemmer = function porterStemmer(w) {
+    var stem,
+      suffix,
+      firstch,
+      re,
+      re2,
+      re3,
+      re4;
+
+    if (w.length < 3) { return w; }
+
+    firstch = w.substr(0,1);
+    if (firstch == "y") {
+      w = firstch.toUpperCase() + w.substr(1);
+    }
+
+    // Step 1a
+    re = re_1a
+    re2 = re2_1a;
+
+    if (re.test(w)) { w = w.replace(re,"$1$2"); }
+    else if (re2.test(w)) { w = w.replace(re2,"$1$2"); }
+
+    // Step 1b
+    re = re_1b;
+    re2 = re2_1b;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      re = re_mgr0;
+      if (re.test(fp[1])) {
+        re = re_1b_2;
+        w = w.replace(re,"");
+      }
+    } else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1];
+      re2 = re_s_v;
+      if (re2.test(stem)) {
+        w = stem;
+        re2 = re2_1b_2;
+        re3 = re3_1b_2;
+        re4 = re4_1b_2;
+        if (re2.test(w)) { w = w + "e"; }
+        else if (re3.test(w)) { re = re_1b_2; w = w.replace(re,""); }
+        else if (re4.test(w)) { w = w + "e"; }
+      }
+    }
+
+    // Step 1c - replace suffix y or Y by i if preceded by a non-vowel which is not the first letter of the word (so cry -> cri, by -> by, say -> say)
+    re = re_1c;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      w = stem + "i";
+    }
+
+    // Step 2
+    re = re_2;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = re_mgr0;
+      if (re.test(stem)) {
+        w = stem + step2list[suffix];
+      }
+    }
+
+    // Step 3
+    re = re_3;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = re_mgr0;
+      if (re.test(stem)) {
+        w = stem + step3list[suffix];
+      }
+    }
+
+    // Step 4
+    re = re_4;
+    re2 = re2_4;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = re_mgr1;
+      if (re.test(stem)) {
+        w = stem;
+      }
+    } else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1] + fp[2];
+      re2 = re_mgr1;
+      if (re2.test(stem)) {
+        w = stem;
+      }
+    }
+
+    // Step 5
+    re = re_5;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = re_mgr1;
+      re2 = re_meq1;
+      re3 = re3_5;
+      if (re.test(stem) || (re2.test(stem) && !(re3.test(stem)))) {
+        w = stem;
+      }
+    }
+
+    re = re_5_1;
+    re2 = re_mgr1;
+    if (re.test(w) && re2.test(w)) {
+      re = re_1b_2;
+      w = w.replace(re,"");
+    }
+
+    // and turn initial Y back to y
+
+    if (firstch == "y") {
+      w = firstch.toLowerCase() + w.substr(1);
+    }
+
+    return w;
+  };
+
+  return function (token) {
+    return token.update(porterStemmer);
+  }
+})();
+
+lunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer')
+/*!
+ * lunr.stopWordFilter
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * lunr.generateStopWordFilter builds a stopWordFilter function from the provided
+ * list of stop words.
+ *
+ * The built in lunr.stopWordFilter is built using this generator and can be used
+ * to generate custom stopWordFilters for applications or non English languages.
+ *
+ * @param {Array} token The token to pass through the filter
+ * @returns {lunr.PipelineFunction}
+ * @see lunr.Pipeline
+ * @see lunr.stopWordFilter
+ */
+lunr.generateStopWordFilter = function (stopWords) {
+  var words = stopWords.reduce(function (memo, stopWord) {
+    memo[stopWord] = stopWord
+    return memo
+  }, {})
+
+  return function (token) {
+    if (token && words[token.toString()] !== token.toString()) return token
+  }
+}
+
+/**
+ * lunr.stopWordFilter is an English language stop word list filter, any words
+ * contained in the list will not be passed through the filter.
+ *
+ * This is intended to be used in the Pipeline. If the token does not pass the
+ * filter then undefined will be returned.
+ *
+ * @implements {lunr.PipelineFunction}
+ * @params {lunr.Token} token - A token to check for being a stop word.
+ * @returns {lunr.Token}
+ * @see {@link lunr.Pipeline}
+ */
+lunr.stopWordFilter = lunr.generateStopWordFilter([
+  'a',
+  'able',
+  'about',
+  'across',
+  'after',
+  'all',
+  'almost',
+  'also',
+  'am',
+  'among',
+  'an',
+  'and',
+  'any',
+  'are',
+  'as',
+  'at',
+  'be',
+  'because',
+  'been',
+  'but',
+  'by',
+  'can',
+  'cannot',
+  'could',
+  'dear',
+  'did',
+  'do',
+  'does',
+  'either',
+  'else',
+  'ever',
+  'every',
+  'for',
+  'from',
+  'get',
+  'got',
+  'had',
+  'has',
+  'have',
+  'he',
+  'her',
+  'hers',
+  'him',
+  'his',
+  'how',
+  'however',
+  'i',
+  'if',
+  'in',
+  'into',
+  'is',
+  'it',
+  'its',
+  'just',
+  'least',
+  'let',
+  'like',
+  'likely',
+  'may',
+  'me',
+  'might',
+  'most',
+  'must',
+  'my',
+  'neither',
+  'no',
+  'nor',
+  'not',
+  'of',
+  'off',
+  'often',
+  'on',
+  'only',
+  'or',
+  'other',
+  'our',
+  'own',
+  'rather',
+  'said',
+  'say',
+  'says',
+  'she',
+  'should',
+  'since',
+  'so',
+  'some',
+  'than',
+  'that',
+  'the',
+  'their',
+  'them',
+  'then',
+  'there',
+  'these',
+  'they',
+  'this',
+  'tis',
+  'to',
+  'too',
+  'twas',
+  'us',
+  'wants',
+  'was',
+  'we',
+  'were',
+  'what',
+  'when',
+  'where',
+  'which',
+  'while',
+  'who',
+  'whom',
+  'why',
+  'will',
+  'with',
+  'would',
+  'yet',
+  'you',
+  'your'
+])
+
+lunr.Pipeline.registerFunction(lunr.stopWordFilter, 'stopWordFilter')
+/*!
+ * lunr.trimmer
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * lunr.trimmer is a pipeline function for trimming non word
+ * characters from the beginning and end of tokens before they
+ * enter the index.
+ *
+ * This implementation may not work correctly for non latin
+ * characters and should either be removed or adapted for use
+ * with languages with non-latin characters.
+ *
+ * @static
+ * @implements {lunr.PipelineFunction}
+ * @param {lunr.Token} token The token to pass through the filter
+ * @returns {lunr.Token}
+ * @see lunr.Pipeline
+ */
+lunr.trimmer = function (token) {
+  return token.update(function (s) {
+    return s.replace(/^\W+/, '').replace(/\W+$/, '')
+  })
+}
+
+lunr.Pipeline.registerFunction(lunr.trimmer, 'trimmer')
+/*!
+ * lunr.TokenSet
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * A token set is used to store the unique list of all tokens
+ * within an index. Token sets are also used to represent an
+ * incoming query to the index, this query token set and index
+ * token set are then intersected to find which tokens to look
+ * up in the inverted index.
+ *
+ * A token set can hold multiple tokens, as in the case of the
+ * index token set, or it can hold a single token as in the
+ * case of a simple query token set.
+ *
+ * Additionally token sets are used to perform wildcard matching.
+ * Leading, contained and trailing wildcards are supported, and
+ * from this edit distance matching can also be provided.
+ *
+ * Token sets are implemented as a minimal finite state automata,
+ * where both common prefixes and suffixes are shared between tokens.
+ * This helps to reduce the space used for storing the token set.
+ *
+ * @constructor
+ */
+lunr.TokenSet = function () {
+  this.final = false
+  this.edges = {}
+  this.id = lunr.TokenSet._nextId
+  lunr.TokenSet._nextId += 1
+}
+
+/**
+ * Keeps track of the next, auto increment, identifier to assign
+ * to a new tokenSet.
+ *
+ * TokenSets require a unique identifier to be correctly minimised.
+ *
+ * @private
+ */
+lunr.TokenSet._nextId = 1
+
+/**
+ * Creates a TokenSet instance from the given sorted array of words.
+ *
+ * @param {String[]} arr - A sorted array of strings to create the set from.
+ * @returns {lunr.TokenSet}
+ * @throws Will throw an error if the input array is not sorted.
+ */
+lunr.TokenSet.fromArray = function (arr) {
+  var builder = new lunr.TokenSet.Builder
+
+  for (var i = 0, len = arr.length; i < len; i++) {
+    builder.insert(arr[i])
+  }
+
+  builder.finish()
+  return builder.root
+}
+
+/**
+ * Creates a token set from a query clause.
+ *
+ * @private
+ * @param {Object} clause - A single clause from lunr.Query.
+ * @param {string} clause.term - The query clause term.
+ * @param {number} [clause.editDistance] - The optional edit distance for the term.
+ * @returns {lunr.TokenSet}
+ */
+lunr.TokenSet.fromClause = function (clause) {
+  if ('editDistance' in clause) {
+    return lunr.TokenSet.fromFuzzyString(clause.term, clause.editDistance)
+  } else {
+    return lunr.TokenSet.fromString(clause.term)
+  }
+}
+
+/**
+ * Creates a token set representing a single string with a specified
+ * edit distance.
+ *
+ * Insertions, deletions, substitutions and transpositions are each
+ * treated as an edit distance of 1.
+ *
+ * Increasing the allowed edit distance will have a dramatic impact
+ * on the performance of both creating and intersecting these TokenSets.
+ * It is advised to keep the edit distance less than 3.
+ *
+ * @param {string} str - The string to create the token set from.
+ * @param {number} editDistance - The allowed edit distance to match.
+ * @returns {lunr.Vector}
+ */
+lunr.TokenSet.fromFuzzyString = function (str, editDistance) {
+  var root = new lunr.TokenSet
+
+  var stack = [{
+    node: root,
+    editsRemaining: editDistance,
+    str: str
+  }]
+
+  while (stack.length) {
+    var frame = stack.pop()
+
+    // no edit
+    if (frame.str.length > 0) {
+      var char = frame.str.charAt(0),
+          noEditNode
+
+      if (char in frame.node.edges) {
+        noEditNode = frame.node.edges[char]
+      } else {
+        noEditNode = new lunr.TokenSet
+        frame.node.edges[char] = noEditNode
+      }
+
+      if (frame.str.length == 1) {
+        noEditNode.final = true
+      } else {
+        stack.push({
+          node: noEditNode,
+          editsRemaining: frame.editsRemaining,
+          str: frame.str.slice(1)
+        })
+      }
+    }
+
+    // deletion
+    // can only do a deletion if we have enough edits remaining
+    // and if there are characters left to delete in the string
+    if (frame.editsRemaining > 0 && frame.str.length > 1) {
+      var char = frame.str.charAt(1),
+          deletionNode
+
+      if (char in frame.node.edges) {
+        deletionNode = frame.node.edges[char]
+      } else {
+        deletionNode = new lunr.TokenSet
+        frame.node.edges[char] = deletionNode
+      }
+
+      if (frame.str.length <= 2) {
+        deletionNode.final = true
+      } else {
+        stack.push({
+          node: deletionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str.slice(2)
+        })
+      }
+    }
+
+    // deletion
+    // just removing the last character from the str
+    if (frame.editsRemaining > 0 && frame.str.length == 1) {
+      frame.node.final = true
+    }
+
+    // substitution
+    // can only do a substitution if we have enough edits remaining
+    // and if there are characters left to substitute
+    if (frame.editsRemaining > 0 && frame.str.length >= 1) {
+      if ("*" in frame.node.edges) {
+        var substitutionNode = frame.node.edges["*"]
+      } else {
+        var substitutionNode = new lunr.TokenSet
+        frame.node.edges["*"] = substitutionNode
+      }
+
+      if (frame.str.length == 1) {
+        substitutionNode.final = true
+      } else {
+        stack.push({
+          node: substitutionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str.slice(1)
+        })
+      }
+    }
+
+    // insertion
+    // can only do insertion if there are edits remaining
+    if (frame.editsRemaining > 0) {
+      if ("*" in frame.node.edges) {
+        var insertionNode = frame.node.edges["*"]
+      } else {
+        var insertionNode = new lunr.TokenSet
+        frame.node.edges["*"] = insertionNode
+      }
+
+      if (frame.str.length == 0) {
+        insertionNode.final = true
+      } else {
+        stack.push({
+          node: insertionNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: frame.str
+        })
+      }
+    }
+
+    // transposition
+    // can only do a transposition if there are edits remaining
+    // and there are enough characters to transpose
+    if (frame.editsRemaining > 0 && frame.str.length > 1) {
+      var charA = frame.str.charAt(0),
+          charB = frame.str.charAt(1),
+          transposeNode
+
+      if (charB in frame.node.edges) {
+        transposeNode = frame.node.edges[charB]
+      } else {
+        transposeNode = new lunr.TokenSet
+        frame.node.edges[charB] = transposeNode
+      }
+
+      if (frame.str.length == 1) {
+        transposeNode.final = true
+      } else {
+        stack.push({
+          node: transposeNode,
+          editsRemaining: frame.editsRemaining - 1,
+          str: charA + frame.str.slice(2)
+        })
+      }
+    }
+  }
+
+  return root
+}
+
+/**
+ * Creates a TokenSet from a string.
+ *
+ * The string may contain one or more wildcard characters (*)
+ * that will allow wildcard matching when intersecting with
+ * another TokenSet.
+ *
+ * @param {string} str - The string to create a TokenSet from.
+ * @returns {lunr.TokenSet}
+ */
+lunr.TokenSet.fromString = function (str) {
+  var node = new lunr.TokenSet,
+      root = node,
+      wildcardFound = false
+
+  /*
+   * Iterates through all characters within the passed string
+   * appending a node for each character.
+   *
+   * As soon as a wildcard character is found then a self
+   * referencing edge is introduced to continually match
+   * any number of any characters.
+   */
+  for (var i = 0, len = str.length; i < len; i++) {
+    var char = str[i],
+        final = (i == len - 1)
+
+    if (char == "*") {
+      wildcardFound = true
+      node.edges[char] = node
+      node.final = final
+
+    } else {
+      var next = new lunr.TokenSet
+      next.final = final
+
+      node.edges[char] = next
+      node = next
+
+      // TODO: is this needed anymore?
+      if (wildcardFound) {
+        node.edges["*"] = root
+      }
+    }
+  }
+
+  return root
+}
+
+/**
+ * Converts this TokenSet into an array of strings
+ * contained within the TokenSet.
+ *
+ * @returns {string[]}
+ */
+lunr.TokenSet.prototype.toArray = function () {
+  var words = []
+
+  var stack = [{
+    prefix: "",
+    node: this
+  }]
+
+  while (stack.length) {
+    var frame = stack.pop(),
+        edges = Object.keys(frame.node.edges),
+        len = edges.length
+
+    if (frame.node.final) {
+      words.push(frame.prefix)
+    }
+
+    for (var i = 0; i < len; i++) {
+      var edge = edges[i]
+
+      stack.push({
+        prefix: frame.prefix.concat(edge),
+        node: frame.node.edges[edge]
+      })
+    }
+  }
+
+  return words
+}
+
+/**
+ * Generates a string representation of a TokenSet.
+ *
+ * This is intended to allow TokenSets to be used as keys
+ * in objects, largely to aid the construction and minimisation
+ * of a TokenSet. As such it is not designed to be a human
+ * friendly representation of the TokenSet.
+ *
+ * @returns {string}
+ */
+lunr.TokenSet.prototype.toString = function () {
+  // NOTE: Using Object.keys here as this.edges is very likely
+  // to enter 'hash-mode' with many keys being added
+  //
+  // avoiding a for-in loop here as it leads to the function
+  // being de-optimised (at least in V8). From some simple
+  // benchmarks the performance is comparable, but allowing
+  // V8 to optimize may mean easy performance wins in the future.
+
+  if (this._str) {
+    return this._str
+  }
+
+  var str = this.final ? '1' : '0',
+      labels = Object.keys(this.edges).sort(),
+      len = labels.length
+
+  for (var i = 0; i < len; i++) {
+    var label = labels[i],
+        node = this.edges[label]
+
+    str = str + label + node.id
+  }
+
+  return str
+}
+
+/**
+ * Returns a new TokenSet that is the intersection of
+ * this TokenSet and the passed TokenSet.
+ *
+ * This intersection will take into account any wildcards
+ * contained within the TokenSet.
+ *
+ * @param {lunr.TokenSet} b - An other TokenSet to intersect with.
+ * @returns {lunr.TokenSet}
+ */
+lunr.TokenSet.prototype.intersect = function (b) {
+  var output = new lunr.TokenSet,
+      frame = undefined
+
+  var stack = [{
+    qNode: b,
+    output: output,
+    node: this
+  }]
+
+  while (stack.length) {
+    frame = stack.pop()
+
+    // NOTE: As with the #toString method, we are using
+    // Object.keys and a for loop instead of a for-in loop
+    // as both of these objects enter 'hash' mode, causing
+    // the function to be de-optimised in V8
+    var qEdges = Object.keys(frame.qNode.edges),
+        qLen = qEdges.length,
+        nEdges = Object.keys(frame.node.edges),
+        nLen = nEdges.length
+
+    for (var q = 0; q < qLen; q++) {
+      var qEdge = qEdges[q]
+
+      for (var n = 0; n < nLen; n++) {
+        var nEdge = nEdges[n]
+
+        if (nEdge == qEdge || qEdge == '*') {
+          var node = frame.node.edges[nEdge],
+              qNode = frame.qNode.edges[qEdge],
+              final = node.final && qNode.final,
+              next = undefined
+
+          if (nEdge in frame.output.edges) {
+            // an edge already exists for this character
+            // no need to create a new node, just set the finality
+            // bit unless this node is already final
+            next = frame.output.edges[nEdge]
+            next.final = next.final || final
+
+          } else {
+            // no edge exists yet, must create one
+            // set the finality bit and insert it
+            // into the output
+            next = new lunr.TokenSet
+            next.final = final
+            frame.output.edges[nEdge] = next
+          }
+
+          stack.push({
+            qNode: qNode,
+            output: next,
+            node: node
+          })
+        }
+      }
+    }
+  }
+
+  return output
+}
+lunr.TokenSet.Builder = function () {
+  this.previousWord = ""
+  this.root = new lunr.TokenSet
+  this.uncheckedNodes = []
+  this.minimizedNodes = {}
+}
+
+lunr.TokenSet.Builder.prototype.insert = function (word) {
+  var node,
+      commonPrefix = 0
+
+  if (word < this.previousWord) {
+    throw new Error ("Out of order word insertion")
+  }
+
+  for (var i = 0; i < word.length && i < this.previousWord.length; i++) {
+    if (word[i] != this.previousWord[i]) break
+    commonPrefix++
+  }
+
+  this.minimize(commonPrefix)
+
+  if (this.uncheckedNodes.length == 0) {
+    node = this.root
+  } else {
+    node = this.uncheckedNodes[this.uncheckedNodes.length - 1].child
+  }
+
+  for (var i = commonPrefix; i < word.length; i++) {
+    var nextNode = new lunr.TokenSet,
+        char = word[i]
+
+    node.edges[char] = nextNode
+
+    this.uncheckedNodes.push({
+      parent: node,
+      char: char,
+      child: nextNode
+    })
+
+    node = nextNode
+  }
+
+  node.final = true
+  this.previousWord = word
+}
+
+lunr.TokenSet.Builder.prototype.finish = function () {
+  this.minimize(0)
+}
+
+lunr.TokenSet.Builder.prototype.minimize = function (downTo) {
+  for (var i = this.uncheckedNodes.length - 1; i >= downTo; i--) {
+    var node = this.uncheckedNodes[i],
+        childKey = node.child.toString()
+
+    if (childKey in this.minimizedNodes) {
+      node.parent.edges[node.char] = this.minimizedNodes[childKey]
+    } else {
+      // Cache the key for this node since
+      // we know it can't change anymore
+      node.child._str = childKey
+
+      this.minimizedNodes[childKey] = node.child
+    }
+
+    this.uncheckedNodes.pop()
+  }
+}
+/*!
+ * lunr.Index
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * An index contains the built index of all documents and provides a query interface
+ * to the index.
+ *
+ * Usually instances of lunr.Index will not be created using this constructor, instead
+ * lunr.Builder should be used to construct new indexes, or lunr.Index.load should be
+ * used to load previously built and serialized indexes.
+ *
+ * @constructor
+ * @param {Object} attrs - The attributes of the built search index.
+ * @param {Object} attrs.invertedIndex - An index of term/field to document reference.
+ * @param {Object<string, lunr.Vector>} attrs.documentVectors - Document vectors keyed by document reference.
+ * @param {lunr.TokenSet} attrs.tokenSet - An set of all corpus tokens.
+ * @param {string[]} attrs.fields - The names of indexed document fields.
+ * @param {lunr.Pipeline} attrs.pipeline - The pipeline to use for search terms.
+ */
+lunr.Index = function (attrs) {
+  this.invertedIndex = attrs.invertedIndex
+  this.fieldVectors = attrs.fieldVectors
+  this.tokenSet = attrs.tokenSet
+  this.fields = attrs.fields
+  this.pipeline = attrs.pipeline
+}
+
+/**
+ * A result contains details of a document matching a search query.
+ * @typedef {Object} lunr.Index~Result
+ * @property {string} ref - The reference of the document this result represents.
+ * @property {number} score - A number between 0 and 1 representing how similar this document is to the query.
+ * @property {lunr.MatchData} matchData - Contains metadata about this match including which term(s) caused the match.
+ */
+
+/**
+ * Although lunr provides the ability to create queries using lunr.Query, it also provides a simple
+ * query language which itself is parsed into an instance of lunr.Query.
+ *
+ * For programmatically building queries it is advised to directly use lunr.Query, the query language
+ * is best used for human entered text rather than program generated text.
+ *
+ * At its simplest queries can just be a single term, e.g. `hello`, multiple terms are also supported
+ * and will be combined with OR, e.g `hello world` will match documents that contain either 'hello'
+ * or 'world', though those that contain both will rank higher in the results.
+ *
+ * Wildcards can be included in terms to match one or more unspecified characters, these wildcards can
+ * be inserted anywhere within the term, and more than one wildcard can exist in a single term. Adding
+ * wildcards will increase the number of documents that will be found but can also have a negative
+ * impact on query performance, especially with wildcards at the beginning of a term.
+ *
+ * Terms can be restricted to specific fields, e.g. `title:hello`, only documents with the term
+ * hello in the title field will match this query. Using a field not present in the index will lead
+ * to an error being thrown.
+ *
+ * Modifiers can also be added to terms, lunr supports edit distance and boost modifiers on terms. A term
+ * boost will make documents matching that term score higher, e.g. `foo^5`. Edit distance is also supported
+ * to provide fuzzy matching, e.g. 'hello~2' will match documents with hello with an edit distance of 2.
+ * Avoid large values for edit distance to improve query performance.
+ *
+ * To escape special characters the backslash character '\' can be used, this allows searches to include
+ * characters that would normally be considered modifiers, e.g. `foo\~2` will search for a term "foo~2" instead
+ * of attempting to apply a boost of 2 to the search term "foo".
+ *
+ * @typedef {string} lunr.Index~QueryString
+ * @example <caption>Simple single term query</caption>
+ * hello
+ * @example <caption>Multiple term query</caption>
+ * hello world
+ * @example <caption>term scoped to a field</caption>
+ * title:hello
+ * @example <caption>term with a boost of 10</caption>
+ * hello^10
+ * @example <caption>term with an edit distance of 2</caption>
+ * hello~2
+ */
+
+/**
+ * Performs a search against the index using lunr query syntax.
+ *
+ * Results will be returned sorted by their score, the most relevant results
+ * will be returned first.
+ *
+ * For more programmatic querying use lunr.Index#query.
+ *
+ * @param {lunr.Index~QueryString} queryString - A string containing a lunr query.
+ * @throws {lunr.QueryParseError} If the passed query string cannot be parsed.
+ * @returns {lunr.Index~Result[]}
+ */
+lunr.Index.prototype.search = function (queryString) {
+  return this.query(function (query) {
+    var parser = new lunr.QueryParser(queryString, query)
+    parser.parse()
+  })
+}
+
+/**
+ * A query builder callback provides a query object to be used to express
+ * the query to perform on the index.
+ *
+ * @callback lunr.Index~queryBuilder
+ * @param {lunr.Query} query - The query object to build up.
+ * @this lunr.Query
+ */
+
+/**
+ * Performs a query against the index using the yielded lunr.Query object.
+ *
+ * If performing programmatic queries against the index, this method is preferred
+ * over lunr.Index#search so as to avoid the additional query parsing overhead.
+ *
+ * A query object is yielded to the supplied function which should be used to
+ * express the query to be run against the index.
+ *
+ * Note that although this function takes a callback parameter it is _not_ an
+ * asynchronous operation, the callback is just yielded a query object to be
+ * customized.
+ *
+ * @param {lunr.Index~queryBuilder} fn - A function that is used to build the query.
+ * @returns {lunr.Index~Result[]}
+ */
+lunr.Index.prototype.query = function (fn) {
+  // for each query clause
+  // * process terms
+  // * expand terms from token set
+  // * find matching documents and metadata
+  // * get document vectors
+  // * score documents
+
+  var query = new lunr.Query(this.fields),
+      matchingFields = Object.create(null),
+      queryVectors = Object.create(null),
+      termFieldCache = Object.create(null)
+
+  fn.call(query, query)
+
+  for (var i = 0; i < query.clauses.length; i++) {
+    /*
+     * Unless the pipeline has been disabled for this term, which is
+     * the case for terms with wildcards, we need to pass the clause
+     * term through the search pipeline. A pipeline returns an array
+     * of processed terms. Pipeline functions may expand the passed
+     * term, which means we may end up performing multiple index lookups
+     * for a single query term.
+     */
+    var clause = query.clauses[i],
+        terms = null
+
+    if (clause.usePipeline) {
+      terms = this.pipeline.runString(clause.term)
+    } else {
+      terms = [clause.term]
+    }
+
+    for (var m = 0; m < terms.length; m++) {
+      var term = terms[m]
+
+      /*
+       * Each term returned from the pipeline needs to use the same query
+       * clause object, e.g. the same boost and or edit distance. The
+       * simplest way to do this is to re-use the clause object but mutate
+       * its term property.
+       */
+      clause.term = term
+
+      /*
+       * From the term in the clause we create a token set which will then
+       * be used to intersect the indexes token set to get a list of terms
+       * to lookup in the inverted index
+       */
+      var termTokenSet = lunr.TokenSet.fromClause(clause),
+          expandedTerms = this.tokenSet.intersect(termTokenSet).toArray()
+
+      for (var j = 0; j < expandedTerms.length; j++) {
+        /*
+         * For each term get the posting and termIndex, this is required for
+         * building the query vector.
+         */
+        var expandedTerm = expandedTerms[j],
+            posting = this.invertedIndex[expandedTerm],
+            termIndex = posting._index
+
+        for (var k = 0; k < clause.fields.length; k++) {
+          /*
+           * For each field that this query term is scoped by (by default
+           * all fields are in scope) we need to get all the document refs
+           * that have this term in that field.
+           *
+           * The posting is the entry in the invertedIndex for the matching
+           * term from above.
+           */
+          var field = clause.fields[k],
+              fieldPosting = posting[field],
+              matchingDocumentRefs = Object.keys(fieldPosting),
+              termField = expandedTerm + "/" + field
+
+          /*
+           * To support field level boosts a query vector is created per
+           * field. This vector is populated using the termIndex found for
+           * the term and a unit value with the appropriate boost applied.
+           *
+           * If the query vector for this field does not exist yet it needs
+           * to be created.
+           */
+          if (queryVectors[field] === undefined) {
+            queryVectors[field] = new lunr.Vector
+          }
+
+          /*
+           * Using upsert because there could already be an entry in the vector
+           * for the term we are working with. In that case we just add the scores
+           * together.
+           */
+          queryVectors[field].upsert(termIndex, 1 * clause.boost, function (a, b) { return a + b })
+
+          /**
+           * If we've already seen this term, field combo then we've already collected
+           * the matching documents and metadata, no need to go through all that again
+           */
+          if (termFieldCache[termField]) {
+            continue
+          }
+
+          for (var l = 0; l < matchingDocumentRefs.length; l++) {
+            /*
+             * All metadata for this term/field/document triple
+             * are then extracted and collected into an instance
+             * of lunr.MatchData ready to be returned in the query
+             * results
+             */
+            var matchingDocumentRef = matchingDocumentRefs[l],
+                matchingFieldRef = new lunr.FieldRef (matchingDocumentRef, field),
+                metadata = fieldPosting[matchingDocumentRef],
+                fieldMatch
+
+            if ((fieldMatch = matchingFields[matchingFieldRef]) === undefined) {
+              matchingFields[matchingFieldRef] = new lunr.MatchData (expandedTerm, field, metadata)
+            } else {
+              fieldMatch.add(expandedTerm, field, metadata)
+            }
+
+          }
+
+          termFieldCache[termField] = true
+        }
+      }
+    }
+  }
+
+  var matchingFieldRefs = Object.keys(matchingFields),
+      results = [],
+      matches = Object.create(null)
+
+  for (var i = 0; i < matchingFieldRefs.length; i++) {
+    /*
+     * Currently we have document fields that match the query, but we
+     * need to return documents. The matchData and scores are combined
+     * from multiple fields belonging to the same document.
+     *
+     * Scores are calculated by field, using the query vectors created
+     * above, and combined into a final document score using addition.
+     */
+    var fieldRef = lunr.FieldRef.fromString(matchingFieldRefs[i]),
+        docRef = fieldRef.docRef,
+        fieldVector = this.fieldVectors[fieldRef],
+        score = queryVectors[fieldRef.fieldName].similarity(fieldVector),
+        docMatch
+
+    if ((docMatch = matches[docRef]) !== undefined) {
+      docMatch.score += score
+      docMatch.matchData.combine(matchingFields[fieldRef])
+    } else {
+      var match = {
+        ref: docRef,
+        score: score,
+        matchData: matchingFields[fieldRef]
+      }
+      matches[docRef] = match
+      results.push(match)
+    }
+  }
+
+  /*
+   * Sort the results objects by score, highest first.
+   */
+  return results.sort(function (a, b) {
+    return b.score - a.score
+  })
+}
+
+/**
+ * Prepares the index for JSON serialization.
+ *
+ * The schema for this JSON blob will be described in a
+ * separate JSON schema file.
+ *
+ * @returns {Object}
+ */
+lunr.Index.prototype.toJSON = function () {
+  var invertedIndex = Object.keys(this.invertedIndex)
+    .sort()
+    .map(function (term) {
+      return [term, this.invertedIndex[term]]
+    }, this)
+
+  var fieldVectors = Object.keys(this.fieldVectors)
+    .map(function (ref) {
+      return [ref, this.fieldVectors[ref].toJSON()]
+    }, this)
+
+  return {
+    version: lunr.version,
+    fields: this.fields,
+    fieldVectors: fieldVectors,
+    invertedIndex: invertedIndex,
+    pipeline: this.pipeline.toJSON()
+  }
+}
+
+/**
+ * Loads a previously serialized lunr.Index
+ *
+ * @param {Object} serializedIndex - A previously serialized lunr.Index
+ * @returns {lunr.Index}
+ */
+lunr.Index.load = function (serializedIndex) {
+  var attrs = {},
+      fieldVectors = {},
+      serializedVectors = serializedIndex.fieldVectors,
+      invertedIndex = {},
+      serializedInvertedIndex = serializedIndex.invertedIndex,
+      tokenSetBuilder = new lunr.TokenSet.Builder,
+      pipeline = lunr.Pipeline.load(serializedIndex.pipeline)
+
+  if (serializedIndex.version != lunr.version) {
+    lunr.utils.warn("Version mismatch when loading serialised index. Current version of lunr '" + lunr.version + "' does not match serialized index '" + serializedIndex.version + "'")
+  }
+
+  for (var i = 0; i < serializedVectors.length; i++) {
+    var tuple = serializedVectors[i],
+        ref = tuple[0],
+        elements = tuple[1]
+
+    fieldVectors[ref] = new lunr.Vector(elements)
+  }
+
+  for (var i = 0; i < serializedInvertedIndex.length; i++) {
+    var tuple = serializedInvertedIndex[i],
+        term = tuple[0],
+        posting = tuple[1]
+
+    tokenSetBuilder.insert(term)
+    invertedIndex[term] = posting
+  }
+
+  tokenSetBuilder.finish()
+
+  attrs.fields = serializedIndex.fields
+
+  attrs.fieldVectors = fieldVectors
+  attrs.invertedIndex = invertedIndex
+  attrs.tokenSet = tokenSetBuilder.root
+  attrs.pipeline = pipeline
+
+  return new lunr.Index(attrs)
+}
+/*!
+ * lunr.Builder
+ * Copyright (C) 2018 Oliver Nightingale
+ */
+
+/**
+ * lunr.Builder performs indexing on a set of documents and
+ * returns instances of lunr.Index ready for querying.
+ *
+ * All configuration of the index is done via the builder, the
+ * fields to index, the document reference, the text processing
+ * pipeline and document scoring parameters are all set on the
+ * builder before indexing.
+ *
+ * @constructor
+ * @property {string} _ref - Internal reference to the document reference field.
+ * @property {string[]} _fields - Internal reference to the document fields to index.
+ * @property {object} invertedIndex - The inverted index maps terms to document fields.
+ * @property {object} documentTermFrequencies - Keeps track of document term frequencies.
+ * @property {object} documentLengths - Keeps track of the length of documents added to the index.
+ * @property {lunr.tokenizer} tokenizer - Function for splitting strings into tokens for indexing.
+ * @property {lunr.Pipeline} pipeline - The pipeline performs text processing on tokens before indexing.
+ * @property {lunr.Pipeline} searchPipeline - A pipeline for processing search terms before querying the index.
+ * @property {number} documentCount - Keeps track of the total number of documents indexed.
+ * @property {number} _b - A parameter to control field length normalization, setting this to 0 disabled normalization, 1 fully normalizes field lengths, the default value is 0.75.
+ * @property {number} _k1 - A parameter to control how quickly an increase in term frequency results in term frequency saturation, the default value is 1.2.
+ * @property {number} termIndex - A counter incremented for each unique term, used to identify a terms position in the vector space.
+ * @property {array} metadataWhitelist - A list of metadata keys that have been whitelisted for entry in the index.
+ */
+lunr.Builder = function () {
+  this._ref = "id"
+  this._fields = []
+  this.invertedIndex = Object.create(null)
+  this.fieldTermFrequencies = {}
+  this.fieldLengths = {}
+  this.tokenizer = lunr.tokenizer
+  this.pipeline = new lunr.Pipeline
+  this.searchPipeline = new lunr.Pipeline
+  this.documentCount = 0
+  this._b = 0.75
+  this._k1 = 1.2
+  this.termIndex = 0
+  this.metadataWhitelist = []
+}
+
+/**
+ * Sets the document field used as the document reference. Every document must have this field.
+ * The type of this field in the document should be a string, if it is not a string it will be
+ * coerced into a string by calling toString.
+ *
+ * The default ref is 'id'.
+ *
+ * The ref should _not_ be changed during indexing, it should be set before any documents are
+ * added to the index. Changing it during indexing can lead to inconsistent results.
+ *
+ * @param {string} ref - The name of the reference field in the document.
+ */
+lunr.Builder.prototype.ref = function (ref) {
+  this._ref = ref
+}
+
+/**
+ * Adds a field to the list of document fields that will be indexed. Every document being
+ * indexed should have this field. Null values for this field in indexed documents will
+ * not cause errors but will limit the chance of that document being retrieved by searches.
+ *
+ * All fields should be added before adding documents to the index. Adding fields after
+ * a document has been indexed will have no effect on already indexed documents.
+ *
+ * @param {string} field - The name of a field to index in all documents.
+ */
+lunr.Builder.prototype.field = function (field) {
+  this._fields.push(field)
+}
+
+/**
+ * A parameter to tune the amount of field length normalisation that is applied when
+ * calculating relevance scores. A value of 0 will completely disable any normalisation
+ * and a value of 1 will fully normalise field lengths. The default is 0.75. Values of b
+ * will be clamped to the range 0 - 1.
+ *
+ * @param {number} number - The value to set for this tuning parameter.
+ */
+lunr.Builder.prototype.b = function (number) {
+  if (number < 0) {
+    this._b = 0
+  } else if (number > 1) {
+    this._b = 1
+  } else {
+    this._b = number
+  }
+}
+
+/**
+ * A parameter that controls the speed at which a rise in term frequency results in term
+ * frequency saturation. The default value is 1.2. Setting this to a higher value will give
+ * slower saturation levels, a lower value will result in quicker saturation.
+ *
+ * @param {number} number - The value to set for this tuning parameter.
+ */
+lunr.Builder.prototype.k1 = function (number) {
+  this._k1 = number
+}
+
+/**
+ * Adds a document to the index.
+ *
+ * Before adding fields to the index the index should have been fully setup, with the document
+ * ref and all fields to index already having been specified.
+ *
+ * The document must have a field name as specified by the ref (by default this is 'id') and
+ * it should have all fields defined for indexing, though null or undefined values will not
+ * cause errors.
+ *
+ * @param {object} doc - The document to add to the index.
+ */
+lunr.Builder.prototype.add = function (doc) {
+  var docRef = doc[this._ref]
+
+  this.documentCount += 1
+
+  for (var i = 0; i < this._fields.length; i++) {
+    var fieldName = this._fields[i],
+        field = doc[fieldName],
+        tokens = this.tokenizer(field),
+        terms = this.pipeline.run(tokens),
+        fieldRef = new lunr.FieldRef (docRef, fieldName),
+        fieldTerms = Object.create(null)
+
+    this.fieldTermFrequencies[fieldRef] = fieldTerms
+    this.fieldLengths[fieldRef] = 0
+
+    // store the length of this field for this document
+    this.fieldLengths[fieldRef] += terms.length
+
+    // calculate term frequencies for this field
+    for (var j = 0; j < terms.length; j++) {
+      var term = terms[j]
+
+      if (fieldTerms[term] == undefined) {
+        fieldTerms[term] = 0
+      }
+
+      fieldTerms[term] += 1
+
+      // add to inverted index
+      // create an initial posting if one doesn't exist
+      if (this.invertedIndex[term] == undefined) {
+        var posting = Object.create(null)
+        posting["_index"] = this.termIndex
+        this.termIndex += 1
+
+        for (var k = 0; k < this._fields.length; k++) {
+          posting[this._fields[k]] = Object.create(null)
+        }
+
+        this.invertedIndex[term] = posting
+      }
+
+      // add an entry for this term/fieldName/docRef to the invertedIndex
+      if (this.invertedIndex[term][fieldName][docRef] == undefined) {
+        this.invertedIndex[term][fieldName][docRef] = Object.create(null)
+      }
+
+      // store all whitelisted metadata about this token in the
+      // inverted index
+      for (var l = 0; l < this.metadataWhitelist.length; l++) {
+        var metadataKey = this.metadataWhitelist[l],
+            metadata = term.metadata[metadataKey]
+
+        if (this.invertedIndex[term][fieldName][docRef][metadataKey] == undefined) {
+          this.invertedIndex[term][fieldName][docRef][metadataKey] = []
+        }
+
+        this.invertedIndex[term][fieldName][docRef][metadataKey].push(metadata)
+      }
+    }
+
+  }
+}
+
+/**
+ * Calculates the average document length for this index
+ *
+ * @private
+ */
+lunr.Builder.prototype.calculateAverageFieldLengths = function () {
+
+  var fieldRefs = Object.keys(this.fieldLengths),
+      numberOfFields = fieldRefs.length,
+      accumulator = {},
+      documentsWithField = {}
+
+  for (var i = 0; i < numberOfFields; i++) {
+    var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),
+        field = fieldRef.fieldName
+
+    documentsWithField[field] || (documentsWithField[field] = 0)
+    documentsWithField[field] += 1
+
+    accumulator[field] || (accumulator[field] = 0)
+    accumulator[field] += this.fieldLengths[fieldRef]
+  }
+
+  for (var i = 0; i < this._fields.length; i++) {
+    var field = this._fields[i]
+    accumulator[field] = accumulator[field] / documentsWithField[field]
+  }
+
+  this.averageFieldLength = accumulator
+}
+
+/**
+ * Builds a vector space model of every document using lunr.Vector
+ *
+ * @private
+ */
+lunr.Builder.prototype.createFieldVectors = function () {
+  var fieldVectors = {},
+      fieldRefs = Object.keys(this.fieldTermFrequencies),
+      fieldRefsLength = fieldRefs.length,
+      termIdfCache = Object.create(null)
+
+  for (var i = 0; i < fieldRefsLength; i++) {
+    var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),
+        field = fieldRef.fieldName,
+        fieldLength = this.fieldLengths[fieldRef],
+        fieldVector = new lunr.Vector,
+        termFrequencies = this.fieldTermFrequencies[fieldRef],
+        terms = Object.keys(termFrequencies),
+        termsLength = terms.length
+
+    for (var j = 0; j < termsLength; j++) {
+      var term = terms[j],
+          tf = termFrequencies[term],
+          termIndex = this.invertedIndex[term]._index,
+          idf, score, scoreWithPrecision
+
+      if (termIdfCache[term] === undefined) {
+        idf = lunr.idf(this.invertedIndex[term], this.documentCount)
+        termIdfCache[term] = idf
+      } else {
+        idf = termIdfCache[term]
+      }
+
+      score = idf * ((this._k1 + 1) * tf) / (this._k1 * (1 - this._b + this._b * (fieldLength / this.averageFieldLength[field])) + tf)
+      scoreWithPrecision = Math.round(score * 1000) / 1000
+      // Converts 1.23456789 to 1.234.
+      // Reducing the precision so that the vectors take up less
+      // space when serialised. Doing it now so that they behave
+      // the same before and after serialisation. Also, this is
+      // the fastest approach to reducing a number's precision in
+      // JavaScript.
+
+      fieldVector.insert(termIndex, scoreWithPrecision)
+    }
+
+    fieldVectors[fieldRef] = fieldVector
+  }
+
+  this.fieldVectors = fieldVectors
+}
+
+/**
+ * Creates a token set of all tokens in the index using lunr.TokenSet
+ *
+ * @private
+ */
+lunr.Builder.prototype.createTokenSet = function () {
+  this.tokenSet = lunr.TokenSet.fromArray(
+    Object.keys(this.invertedIndex).sort()
+  )
+}
+
+/**
+ * Builds the index, creating an instance of lunr.Index.
+ *
+ * This completes the indexing process and should only be called
+ * once all documents have been added to the index.
+ *
+ * @returns {lunr.Index}
+ */
+lunr.Builder.prototype.build = function () {
+  this.calculateAverageFieldLengths()
+  this.createFieldVectors()
+  this.createTokenSet()
+
+  return new lunr.Index({
+    invertedIndex: this.invertedIndex,
+    fieldVectors: this.fieldVectors,
+    tokenSet: this.tokenSet,
+    fields: this._fields,
+    pipeline: this.searchPipeline
+  })
+}
+
+/**
+ * Applies a plugin to the index builder.
+ *
+ * A plugin is a function that is called with the index builder as its context.
+ * Plugins can be used to customise or extend the behaviour of the index
+ * in some way. A plugin is just a function, that encapsulated the custom
+ * behaviour that should be applied when building the index.
+ *
+ * The plugin function will be called with the index builder as its argument, additional
+ * arguments can also be passed when calling use. The function will be called
+ * with the index builder as its context.
+ *
+ * @param {Function} plugin The plugin to apply.
+ */
+lunr.Builder.prototype.use = function (fn) {
+  var args = Array.prototype.slice.call(arguments, 1)
+  args.unshift(this)
+  fn.apply(this, args)
+}
+/**
+ * Contains and collects metadata about a matching document.
+ * A single instance of lunr.MatchData is returned as part of every
+ * lunr.Index~Result.
+ *
+ * @constructor
+ * @param {string} term - The term this match data is associated with
+ * @param {string} field - The field in which the term was found
+ * @param {object} metadata - The metadata recorded about this term in this field
+ * @property {object} metadata - A cloned collection of metadata associated with this document.
+ * @see {@link lunr.Index~Result}
+ */
+lunr.MatchData = function (term, field, metadata) {
+  var clonedMetadata = Object.create(null),
+      metadataKeys = Object.keys(metadata)
+
+  // Cloning the metadata to prevent the original
+  // being mutated during match data combination.
+  // Metadata is kept in an array within the inverted
+  // index so cloning the data can be done with
+  // Array#slice
+  for (var i = 0; i < metadataKeys.length; i++) {
+    var key = metadataKeys[i]
+    clonedMetadata[key] = metadata[key].slice()
+  }
+
+  this.metadata = Object.create(null)
+  this.metadata[term] = Object.create(null)
+  this.metadata[term][field] = clonedMetadata
+}
+
+/**
+ * An instance of lunr.MatchData will be created for every term that matches a
+ * document. However only one instance is required in a lunr.Index~Result. This
+ * method combines metadata from another instance of lunr.MatchData with this
+ * objects metadata.
+ *
+ * @param {lunr.MatchData} otherMatchData - Another instance of match data to merge with this one.
+ * @see {@link lunr.Index~Result}
+ */
+lunr.MatchData.prototype.combine = function (otherMatchData) {
+  var terms = Object.keys(otherMatchData.metadata)
+
+  for (var i = 0; i < terms.length; i++) {
+    var term = terms[i],
+        fields = Object.keys(otherMatchData.metadata[term])
+
+    if (this.metadata[term] == undefined) {
+      this.metadata[term] = Object.create(null)
+    }
+
+    for (var j = 0; j < fields.length; j++) {
+      var field = fields[j],
+          keys = Object.keys(otherMatchData.metadata[term][field])
+
+      if (this.metadata[term][field] == undefined) {
+        this.metadata[term][field] = Object.create(null)
+      }
+
+      for (var k = 0; k < keys.length; k++) {
+        var key = keys[k]
+
+        if (this.metadata[term][field][key] == undefined) {
+          this.metadata[term][field][key] = otherMatchData.metadata[term][field][key]
+        } else {
+          this.metadata[term][field][key] = this.metadata[term][field][key].concat(otherMatchData.metadata[term][field][key])
+        }
+
+      }
+    }
+  }
+}
+
+/**
+ * Add metadata for a term/field pair to this instance of match data.
+ *
+ * @param {string} term - The term this match data is associated with
+ * @param {string} field - The field in which the term was found
+ * @param {object} metadata - The metadata recorded about this term in this field
+ */
+lunr.MatchData.prototype.add = function (term, field, metadata) {
+  if (!(term in this.metadata)) {
+    this.metadata[term] = Object.create(null)
+    this.metadata[term][field] = metadata
+    return
+  }
+
+  if (!(field in this.metadata[term])) {
+    this.metadata[term][field] = metadata
+    return
+  }
+
+  var metadataKeys = Object.keys(metadata)
+
+  for (var i = 0; i < metadataKeys.length; i++) {
+    var key = metadataKeys[i]
+
+    if (key in this.metadata[term][field]) {
+      this.metadata[term][field][key] = this.metadata[term][field][key].concat(metadata[key])
+    } else {
+      this.metadata[term][field][key] = metadata[key]
+    }
+  }
+}
+/**
+ * A lunr.Query provides a programmatic way of defining queries to be performed
+ * against a {@link lunr.Index}.
+ *
+ * Prefer constructing a lunr.Query using the {@link lunr.Index#query} method
+ * so the query object is pre-initialized with the right index fields.
+ *
+ * @constructor
+ * @property {lunr.Query~Clause[]} clauses - An array of query clauses.
+ * @property {string[]} allFields - An array of all available fields in a lunr.Index.
+ */
+lunr.Query = function (allFields) {
+  this.clauses = []
+  this.allFields = allFields
+}
+
+/**
+ * Constants for indicating what kind of automatic wildcard insertion will be used when constructing a query clause.
+ *
+ * This allows wildcards to be added to the beginning and end of a term without having to manually do any string
+ * concatenation.
+ *
+ * The wildcard constants can be bitwise combined to select both leading and trailing wildcards.
+ *
+ * @constant
+ * @default
+ * @property {number} wildcard.NONE - The term will have no wildcards inserted, this is the default behaviour
+ * @property {number} wildcard.LEADING - Prepend the term with a wildcard, unless a leading wildcard already exists
+ * @property {number} wildcard.TRAILING - Append a wildcard to the term, unless a trailing wildcard already exists
+ * @see lunr.Query~Clause
+ * @see lunr.Query#clause
+ * @see lunr.Query#term
+ * @example <caption>query term with trailing wildcard</caption>
+ * query.term('foo', { wildcard: lunr.Query.wildcard.TRAILING })
+ * @example <caption>query term with leading and trailing wildcard</caption>
+ * query.term('foo', {
+ *   wildcard: lunr.Query.wildcard.LEADING | lunr.Query.wildcard.TRAILING
+ * })
+ */
+lunr.Query.wildcard = new String ("*")
+lunr.Query.wildcard.NONE = 0
+lunr.Query.wildcard.LEADING = 1
+lunr.Query.wildcard.TRAILING = 2
+
+/**
+ * A single clause in a {@link lunr.Query} contains a term and details on how to
+ * match that term against a {@link lunr.Index}.
+ *
+ * @typedef {Object} lunr.Query~Clause
+ * @property {string[]} fields - The fields in an index this clause should be matched against.
+ * @property {number} [boost=1] - Any boost that should be applied when matching this clause.
+ * @property {number} [editDistance] - Whether the term should have fuzzy matching applied, and how fuzzy the match should be.
+ * @property {boolean} [usePipeline] - Whether the term should be passed through the search pipeline.
+ * @property {number} [wildcard=0] - Whether the term should have wildcards appended or prepended.
+ */
+
+/**
+ * Adds a {@link lunr.Query~Clause} to this query.
+ *
+ * Unless the clause contains the fields to be matched all fields will be matched. In addition
+ * a default boost of 1 is applied to the clause.
+ *
+ * @param {lunr.Query~Clause} clause - The clause to add to this query.
+ * @see lunr.Query~Clause
+ * @returns {lunr.Query}
+ */
+lunr.Query.prototype.clause = function (clause) {
+  if (!('fields' in clause)) {
+    clause.fields = this.allFields
+  }
+
+  if (!('boost' in clause)) {
+    clause.boost = 1
+  }
+
+  if (!('usePipeline' in clause)) {
+    clause.usePipeline = true
+  }
+
+  if (!('wildcard' in clause)) {
+    clause.wildcard = lunr.Query.wildcard.NONE
+  }
+
+  if ((clause.wildcard & lunr.Query.wildcard.LEADING) && (clause.term.charAt(0) != lunr.Query.wildcard)) {
+    clause.term = "*" + clause.term
+  }
+
+  if ((clause.wildcard & lunr.Query.wildcard.TRAILING) && (clause.term.slice(-1) != lunr.Query.wildcard)) {
+    clause.term = "" + clause.term + "*"
+  }
+
+  this.clauses.push(clause)
+
+  return this
+}
+
+/**
+ * Adds a term to the current query, under the covers this will create a {@link lunr.Query~Clause}
+ * to the list of clauses that make up this query.
+ *
+ * @param {string} term - The term to add to the query.
+ * @param {Object} [options] - Any additional properties to add to the query clause.
+ * @returns {lunr.Query}
+ * @see lunr.Query#clause
+ * @see lunr.Query~Clause
+ * @example <caption>adding a single term to a query</caption>
+ * query.term("foo")
+ * @example <caption>adding a single term to a query and specifying search fields, term boost and automatic trailing wildcard</caption>
+ * query.term("foo", {
+ *   fields: ["title"],
+ *   boost: 10,
+ *   wildcard: lunr.Query.wildcard.TRAILING
+ * })
+ */
+lunr.Query.prototype.term = function (term, options) {
+  var clause = options || {}
+  clause.term = term
+
+  this.clause(clause)
+
+  return this
+}
+lunr.QueryParseError = function (message, start, end) {
+  this.name = "QueryParseError"
+  this.message = message
+  this.start = start
+  this.end = end
+}
+
+lunr.QueryParseError.prototype = new Error
+lunr.QueryLexer = function (str) {
+  this.lexemes = []
+  this.str = str
+  this.length = str.length
+  this.pos = 0
+  this.start = 0
+  this.escapeCharPositions = []
+}
+
+lunr.QueryLexer.prototype.run = function () {
+  var state = lunr.QueryLexer.lexText
+
+  while (state) {
+    state = state(this)
+  }
+}
+
+lunr.QueryLexer.prototype.sliceString = function () {
+  var subSlices = [],
+      sliceStart = this.start,
+      sliceEnd = this.pos
+
+  for (var i = 0; i < this.escapeCharPositions.length; i++) {
+    sliceEnd = this.escapeCharPositions[i]
+    subSlices.push(this.str.slice(sliceStart, sliceEnd))
+    sliceStart = sliceEnd + 1
+  }
+
+  subSlices.push(this.str.slice(sliceStart, this.pos))
+  this.escapeCharPositions.length = 0
+
+  return subSlices.join('')
+}
+
+lunr.QueryLexer.prototype.emit = function (type) {
+  this.lexemes.push({
+    type: type,
+    str: this.sliceString(),
+    start: this.start,
+    end: this.pos
+  })
+
+  this.start = this.pos
+}
+
+lunr.QueryLexer.prototype.escapeCharacter = function () {
+  this.escapeCharPositions.push(this.pos - 1)
+  this.pos += 1
+}
+
+lunr.QueryLexer.prototype.next = function () {
+  if (this.pos >= this.length) {
+    return lunr.QueryLexer.EOS
+  }
+
+  var char = this.str.charAt(this.pos)
+  this.pos += 1
+  return char
+}
+
+lunr.QueryLexer.prototype.width = function () {
+  return this.pos - this.start
+}
+
+lunr.QueryLexer.prototype.ignore = function () {
+  if (this.start == this.pos) {
+    this.pos += 1
+  }
+
+  this.start = this.pos
+}
+
+lunr.QueryLexer.prototype.backup = function () {
+  this.pos -= 1
+}
+
+lunr.QueryLexer.prototype.acceptDigitRun = function () {
+  var char, charCode
+
+  do {
+    char = this.next()
+    charCode = char.charCodeAt(0)
+  } while (charCode > 47 && charCode < 58)
+
+  if (char != lunr.QueryLexer.EOS) {
+    this.backup()
+  }
+}
+
+lunr.QueryLexer.prototype.more = function () {
+  return this.pos < this.length
+}
+
+lunr.QueryLexer.EOS = 'EOS'
+lunr.QueryLexer.FIELD = 'FIELD'
+lunr.QueryLexer.TERM = 'TERM'
+lunr.QueryLexer.EDIT_DISTANCE = 'EDIT_DISTANCE'
+lunr.QueryLexer.BOOST = 'BOOST'
+
+lunr.QueryLexer.lexField = function (lexer) {
+  lexer.backup()
+  lexer.emit(lunr.QueryLexer.FIELD)
+  lexer.ignore()
+  return lunr.QueryLexer.lexText
+}
+
+lunr.QueryLexer.lexTerm = function (lexer) {
+  if (lexer.width() > 1) {
+    lexer.backup()
+    lexer.emit(lunr.QueryLexer.TERM)
+  }
+
+  lexer.ignore()
+
+  if (lexer.more()) {
+    return lunr.QueryLexer.lexText
+  }
+}
+
+lunr.QueryLexer.lexEditDistance = function (lexer) {
+  lexer.ignore()
+  lexer.acceptDigitRun()
+  lexer.emit(lunr.QueryLexer.EDIT_DISTANCE)
+  return lunr.QueryLexer.lexText
+}
+
+lunr.QueryLexer.lexBoost = function (lexer) {
+  lexer.ignore()
+  lexer.acceptDigitRun()
+  lexer.emit(lunr.QueryLexer.BOOST)
+  return lunr.QueryLexer.lexText
+}
+
+lunr.QueryLexer.lexEOS = function (lexer) {
+  if (lexer.width() > 0) {
+    lexer.emit(lunr.QueryLexer.TERM)
+  }
+}
+
+// This matches the separator used when tokenising fields
+// within a document. These should match otherwise it is
+// not possible to search for some tokens within a document.
+//
+// It is possible for the user to change the separator on the
+// tokenizer so it _might_ clash with any other of the special
+// characters already used within the search string, e.g. :.
+//
+// This means that it is possible to change the separator in
+// such a way that makes some words unsearchable using a search
+// string.
+lunr.QueryLexer.termSeparator = lunr.tokenizer.separator
+
+lunr.QueryLexer.lexText = function (lexer) {
+  while (true) {
+    var char = lexer.next()
+
+    if (char == lunr.QueryLexer.EOS) {
+      return lunr.QueryLexer.lexEOS
+    }
+
+    // Escape character is '\'
+    if (char.charCodeAt(0) == 92) {
+      lexer.escapeCharacter()
+      continue
+    }
+
+    if (char == ":") {
+      return lunr.QueryLexer.lexField
+    }
+
+    if (char == "~") {
+      lexer.backup()
+      if (lexer.width() > 0) {
+        lexer.emit(lunr.QueryLexer.TERM)
+      }
+      return lunr.QueryLexer.lexEditDistance
+    }
+
+    if (char == "^") {
+      lexer.backup()
+      if (lexer.width() > 0) {
+        lexer.emit(lunr.QueryLexer.TERM)
+      }
+      return lunr.QueryLexer.lexBoost
+    }
+
+    if (char.match(lunr.QueryLexer.termSeparator)) {
+      return lunr.QueryLexer.lexTerm
+    }
+  }
+}
+
+lunr.QueryParser = function (str, query) {
+  this.lexer = new lunr.QueryLexer (str)
+  this.query = query
+  this.currentClause = {}
+  this.lexemeIdx = 0
+}
+
+lunr.QueryParser.prototype.parse = function () {
+  this.lexer.run()
+  this.lexemes = this.lexer.lexemes
+
+  var state = lunr.QueryParser.parseFieldOrTerm
+
+  while (state) {
+    state = state(this)
+  }
+
+  return this.query
+}
+
+lunr.QueryParser.prototype.peekLexeme = function () {
+  return this.lexemes[this.lexemeIdx]
+}
+
+lunr.QueryParser.prototype.consumeLexeme = function () {
+  var lexeme = this.peekLexeme()
+  this.lexemeIdx += 1
+  return lexeme
+}
+
+lunr.QueryParser.prototype.nextClause = function () {
+  var completedClause = this.currentClause
+  this.query.clause(completedClause)
+  this.currentClause = {}
+}
+
+lunr.QueryParser.parseFieldOrTerm = function (parser) {
+  var lexeme = parser.peekLexeme()
+
+  if (lexeme == undefined) {
+    return
+  }
+
+  switch (lexeme.type) {
+    case lunr.QueryLexer.FIELD:
+      return lunr.QueryParser.parseField
+    case lunr.QueryLexer.TERM:
+      return lunr.QueryParser.parseTerm
+    default:
+      var errorMessage = "expected either a field or a term, found " + lexeme.type
+
+      if (lexeme.str.length >= 1) {
+        errorMessage += " with value '" + lexeme.str + "'"
+      }
+
+      throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
+  }
+}
+
+lunr.QueryParser.parseField = function (parser) {
+  var lexeme = parser.consumeLexeme()
+
+  if (lexeme == undefined) {
+    return
+  }
+
+  if (parser.query.allFields.indexOf(lexeme.str) == -1) {
+    var possibleFields = parser.query.allFields.map(function (f) { return "'" + f + "'" }).join(', '),
+        errorMessage = "unrecognised field '" + lexeme.str + "', possible fields: " + possibleFields
+
+    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
+  }
+
+  parser.currentClause.fields = [lexeme.str]
+
+  var nextLexeme = parser.peekLexeme()
+
+  if (nextLexeme == undefined) {
+    var errorMessage = "expecting term, found nothing"
+    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
+  }
+
+  switch (nextLexeme.type) {
+    case lunr.QueryLexer.TERM:
+      return lunr.QueryParser.parseTerm
+    default:
+      var errorMessage = "expecting term, found '" + nextLexeme.type + "'"
+      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
+  }
+}
+
+lunr.QueryParser.parseTerm = function (parser) {
+  var lexeme = parser.consumeLexeme()
+
+  if (lexeme == undefined) {
+    return
+  }
+
+  parser.currentClause.term = lexeme.str.toLowerCase()
+
+  if (lexeme.str.indexOf("*") != -1) {
+    parser.currentClause.usePipeline = false
+  }
+
+  var nextLexeme = parser.peekLexeme()
+
+  if (nextLexeme == undefined) {
+    parser.nextClause()
+    return
+  }
+
+  switch (nextLexeme.type) {
+    case lunr.QueryLexer.TERM:
+      parser.nextClause()
+      return lunr.QueryParser.parseTerm
+    case lunr.QueryLexer.FIELD:
+      parser.nextClause()
+      return lunr.QueryParser.parseField
+    case lunr.QueryLexer.EDIT_DISTANCE:
+      return lunr.QueryParser.parseEditDistance
+    case lunr.QueryLexer.BOOST:
+      return lunr.QueryParser.parseBoost
+    default:
+      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
+      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
+  }
+}
+
+lunr.QueryParser.parseEditDistance = function (parser) {
+  var lexeme = parser.consumeLexeme()
+
+  if (lexeme == undefined) {
+    return
+  }
+
+  var editDistance = parseInt(lexeme.str, 10)
+
+  if (isNaN(editDistance)) {
+    var errorMessage = "edit distance must be numeric"
+    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
+  }
+
+  parser.currentClause.editDistance = editDistance
+
+  var nextLexeme = parser.peekLexeme()
+
+  if (nextLexeme == undefined) {
+    parser.nextClause()
+    return
+  }
+
+  switch (nextLexeme.type) {
+    case lunr.QueryLexer.TERM:
+      parser.nextClause()
+      return lunr.QueryParser.parseTerm
+    case lunr.QueryLexer.FIELD:
+      parser.nextClause()
+      return lunr.QueryParser.parseField
+    case lunr.QueryLexer.EDIT_DISTANCE:
+      return lunr.QueryParser.parseEditDistance
+    case lunr.QueryLexer.BOOST:
+      return lunr.QueryParser.parseBoost
+    default:
+      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
+      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
+  }
+}
+
+lunr.QueryParser.parseBoost = function (parser) {
+  var lexeme = parser.consumeLexeme()
+
+  if (lexeme == undefined) {
+    return
+  }
+
+  var boost = parseInt(lexeme.str, 10)
+
+  if (isNaN(boost)) {
+    var errorMessage = "boost must be numeric"
+    throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)
+  }
+
+  parser.currentClause.boost = boost
+
+  var nextLexeme = parser.peekLexeme()
+
+  if (nextLexeme == undefined) {
+    parser.nextClause()
+    return
+  }
+
+  switch (nextLexeme.type) {
+    case lunr.QueryLexer.TERM:
+      parser.nextClause()
+      return lunr.QueryParser.parseTerm
+    case lunr.QueryLexer.FIELD:
+      parser.nextClause()
+      return lunr.QueryParser.parseField
+    case lunr.QueryLexer.EDIT_DISTANCE:
+      return lunr.QueryParser.parseEditDistance
+    case lunr.QueryLexer.BOOST:
+      return lunr.QueryParser.parseBoost
+    default:
+      var errorMessage = "Unexpected lexeme type '" + nextLexeme.type + "'"
+      throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)
+  }
+}
+
+  /**
+   * export the module via AMD, CommonJS or as a browser global
+   * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js
+   */
+  ;(function (root, factory) {
+    if (typeof define === 'function' && define.amd) {
+      // AMD. Register as an anonymous module.
+      define(factory)
+    } else if (typeof exports === 'object') {
+      /**
+       * Node. Does not work with strict CommonJS, but
+       * only CommonJS-like enviroments that support module.exports,
+       * like Node.
+       */
+      module.exports = factory()
+    } else {
+      // Browser globals (root is window)
+      root.lunr = factory()
+    }
+  }(this, function () {
+    /**
+     * Just return a value to define the module export.
+     * This example returns an object, but the module
+     * can return a function as the exported value.
+     */
+    return lunr
+  }))
+})();
diff --git a/search/lunr.min.js b/search/lunr.min.js
deleted file mode 100755
index b0198df..0000000
--- a/search/lunr.min.js
+++ /dev/null
@@ -1,7 +0,0 @@
-/**
- * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 0.7.0
- * Copyright (C) 2016 Oliver Nightingale
- * MIT Licensed
- * @license
- */
-!function(){var t=function(e){var n=new t.Index;return n.pipeline.add(t.trimmer,t.stopWordFilter,t.stemmer),e&&e.call(n,n),n};t.version="0.7.0",t.utils={},t.utils.warn=function(t){return function(e){t.console&&console.warn&&console.warn(e)}}(this),t.utils.asString=function(t){return void 0===t||null===t?"":t.toString()},t.EventEmitter=function(){this.events={}},t.EventEmitter.prototype.addListener=function(){var t=Array.prototype.slice.call(arguments),e=t.pop(),n=t;if("function"!=typeof e)throw new TypeError("last argument must be a function");n.forEach(function(t){this.hasHandler(t)||(this.events[t]=[]),this.events[t].push(e)},this)},t.EventEmitter.prototype.removeListener=function(t,e){if(this.hasHandler(t)){var n=this.events[t].indexOf(e);this.events[t].splice(n,1),this.events[t].length||delete this.events[t]}},t.EventEmitter.prototype.emit=function(t){if(this.hasHandler(t)){var e=Array.prototype.slice.call(arguments,1);this.events[t].forEach(function(t){t.apply(void 0,e)})}},t.EventEmitter.prototype.hasHandler=function(t){return t in this.events},t.tokenizer=function(e){return arguments.length&&null!=e&&void 0!=e?Array.isArray(e)?e.map(function(e){return t.utils.asString(e).toLowerCase()}):e.toString().trim().toLowerCase().split(t.tokenizer.seperator):[]},t.tokenizer.seperator=/[\s\-]+/,t.tokenizer.load=function(t){var e=this.registeredFunctions[t];if(!e)throw new Error("Cannot load un-registered function: "+t);return e},t.tokenizer.label="default",t.tokenizer.registeredFunctions={"default":t.tokenizer},t.tokenizer.registerFunction=function(e,n){n in this.registeredFunctions&&t.utils.warn("Overwriting existing tokenizer: "+n),e.label=n,this.registeredFunctions[n]=e},t.Pipeline=function(){this._stack=[]},t.Pipeline.registeredFunctions={},t.Pipeline.registerFunction=function(e,n){n in this.registeredFunctions&&t.utils.warn("Overwriting existing registered function: "+n),e.label=n,t.Pipeline.registeredFunctions[e.label]=e},t.Pipeline.warnIfFunctionNotRegistered=function(e){var n=e.label&&e.label in this.registeredFunctions;n||t.utils.warn("Function is not registered with pipeline. This may cause problems when serialising the index.\n",e)},t.Pipeline.load=function(e){var n=new t.Pipeline;return e.forEach(function(e){var i=t.Pipeline.registeredFunctions[e];if(!i)throw new Error("Cannot load un-registered function: "+e);n.add(i)}),n},t.Pipeline.prototype.add=function(){var e=Array.prototype.slice.call(arguments);e.forEach(function(e){t.Pipeline.warnIfFunctionNotRegistered(e),this._stack.push(e)},this)},t.Pipeline.prototype.after=function(e,n){t.Pipeline.warnIfFunctionNotRegistered(n);var i=this._stack.indexOf(e);if(-1==i)throw new Error("Cannot find existingFn");i+=1,this._stack.splice(i,0,n)},t.Pipeline.prototype.before=function(e,n){t.Pipeline.warnIfFunctionNotRegistered(n);var i=this._stack.indexOf(e);if(-1==i)throw new Error("Cannot find existingFn");this._stack.splice(i,0,n)},t.Pipeline.prototype.remove=function(t){var e=this._stack.indexOf(t);-1!=e&&this._stack.splice(e,1)},t.Pipeline.prototype.run=function(t){for(var e=[],n=t.length,i=this._stack.length,r=0;n>r;r++){for(var o=t[r],s=0;i>s&&(o=this._stack[s](o,r,t),void 0!==o&&""!==o);s++);void 0!==o&&""!==o&&e.push(o)}return e},t.Pipeline.prototype.reset=function(){this._stack=[]},t.Pipeline.prototype.toJSON=function(){return this._stack.map(function(e){return t.Pipeline.warnIfFunctionNotRegistered(e),e.label})},t.Vector=function(){this._magnitude=null,this.list=void 0,this.length=0},t.Vector.Node=function(t,e,n){this.idx=t,this.val=e,this.next=n},t.Vector.prototype.insert=function(e,n){this._magnitude=void 0;var i=this.list;if(!i)return this.list=new t.Vector.Node(e,n,i),this.length++;if(e<i.idx)return this.list=new t.Vector.Node(e,n,i),this.length++;for(var r=i,o=i.next;void 0!=o;){if(e<o.idx)return r.next=new t.Vector.Node(e,n,o),this.length++;r=o,o=o.next}return r.next=new t.Vector.Node(e,n,o),this.length++},t.Vector.prototype.magnitude=function(){if(this._magnitude)return this._magnitude;for(var t,e=this.list,n=0;e;)t=e.val,n+=t*t,e=e.next;return this._magnitude=Math.sqrt(n)},t.Vector.prototype.dot=function(t){for(var e=this.list,n=t.list,i=0;e&&n;)e.idx<n.idx?e=e.next:e.idx>n.idx?n=n.next:(i+=e.val*n.val,e=e.next,n=n.next);return i},t.Vector.prototype.similarity=function(t){return this.dot(t)/(this.magnitude()*t.magnitude())},t.SortedSet=function(){this.length=0,this.elements=[]},t.SortedSet.load=function(t){var e=new this;return e.elements=t,e.length=t.length,e},t.SortedSet.prototype.add=function(){var t,e;for(t=0;t<arguments.length;t++)e=arguments[t],~this.indexOf(e)||this.elements.splice(this.locationFor(e),0,e);this.length=this.elements.length},t.SortedSet.prototype.toArray=function(){return this.elements.slice()},t.SortedSet.prototype.map=function(t,e){return this.elements.map(t,e)},t.SortedSet.prototype.forEach=function(t,e){return this.elements.forEach(t,e)},t.SortedSet.prototype.indexOf=function(t){for(var e=0,n=this.elements.length,i=n-e,r=e+Math.floor(i/2),o=this.elements[r];i>1;){if(o===t)return r;t>o&&(e=r),o>t&&(n=r),i=n-e,r=e+Math.floor(i/2),o=this.elements[r]}return o===t?r:-1},t.SortedSet.prototype.locationFor=function(t){for(var e=0,n=this.elements.length,i=n-e,r=e+Math.floor(i/2),o=this.elements[r];i>1;)t>o&&(e=r),o>t&&(n=r),i=n-e,r=e+Math.floor(i/2),o=this.elements[r];return o>t?r:t>o?r+1:void 0},t.SortedSet.prototype.intersect=function(e){for(var n=new t.SortedSet,i=0,r=0,o=this.length,s=e.length,a=this.elements,h=e.elements;;){if(i>o-1||r>s-1)break;a[i]!==h[r]?a[i]<h[r]?i++:a[i]>h[r]&&r++:(n.add(a[i]),i++,r++)}return n},t.SortedSet.prototype.clone=function(){var e=new t.SortedSet;return e.elements=this.toArray(),e.length=e.elements.length,e},t.SortedSet.prototype.union=function(t){var e,n,i;this.length>=t.length?(e=this,n=t):(e=t,n=this),i=e.clone();for(var r=0,o=n.toArray();r<o.length;r++)i.add(o[r]);return i},t.SortedSet.prototype.toJSON=function(){return this.toArray()},t.Index=function(){this._fields=[],this._ref="id",this.pipeline=new t.Pipeline,this.documentStore=new t.Store,this.tokenStore=new t.TokenStore,this.corpusTokens=new t.SortedSet,this.eventEmitter=new t.EventEmitter,this.tokenizerFn=t.tokenizer,this._idfCache={},this.on("add","remove","update",function(){this._idfCache={}}.bind(this))},t.Index.prototype.on=function(){var t=Array.prototype.slice.call(arguments);return this.eventEmitter.addListener.apply(this.eventEmitter,t)},t.Index.prototype.off=function(t,e){return this.eventEmitter.removeListener(t,e)},t.Index.load=function(e){e.version!==t.version&&t.utils.warn("version mismatch: current "+t.version+" importing "+e.version);var n=new this;return n._fields=e.fields,n._ref=e.ref,n.tokenizer=t.tokenizer.load(e.tokenizer),n.documentStore=t.Store.load(e.documentStore),n.tokenStore=t.TokenStore.load(e.tokenStore),n.corpusTokens=t.SortedSet.load(e.corpusTokens),n.pipeline=t.Pipeline.load(e.pipeline),n},t.Index.prototype.field=function(t,e){var e=e||{},n={name:t,boost:e.boost||1};return this._fields.push(n),this},t.Index.prototype.ref=function(t){return this._ref=t,this},t.Index.prototype.tokenizer=function(e){var n=e.label&&e.label in t.tokenizer.registeredFunctions;return n||t.utils.warn("Function is not a registered tokenizer. This may cause problems when serialising the index"),this.tokenizerFn=e,this},t.Index.prototype.add=function(e,n){var i={},r=new t.SortedSet,o=e[this._ref],n=void 0===n?!0:n;this._fields.forEach(function(t){var n=this.pipeline.run(this.tokenizerFn(e[t.name]));i[t.name]=n;for(var o=0;o<n.length;o++){var s=n[o];r.add(s),this.corpusTokens.add(s)}},this),this.documentStore.set(o,r);for(var s=0;s<r.length;s++){for(var a=r.elements[s],h=0,u=0;u<this._fields.length;u++){var l=this._fields[u],c=i[l.name],f=c.length;if(f){for(var d=0,p=0;f>p;p++)c[p]===a&&d++;h+=d/f*l.boost}}this.tokenStore.add(a,{ref:o,tf:h})}n&&this.eventEmitter.emit("add",e,this)},t.Index.prototype.remove=function(t,e){var n=t[this._ref],e=void 0===e?!0:e;if(this.documentStore.has(n)){var i=this.documentStore.get(n);this.documentStore.remove(n),i.forEach(function(t){this.tokenStore.remove(t,n)},this),e&&this.eventEmitter.emit("remove",t,this)}},t.Index.prototype.update=function(t,e){var e=void 0===e?!0:e;this.remove(t,!1),this.add(t,!1),e&&this.eventEmitter.emit("update",t,this)},t.Index.prototype.idf=function(t){var e="@"+t;if(Object.prototype.hasOwnProperty.call(this._idfCache,e))return this._idfCache[e];var n=this.tokenStore.count(t),i=1;return n>0&&(i=1+Math.log(this.documentStore.length/n)),this._idfCache[e]=i},t.Index.prototype.search=function(e){var n=this.pipeline.run(this.tokenizerFn(e)),i=new t.Vector,r=[],o=this._fields.reduce(function(t,e){return t+e.boost},0),s=n.some(function(t){return this.tokenStore.has(t)},this);if(!s)return[];n.forEach(function(e,n,s){var a=1/s.length*this._fields.length*o,h=this,u=this.tokenStore.expand(e).reduce(function(n,r){var o=h.corpusTokens.indexOf(r),s=h.idf(r),u=1,l=new t.SortedSet;if(r!==e){var c=Math.max(3,r.length-e.length);u=1/Math.log(c)}o>-1&&i.insert(o,a*s*u);for(var f=h.tokenStore.get(r),d=Object.keys(f),p=d.length,v=0;p>v;v++)l.add(f[d[v]].ref);return n.union(l)},new t.SortedSet);r.push(u)},this);var a=r.reduce(function(t,e){return t.intersect(e)});return a.map(function(t){return{ref:t,score:i.similarity(this.documentVector(t))}},this).sort(function(t,e){return e.score-t.score})},t.Index.prototype.documentVector=function(e){for(var n=this.documentStore.get(e),i=n.length,r=new t.Vector,o=0;i>o;o++){var s=n.elements[o],a=this.tokenStore.get(s)[e].tf,h=this.idf(s);r.insert(this.corpusTokens.indexOf(s),a*h)}return r},t.Index.prototype.toJSON=function(){return{version:t.version,fields:this._fields,ref:this._ref,tokenizer:this.tokenizerFn.label,documentStore:this.documentStore.toJSON(),tokenStore:this.tokenStore.toJSON(),corpusTokens:this.corpusTokens.toJSON(),pipeline:this.pipeline.toJSON()}},t.Index.prototype.use=function(t){var e=Array.prototype.slice.call(arguments,1);e.unshift(this),t.apply(this,e)},t.Store=function(){this.store={},this.length=0},t.Store.load=function(e){var n=new this;return n.length=e.length,n.store=Object.keys(e.store).reduce(function(n,i){return n[i]=t.SortedSet.load(e.store[i]),n},{}),n},t.Store.prototype.set=function(t,e){this.has(t)||this.length++,this.store[t]=e},t.Store.prototype.get=function(t){return this.store[t]},t.Store.prototype.has=function(t){return t in this.store},t.Store.prototype.remove=function(t){this.has(t)&&(delete this.store[t],this.length--)},t.Store.prototype.toJSON=function(){return{store:this.store,length:this.length}},t.stemmer=function(){var t={ational:"ate",tional:"tion",enci:"ence",anci:"ance",izer:"ize",bli:"ble",alli:"al",entli:"ent",eli:"e",ousli:"ous",ization:"ize",ation:"ate",ator:"ate",alism:"al",iveness:"ive",fulness:"ful",ousness:"ous",aliti:"al",iviti:"ive",biliti:"ble",logi:"log"},e={icate:"ic",ative:"",alize:"al",iciti:"ic",ical:"ic",ful:"",ness:""},n="[^aeiou]",i="[aeiouy]",r=n+"[^aeiouy]*",o=i+"[aeiou]*",s="^("+r+")?"+o+r,a="^("+r+")?"+o+r+"("+o+")?$",h="^("+r+")?"+o+r+o+r,u="^("+r+")?"+i,l=new RegExp(s),c=new RegExp(h),f=new RegExp(a),d=new RegExp(u),p=/^(.+?)(ss|i)es$/,v=/^(.+?)([^s])s$/,g=/^(.+?)eed$/,m=/^(.+?)(ed|ing)$/,y=/.$/,S=/(at|bl|iz)$/,w=new RegExp("([^aeiouylsz])\\1$"),k=new RegExp("^"+r+i+"[^aeiouwxy]$"),x=/^(.+?[^aeiou])y$/,b=/^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/,E=/^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/,F=/^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/,_=/^(.+?)(s|t)(ion)$/,z=/^(.+?)e$/,O=/ll$/,P=new RegExp("^"+r+i+"[^aeiouwxy]$"),T=function(n){var i,r,o,s,a,h,u;if(n.length<3)return n;if(o=n.substr(0,1),"y"==o&&(n=o.toUpperCase()+n.substr(1)),s=p,a=v,s.test(n)?n=n.replace(s,"$1$2"):a.test(n)&&(n=n.replace(a,"$1$2")),s=g,a=m,s.test(n)){var T=s.exec(n);s=l,s.test(T[1])&&(s=y,n=n.replace(s,""))}else if(a.test(n)){var T=a.exec(n);i=T[1],a=d,a.test(i)&&(n=i,a=S,h=w,u=k,a.test(n)?n+="e":h.test(n)?(s=y,n=n.replace(s,"")):u.test(n)&&(n+="e"))}if(s=x,s.test(n)){var T=s.exec(n);i=T[1],n=i+"i"}if(s=b,s.test(n)){var T=s.exec(n);i=T[1],r=T[2],s=l,s.test(i)&&(n=i+t[r])}if(s=E,s.test(n)){var T=s.exec(n);i=T[1],r=T[2],s=l,s.test(i)&&(n=i+e[r])}if(s=F,a=_,s.test(n)){var T=s.exec(n);i=T[1],s=c,s.test(i)&&(n=i)}else if(a.test(n)){var T=a.exec(n);i=T[1]+T[2],a=c,a.test(i)&&(n=i)}if(s=z,s.test(n)){var T=s.exec(n);i=T[1],s=c,a=f,h=P,(s.test(i)||a.test(i)&&!h.test(i))&&(n=i)}return s=O,a=c,s.test(n)&&a.test(n)&&(s=y,n=n.replace(s,"")),"y"==o&&(n=o.toLowerCase()+n.substr(1)),n};return T}(),t.Pipeline.registerFunction(t.stemmer,"stemmer"),t.generateStopWordFilter=function(t){var e=t.reduce(function(t,e){return t[e]=e,t},{});return function(t){return t&&e[t]!==t?t:void 0}},t.stopWordFilter=t.generateStopWordFilter(["a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your"]),t.Pipeline.registerFunction(t.stopWordFilter,"stopWordFilter"),t.trimmer=function(t){return t.replace(/^\W+/,"").replace(/\W+$/,"")},t.Pipeline.registerFunction(t.trimmer,"trimmer"),t.TokenStore=function(){this.root={docs:{}},this.length=0},t.TokenStore.load=function(t){var e=new this;return e.root=t.root,e.length=t.length,e},t.TokenStore.prototype.add=function(t,e,n){var n=n||this.root,i=t.charAt(0),r=t.slice(1);return i in n||(n[i]={docs:{}}),0===r.length?(n[i].docs[e.ref]=e,void(this.length+=1)):this.add(r,e,n[i])},t.TokenStore.prototype.has=function(t){if(!t)return!1;for(var e=this.root,n=0;n<t.length;n++){if(!e[t.charAt(n)])return!1;e=e[t.charAt(n)]}return!0},t.TokenStore.prototype.getNode=function(t){if(!t)return{};for(var e=this.root,n=0;n<t.length;n++){if(!e[t.charAt(n)])return{};e=e[t.charAt(n)]}return e},t.TokenStore.prototype.get=function(t,e){return this.getNode(t,e).docs||{}},t.TokenStore.prototype.count=function(t,e){return Object.keys(this.get(t,e)).length},t.TokenStore.prototype.remove=function(t,e){if(t){for(var n=this.root,i=0;i<t.length;i++){if(!(t.charAt(i)in n))return;n=n[t.charAt(i)]}delete n.docs[e]}},t.TokenStore.prototype.expand=function(t,e){var n=this.getNode(t),i=n.docs||{},e=e||[];return Object.keys(i).length&&e.push(t),Object.keys(n).forEach(function(n){"docs"!==n&&e.concat(this.expand(t+n,e))},this),e},t.TokenStore.prototype.toJSON=function(){return{root:this.root,length:this.length}},function(t,e){"function"==typeof define&&define.amd?define(e):"object"==typeof exports?module.exports=e():t.lunr=e()}(this,function(){return t})}();
diff --git a/search/main.js b/search/main.js
new file mode 100755
index 0000000..0a82ab5
--- /dev/null
+++ b/search/main.js
@@ -0,0 +1,96 @@
+function getSearchTermFromLocation() {
+  var sPageURL = window.location.search.substring(1);
+  var sURLVariables = sPageURL.split('&');
+  for (var i = 0; i < sURLVariables.length; i++) {
+    var sParameterName = sURLVariables[i].split('=');
+    if (sParameterName[0] == 'q') {
+      return decodeURIComponent(sParameterName[1].replace(/\+/g, '%20'));
+    }
+  }
+}
+
+function joinUrl (base, path) {
+  if (path.substring(0, 1) === "/") {
+    // path starts with `/`. Thus it is absolute.
+    return path;
+  }
+  if (base.substring(base.length-1) === "/") {
+    // base ends with `/`
+    return base + path;
+  }
+  return base + "/" + path;
+}
+
+function formatResult (location, title, summary) {
+  return '<article><h3><a href="' + joinUrl(base_url, location) + '">'+ title + '</a></h3><p>' + summary +'</p></article>';
+}
+
+function displayResults (results) {
+  var search_results = document.getElementById("mkdocs-search-results");
+  while (search_results.firstChild) {
+    search_results.removeChild(search_results.firstChild);
+  }
+  if (results.length > 0){
+    for (var i=0; i < results.length; i++){
+      var result = results[i];
+      var html = formatResult(result.location, result.title, result.summary);
+      search_results.insertAdjacentHTML('beforeend', html);
+    }
+  } else {
+    search_results.insertAdjacentHTML('beforeend', "<p>No results found</p>");
+  }
+}
+
+function doSearch () {
+  var query = document.getElementById('mkdocs-search-query').value;
+  if (query.length > 2) {
+    if (!window.Worker) {
+      displayResults(search(query));
+    } else {
+      searchWorker.postMessage({query: query});
+    }
+  } else {
+    // Clear results for short queries
+    displayResults([]);
+  }
+}
+
+function initSearch () {
+  var search_input = document.getElementById('mkdocs-search-query');
+  if (search_input) {
+    search_input.addEventListener("keyup", doSearch);
+  }
+  var term = getSearchTermFromLocation();
+  if (term) {
+    search_input.value = term;
+    doSearch();
+  }
+}
+
+function onWorkerMessage (e) {
+  if (e.data.allowSearch) {
+    initSearch();
+  } else if (e.data.results) {
+    var results = e.data.results;
+    displayResults(results);
+  }
+}
+
+if (!window.Worker) {
+  console.log('Web Worker API not supported');
+  // load index in main thread
+  $.getScript(joinUrl(base_url, "search/worker.js")).done(function () {
+    console.log('Loaded worker');
+    init();
+    window.postMessage = function (msg) {
+      onWorkerMessage({data: msg});
+    };
+  }).fail(function (jqxhr, settings, exception) {
+    console.error('Could not load worker.js');
+  });
+} else {
+  // Wrap search in a web worker
+  var searchWorker = new Worker(joinUrl(base_url, "search/worker.js"));
+  searchWorker.postMessage({init: true});
+  searchWorker.onmessage = onWorkerMessage;
+}
diff --git a/search/mustache.min.js b/search/mustache.min.js
deleted file mode 100755
index 7fc6da8..0000000
--- a/search/mustache.min.js
+++ /dev/null
@@ -1 +0,0 @@
-(function(global,factory){if(typeof exports==="object"&&exports){factory(exports)}else if(typeof define==="function"&&define.amd){define(["exports"],factory)}else{factory(global.Mustache={})}})(this,function(mustache){var Object_toString=Object.prototype.toString;var isArray=Array.isArray||function(object){return Object_toString.call(object)==="[object Array]"};function isFunction(object){return typeof object==="function"}function escapeRegExp(string){return string.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g,"\\$&")}var RegExp_test=RegExp.prototype.test;function testRegExp(re,string){return RegExp_test.call(re,string)}var nonSpaceRe=/\S/;function isWhitespace(string){return!testRegExp(nonSpaceRe,string)}var entityMap={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","/":"&#x2F;"};function escapeHtml(string){return String(string).replace(/[&<>"'\/]/g,function(s){return entityMap[s]})}var whiteRe=/\s*/;var spaceRe=/\s+/;var equalsRe=/\s*=/;var curlyRe=/\s*\}/;var 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diff --git a/search/require.js b/search/require.js
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index 8638a31..0000000
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diff --git a/search/search-results-template.mustache b/search/search-results-template.mustache
deleted file mode 100755
index a8b3862..0000000
--- a/search/search-results-template.mustache
+++ /dev/null
@@ -1,4 +0,0 @@
-<article>
-  <h3><a href="{{location}}">{{title}}</a></h3>
-  <p>{{summary}}</p>
-</article>
diff --git a/search/search.js b/search/search.js
deleted file mode 100755
index 2283930..0000000
--- a/search/search.js
+++ /dev/null
@@ -1,92 +0,0 @@
-require.config({
-   baseUrl: base_url + "/search/"
-});
-
-require([
-    'mustache.min',
-    'lunr.min',
-    'text!search-results-template.mustache',
-    'text!search_index.json',
-], function (Mustache, lunr, results_template, data) {
-   "use strict";
-
-    function getSearchTerm()
-    {
-        var sPageURL = window.location.search.substring(1);
-        var sURLVariables = sPageURL.split('&');
-        for (var i = 0; i < sURLVariables.length; i++)
-        {
-            var sParameterName = sURLVariables[i].split('=');
-            if (sParameterName[0] == 'q')
-            {
-                return decodeURIComponent(sParameterName[1].replace(/\+/g, '%20'));
-            }
-        }
-    }
-
-    var index = lunr(function () {
-        this.field('title', {boost: 10});
-        this.field('text');
-        this.ref('location');
-    });
-
-    data = JSON.parse(data);
-    var documents = {};
-
-    for (var i=0; i < data.docs.length; i++){
-        var doc = data.docs[i];
-        doc.location = base_url + doc.location;
-        index.add(doc);
-        documents[doc.location] = doc;
-    }
-
-    var search = function(){
-
-        var query = document.getElementById('mkdocs-search-query').value;
-        var search_results = document.getElementById("mkdocs-search-results");
-        while (search_results.firstChild) {
-            search_results.removeChild(search_results.firstChild);
-        }
-
-        if(query === ''){
-            return;
-        }
-
-        var results = index.search(query);
-
-        if (results.length > 0){
-            for (var i=0; i < results.length; i++){
-                var result = results[i];
-                doc = documents[result.ref];
-                doc.base_url = base_url;
-                doc.summary = doc.text.substring(0, 200);
-                var html = Mustache.to_html(results_template, doc);
-                search_results.insertAdjacentHTML('beforeend', html);
-            }
-        } else {
-            search_results.insertAdjacentHTML('beforeend', "<p>No results found</p>");
-        }
-
-        if(jQuery){
-            /*
-             * We currently only automatically hide bootstrap models. This
-             * requires jQuery to work.
-             */
-            jQuery('#mkdocs_search_modal a').click(function(){
-                jQuery('#mkdocs_search_modal').modal('hide');
-            });
-        }
-
-    };
-
-    var search_input = document.getElementById('mkdocs-search-query');
-
-    var term = getSearchTerm();
-    if (term){
-        search_input.value = term;
-        search();
-    }
-
-    if (search_input){search_input.addEventListener("keyup", search);}
-
-});
diff --git a/search/search_index.json b/search/search_index.json
index c88f406..55dd6cf 100755
--- a/search/search_index.json
+++ b/search/search_index.json
@@ -1,624 +1 @@
-{
-    "docs": [
-        {
-            "location": "/",
-            "text": "About GraphQL\n\n\nGraphQL is a modern way to build HTTP APIs consumed by the web and mobile clients.\nIt is intended to be a replacement for REST and SOAP APIs (even for \nexisting applications\n).\n\n\nGraphQL itself is a \nspecification\n designed by Facebook\nengineers. Various implementations of this specification were written \n\nin different languages and environments\n.\n\n\nGreat overview of GraphQL features and benefits is presented on \nthe official website\n. \nAll of them equally apply to this PHP implementation. \n\n\nAbout graphql-php\n\n\ngraphql-php\n is a feature-complete implementation of GraphQL specification in PHP (5.5+, 7.0+). \nIt was originally inspired by \nreference JavaScript implementation\n \npublished by Facebook.\n\n\nThis library is a thin wrapper around your existing data layer and business logic. \nIt doesn't dictate how these layers are implemented or which storage engines \nare used. Instead, it provides tools for creating rich API for your existing app.\n\n\nLibrary features include:\n\n\n\n\nPrimitives to express your app as a \nType System\n\n\nValidation and introspection of this Type System (for compatibility with tools like \nGraphiQL\n)\n\n\nParsing, validating and \nexecuting GraphQL queries\n against this Type System\n\n\nRich \nerror reporting\n, including query validation and execution errors\n\n\nOptional tools for \nparsing GraphQL Type language\n\n\nTools for \nbatching requests\n to backend storage\n\n\nAsync PHP platforms support\n via promises\n\n\nStandard HTTP server\n\n\n\n\nAlso, several \ncomplementary tools\n are available which provide integrations with \nexisting PHP frameworks, add support for Relay, etc.\n\n\nCurrent Status\n\n\nThe first version of this library (v0.1) was released on August 10th 2015.\n\n\nThe current version (v0.10) supports all features described by GraphQL specification \n(including April 2016 add-ons) as well as some experimental features like \n\nSchema Language parser\n and \n\nSchema printer\n.\n\n\nReady for real-world usage. \n\n\nGitHub\n\n\nProject source code is \nhosted on GitHub\n.",
-            "title": "About"
-        },
-        {
-            "location": "/#about-graphql",
-            "text": "GraphQL is a modern way to build HTTP APIs consumed by the web and mobile clients.\nIt is intended to be a replacement for REST and SOAP APIs (even for  existing applications ).  GraphQL itself is a  specification  designed by Facebook\nengineers. Various implementations of this specification were written  in different languages and environments .  Great overview of GraphQL features and benefits is presented on  the official website . \nAll of them equally apply to this PHP implementation.",
-            "title": "About GraphQL"
-        },
-        {
-            "location": "/#about-graphql-php",
-            "text": "graphql-php  is a feature-complete implementation of GraphQL specification in PHP (5.5+, 7.0+). \nIt was originally inspired by  reference JavaScript implementation  \npublished by Facebook.  This library is a thin wrapper around your existing data layer and business logic. \nIt doesn't dictate how these layers are implemented or which storage engines \nare used. Instead, it provides tools for creating rich API for your existing app.  Library features include:   Primitives to express your app as a  Type System  Validation and introspection of this Type System (for compatibility with tools like  GraphiQL )  Parsing, validating and  executing GraphQL queries  against this Type System  Rich  error reporting , including query validation and execution errors  Optional tools for  parsing GraphQL Type language  Tools for  batching requests  to backend storage  Async PHP platforms support  via promises  Standard HTTP server   Also, several  complementary tools  are available which provide integrations with \nexisting PHP frameworks, add support for Relay, etc.",
-            "title": "About graphql-php"
-        },
-        {
-            "location": "/#current-status",
-            "text": "The first version of this library (v0.1) was released on August 10th 2015.  The current version (v0.10) supports all features described by GraphQL specification \n(including April 2016 add-ons) as well as some experimental features like  Schema Language parser  and  Schema printer .  Ready for real-world usage.",
-            "title": "Current Status"
-        },
-        {
-            "location": "/#github",
-            "text": "Project source code is  hosted on GitHub .",
-            "title": "GitHub"
-        },
-        {
-            "location": "/getting-started/",
-            "text": "Prerequisites\n\n\nThis documentation assumes your familiarity with GraphQL concepts. If it is not the case - \nfirst learn about GraphQL on \nthe official website\n.\n\n\nInstallation\n\n\nUsing \ncomposer\n, simply run:\n\n\ncomposer require webonyx/graphql-php\n\n\n\n\nUpgrading\n\n\nWe try to keep library releases backwards compatible. But when breaking changes are inevitable \nthey are explained in \nupgrade instructions\n.\n\n\nInstall Tools (optional)\n\n\nWhile it is possible to communicate with GraphQL API using regular HTTP tools it is way \nmore convenient for humans to use \nGraphiQL\n - an in-browser \nIDE for exploring GraphQL APIs.\n\n\nIt provides syntax-highlighting, auto-completion and auto-generated documentation for \nGraphQL API.\n\n\nThe easiest way to use it is to install one of the existing Google Chrome extensions:\n\n\n\n\nChromeiQL\n\n\nGraphiQL Feen\n\n\n\n\nAlternatively, you can follow instructions on \nthe GraphiQL\n\npage and install it locally.\n\n\nHello World\n\n\nLet's create a type system that will be capable to process following simple query:\n\n\nquery {\n  echo(message: \"Hello World\")\n}\n\n\n\n\nTo do so we need an object type with field \necho\n:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'echo' => [\n            'type' => Type::string(),\n            'args' => [\n                'message' => Type::nonNull(Type::string()),\n            ],\n            'resolve' => function ($root, $args) {\n                return $root['prefix'] . $args['message'];\n            }\n        ],\n    ],\n]);\n\n\n\n\n\n(Note: type definition can be expressed in \ndifferent styles\n, \nbut this example uses \ninline\n style for simplicity)\n\n\nThe interesting piece here is \nresolve\n option of field definition. It is responsible for returning \na value of our field. Values of \nscalar\n fields will be directly included in response while values of \n\ncomposite\n fields (objects, interfaces, unions) will be passed down to nested field resolvers \n(not in this example though).\n\n\nNow when our type is ready, let's create GraphQL endpoint file for it \ngraphql.php\n:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Type\\Schema;\n\n$schema = new Schema([\n    'query' => $queryType\n]);\n\n$rawInput = file_get_contents('php://input');\n$input = json_decode($rawInput, true);\n$query = $input['query'];\n$variableValues = isset($input['variables']) ? $input['variables'] : null;\n\ntry {\n    $rootValue = ['prefix' => 'You said: '];\n    $result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues);\n    $output = $result->toArray();\n} catch (\\Exception $e) {\n    $output = [\n        'errors' => [\n            [\n                'message' => $e->getMessage()\n            ]\n        ]\n    ];\n}\nheader('Content-Type: application/json');\necho json_encode($output);\n\n\n\n\nOur example is finished. Try it by running:\n\n\nphp -S localhost:8080 graphql.php\ncurl http://localhost:8080 -d '{\"query\": \"query { echo(message: \\\"Hello World\\\") }\" }'\n\n\n\n\nCheck out the full \nsource code\n of this example\nwhich also includes simple mutation.\n\n\nObviously hello world only scratches the surface of what is possible. \nSo check out next example, which is closer to real-world apps.\nOr keep reading about \nschema definition\n.\n\n\nBlog example\n\n\nIt is often easier to start with a full-featured example and then get back to documentation\nfor your own work. \n\n\nCheck out \nBlog example of GraphQL API\n.\nIt is quite close to real-world GraphQL hierarchies. Follow instructions and try it yourself in ~10 minutes.",
-            "title": "Getting Started"
-        },
-        {
-            "location": "/getting-started/#prerequisites",
-            "text": "This documentation assumes your familiarity with GraphQL concepts. If it is not the case - \nfirst learn about GraphQL on  the official website .",
-            "title": "Prerequisites"
-        },
-        {
-            "location": "/getting-started/#installation",
-            "text": "Using  composer , simply run:  composer require webonyx/graphql-php",
-            "title": "Installation"
-        },
-        {
-            "location": "/getting-started/#upgrading",
-            "text": "We try to keep library releases backwards compatible. But when breaking changes are inevitable \nthey are explained in  upgrade instructions .",
-            "title": "Upgrading"
-        },
-        {
-            "location": "/getting-started/#install-tools-optional",
-            "text": "While it is possible to communicate with GraphQL API using regular HTTP tools it is way \nmore convenient for humans to use  GraphiQL  - an in-browser \nIDE for exploring GraphQL APIs.  It provides syntax-highlighting, auto-completion and auto-generated documentation for \nGraphQL API.  The easiest way to use it is to install one of the existing Google Chrome extensions:   ChromeiQL  GraphiQL Feen   Alternatively, you can follow instructions on  the GraphiQL \npage and install it locally.",
-            "title": "Install Tools (optional)"
-        },
-        {
-            "location": "/getting-started/#hello-world",
-            "text": "Let's create a type system that will be capable to process following simple query:  query {\n  echo(message: \"Hello World\")\n}  To do so we need an object type with field  echo :  <?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'echo' => [\n            'type' => Type::string(),\n            'args' => [\n                'message' => Type::nonNull(Type::string()),\n            ],\n            'resolve' => function ($root, $args) {\n                return $root['prefix'] . $args['message'];\n            }\n        ],\n    ],\n]);  (Note: type definition can be expressed in  different styles , \nbut this example uses  inline  style for simplicity)  The interesting piece here is  resolve  option of field definition. It is responsible for returning \na value of our field. Values of  scalar  fields will be directly included in response while values of  composite  fields (objects, interfaces, unions) will be passed down to nested field resolvers \n(not in this example though).  Now when our type is ready, let's create GraphQL endpoint file for it  graphql.php :  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Type\\Schema;\n\n$schema = new Schema([\n    'query' => $queryType\n]);\n\n$rawInput = file_get_contents('php://input');\n$input = json_decode($rawInput, true);\n$query = $input['query'];\n$variableValues = isset($input['variables']) ? $input['variables'] : null;\n\ntry {\n    $rootValue = ['prefix' => 'You said: '];\n    $result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues);\n    $output = $result->toArray();\n} catch (\\Exception $e) {\n    $output = [\n        'errors' => [\n            [\n                'message' => $e->getMessage()\n            ]\n        ]\n    ];\n}\nheader('Content-Type: application/json');\necho json_encode($output);  Our example is finished. Try it by running:  php -S localhost:8080 graphql.php\ncurl http://localhost:8080 -d '{\"query\": \"query { echo(message: \\\"Hello World\\\") }\" }'  Check out the full  source code  of this example\nwhich also includes simple mutation.  Obviously hello world only scratches the surface of what is possible. \nSo check out next example, which is closer to real-world apps.\nOr keep reading about  schema definition .",
-            "title": "Hello World"
-        },
-        {
-            "location": "/getting-started/#blog-example",
-            "text": "It is often easier to start with a full-featured example and then get back to documentation\nfor your own work.   Check out  Blog example of GraphQL API .\nIt is quite close to real-world GraphQL hierarchies. Follow instructions and try it yourself in ~10 minutes.",
-            "title": "Blog example"
-        },
-        {
-            "location": "/complementary-tools/",
-            "text": "Integrations\n\n\n\n\nIntegration with Relay\n\n\nIntegration with Laravel 5\n + \nRelay Helpers for Laravel\n + \nNuwave Lighthouse\n\n\nSymfony Bundle\n by Overblog\n\n\nOut of the box integration with any PSR-7 compatible framework (like \nSlim\n or \nZend Expressive\n) via \nStandard Server\n\n\n\n\nGraphQL PHP Tools\n\n\n\n\nDefine types with Doctrine ORM annotations (\nfor PHP7.1\n, for \nearlier PHP versions\n)\n\n\nDataLoader PHP\n - as a ready implementation for \ndeferred resolvers\n\n\nPSR 15 compliant middleware\n for the Standard Server (experimental)\n\n\nGraphQL Uploads\n for the Standard Server\n\n\nGraphQL Batch Processor\n - Simple library that provides a builder interface for defining collection, querying, filtering, and post-processing logic of batched data fetches. \n\n\n\n\nGeneral GraphQL Tools\n\n\n\n\nGraphiQL\n - An in-browser IDE for exploring GraphQL\n\n\nChromeiQL\n\n  or \nGraphiQL Feen\n -\n  GraphiQL as Google Chrome extension",
-            "title": "Complementary Tools"
-        },
-        {
-            "location": "/complementary-tools/#integrations",
-            "text": "Integration with Relay  Integration with Laravel 5  +  Relay Helpers for Laravel  +  Nuwave Lighthouse  Symfony Bundle  by Overblog  Out of the box integration with any PSR-7 compatible framework (like  Slim  or  Zend Expressive ) via  Standard Server",
-            "title": "Integrations"
-        },
-        {
-            "location": "/complementary-tools/#graphql-php-tools",
-            "text": "Define types with Doctrine ORM annotations ( for PHP7.1 , for  earlier PHP versions )  DataLoader PHP  - as a ready implementation for  deferred resolvers  PSR 15 compliant middleware  for the Standard Server (experimental)  GraphQL Uploads  for the Standard Server  GraphQL Batch Processor  - Simple library that provides a builder interface for defining collection, querying, filtering, and post-processing logic of batched data fetches.",
-            "title": "GraphQL PHP Tools"
-        },
-        {
-            "location": "/complementary-tools/#general-graphql-tools",
-            "text": "GraphiQL  - An in-browser IDE for exploring GraphQL  ChromeiQL \n  or  GraphiQL Feen  -\n  GraphiQL as Google Chrome extension",
-            "title": "General GraphQL Tools"
-        },
-        {
-            "location": "/type-system/",
-            "text": "Type System\n\n\nTo start using GraphQL you are expected to implement a type hierarchy and expose it as \nSchema\n. \n\n\nIn graphql-php \ntype\n is an instance of internal class from \n\nGraphQL\\Type\\Definition\n namespace: \nObjectType\n, \n\nInterfaceType\n, \nUnionType\n, \nInputObjectType\n, \n\nScalarType\n, \nEnumType\n (or one of subclasses).\n\n\nBut most of the types in your schema will be \nobject types\n.\n\n\nType Definition Styles\n\n\nSeveral styles of type definitions are supported depending on your preferences.\n\n\nInline definitions:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$myType = new ObjectType([\n    'name' => 'MyType',\n    'fields' => [\n        'id' => Type::id()\n    ]\n]);\n\n\n\n\nClass per type:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\nclass MyType extends ObjectType\n{\n    public function __construct()\n    {\n        $config = [\n            // Note: 'name' is not needed in this form:\n            // it will be inferred from class name by omitting namespace and dropping \"Type\" suffix\n            'fields' => [\n                'id' => Type::id()\n            ]\n        ];\n        parent::__construct($config);\n    }\n}\n\n\n\n\nUsing \nGraphQL Type language\n:\n\n\nschema {\n    query: Query\n    mutation: Mutation\n}\n\ntype Query {\n    greetings(input: HelloInput!): String!\n}\n\ninput HelloInput {\n    firstName: String!\n    lastName: String\n}\n\n\n\n\nRead more about type language definitions in a \ndedicated docs section\n.\n\n\nType Registry\n\n\nEvery type must be presented in Schema by a single instance (\ngraphql-php\n \nthrows when it discovers several instances with the same \nname\n in the schema).\n\n\nTherefore if you define your type as separate PHP class you must ensure that only one \ninstance of that class is added to the schema.\n\n\nThe typical way to do this is to create a registry of your types:\n\n\n<?php\nnamespace MyApp;\n\nclass TypeRegistry\n{\n    private $myAType;\n    private $myBType;\n\n    public function myAType()\n    {\n        return $this->myAType ?: ($this->myAType = new MyAType($this));\n    }\n\n    public function myBType()\n    {\n        return $this->myBType ?: ($this->myBType = new MyBType($this));\n    }\n}\n\n\n\n\nAnd use this registry in type definition:\n\n\n<?php\nnamespace MyApp;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\nclass MyAType extends ObjectType\n{\n    public function __construct(TypeRegistry $types) \n    {\n        parent::__construct([\n            'fields' => [\n                'b' => $types->myBType()                \n            ]\n        ]);\n    }\n}\n\n\n\n\nObviously, you can automate this registry as you wish to reduce boilerplate or even \nintroduce Dependency Injection Container if your types have other dependencies.\n\n\nAlternatively, all methods of the registry could be static - then there is no need\nto pass it in constructor - instead just use use \nTypeRegistry::myAType()\n in your \ntype definitions.",
-            "title": "Introduction"
-        },
-        {
-            "location": "/type-system/#type-system",
-            "text": "To start using GraphQL you are expected to implement a type hierarchy and expose it as  Schema .   In graphql-php  type  is an instance of internal class from  GraphQL\\Type\\Definition  namespace:  ObjectType ,  InterfaceType ,  UnionType ,  InputObjectType ,  ScalarType ,  EnumType  (or one of subclasses).  But most of the types in your schema will be  object types .",
-            "title": "Type System"
-        },
-        {
-            "location": "/type-system/#type-definition-styles",
-            "text": "Several styles of type definitions are supported depending on your preferences.  Inline definitions:  <?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$myType = new ObjectType([\n    'name' => 'MyType',\n    'fields' => [\n        'id' => Type::id()\n    ]\n]);  Class per type:  <?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\nclass MyType extends ObjectType\n{\n    public function __construct()\n    {\n        $config = [\n            // Note: 'name' is not needed in this form:\n            // it will be inferred from class name by omitting namespace and dropping \"Type\" suffix\n            'fields' => [\n                'id' => Type::id()\n            ]\n        ];\n        parent::__construct($config);\n    }\n}  Using  GraphQL Type language :  schema {\n    query: Query\n    mutation: Mutation\n}\n\ntype Query {\n    greetings(input: HelloInput!): String!\n}\n\ninput HelloInput {\n    firstName: String!\n    lastName: String\n}  Read more about type language definitions in a  dedicated docs section .",
-            "title": "Type Definition Styles"
-        },
-        {
-            "location": "/type-system/#type-registry",
-            "text": "Every type must be presented in Schema by a single instance ( graphql-php  \nthrows when it discovers several instances with the same  name  in the schema).  Therefore if you define your type as separate PHP class you must ensure that only one \ninstance of that class is added to the schema.  The typical way to do this is to create a registry of your types:  <?php\nnamespace MyApp;\n\nclass TypeRegistry\n{\n    private $myAType;\n    private $myBType;\n\n    public function myAType()\n    {\n        return $this->myAType ?: ($this->myAType = new MyAType($this));\n    }\n\n    public function myBType()\n    {\n        return $this->myBType ?: ($this->myBType = new MyBType($this));\n    }\n}  And use this registry in type definition:  <?php\nnamespace MyApp;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\nclass MyAType extends ObjectType\n{\n    public function __construct(TypeRegistry $types) \n    {\n        parent::__construct([\n            'fields' => [\n                'b' => $types->myBType()                \n            ]\n        ]);\n    }\n}  Obviously, you can automate this registry as you wish to reduce boilerplate or even \nintroduce Dependency Injection Container if your types have other dependencies.  Alternatively, all methods of the registry could be static - then there is no need\nto pass it in constructor - instead just use use  TypeRegistry::myAType()  in your \ntype definitions.",
-            "title": "Type Registry"
-        },
-        {
-            "location": "/type-system/object-types/",
-            "text": "Object Type Definition\n\n\nObject Type is the most frequently used primitive in a typical GraphQL application.\n\n\nConceptually Object Type is a collection of Fields. Each field, in turn,\nhas its own type which allows building complex hierarchies.\n\n\nIn \ngraphql-php\n object type is an instance of \nGraphQL\\Type\\Definition\\ObjectType\n \n(or one of it subclasses) which accepts configuration array in constructor:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Examples\\Blog\\Data\\DataSource;\nuse GraphQL\\Examples\\Blog\\Data\\Story;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'description' => 'Our blog visitor',\n    'fields' => [\n        'firstName' => [\n            'type' => Type::string(),\n            'description' => 'User first name'\n        ],\n        'email' => Type::string()\n    ]\n]);\n\n$blogStory = new ObjectType([\n    'name' => 'Story',\n    'fields' => [\n        'body' => Type::string(),\n        'author' => [\n            'type' => $userType,\n            'description' => 'Story author',\n            'resolve' => function(Story $blogStory) {\n                return DataSource::findUser($blogStory->authorId);\n            }\n        ],\n        'likes' => [\n            'type' => Type::listOf($userType),\n            'description' => 'List of users who liked the story',\n            'args' => [\n                'limit' => [\n                    'type' => Type::int(),\n                    'description' => 'Limit the number of recent likes returned',\n                    'defaultValue' => 10\n                ]\n            ],\n            'resolve' => function(Story $blogStory, $args) {\n                return DataSource::findLikes($blogStory->id, $args['limit']);\n            }\n        ]\n    ]\n]);\n\n\n\n\nThis example uses \ninline\n style for Object Type definitions, but you can also use\n\n\ninheritance or type language\n.\n\n\nConfiguration options\n\n\nObject type constructor expects configuration array. Below is a full list of available options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Unique name of this object type within Schema\n\n\n\n\n\n\nfields\n\n\narray\n or \ncallable\n\n\nRequired\n. An array describing object fields or callable returning such an array. See \nFields\n section below for expected structure of each array entry. See also the section on \nCircular types\n for an explanation of when to use callable for this option.\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this type for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\ninterfaces\n\n\narray\n or \ncallable\n\n\nList of interfaces implemented by this type or callable returning such a list. See \nInterface Types\n for details. See also the section on \nCircular types\n for an explanation of when to use callable for this option.\n\n\n\n\n\n\nisTypeOf\n\n\ncallable\n\n\nfunction($value, $context, \nResolveInfo\n $info)\n Expected to return \ntrue\n if \n$value\n qualifies for this type (see section about \nAbstract Type Resolution\n for explanation).\n\n\n\n\n\n\nresolveField\n\n\ncallable\n\n\nfunction($value, $args, $context, \nResolveInfo\n $info)\n Given the \n$value\n of this type, it is expected to return value for a field defined in \n$info->fieldName\n. A good place to define a type-specific strategy for field resolution. See section on \nData Fetching\n for details.\n\n\n\n\n\n\n\n\nField configuration options\n\n\nBelow is a full list of available field configuration options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Name of the field. When not set - inferred from \nfields\n array key (read about \nshorthand field definition\n below)\n\n\n\n\n\n\ntype\n\n\nType\n\n\nRequired.\n An instance of internal or custom type. Note: type must be represented by a single instance within one schema (see also \nType Registry\n)\n\n\n\n\n\n\nargs\n\n\narray\n\n\nAn array of possible type arguments. Each entry is expected to be an array with keys: \nname\n, \ntype\n, \ndescription\n, \ndefaultValue\n. See \nField Arguments\n section below.\n\n\n\n\n\n\nresolve\n\n\ncallable\n\n\nfunction($value, $args, $context, \nResolveInfo\n $info)\n Given the \n$value\n of this type, it is expected to return actual value of the current field. See section on \nData Fetching\n for details\n\n\n\n\n\n\ncomplexity\n\n\ncallable\n\n\nfunction($childrenComplexity, $args)\n Used to restrict query complexity. The feature is disabled by default, read about \nSecurity\n to use it.\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this field for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\ndeprecationReason\n\n\nstring\n\n\nText describing why this field is deprecated. When not empty - field will not be returned by introspection queries (unless forced)\n\n\n\n\n\n\n\n\nField arguments\n\n\nEvery field on a GraphQL object type can have zero or more arguments, defined in \nargs\n option of field definition.\nEach argument is an array with following options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Name of the argument. When not set - inferred from \nargs\n array key\n\n\n\n\n\n\ntype\n\n\nType\n\n\nRequired.\n Instance of one of \nInput Types\n (\nscalar\n, \nenum\n, \nInputObjectType\n + any combination of those with \nnonNull\n and \nlistOf\n modifiers)\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this argument for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\ndefaultValue\n\n\nscalar\n\n\nDefault value for this argument\n\n\n\n\n\n\n\n\nShorthand field definitions\n\n\nFields can be also defined in \nshorthand\n notation (with only \nname\n and \ntype\n options):\n\n\n'fields' => [\n    'id' => Type::id(),\n    'fieldName' => $fieldType\n]\n\n\n\n\nwhich is equivalent of:\n\n\n'fields' => [\n    'id' => ['type' => Type::id()],\n    'fieldName' => ['type' => $fieldName]\n]\n\n\n\n\nwhich is in turn equivalent of the full form:\n\n\n'fields' => [\n    ['name' => 'id', 'type' => Type::id()],\n    ['name' => 'fieldName', 'type' => $fieldName]\n]\n\n\n\n\nSame shorthand notation applies to field arguments as well.\n\n\nRecurring and circular types\n\n\nAlmost all real-world applications contain recurring or circular types. \nThink user friends or nested comments for example. \n\n\ngraphql-php\n allows such types, but you have to use \ncallable\n in \noption \nfields\n (and/or \ninterfaces\n).\n\n\nFor example:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$userType = null;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'fields' => function() use (&$userType) {\n        return [\n            'email' => [\n                'type' => Type::string()\n            ],\n            'friends' => [\n                'type' => Type::listOf($userType)\n            ]\n        ];\n    }\n]);\n\n\n\n\nSame example for \ninheritance style of type definitions\n using \nTypeRegistry\n:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\nclass UserType extends ObjectType\n{\n    public function __construct()\n    {\n        $config = [\n            'fields' => function() {\n                return [\n                    'email' => MyTypes::string(),\n                    'friends' => MyTypes::listOf(MyTypes::user())\n                ];\n            }\n        ];\n        parent::__construct($config);\n    }\n}\n\nclass MyTypes \n{\n    private static $user;\n\n    public static function user()\n    {\n        return self::$user ?: (self::$user = new UserType());\n    }\n\n    public static function string()\n    {\n        return Type::string();\n    }\n\n    public static function listOf($type)\n    {\n        return Type::listOf($type);\n    }\n}\n\n\n\n\nField Resolution\n\n\nField resolution is the primary mechanism in \ngraphql-php\n for returning actual data for your fields.\nIt is implemented using \nresolveField\n callable in type definition or \nresolve\n\ncallable in field definition (which has precedence).\n\n\nRead the section on \nData Fetching\n for a complete description of this process.\n\n\nCustom Metadata\n\n\nAll types in \ngraphql-php\n accept configuration array. In some cases, you may be interested in \npassing your own metadata for type or field definition.\n\n\ngraphql-php\n preserves original configuration array in every type or field instance in \npublic property \n$config\n. Use it to implement app-level mappings and definitions.",
-            "title": "Object Types"
-        },
-        {
-            "location": "/type-system/object-types/#object-type-definition",
-            "text": "Object Type is the most frequently used primitive in a typical GraphQL application.  Conceptually Object Type is a collection of Fields. Each field, in turn,\nhas its own type which allows building complex hierarchies.  In  graphql-php  object type is an instance of  GraphQL\\Type\\Definition\\ObjectType  \n(or one of it subclasses) which accepts configuration array in constructor:  <?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Examples\\Blog\\Data\\DataSource;\nuse GraphQL\\Examples\\Blog\\Data\\Story;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'description' => 'Our blog visitor',\n    'fields' => [\n        'firstName' => [\n            'type' => Type::string(),\n            'description' => 'User first name'\n        ],\n        'email' => Type::string()\n    ]\n]);\n\n$blogStory = new ObjectType([\n    'name' => 'Story',\n    'fields' => [\n        'body' => Type::string(),\n        'author' => [\n            'type' => $userType,\n            'description' => 'Story author',\n            'resolve' => function(Story $blogStory) {\n                return DataSource::findUser($blogStory->authorId);\n            }\n        ],\n        'likes' => [\n            'type' => Type::listOf($userType),\n            'description' => 'List of users who liked the story',\n            'args' => [\n                'limit' => [\n                    'type' => Type::int(),\n                    'description' => 'Limit the number of recent likes returned',\n                    'defaultValue' => 10\n                ]\n            ],\n            'resolve' => function(Story $blogStory, $args) {\n                return DataSource::findLikes($blogStory->id, $args['limit']);\n            }\n        ]\n    ]\n]);  This example uses  inline  style for Object Type definitions, but you can also use  inheritance or type language .",
-            "title": "Object Type Definition"
-        },
-        {
-            "location": "/type-system/object-types/#configuration-options",
-            "text": "Object type constructor expects configuration array. Below is a full list of available options:     Option  Type  Notes      name  string  Required.  Unique name of this object type within Schema    fields  array  or  callable  Required . An array describing object fields or callable returning such an array. See  Fields  section below for expected structure of each array entry. See also the section on  Circular types  for an explanation of when to use callable for this option.    description  string  Plain-text description of this type for clients (e.g. used by  GraphiQL  for auto-generated documentation)    interfaces  array  or  callable  List of interfaces implemented by this type or callable returning such a list. See  Interface Types  for details. See also the section on  Circular types  for an explanation of when to use callable for this option.    isTypeOf  callable  function($value, $context,  ResolveInfo  $info)  Expected to return  true  if  $value  qualifies for this type (see section about  Abstract Type Resolution  for explanation).    resolveField  callable  function($value, $args, $context,  ResolveInfo  $info)  Given the  $value  of this type, it is expected to return value for a field defined in  $info->fieldName . A good place to define a type-specific strategy for field resolution. See section on  Data Fetching  for details.",
-            "title": "Configuration options"
-        },
-        {
-            "location": "/type-system/object-types/#field-configuration-options",
-            "text": "Below is a full list of available field configuration options:     Option  Type  Notes      name  string  Required.  Name of the field. When not set - inferred from  fields  array key (read about  shorthand field definition  below)    type  Type  Required.  An instance of internal or custom type. Note: type must be represented by a single instance within one schema (see also  Type Registry )    args  array  An array of possible type arguments. Each entry is expected to be an array with keys:  name ,  type ,  description ,  defaultValue . See  Field Arguments  section below.    resolve  callable  function($value, $args, $context,  ResolveInfo  $info)  Given the  $value  of this type, it is expected to return actual value of the current field. See section on  Data Fetching  for details    complexity  callable  function($childrenComplexity, $args)  Used to restrict query complexity. The feature is disabled by default, read about  Security  to use it.    description  string  Plain-text description of this field for clients (e.g. used by  GraphiQL  for auto-generated documentation)    deprecationReason  string  Text describing why this field is deprecated. When not empty - field will not be returned by introspection queries (unless forced)",
-            "title": "Field configuration options"
-        },
-        {
-            "location": "/type-system/object-types/#field-arguments",
-            "text": "Every field on a GraphQL object type can have zero or more arguments, defined in  args  option of field definition.\nEach argument is an array with following options:     Option  Type  Notes      name  string  Required.  Name of the argument. When not set - inferred from  args  array key    type  Type  Required.  Instance of one of  Input Types  ( scalar ,  enum ,  InputObjectType  + any combination of those with  nonNull  and  listOf  modifiers)    description  string  Plain-text description of this argument for clients (e.g. used by  GraphiQL  for auto-generated documentation)    defaultValue  scalar  Default value for this argument",
-            "title": "Field arguments"
-        },
-        {
-            "location": "/type-system/object-types/#shorthand-field-definitions",
-            "text": "Fields can be also defined in  shorthand  notation (with only  name  and  type  options):  'fields' => [\n    'id' => Type::id(),\n    'fieldName' => $fieldType\n]  which is equivalent of:  'fields' => [\n    'id' => ['type' => Type::id()],\n    'fieldName' => ['type' => $fieldName]\n]  which is in turn equivalent of the full form:  'fields' => [\n    ['name' => 'id', 'type' => Type::id()],\n    ['name' => 'fieldName', 'type' => $fieldName]\n]  Same shorthand notation applies to field arguments as well.",
-            "title": "Shorthand field definitions"
-        },
-        {
-            "location": "/type-system/object-types/#recurring-and-circular-types",
-            "text": "Almost all real-world applications contain recurring or circular types. \nThink user friends or nested comments for example.   graphql-php  allows such types, but you have to use  callable  in \noption  fields  (and/or  interfaces ).  For example:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$userType = null;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'fields' => function() use (&$userType) {\n        return [\n            'email' => [\n                'type' => Type::string()\n            ],\n            'friends' => [\n                'type' => Type::listOf($userType)\n            ]\n        ];\n    }\n]);  Same example for  inheritance style of type definitions  using  TypeRegistry :  <?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\nclass UserType extends ObjectType\n{\n    public function __construct()\n    {\n        $config = [\n            'fields' => function() {\n                return [\n                    'email' => MyTypes::string(),\n                    'friends' => MyTypes::listOf(MyTypes::user())\n                ];\n            }\n        ];\n        parent::__construct($config);\n    }\n}\n\nclass MyTypes \n{\n    private static $user;\n\n    public static function user()\n    {\n        return self::$user ?: (self::$user = new UserType());\n    }\n\n    public static function string()\n    {\n        return Type::string();\n    }\n\n    public static function listOf($type)\n    {\n        return Type::listOf($type);\n    }\n}",
-            "title": "Recurring and circular types"
-        },
-        {
-            "location": "/type-system/object-types/#field-resolution",
-            "text": "Field resolution is the primary mechanism in  graphql-php  for returning actual data for your fields.\nIt is implemented using  resolveField  callable in type definition or  resolve \ncallable in field definition (which has precedence).  Read the section on  Data Fetching  for a complete description of this process.",
-            "title": "Field Resolution"
-        },
-        {
-            "location": "/type-system/object-types/#custom-metadata",
-            "text": "All types in  graphql-php  accept configuration array. In some cases, you may be interested in \npassing your own metadata for type or field definition.  graphql-php  preserves original configuration array in every type or field instance in \npublic property  $config . Use it to implement app-level mappings and definitions.",
-            "title": "Custom Metadata"
-        },
-        {
-            "location": "/type-system/scalar-types/",
-            "text": "Built-in Scalar Types\n\n\nGraphQL specification describes several built-in scalar types. In \ngraphql-php\n they are \nexposed as static methods of \nGraphQL\\Type\\Definition\\Type\n class:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\n\n// Built-in Scalar types:\nType::string();  // String type\nType::int();     // Int type\nType::float();   // Float type\nType::boolean(); // Boolean type\nType::id();      // ID type\n\n\n\n\nThose methods return instances of \nGraphQL\\Type\\Definition\\ScalarType\n (actually one of subclasses).\nUse them directly in type definitions, or wrap in your \nTypeRegistry\n \n(if you use one).\n\n\nWriting Custom Scalar Types\n\n\nIn addition to built-in scalars, you can define your own scalar types with additional validation. \nTypical examples of such types are \nEmail\n, \nDate\n, \nUrl\n, etc.\n\n\nIn order to implement your own type, you must understand how scalars are presented in GraphQL.\nGraphQL deals with scalars in following cases:\n\n\n\n\n\n\nWhen converting \ninternal representation\n of value returned by your app (e.g. stored in a database \nor hardcoded in the source code) to \nserialized\n representation included in the response.\n\n\n\n\n\n\nWhen converting \ninput value\n passed by a client in variables along with GraphQL query to \n\ninternal representation\n of your app.\n\n\n\n\n\n\nWhen converting \ninput literal value\n hardcoded in GraphQL query (e.g. field argument value) to \nthe \ninternal representation\n of your app.\n\n\n\n\n\n\nThose cases are covered by methods \nserialize\n, \nparseValue\n and \nparseLiteral\n of abstract \nScalarType\n \nclass respectively.\n\n\nHere is an example of a simple \nEmail\n type:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Error\\Error;\nuse GraphQL\\Error\\InvariantViolation;\nuse GraphQL\\Language\\AST\\StringValueNode;\nuse GraphQL\\Type\\Definition\\ScalarType;\nuse GraphQL\\Utils\\Utils;\n\nclass EmailType extends ScalarType\n{\n    // Note: name can be omitted. In this case it will be inferred from class name \n    // (suffix \"Type\" will be dropped)\n    public $name = 'Email';\n\n    /**\n     * Serializes an internal value to include in a response.\n     *\n     * @param string $value\n     * @return string\n     */\n    public function serialize($value)\n    {\n        // Assuming internal representation of email is always correct:\n        return $value;\n\n        // If it might be incorrect and you want to make sure that only correct values are included\n        // in response - use following line instead:\n        // if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {\n        //     throw new InvariantViolation(\"Could not serialize following value as email: \" . Utils::printSafe($value));\n        // }\n        // return $this->parseValue($value);\n    }\n\n    /**\n     * Parses an externally provided value (query variable) to use as an input\n     *\n     * @param mixed $value\n     * @return mixed\n     */\n    public function parseValue($value)\n    {\n        if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {\n            throw new Error(\"Cannot represent following value as email: \" . Utils::printSafeJson($value));\n        }\n        return $value;\n    }\n\n    /**\n     * Parses an externally provided literal value (hardcoded in GraphQL query) to use as an input.\n     * \n     * E.g. \n     * {\n     *   user(email: \"user@example.com\") \n     * }\n     *\n     * @param \\GraphQL\\Language\\AST\\Node $valueNode\n     * @return string\n     * @throws Error\n     */\n    public function parseLiteral($valueNode)\n    {\n        // Note: throwing GraphQL\\Error\\Error vs \\UnexpectedValueException to benefit from GraphQL\n        // error location in query:\n        if (!$valueNode instanceof StringValueNode) {\n            throw new Error('Query error: Can only parse strings got: ' . $valueNode->kind, [$valueNode]);\n        }\n        if (!filter_var($valueNode->value, FILTER_VALIDATE_EMAIL)) {\n            throw new Error(\"Not a valid email\", [$valueNode]);\n        }\n        return $valueNode->value;\n    }\n}\n\n\n\n\nOr with inline style:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\CustomScalarType;\n\n$emailType = new CustomScalarType([\n    'name' => 'Email',\n    'serialize' => function($value) {/* See function body above */},\n    'parseValue' => function($value) {/* See function body above */},\n    'parseLiteral' => function($valueNode) {/* See function body above */},\n]);",
-            "title": "Scalar Types"
-        },
-        {
-            "location": "/type-system/scalar-types/#built-in-scalar-types",
-            "text": "GraphQL specification describes several built-in scalar types. In  graphql-php  they are \nexposed as static methods of  GraphQL\\Type\\Definition\\Type  class:  <?php\nuse GraphQL\\Type\\Definition\\Type;\n\n// Built-in Scalar types:\nType::string();  // String type\nType::int();     // Int type\nType::float();   // Float type\nType::boolean(); // Boolean type\nType::id();      // ID type  Those methods return instances of  GraphQL\\Type\\Definition\\ScalarType  (actually one of subclasses).\nUse them directly in type definitions, or wrap in your  TypeRegistry  \n(if you use one).",
-            "title": "Built-in Scalar Types"
-        },
-        {
-            "location": "/type-system/scalar-types/#writing-custom-scalar-types",
-            "text": "In addition to built-in scalars, you can define your own scalar types with additional validation. \nTypical examples of such types are  Email ,  Date ,  Url , etc.  In order to implement your own type, you must understand how scalars are presented in GraphQL.\nGraphQL deals with scalars in following cases:    When converting  internal representation  of value returned by your app (e.g. stored in a database \nor hardcoded in the source code) to  serialized  representation included in the response.    When converting  input value  passed by a client in variables along with GraphQL query to  internal representation  of your app.    When converting  input literal value  hardcoded in GraphQL query (e.g. field argument value) to \nthe  internal representation  of your app.    Those cases are covered by methods  serialize ,  parseValue  and  parseLiteral  of abstract  ScalarType  \nclass respectively.  Here is an example of a simple  Email  type:  <?php\nnamespace MyApp;\n\nuse GraphQL\\Error\\Error;\nuse GraphQL\\Error\\InvariantViolation;\nuse GraphQL\\Language\\AST\\StringValueNode;\nuse GraphQL\\Type\\Definition\\ScalarType;\nuse GraphQL\\Utils\\Utils;\n\nclass EmailType extends ScalarType\n{\n    // Note: name can be omitted. In this case it will be inferred from class name \n    // (suffix \"Type\" will be dropped)\n    public $name = 'Email';\n\n    /**\n     * Serializes an internal value to include in a response.\n     *\n     * @param string $value\n     * @return string\n     */\n    public function serialize($value)\n    {\n        // Assuming internal representation of email is always correct:\n        return $value;\n\n        // If it might be incorrect and you want to make sure that only correct values are included\n        // in response - use following line instead:\n        // if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {\n        //     throw new InvariantViolation(\"Could not serialize following value as email: \" . Utils::printSafe($value));\n        // }\n        // return $this->parseValue($value);\n    }\n\n    /**\n     * Parses an externally provided value (query variable) to use as an input\n     *\n     * @param mixed $value\n     * @return mixed\n     */\n    public function parseValue($value)\n    {\n        if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {\n            throw new Error(\"Cannot represent following value as email: \" . Utils::printSafeJson($value));\n        }\n        return $value;\n    }\n\n    /**\n     * Parses an externally provided literal value (hardcoded in GraphQL query) to use as an input.\n     * \n     * E.g. \n     * {\n     *   user(email: \"user@example.com\") \n     * }\n     *\n     * @param \\GraphQL\\Language\\AST\\Node $valueNode\n     * @return string\n     * @throws Error\n     */\n    public function parseLiteral($valueNode)\n    {\n        // Note: throwing GraphQL\\Error\\Error vs \\UnexpectedValueException to benefit from GraphQL\n        // error location in query:\n        if (!$valueNode instanceof StringValueNode) {\n            throw new Error('Query error: Can only parse strings got: ' . $valueNode->kind, [$valueNode]);\n        }\n        if (!filter_var($valueNode->value, FILTER_VALIDATE_EMAIL)) {\n            throw new Error(\"Not a valid email\", [$valueNode]);\n        }\n        return $valueNode->value;\n    }\n}  Or with inline style:  <?php\nuse GraphQL\\Type\\Definition\\CustomScalarType;\n\n$emailType = new CustomScalarType([\n    'name' => 'Email',\n    'serialize' => function($value) {/* See function body above */},\n    'parseValue' => function($value) {/* See function body above */},\n    'parseLiteral' => function($valueNode) {/* See function body above */},\n]);",
-            "title": "Writing Custom Scalar Types"
-        },
-        {
-            "location": "/type-system/enum-types/",
-            "text": "Enum Type Definition\n\n\nEnumeration types are a special kind of scalar that is restricted to a particular set \nof allowed values. \n\n\nIn \ngraphql-php\n enum type is an instance of \nGraphQL\\Type\\Definition\\EnumType\n \nwhich accepts configuration array in constructor:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => [\n            'value' => 4,\n            'description' => 'Released in 1977.'\n        ],\n        'EMPIRE' => [\n            'value' => 5,\n            'description' => 'Released in 1980.'\n        ],\n        'JEDI' => [\n            'value' => 6,\n            'description' => 'Released in 1983.'\n        ],\n    ]\n]);\n\n\n\n\nThis example uses an \ninline\n style for Enum Type definition, but you can also use\n\ninheritance or type language\n.\n\n\nConfiguration options\n\n\nEnum Type constructor accepts an array with following options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Name of the type. When not set - inferred from array key (read about \nshorthand field definition\n below)\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of the type for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\nvalues\n\n\narray\n\n\nList of enumerated items, see below for expected structure of each entry\n\n\n\n\n\n\n\n\nEach entry of \nvalues\n array in turn accepts following options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Name of the item. When not set - inferred from array key (read about \nshorthand field definition\n below)\n\n\n\n\n\n\nvalue\n\n\nmixed\n\n\nInternal representation of enum item in your application (could be any value, including complex objects or callbacks)\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of enum value for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\ndeprecationReason\n\n\nstring\n\n\nText describing why this enum value is deprecated. When not empty - item will not be returned by introspection queries (unless forced)\n\n\n\n\n\n\n\n\nShorthand definitions\n\n\nIf internal representation of enumerated item is the same as item name, then you can use\nfollowing shorthand for definition:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => ['NEWHOPE', 'EMPIRE', 'JEDI']\n]);\n\n\n\n\nwhich is equivalent of:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => ['value' => 'NEWHOPE'], \n        'EMPIRE' => ['value' => 'EMPIRE'], \n        'JEDI' => ['value' => 'JEDI']\n    ]\n]);\n\n\n\n\nwhich is in turn equivalent of the full form:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        ['name' => 'NEWHOPE', 'value' => 'NEWHOPE'], \n        ['name' => 'EMPIRE', 'value' => 'EMPIRE'], \n        ['name' => 'JEDI', 'value' => 'JEDI']\n    ]\n]);\n\n\n\n\nField Resolution\n\n\nWhen object field is of Enum Type, field resolver is expected to return an internal \nrepresentation of corresponding Enum item (\nvalue\n in config). \ngraphql-php\n will \nthen serialize this \nvalue\n to \nname\n to include in response:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\EnumType;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => [\n            'value' => 4,\n            'description' => 'Released in 1977.'\n        ],\n        'EMPIRE' => [\n            'value' => 5,\n            'description' => 'Released in 1980.'\n        ],\n        'JEDI' => [\n            'value' => 6,\n            'description' => 'Released in 1983.'\n        ],\n    ]\n]);\n\n$heroType = new ObjectType([\n    'name' => 'Hero',\n    'fields' => [\n        'appearsIn' => [\n            'type' => $episodeEnum,\n            'resolve' => function() {\n                return 5; // Actual entry in response will be 'appearsIn' => 'EMPIRE'\n            }\n        ]\n    ]\n]);\n\n\n\n\nThe Reverse is true when the enum is used as input type (e.g. as field argument). \nGraphQL will treat enum input as \nname\n and convert it into \nvalue\n before passing to your app.\n\n\nFor example, given object type definition:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$heroType = new ObjectType([\n    'name' => 'Hero',\n    'fields' => [\n        'appearsIn' => [\n            'type' => Type::boolean(),\n            'args' => [\n                'episode' => Type::nonNull($enumType)\n            ],\n            'resolve' => function($_value, $args) {\n                return $args['episode'] === 5 ? true : false; \n            }\n        ]\n    ]\n]);\n\n\n\n\nThen following query:\n\n\nfragment on Hero {\n    appearsInNewHope: appearsIn(NEWHOPE)\n    appearsInEmpire: appearsIn(EMPIRE)\n}\n\n\n\n\nwill return:\n\n\n[\n    'appearsInNewHope' => false,\n    'appearsInEmpire' => true\n]",
-            "title": "Enumeration Types"
-        },
-        {
-            "location": "/type-system/enum-types/#enum-type-definition",
-            "text": "Enumeration types are a special kind of scalar that is restricted to a particular set \nof allowed values.   In  graphql-php  enum type is an instance of  GraphQL\\Type\\Definition\\EnumType  \nwhich accepts configuration array in constructor:  <?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => [\n            'value' => 4,\n            'description' => 'Released in 1977.'\n        ],\n        'EMPIRE' => [\n            'value' => 5,\n            'description' => 'Released in 1980.'\n        ],\n        'JEDI' => [\n            'value' => 6,\n            'description' => 'Released in 1983.'\n        ],\n    ]\n]);  This example uses an  inline  style for Enum Type definition, but you can also use inheritance or type language .",
-            "title": "Enum Type Definition"
-        },
-        {
-            "location": "/type-system/enum-types/#configuration-options",
-            "text": "Enum Type constructor accepts an array with following options:     Option  Type  Notes      name  string  Required.  Name of the type. When not set - inferred from array key (read about  shorthand field definition  below)    description  string  Plain-text description of the type for clients (e.g. used by  GraphiQL  for auto-generated documentation)    values  array  List of enumerated items, see below for expected structure of each entry     Each entry of  values  array in turn accepts following options:     Option  Type  Notes      name  string  Required.  Name of the item. When not set - inferred from array key (read about  shorthand field definition  below)    value  mixed  Internal representation of enum item in your application (could be any value, including complex objects or callbacks)    description  string  Plain-text description of enum value for clients (e.g. used by  GraphiQL  for auto-generated documentation)    deprecationReason  string  Text describing why this enum value is deprecated. When not empty - item will not be returned by introspection queries (unless forced)",
-            "title": "Configuration options"
-        },
-        {
-            "location": "/type-system/enum-types/#shorthand-definitions",
-            "text": "If internal representation of enumerated item is the same as item name, then you can use\nfollowing shorthand for definition:  <?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => ['NEWHOPE', 'EMPIRE', 'JEDI']\n]);  which is equivalent of:  <?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => ['value' => 'NEWHOPE'], \n        'EMPIRE' => ['value' => 'EMPIRE'], \n        'JEDI' => ['value' => 'JEDI']\n    ]\n]);  which is in turn equivalent of the full form:  <?php\nuse GraphQL\\Type\\Definition\\EnumType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        ['name' => 'NEWHOPE', 'value' => 'NEWHOPE'], \n        ['name' => 'EMPIRE', 'value' => 'EMPIRE'], \n        ['name' => 'JEDI', 'value' => 'JEDI']\n    ]\n]);",
-            "title": "Shorthand definitions"
-        },
-        {
-            "location": "/type-system/enum-types/#field-resolution",
-            "text": "When object field is of Enum Type, field resolver is expected to return an internal \nrepresentation of corresponding Enum item ( value  in config).  graphql-php  will \nthen serialize this  value  to  name  to include in response:  <?php\nuse GraphQL\\Type\\Definition\\EnumType;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$episodeEnum = new EnumType([\n    'name' => 'Episode',\n    'description' => 'One of the films in the Star Wars Trilogy',\n    'values' => [\n        'NEWHOPE' => [\n            'value' => 4,\n            'description' => 'Released in 1977.'\n        ],\n        'EMPIRE' => [\n            'value' => 5,\n            'description' => 'Released in 1980.'\n        ],\n        'JEDI' => [\n            'value' => 6,\n            'description' => 'Released in 1983.'\n        ],\n    ]\n]);\n\n$heroType = new ObjectType([\n    'name' => 'Hero',\n    'fields' => [\n        'appearsIn' => [\n            'type' => $episodeEnum,\n            'resolve' => function() {\n                return 5; // Actual entry in response will be 'appearsIn' => 'EMPIRE'\n            }\n        ]\n    ]\n]);  The Reverse is true when the enum is used as input type (e.g. as field argument). \nGraphQL will treat enum input as  name  and convert it into  value  before passing to your app.  For example, given object type definition:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$heroType = new ObjectType([\n    'name' => 'Hero',\n    'fields' => [\n        'appearsIn' => [\n            'type' => Type::boolean(),\n            'args' => [\n                'episode' => Type::nonNull($enumType)\n            ],\n            'resolve' => function($_value, $args) {\n                return $args['episode'] === 5 ? true : false; \n            }\n        ]\n    ]\n]);  Then following query:  fragment on Hero {\n    appearsInNewHope: appearsIn(NEWHOPE)\n    appearsInEmpire: appearsIn(EMPIRE)\n}  will return:  [\n    'appearsInNewHope' => false,\n    'appearsInEmpire' => true\n]",
-            "title": "Field Resolution"
-        },
-        {
-            "location": "/type-system/lists-and-nonnulls/",
-            "text": "Lists\n\n\ngraphql-php\n provides built-in support for lists. In order to create list type - wrap \nexisting type with \nGraphQL\\Type\\Definition\\Type::listOf()\n modifier:\n\n\n<?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'fields' => [\n        'emails' => [\n            'type' => Type::listOf(Type::string()),\n            'resolve' => function() {\n                return ['jon@example.com', 'jonny@example.com'];\n            }\n        ]\n    ]\n]);\n\n\n\n\nResolvers for such fields are expected to return \narray\n or instance of PHP's built-in \nTraversable\n \ninterface (\nnull\n is allowed by default too). \n\n\nIf returned value is not of one of these types - \ngraphql-php\n will add an error to result \nand set the field value to \nnull\n (only if the field is nullable, see below for non-null fields).\n\n\nNon-Null fields\n\n\nBy default in GraphQL, every field can have a \nnull\n value. To indicate that some field always \nreturns \nnon-null\n value - use \nGraphQL\\Type\\Definition\\Type::nonNull()\n modifier:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'User',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::id()),\n            'resolve' => function() {\n                return uniqid();\n            }\n        ],\n        'emails' => [\n            'type' => Type::nonNull(Type::listOf(Type::string())),\n            'resolve' => function() {\n                return ['jon@example.com', 'jonny@example.com'];\n            }\n        ]\n    ]\n]);\n\n\n\n\nIf resolver of non-null field returns \nnull\n, graphql-php will add an error to \nresult and exclude the whole object from the output (an error will bubble to first \nnullable parent field which will be set to \nnull\n).\n\n\nRead the section on \nData Fetching\n for details.",
-            "title": "Lists and Non-Null"
-        },
-        {
-            "location": "/type-system/lists-and-nonnulls/#lists",
-            "text": "graphql-php  provides built-in support for lists. In order to create list type - wrap \nexisting type with  GraphQL\\Type\\Definition\\Type::listOf()  modifier:  <?php\nnamespace MyApp;\n\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$userType = new ObjectType([\n    'name' => 'User',\n    'fields' => [\n        'emails' => [\n            'type' => Type::listOf(Type::string()),\n            'resolve' => function() {\n                return ['jon@example.com', 'jonny@example.com'];\n            }\n        ]\n    ]\n]);  Resolvers for such fields are expected to return  array  or instance of PHP's built-in  Traversable  \ninterface ( null  is allowed by default too).   If returned value is not of one of these types -  graphql-php  will add an error to result \nand set the field value to  null  (only if the field is nullable, see below for non-null fields).",
-            "title": "Lists"
-        },
-        {
-            "location": "/type-system/lists-and-nonnulls/#non-null-fields",
-            "text": "By default in GraphQL, every field can have a  null  value. To indicate that some field always \nreturns  non-null  value - use  GraphQL\\Type\\Definition\\Type::nonNull()  modifier:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'User',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::id()),\n            'resolve' => function() {\n                return uniqid();\n            }\n        ],\n        'emails' => [\n            'type' => Type::nonNull(Type::listOf(Type::string())),\n            'resolve' => function() {\n                return ['jon@example.com', 'jonny@example.com'];\n            }\n        ]\n    ]\n]);  If resolver of non-null field returns  null , graphql-php will add an error to \nresult and exclude the whole object from the output (an error will bubble to first \nnullable parent field which will be set to  null ).  Read the section on  Data Fetching  for details.",
-            "title": "Non-Null fields"
-        },
-        {
-            "location": "/type-system/interfaces/",
-            "text": "Interface Type Definition\n\n\nAn Interface is an abstract type that includes a certain set of fields that a \ntype must include to implement the interface.\n\n\nIn \ngraphql-php\n interface type is an instance of \nGraphQL\\Type\\Definition\\InterfaceType\n \n(or one of its subclasses) which accepts configuration array in a constructor:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\InterfaceType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$character = new InterfaceType([\n    'name' => 'Character',\n    'description' => 'A character in the Star Wars Trilogy',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::string()),\n            'description' => 'The id of the character.',\n        ],\n        'name' => [\n            'type' => Type::string(),\n            'description' => 'The name of the character.'\n        ]\n    ],\n    'resolveType' => function ($value) {\n        if ($value->type === 'human') {\n            return MyTypes::human();            \n        } else {\n            return MyTypes::droid();\n        }\n    }\n]);\n\n\n\n\nThis example uses \ninline\n style for Interface definition, but you can also use\n\n\ninheritance or type language\n.\n\n\nConfiguration options\n\n\nThe constructor of InterfaceType accepts an array. Below is a full list of allowed options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Unique name of this interface type within Schema\n\n\n\n\n\n\nfields\n\n\narray\n\n\nRequired.\n List of fields required to be defined by interface implementors. Same as \nFields for Object Type\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this type for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\nresolveType\n\n\ncallback\n\n\nfunction($value, $context, \nResolveInfo\n $info)\n Receives \n$value\n from resolver of the parent field and returns concrete interface implementor for this \n$value\n.\n\n\n\n\n\n\n\n\nImplementing interface\n\n\nTo implement the Interface simply add it to \ninterfaces\n array of Object Type definition:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'Human',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::string()),\n            'description' => 'The id of the character.',\n        ],\n        'name' => [\n            'type' => Type::string(),\n            'description' => 'The name of the character.'\n        ]\n    ],\n    'interfaces' => [\n        $character\n    ]\n]);\n\n\n\n\nNote that Object Type must include all fields of interface with exact same types \n(including \nnonNull\n specification) and arguments.\n\n\nThe only exception is when object's field type is more specific than the type of this field defined in interface \n(see \nCovariant return types for interface fields\n below)\n\n\nCovariant return types for interface fields\n\n\nObject types implementing interface may change the field type to more specific.\nExample:\n\n\ninterface A {\n  field1: A\n}\n\ntype B implements A {\n  field1: B\n}\n\n\n\n\nSharing Interface fields\n\n\nSince every Object Type implementing an Interface must have the same set of fields - it often makes \nsense to reuse field definitions of Interface in Object Types:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'Human',\n    'interfaces' => [\n        $character\n    ],\n    'fields' => [\n        'height' => Type::float(),\n        $character->getField('id'),\n        $character->getField('name')\n    ] \n]);\n\n\n\n\nIn this case, field definitions are created only once (as a part of Interface Type) and then \nreused by all interface implementors. It can save several microseconds and kilobytes + ensures that \nfield definitions of Interface and implementors are always in sync.\n\n\nYet it creates a problem with the resolution of such fields. There are two ways how shared fields could \nbe resolved:\n\n\n\n\n\n\nIf field resolution algorithm is the same for all Interface implementors - you can simply add \n\nresolve\n option to field definition in Interface itself.\n\n\n\n\n\n\nIf field resolution varies for different implementations - you can specify \nresolveField\n \noption in \nObject Type config\n and handle field \nresolutions there \n(Note: \nresolve\n option in field definition has precedence over \nresolveField\n option in object type definition)\n\n\n\n\n\n\nInterface role in data fetching\n\n\nThe only responsibility of interface in Data Fetching process is to return concrete Object Type \nfor given \n$value\n in \nresolveType\n. Then resolution of fields is delegated to resolvers of this \nconcrete Object Type.\n\n\nIf a \nresolveType\n option is omitted, graphql-php will loop through all interface implementors and \nuse their \nisTypeOf\n callback to pick the first suitable one. This is obviously less efficient \nthan single \nresolveType\n call. So it is recommended to define \nresolveType\n whenever possible.",
-            "title": "Interfaces"
-        },
-        {
-            "location": "/type-system/interfaces/#interface-type-definition",
-            "text": "An Interface is an abstract type that includes a certain set of fields that a \ntype must include to implement the interface.  In  graphql-php  interface type is an instance of  GraphQL\\Type\\Definition\\InterfaceType  \n(or one of its subclasses) which accepts configuration array in a constructor:  <?php\nuse GraphQL\\Type\\Definition\\InterfaceType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$character = new InterfaceType([\n    'name' => 'Character',\n    'description' => 'A character in the Star Wars Trilogy',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::string()),\n            'description' => 'The id of the character.',\n        ],\n        'name' => [\n            'type' => Type::string(),\n            'description' => 'The name of the character.'\n        ]\n    ],\n    'resolveType' => function ($value) {\n        if ($value->type === 'human') {\n            return MyTypes::human();            \n        } else {\n            return MyTypes::droid();\n        }\n    }\n]);  This example uses  inline  style for Interface definition, but you can also use  inheritance or type language .",
-            "title": "Interface Type Definition"
-        },
-        {
-            "location": "/type-system/interfaces/#configuration-options",
-            "text": "The constructor of InterfaceType accepts an array. Below is a full list of allowed options:     Option  Type  Notes      name  string  Required.  Unique name of this interface type within Schema    fields  array  Required.  List of fields required to be defined by interface implementors. Same as  Fields for Object Type    description  string  Plain-text description of this type for clients (e.g. used by  GraphiQL  for auto-generated documentation)    resolveType  callback  function($value, $context,  ResolveInfo  $info)  Receives  $value  from resolver of the parent field and returns concrete interface implementor for this  $value .",
-            "title": "Configuration options"
-        },
-        {
-            "location": "/type-system/interfaces/#implementing-interface",
-            "text": "To implement the Interface simply add it to  interfaces  array of Object Type definition:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'Human',\n    'fields' => [\n        'id' => [\n            'type' => Type::nonNull(Type::string()),\n            'description' => 'The id of the character.',\n        ],\n        'name' => [\n            'type' => Type::string(),\n            'description' => 'The name of the character.'\n        ]\n    ],\n    'interfaces' => [\n        $character\n    ]\n]);  Note that Object Type must include all fields of interface with exact same types \n(including  nonNull  specification) and arguments.  The only exception is when object's field type is more specific than the type of this field defined in interface \n(see  Covariant return types for interface fields  below)",
-            "title": "Implementing interface"
-        },
-        {
-            "location": "/type-system/interfaces/#covariant-return-types-for-interface-fields",
-            "text": "Object types implementing interface may change the field type to more specific.\nExample:  interface A {\n  field1: A\n}\n\ntype B implements A {\n  field1: B\n}",
-            "title": "Covariant return types for interface fields"
-        },
-        {
-            "location": "/type-system/interfaces/#sharing-interface-fields",
-            "text": "Since every Object Type implementing an Interface must have the same set of fields - it often makes \nsense to reuse field definitions of Interface in Object Types:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$humanType = new ObjectType([\n    'name' => 'Human',\n    'interfaces' => [\n        $character\n    ],\n    'fields' => [\n        'height' => Type::float(),\n        $character->getField('id'),\n        $character->getField('name')\n    ] \n]);  In this case, field definitions are created only once (as a part of Interface Type) and then \nreused by all interface implementors. It can save several microseconds and kilobytes + ensures that \nfield definitions of Interface and implementors are always in sync.  Yet it creates a problem with the resolution of such fields. There are two ways how shared fields could \nbe resolved:    If field resolution algorithm is the same for all Interface implementors - you can simply add  resolve  option to field definition in Interface itself.    If field resolution varies for different implementations - you can specify  resolveField  \noption in  Object Type config  and handle field \nresolutions there \n(Note:  resolve  option in field definition has precedence over  resolveField  option in object type definition)",
-            "title": "Sharing Interface fields"
-        },
-        {
-            "location": "/type-system/interfaces/#interface-role-in-data-fetching",
-            "text": "The only responsibility of interface in Data Fetching process is to return concrete Object Type \nfor given  $value  in  resolveType . Then resolution of fields is delegated to resolvers of this \nconcrete Object Type.  If a  resolveType  option is omitted, graphql-php will loop through all interface implementors and \nuse their  isTypeOf  callback to pick the first suitable one. This is obviously less efficient \nthan single  resolveType  call. So it is recommended to define  resolveType  whenever possible.",
-            "title": "Interface role in data fetching"
-        },
-        {
-            "location": "/type-system/unions/",
-            "text": "Union Type Definition\n\n\nA Union is an abstract type that simply enumerates other Object Types. \nThe value of Union Type is actually a value of one of included Object Types.\n\n\nIn \ngraphql-php\n union type is an instance of \nGraphQL\\Type\\Definition\\UnionType\n \n(or one of its subclasses) which accepts configuration array in a constructor:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\UnionType;\n\n$searchResultType = new UnionType([\n    'name' => 'SearchResult',\n    'types' => [\n        MyTypes::story(),\n        MyTypes::user()\n    ],\n    'resolveType' => function($value) {\n        if ($value->type === 'story') {\n            return MyTypes::story();            \n        } else {\n            return MyTypes::user();\n        }\n    }\n]);\n\n\n\n\nThis example uses \ninline\n style for Union definition, but you can also use\n\n\ninheritance or type language\n.\n\n\nConfiguration options\n\n\nThe constructor of UnionType accepts an array. Below is a full list of allowed options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Unique name of this interface type within Schema\n\n\n\n\n\n\ntypes\n\n\narray\n\n\nRequired.\n List of Object Types included in this Union. Note that you can't create a Union type out of Interfaces or other Unions.\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this type for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\nresolveType\n\n\ncallback\n\n\nfunction($value, $context, \nResolveInfo\n $info)\n Receives \n$value\n from resolver of the parent field and returns concrete Object Type for this \n$value\n.",
-            "title": "Unions"
-        },
-        {
-            "location": "/type-system/unions/#union-type-definition",
-            "text": "A Union is an abstract type that simply enumerates other Object Types. \nThe value of Union Type is actually a value of one of included Object Types.  In  graphql-php  union type is an instance of  GraphQL\\Type\\Definition\\UnionType  \n(or one of its subclasses) which accepts configuration array in a constructor:  <?php\nuse GraphQL\\Type\\Definition\\UnionType;\n\n$searchResultType = new UnionType([\n    'name' => 'SearchResult',\n    'types' => [\n        MyTypes::story(),\n        MyTypes::user()\n    ],\n    'resolveType' => function($value) {\n        if ($value->type === 'story') {\n            return MyTypes::story();            \n        } else {\n            return MyTypes::user();\n        }\n    }\n]);  This example uses  inline  style for Union definition, but you can also use  inheritance or type language .",
-            "title": "Union Type Definition"
-        },
-        {
-            "location": "/type-system/unions/#configuration-options",
-            "text": "The constructor of UnionType accepts an array. Below is a full list of allowed options:     Option  Type  Notes      name  string  Required.  Unique name of this interface type within Schema    types  array  Required.  List of Object Types included in this Union. Note that you can't create a Union type out of Interfaces or other Unions.    description  string  Plain-text description of this type for clients (e.g. used by  GraphiQL  for auto-generated documentation)    resolveType  callback  function($value, $context,  ResolveInfo  $info)  Receives  $value  from resolver of the parent field and returns concrete Object Type for this  $value .",
-            "title": "Configuration options"
-        },
-        {
-            "location": "/type-system/input-types/",
-            "text": "Mutations\n\n\nMutation is just a field of a regular \nObject Type\n with arguments.\nFor GraphQL PHP runtime there is no difference between query fields with arguments and mutations.\nThey are executed \nalmost\n identically. \nTo some extent, Mutation is just a convention described in the GraphQL spec.\n\n\nHere is an example of a mutation operation:\n\n\nmutation CreateReviewForEpisode($ep: EpisodeInput!, $review: ReviewInput!) {\n  createReview(episode: $ep, review: $review) {\n    stars\n    commentary\n  }\n}\n\n\n\n\nTo execute such a mutation, you need \nMutation\n type \nat the root of your schema\n:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$myMutationType = new ObjectType([\n    'name' => 'Mutation',\n    'fields' => [\n        // List of mutations:\n        'createReview' => [\n            'args' => [\n                'episode' => Type::nonNull($episodeInputType),\n                'review' => Type::nonNull($reviewInputType)\n            ],\n            'type' => new ObjectType([\n                'name' => 'CreateReviewOutput',\n                'fields' => [\n                    'stars' => ['type' => Type::int()],\n                    'commentary' => ['type' => Type::string()]\n                ]\n            ]),\n        ],\n        // ... other mutations\n    ]\n]);\n\n\n\n\nAs you can see, the only difference from regular object type is the semantics of field names\n(verbs vs nouns).\n\n\nAlso as we see arguments can be of complex types. To leverage the full power of mutations \n(and field arguments in general) you must learn how to create complex input types.\n\n\nAbout Input and Output Types\n\n\nAll types in GraphQL are of two categories: \ninput\n and \noutput\n.\n\n\n\n\n\n\nOutput\n types (or field types) are: \nScalar\n, \nEnum\n, \nObject\n, \n\nInterface\n, \nUnion\n\n\n\n\n\n\nInput\n types (or argument types) are: \nScalar\n, \nEnum\n, InputObject\n\n\n\n\n\n\nObviously, \nNonNull and List\n types belong to both categories depending on their \ninner type.\n\n\nUntil now all examples of field \narguments\n in this documentation were of \nScalar\n or \n\nEnum\n types. But you can also pass complex objects. \n\n\nThis is particularly valuable in case of mutations, where input data might be rather complex.\n\n\nInput Object Type\n\n\nGraphQL specification defines Input Object Type for complex inputs. It is similar to ObjectType\nexcept that it's fields have no \nargs\n or \nresolve\n options and their \ntype\n must be input type.\n\n\nIn graphql-php \nInput Object Type\n is an instance of \nGraphQL\\Type\\Definition\\InputObjectType\n \n(or one of it subclasses) which accepts configuration array in constructor:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\InputObjectType;\n\n$filters = new InputObjectType([\n    'name' => 'StoryFiltersInput',\n    'fields' => [\n        'author' => [\n            'type' => Type::id(),\n            'description' => 'Only show stories with this author id'\n        ],\n        'popular' => [\n            'type' => Type::boolean(),\n            'description' => 'Only show popular stories (liked by several people)'\n        ],\n        'tags' => [\n            'type' => Type::listOf(Type::string()),\n            'description' => 'Only show stories which contain all of those tags'\n        ]\n    ]\n]);\n\n\n\n\nEvery field may be of other InputObjectType (thus complex hierarchies of inputs are possible)\n\n\nConfiguration options\n\n\nThe constructor of InputObjectType accepts array with only 3 options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Unique name of this object type within Schema\n\n\n\n\n\n\nfields\n\n\narray\n or \ncallable\n\n\nRequired\n. An array describing object fields or callable returning such an array (see below).\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this type for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\n\n\nEvery field is an array with following entries:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nname\n\n\nstring\n\n\nRequired.\n Name of the input field. When not set - inferred from \nfields\n array key\n\n\n\n\n\n\ntype\n\n\nType\n\n\nRequired.\n Instance of one of \nInput Types\n (\nScalar\n, \nEnum\n, \nInputObjectType\n + any combination of those with \nnonNull\n and \nlistOf\n modifiers)\n\n\n\n\n\n\ndescription\n\n\nstring\n\n\nPlain-text description of this input field for clients (e.g. used by \nGraphiQL\n for auto-generated documentation)\n\n\n\n\n\n\ndefaultValue\n\n\nscalar\n\n\nDefault value of this input field\n\n\n\n\n\n\n\n\nUsing Input Object Type\n\n\nIn the example above we defined our InputObjectType. Now let's use it in one of field arguments:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'stories' => [\n            'type' => Type::listOf($storyType),\n            'args' => [\n                'filters' => [\n                    'type' => Type::nonNull($filters),\n                    'defaultValue' => [\n                        'popular' => true\n                    ]\n                ]\n            ],\n            'resolve' => function($rootValue, $args) {\n                return DataSource::filterStories($args['filters']);\n            }\n        ]\n    ]\n]);\n\n\n\n\n(note that you can define \ndefaultValue\n for fields with complex inputs as associative array).\n\n\nThen GraphQL query could include filters as literal value:\n\n\n{\n    stories(filters: {author: \"1\", popular: false})\n}\n\n\n\n\nOr as query variable:\n\n\nquery($filters: StoryFiltersInput!) {\n    stories(filters: $filters)\n}\n\n\n\n\n$variables = [\n    'filters' => [\n        \"author\" => \"1\",\n        \"popular\" => false\n    ]\n];\n\n\n\n\ngraphql-php\n will validate the input against your InputObjectType definition and pass it to your \nresolver as \n$args['filters']",
-            "title": "Mutations and Input Types"
-        },
-        {
-            "location": "/type-system/input-types/#mutations",
-            "text": "Mutation is just a field of a regular  Object Type  with arguments.\nFor GraphQL PHP runtime there is no difference between query fields with arguments and mutations.\nThey are executed  almost  identically. \nTo some extent, Mutation is just a convention described in the GraphQL spec.  Here is an example of a mutation operation:  mutation CreateReviewForEpisode($ep: EpisodeInput!, $review: ReviewInput!) {\n  createReview(episode: $ep, review: $review) {\n    stars\n    commentary\n  }\n}  To execute such a mutation, you need  Mutation  type  at the root of your schema :  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$myMutationType = new ObjectType([\n    'name' => 'Mutation',\n    'fields' => [\n        // List of mutations:\n        'createReview' => [\n            'args' => [\n                'episode' => Type::nonNull($episodeInputType),\n                'review' => Type::nonNull($reviewInputType)\n            ],\n            'type' => new ObjectType([\n                'name' => 'CreateReviewOutput',\n                'fields' => [\n                    'stars' => ['type' => Type::int()],\n                    'commentary' => ['type' => Type::string()]\n                ]\n            ]),\n        ],\n        // ... other mutations\n    ]\n]);  As you can see, the only difference from regular object type is the semantics of field names\n(verbs vs nouns).  Also as we see arguments can be of complex types. To leverage the full power of mutations \n(and field arguments in general) you must learn how to create complex input types.",
-            "title": "Mutations"
-        },
-        {
-            "location": "/type-system/input-types/#about-input-and-output-types",
-            "text": "All types in GraphQL are of two categories:  input  and  output .    Output  types (or field types) are:  Scalar ,  Enum ,  Object ,  Interface ,  Union    Input  types (or argument types) are:  Scalar ,  Enum , InputObject    Obviously,  NonNull and List  types belong to both categories depending on their \ninner type.  Until now all examples of field  arguments  in this documentation were of  Scalar  or  Enum  types. But you can also pass complex objects.   This is particularly valuable in case of mutations, where input data might be rather complex.",
-            "title": "About Input and Output Types"
-        },
-        {
-            "location": "/type-system/input-types/#input-object-type",
-            "text": "GraphQL specification defines Input Object Type for complex inputs. It is similar to ObjectType\nexcept that it's fields have no  args  or  resolve  options and their  type  must be input type.  In graphql-php  Input Object Type  is an instance of  GraphQL\\Type\\Definition\\InputObjectType  \n(or one of it subclasses) which accepts configuration array in constructor:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\InputObjectType;\n\n$filters = new InputObjectType([\n    'name' => 'StoryFiltersInput',\n    'fields' => [\n        'author' => [\n            'type' => Type::id(),\n            'description' => 'Only show stories with this author id'\n        ],\n        'popular' => [\n            'type' => Type::boolean(),\n            'description' => 'Only show popular stories (liked by several people)'\n        ],\n        'tags' => [\n            'type' => Type::listOf(Type::string()),\n            'description' => 'Only show stories which contain all of those tags'\n        ]\n    ]\n]);  Every field may be of other InputObjectType (thus complex hierarchies of inputs are possible)",
-            "title": "Input Object Type"
-        },
-        {
-            "location": "/type-system/input-types/#configuration-options",
-            "text": "The constructor of InputObjectType accepts array with only 3 options:     Option  Type  Notes      name  string  Required.  Unique name of this object type within Schema    fields  array  or  callable  Required . An array describing object fields or callable returning such an array (see below).    description  string  Plain-text description of this type for clients (e.g. used by  GraphiQL  for auto-generated documentation)     Every field is an array with following entries:     Option  Type  Notes      name  string  Required.  Name of the input field. When not set - inferred from  fields  array key    type  Type  Required.  Instance of one of  Input Types  ( Scalar ,  Enum ,  InputObjectType  + any combination of those with  nonNull  and  listOf  modifiers)    description  string  Plain-text description of this input field for clients (e.g. used by  GraphiQL  for auto-generated documentation)    defaultValue  scalar  Default value of this input field",
-            "title": "Configuration options"
-        },
-        {
-            "location": "/type-system/input-types/#using-input-object-type",
-            "text": "In the example above we defined our InputObjectType. Now let's use it in one of field arguments:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'stories' => [\n            'type' => Type::listOf($storyType),\n            'args' => [\n                'filters' => [\n                    'type' => Type::nonNull($filters),\n                    'defaultValue' => [\n                        'popular' => true\n                    ]\n                ]\n            ],\n            'resolve' => function($rootValue, $args) {\n                return DataSource::filterStories($args['filters']);\n            }\n        ]\n    ]\n]);  (note that you can define  defaultValue  for fields with complex inputs as associative array).  Then GraphQL query could include filters as literal value:  {\n    stories(filters: {author: \"1\", popular: false})\n}  Or as query variable:  query($filters: StoryFiltersInput!) {\n    stories(filters: $filters)\n}  $variables = [\n    'filters' => [\n        \"author\" => \"1\",\n        \"popular\" => false\n    ]\n];  graphql-php  will validate the input against your InputObjectType definition and pass it to your \nresolver as  $args['filters']",
-            "title": "Using Input Object Type"
-        },
-        {
-            "location": "/type-system/directives/",
-            "text": "Built-in directives\n\n\nThe directive is a way for a client to give GraphQL server additional context and hints on how to execute\nthe query. The directive can be attached to a field or fragment and can affect the execution of the \nquery in any way the server desires.\n\n\nGraphQL specification includes two built-in directives:\n\n\n\n\n@include(if: Boolean)\n Only include this field or fragment in the result if the argument is \ntrue\n \n\n\n@skip(if: Boolean)\n Skip this field or fragment if the argument is \ntrue\n\n\n\n\nFor example:\n\n\nquery Hero($episode: Episode, $withFriends: Boolean!) {\n  hero(episode: $episode) {\n    name\n    friends @include(if: $withFriends) {\n      name\n    }\n  }\n}\n\n\n\n\nHere if \n$withFriends\n variable is set to \nfalse\n - friends section will be ignored and excluded \nfrom the response. Important implementation detail: those fields will never be executed \n(not just removed from response after execution).\n\n\nCustom directives\n\n\ngraphql-php\n supports custom directives even though their presence does not affect the execution of fields.\nBut you can use \nGraphQL\\Type\\Definition\\ResolveInfo\n \nin field resolvers to modify the output depending on those directives or perform statistics collection.\n\n\nOther use case is your own query validation rules relying on custom directives.\n\n\nIn \ngraphql-php\n custom directive is an instance of \nGraphQL\\Type\\Definition\\Directive\n\n(or one of its subclasses) which accepts an array of following options:\n\n\n<?php\nuse GraphQL\\Language\\DirectiveLocation;\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\Directive;\nuse GraphQL\\Type\\Definition\\FieldArgument;\n\n$trackDirective = new Directive([\n    'name' => 'track',\n    'description' => 'Instruction to record usage of the field by client',\n    'locations' => [\n        DirectiveLocation::FIELD,\n    ],\n    'args' => [\n        new FieldArgument([\n            'name' => 'details',\n            'type' => Type::string(),\n            'description' => 'String with additional details of field usage scenario',\n            'defaultValue' => ''\n        ])\n    ]\n]);\n\n\n\n\nSee possible directive locations in \n\nGraphQL\\Language\\DirectiveLocation\n.",
-            "title": "Directives"
-        },
-        {
-            "location": "/type-system/directives/#built-in-directives",
-            "text": "The directive is a way for a client to give GraphQL server additional context and hints on how to execute\nthe query. The directive can be attached to a field or fragment and can affect the execution of the \nquery in any way the server desires.  GraphQL specification includes two built-in directives:   @include(if: Boolean)  Only include this field or fragment in the result if the argument is  true    @skip(if: Boolean)  Skip this field or fragment if the argument is  true   For example:  query Hero($episode: Episode, $withFriends: Boolean!) {\n  hero(episode: $episode) {\n    name\n    friends @include(if: $withFriends) {\n      name\n    }\n  }\n}  Here if  $withFriends  variable is set to  false  - friends section will be ignored and excluded \nfrom the response. Important implementation detail: those fields will never be executed \n(not just removed from response after execution).",
-            "title": "Built-in directives"
-        },
-        {
-            "location": "/type-system/directives/#custom-directives",
-            "text": "graphql-php  supports custom directives even though their presence does not affect the execution of fields.\nBut you can use  GraphQL\\Type\\Definition\\ResolveInfo  \nin field resolvers to modify the output depending on those directives or perform statistics collection.  Other use case is your own query validation rules relying on custom directives.  In  graphql-php  custom directive is an instance of  GraphQL\\Type\\Definition\\Directive \n(or one of its subclasses) which accepts an array of following options:  <?php\nuse GraphQL\\Language\\DirectiveLocation;\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\Directive;\nuse GraphQL\\Type\\Definition\\FieldArgument;\n\n$trackDirective = new Directive([\n    'name' => 'track',\n    'description' => 'Instruction to record usage of the field by client',\n    'locations' => [\n        DirectiveLocation::FIELD,\n    ],\n    'args' => [\n        new FieldArgument([\n            'name' => 'details',\n            'type' => Type::string(),\n            'description' => 'String with additional details of field usage scenario',\n            'defaultValue' => ''\n        ])\n    ]\n]);  See possible directive locations in  GraphQL\\Language\\DirectiveLocation .",
-            "title": "Custom directives"
-        },
-        {
-            "location": "/type-system/schema/",
-            "text": "Schema Definition\n\n\nThe schema is a container of your type hierarchy, which accepts root types in a constructor and provides\nmethods for receiving information about your types to internal GrahpQL tools.\n\n\nIn \ngraphql-php\n schema is an instance of \nGraphQL\\Type\\Schema\n \nwhich accepts configuration array in a constructor:\n\n\n<?php\nuse GraphQL\\Type\\Schema;\n\n$schema = new Schema([\n    'query' => $queryType, \n    'mutation' => $mutationType,\n]);\n\n\n\n\nSee possible constructor options \nbelow\n.\n\n\nQuery and Mutation types\n\n\nThe schema consists of two root types:\n\n\n\n\nQuery\n type is a surface of your read API\n\n\nMutation\n type (optional) exposes write API by declaring all possible mutations in your app. \n\n\n\n\nQuery and Mutation types are regular \nobject types\n containing root-level fields \nof your API:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'hello' => [\n            'type' => Type::string(),\n            'resolve' => function() {\n                return 'Hello World!';\n            }\n        ],\n        'hero' => [\n            'type' => $characterInterface,\n            'args' => [\n                'episode' => [\n                    'type' => $episodeEnum\n                ]\n            ],\n            'resolve' => function ($rootValue, $args) {\n                return StarWarsData::getHero(isset($args['episode']) ? $args['episode'] : null);\n            },\n        ]\n    ]\n]);\n\n$mutationType = new ObjectType([\n    'name' => 'Mutation',\n    'fields' => [\n        'createReview' => [\n            'type' => $createReviewOutput,\n            'args' => [\n                'episode' => $episodeEnum,\n                'review' => $reviewInputObject\n            ],\n            'resolve' => function($val, $args) {\n                // TODOC\n            }\n        ]\n    ]\n]);\n\n\n\n\nKeep in mind that other than the special meaning of declaring a surface area of your API, \nthose types are the same as any other \nobject type\n, and their fields work \nexactly the same way.\n\n\nMutation\n type is also just a regular object type. The difference is in semantics. \nField names of Mutation type are usually verbs and they almost always have arguments - quite often \nwith complex input values (see \nMutations and Input Types\n for details).\n\n\nConfiguration Options\n\n\nSchema constructor expects an instance of \nGraphQL\\Type\\SchemaConfig\n \nor an array with following options:\n\n\n\n\n\n\n\n\nOption\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nquery\n\n\nObjectType\n\n\nRequired.\n Object type (usually named \"Query\") containing root-level fields of your read API\n\n\n\n\n\n\nmutation\n\n\nObjectType\n\n\nObject type (usually named \"Mutation\") containing root-level fields of your write API\n\n\n\n\n\n\nsubscription\n\n\nObjectType\n\n\nReserved for future subscriptions implementation. Currently presented for compatibility with introspection query of \ngraphql-js\n, used by various clients (like Relay or GraphiQL)\n\n\n\n\n\n\ndirectives\n\n\nDirective[]\n\n\nA full list of \ndirectives\n supported by your schema. By default, contains built-in \n@skip\n and \n@include\n directives.\n If you pass your own directives and still want to use built-in directives - add them explicitly. For example:\n \narray_merge(GraphQL::getStandardDirectives(), [$myCustomDirective]);\n\n\n\n\n\n\ntypes\n\n\nObjectType[]\n\n\nList of object types which cannot be detected by \ngraphql-php\n during static schema analysis.\nMost often it happens when the object type is never referenced in fields directly but is still a part of a schema because it implements an interface which resolves to this object type in its \nresolveType\n callable. \n Note that you are not required to pass all of your types here - it is simply a workaround for concrete use-case.\n\n\n\n\n\n\ntypeLoader\n\n\ncallable\n\n\nfunction($name)\n Expected to return type instance given the name. Must always return the same instance if called multiple times. See section below on lazy type loading.\n\n\n\n\n\n\n\n\nUsing config class\n\n\nIf you prefer fluid interface for config with auto-completion in IDE and static time validation, \nuse \nGraphQL\\Type\\SchemaConfig\n instead of an array:\n\n\n<?php\nuse GraphQL\\Type\\SchemaConfig;\nuse GraphQL\\Type\\Schema;\n\n$config = SchemaConfig::create()\n    ->setQuery($myQueryType)\n    ->setTypeLoader($myTypeLoader);\n\n$schema = new Schema($config);\n\n\n\n\nLazy loading of types\n\n\nBy default, the schema will scan all of your type, field and argument definitions to serve GraphQL queries. \nIt may cause performance overhead when there are many types in the schema. \n\n\nIn this case, it is recommended to pass \ntypeLoader\n option to schema constructor and define all \nof your object \nfields\n as callbacks.\n\n\nType loading concept is very similar to PHP class loading, but keep in mind that \ntypeLoader\n must\nalways return the same instance of a type.\n\n\nUsage example:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Schema;\n\nclass Types\n{\n    private $types = [];\n\n    public function get($name)\n    {\n        if (!isset($this->types[$name])) {\n            $this->types[$name] = $this->{$name}();\n        }\n        return $this->types[$name];\n    }\n\n    private function MyTypeA()\n    {\n        return new ObjectType([\n            'name' => 'MyTypeA',\n            'fields' => function() {\n                return [\n                    'b' => ['type' => $this->get('MyTypeB')]\n                ];\n            }\n        ]);\n    }\n\n    private function MyTypeB()\n    {\n        // ...\n    }\n}\n\n$registry = new Types();\n\n$schema = new Schema([\n    'query' => $registry->get('Query'),\n    'typeLoader' => function($name) use ($registry) {\n        return $registry->get($name);\n    }\n]);\n\n\n\n\nSchema Validation\n\n\nBy default, the schema is created with only shallow validation of type and field definitions\n\n(because validation requires full schema scan and is very costly on bigger schemas).\n\n\nBut there is a special method \nassertValid()\n on schema instance which throws \n\nGraphQL\\Error\\InvariantViolation\n exception when it encounters any error, like:\n\n\n\n\nInvalid types used for fields/arguments\n\n\nMissing interface implementations\n\n\nInvalid interface implementations\n\n\nOther schema errors...\n\n\n\n\nSchema validation is supposed to be used in CLI commands or during build step of your app.\nDon't call it in web requests in production. \n\n\nUsage example:\n\n\n<?php\ntry {\n    $schema = new GraphQL\\Type\\Schema([\n        'query' => $myQueryType\n    ]);\n    $schema->assertValid();\n} catch (GraphQL\\Error\\InvariantViolation $e) {\n    echo $e->getMessage();\n}",
-            "title": "Schema"
-        },
-        {
-            "location": "/type-system/schema/#schema-definition",
-            "text": "The schema is a container of your type hierarchy, which accepts root types in a constructor and provides\nmethods for receiving information about your types to internal GrahpQL tools.  In  graphql-php  schema is an instance of  GraphQL\\Type\\Schema  \nwhich accepts configuration array in a constructor:  <?php\nuse GraphQL\\Type\\Schema;\n\n$schema = new Schema([\n    'query' => $queryType, \n    'mutation' => $mutationType,\n]);  See possible constructor options  below .",
-            "title": "Schema Definition"
-        },
-        {
-            "location": "/type-system/schema/#query-and-mutation-types",
-            "text": "The schema consists of two root types:   Query  type is a surface of your read API  Mutation  type (optional) exposes write API by declaring all possible mutations in your app.    Query and Mutation types are regular  object types  containing root-level fields \nof your API:  <?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\Type;\n\n$queryType = new ObjectType([\n    'name' => 'Query',\n    'fields' => [\n        'hello' => [\n            'type' => Type::string(),\n            'resolve' => function() {\n                return 'Hello World!';\n            }\n        ],\n        'hero' => [\n            'type' => $characterInterface,\n            'args' => [\n                'episode' => [\n                    'type' => $episodeEnum\n                ]\n            ],\n            'resolve' => function ($rootValue, $args) {\n                return StarWarsData::getHero(isset($args['episode']) ? $args['episode'] : null);\n            },\n        ]\n    ]\n]);\n\n$mutationType = new ObjectType([\n    'name' => 'Mutation',\n    'fields' => [\n        'createReview' => [\n            'type' => $createReviewOutput,\n            'args' => [\n                'episode' => $episodeEnum,\n                'review' => $reviewInputObject\n            ],\n            'resolve' => function($val, $args) {\n                // TODOC\n            }\n        ]\n    ]\n]);  Keep in mind that other than the special meaning of declaring a surface area of your API, \nthose types are the same as any other  object type , and their fields work \nexactly the same way.  Mutation  type is also just a regular object type. The difference is in semantics. \nField names of Mutation type are usually verbs and they almost always have arguments - quite often \nwith complex input values (see  Mutations and Input Types  for details).",
-            "title": "Query and Mutation types"
-        },
-        {
-            "location": "/type-system/schema/#configuration-options",
-            "text": "Schema constructor expects an instance of  GraphQL\\Type\\SchemaConfig  \nor an array with following options:     Option  Type  Notes      query  ObjectType  Required.  Object type (usually named \"Query\") containing root-level fields of your read API    mutation  ObjectType  Object type (usually named \"Mutation\") containing root-level fields of your write API    subscription  ObjectType  Reserved for future subscriptions implementation. Currently presented for compatibility with introspection query of  graphql-js , used by various clients (like Relay or GraphiQL)    directives  Directive[]  A full list of  directives  supported by your schema. By default, contains built-in  @skip  and  @include  directives.  If you pass your own directives and still want to use built-in directives - add them explicitly. For example:   array_merge(GraphQL::getStandardDirectives(), [$myCustomDirective]);    types  ObjectType[]  List of object types which cannot be detected by  graphql-php  during static schema analysis. Most often it happens when the object type is never referenced in fields directly but is still a part of a schema because it implements an interface which resolves to this object type in its  resolveType  callable.   Note that you are not required to pass all of your types here - it is simply a workaround for concrete use-case.    typeLoader  callable  function($name)  Expected to return type instance given the name. Must always return the same instance if called multiple times. See section below on lazy type loading.",
-            "title": "Configuration Options"
-        },
-        {
-            "location": "/type-system/schema/#using-config-class",
-            "text": "If you prefer fluid interface for config with auto-completion in IDE and static time validation, \nuse  GraphQL\\Type\\SchemaConfig  instead of an array:  <?php\nuse GraphQL\\Type\\SchemaConfig;\nuse GraphQL\\Type\\Schema;\n\n$config = SchemaConfig::create()\n    ->setQuery($myQueryType)\n    ->setTypeLoader($myTypeLoader);\n\n$schema = new Schema($config);",
-            "title": "Using config class"
-        },
-        {
-            "location": "/type-system/schema/#lazy-loading-of-types",
-            "text": "By default, the schema will scan all of your type, field and argument definitions to serve GraphQL queries. \nIt may cause performance overhead when there are many types in the schema.   In this case, it is recommended to pass  typeLoader  option to schema constructor and define all \nof your object  fields  as callbacks.  Type loading concept is very similar to PHP class loading, but keep in mind that  typeLoader  must\nalways return the same instance of a type.  Usage example:  <?php\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Schema;\n\nclass Types\n{\n    private $types = [];\n\n    public function get($name)\n    {\n        if (!isset($this->types[$name])) {\n            $this->types[$name] = $this->{$name}();\n        }\n        return $this->types[$name];\n    }\n\n    private function MyTypeA()\n    {\n        return new ObjectType([\n            'name' => 'MyTypeA',\n            'fields' => function() {\n                return [\n                    'b' => ['type' => $this->get('MyTypeB')]\n                ];\n            }\n        ]);\n    }\n\n    private function MyTypeB()\n    {\n        // ...\n    }\n}\n\n$registry = new Types();\n\n$schema = new Schema([\n    'query' => $registry->get('Query'),\n    'typeLoader' => function($name) use ($registry) {\n        return $registry->get($name);\n    }\n]);",
-            "title": "Lazy loading of types"
-        },
-        {
-            "location": "/type-system/schema/#schema-validation",
-            "text": "By default, the schema is created with only shallow validation of type and field definitions \n(because validation requires full schema scan and is very costly on bigger schemas).  But there is a special method  assertValid()  on schema instance which throws  GraphQL\\Error\\InvariantViolation  exception when it encounters any error, like:   Invalid types used for fields/arguments  Missing interface implementations  Invalid interface implementations  Other schema errors...   Schema validation is supposed to be used in CLI commands or during build step of your app.\nDon't call it in web requests in production.   Usage example:  <?php\ntry {\n    $schema = new GraphQL\\Type\\Schema([\n        'query' => $myQueryType\n    ]);\n    $schema->assertValid();\n} catch (GraphQL\\Error\\InvariantViolation $e) {\n    echo $e->getMessage();\n}",
-            "title": "Schema Validation"
-        },
-        {
-            "location": "/type-system/type-language/",
-            "text": "Defining your schema\n\n\nSince 0.9.0\n\n\nType language\n is a convenient way to define your schema,\nespecially with IDE autocompletion and syntax validation.\n\n\nHere is a simple schema defined in GraphQL type language (e.g. in a separate \nschema.graphql\n file):\n\n\nschema {\n    query: Query\n    mutation: Mutation\n}\n\ntype Query {\n    greetings(input: HelloInput!): String!\n}\n\ninput HelloInput {\n    firstName: String!\n    lastName: String\n}\n\n\n\n\nIn order to create schema instance out of this file, use \n\nGraphQL\\Utils\\BuildSchema\n:\n\n\n<?php\nuse GraphQL\\Utils\\BuildSchema;\n\n$contents = file_get_contents('schema.graphql');\n$schema = BuildSchema::build($contents);\n\n\n\n\nBy default, such schema is created without any resolvers.\n\n\nWe have to rely on \ndefault field resolver\n and \nroot value\n in \norder to execute a query against this schema.\n\n\nPerformance considerations\n\n\nSince 0.10.0\n\n\nMethod \nbuild()\n produces a \nlazy schema\n\nautomatically, so it works efficiently even with very large schemas.\n\n\nBut parsing type definition file on each request is suboptimal, so it is recommended to cache \nintermediate parsed representation of the schema for the production environment:\n\n\n<?php\nuse GraphQL\\Language\\Parser;\nuse GraphQL\\Utils\\BuildSchema;\nuse GraphQL\\Utils\\AST;\n\n$cacheFilename = 'cached_schema.php';\n\nif (!file_exists($cacheFilename)) {\n    $document = Parser::parse(file_get_contents('./schema.graphql'));\n    file_put_contents($cacheFilename, \"<?php\\nreturn \" . var_export(AST::toArray($document), true));\n} else {\n    $document = AST::fromArray(require $cacheFilename); // fromArray() is a lazy operation as well\n}\n\n$typeConfigDecorator = function () {};\n$schema = BuildSchema::build($document, $typeConfigDecorator);",
-            "title": "Using Type Language"
-        },
-        {
-            "location": "/type-system/type-language/#defining-your-schema",
-            "text": "Since 0.9.0  Type language  is a convenient way to define your schema,\nespecially with IDE autocompletion and syntax validation.  Here is a simple schema defined in GraphQL type language (e.g. in a separate  schema.graphql  file):  schema {\n    query: Query\n    mutation: Mutation\n}\n\ntype Query {\n    greetings(input: HelloInput!): String!\n}\n\ninput HelloInput {\n    firstName: String!\n    lastName: String\n}  In order to create schema instance out of this file, use  GraphQL\\Utils\\BuildSchema :  <?php\nuse GraphQL\\Utils\\BuildSchema;\n\n$contents = file_get_contents('schema.graphql');\n$schema = BuildSchema::build($contents);  By default, such schema is created without any resolvers.  We have to rely on  default field resolver  and  root value  in \norder to execute a query against this schema.",
-            "title": "Defining your schema"
-        },
-        {
-            "location": "/type-system/type-language/#performance-considerations",
-            "text": "Since 0.10.0  Method  build()  produces a  lazy schema \nautomatically, so it works efficiently even with very large schemas.  But parsing type definition file on each request is suboptimal, so it is recommended to cache \nintermediate parsed representation of the schema for the production environment:  <?php\nuse GraphQL\\Language\\Parser;\nuse GraphQL\\Utils\\BuildSchema;\nuse GraphQL\\Utils\\AST;\n\n$cacheFilename = 'cached_schema.php';\n\nif (!file_exists($cacheFilename)) {\n    $document = Parser::parse(file_get_contents('./schema.graphql'));\n    file_put_contents($cacheFilename, \"<?php\\nreturn \" . var_export(AST::toArray($document), true));\n} else {\n    $document = AST::fromArray(require $cacheFilename); // fromArray() is a lazy operation as well\n}\n\n$typeConfigDecorator = function () {};\n$schema = BuildSchema::build($document, $typeConfigDecorator);",
-            "title": "Performance considerations"
-        },
-        {
-            "location": "/executing-queries/",
-            "text": "Using Facade Method\n\n\nQuery execution is a complex process involving multiple steps, including query \nparsing\n, \n\nvalidating\n and finally \nexecuting\n against your \nschema\n.\n\n\ngraphql-php\n provides a convenient facade for this process in class \n\nGraphQL\\GraphQL\n:\n\n\n<?php\nuse GraphQL\\GraphQL;\n\n$result = GraphQL::executeQuery(\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $context = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $validationRules = null\n);\n\n\n\n\nIt returns an instance of \nGraphQL\\Executor\\ExecutionResult\n \nwhich can be easily converted to array:\n\n\n$serializableResult = $result->toArray();\n\n\n\n\nReturned array contains \ndata\n and \nerrors\n keys, as described by the \n\nGraphQL spec\n. \nThis array is suitable for further serialization (e.g. using \njson_encode\n).\nSee also the section on \nerror handling and formatting\n.\n\n\nDescription of \nexecuteQuery\n method arguments:\n\n\n\n\n\n\n\n\nArgument\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nschema\n\n\nGraphQL\\Type\\Schema\n\n\nRequired.\n Instance of your application \nSchema\n\n\n\n\n\n\nqueryString\n\n\nstring\n or \nGraphQL\\Language\\AST\\DocumentNode\n\n\nRequired.\n Actual GraphQL query string to be parsed, validated and executed. If you parse query elsewhere before executing - pass corresponding AST document here to avoid new parsing.\n\n\n\n\n\n\nrootValue\n\n\nmixed\n\n\nAny value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of \nQuery type\n. Can be omitted or set to null if actual root values are fetched by Query type itself.\n\n\n\n\n\n\ncontext\n\n\nmixed\n\n\nAny value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc.\nIt will be available as the 3rd argument in all field resolvers. (see section on \nField Definitions\n for reference) \ngraphql-php\n never modifies this value and passes it \nas is\n to all underlying resolvers.\n\n\n\n\n\n\nvariableValues\n\n\narray\n\n\nMap of variable values passed along with query string. See section on \nquery variables on official GraphQL website\n\n\n\n\n\n\noperationName\n\n\nstring\n\n\nAllows the caller to specify which operation in queryString will be run, in cases where queryString contains multiple top-level operations.\n\n\n\n\n\n\nfieldResolver\n\n\ncallable\n\n\nA resolver function to use when one is not provided by the schema. If not provided, the \ndefault field resolver is used\n.\n\n\n\n\n\n\nvalidationRules\n\n\narray\n\n\nA set of rules for query validation step. The default value is all available rules. Empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution)\n\n\n\n\n\n\n\n\nUsing Server\n\n\nIf you are building HTTP GraphQL API, you may prefer our Standard Server \n(compatible with \nexpress-graphql\n). \nIt supports more features out of the box, including parsing HTTP requests, producing a spec-compliant response; \nbatched queries\n; persisted queries.\n\n\nUsage example (with plain PHP):\n\n\n<?php\nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([/* server options, see below */]);\n$server->handleRequest(); // parses PHP globals and emits response\n\n\n\n\nServer also supports \nPSR-7 request/response interfaces\n:\n\n\n<?php\nuse GraphQL\\Server\\StandardServer;\nuse GraphQL\\Executor\\ExecutionResult;\nuse Psr\\Http\\Message\\ServerRequestInterface;\nuse Psr\\Http\\Message\\ResponseInterface;\nuse Psr\\Http\\Message\\StreamInterface;\n\n/** @var ServerRequestInterface $psrRequest */\n/** @var ResponseInterface $psrResponse */\n/** @var StreamInterface $psrBodyStream */\n$server = new StandardServer([/* server options, see below */]);\n$psrResponse = $server->processPsrRequest($psrRequest, $psrResponse, $psrBodyStream);\n\n\n// Alternatively create PSR-7 response yourself:\n\n/** @var ExecutionResult|ExecutionResult[] $result */\n$result = $server->executePsrRequest($psrRequest);\n$psrResponse = new SomePsr7ResponseImplementation(json_encode($result));\n\n\n\n\nPSR-7 is useful when you want to integrate the server into existing framework:\n\n\n\n\nPSR-7 for Laravel\n\n\nSymfony PSR-7 Bridge\n\n\nSlim\n\n\nZend Expressive\n\n\n\n\nServer configuration options\n\n\n\n\n\n\n\n\nArgument\n\n\nType\n\n\nNotes\n\n\n\n\n\n\n\n\n\n\nschema\n\n\nSchema\n\n\nRequired.\n Instance of your application \nSchema\n\n\n\n\n\n\nrootValue\n\n\nmixed\n\n\nAny value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of \nQuery type\n. Can be omitted or set to null if actual root values are fetched by Query type itself.\n\n\n\n\n\n\ncontext\n\n\nmixed\n\n\nAny value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc.\nIt will be available as the 3rd argument in all field resolvers. (see section on \nField Definitions\n for reference) \ngraphql-php\n never modifies this value and passes it \nas is\n to all underlying resolvers.\n\n\n\n\n\n\nfieldResolver\n\n\ncallable\n\n\nA resolver function to use when one is not provided by the schema. If not provided, the \ndefault field resolver is used\n.\n\n\n\n\n\n\nvalidationRules\n\n\narray\n or \ncallable\n\n\nA set of rules for query validation step. The default value is all available rules. The empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution).\nPass \ncallable\n to return different validation rules for different queries (e.g. empty array for persisted query and a full list of rules for regular queries). When passed, it is expected to have the following signature: \n \nfunction (\nOperationParams\n $params, DocumentNode $node, $operationType): array\n\n\n\n\n\n\nqueryBatching\n\n\nbool\n\n\nFlag indicating whether this server supports query batching (\napollo-style\n).\n Defaults to \nfalse\n\n\n\n\n\n\ndebug\n\n\nint\n\n\nDebug flags. See \ndocs on error debugging\n (flag values are the same).\n\n\n\n\n\n\npersistentQueryLoader\n\n\ncallable\n\n\nA function which is called to fetch actual query when server encounters \nqueryId\n in request vs \nquery\n.\n The server does not implement persistence part (which you will have to build on your own), but it allows you to execute queries which were persisted previously.\n Expected function signature:\n \nfunction ($queryId, \nOperationParams\n $params)\n \nFunction is expected to return query \nstring\n or parsed \nDocumentNode\n \n \nRead more about persisted queries\n.\n\n\n\n\n\n\nerrorFormatter\n\n\ncallable\n\n\nCustom error formatter. See \nerror handling docs\n.\n\n\n\n\n\n\nerrorsHandler\n\n\ncallable\n\n\nCustom errors handler. See \nerror handling docs\n.\n\n\n\n\n\n\npromiseAdapter\n\n\nPromiseAdapter\n\n\nRequired for \nAsync PHP\n only.\n\n\n\n\n\n\n\n\nServer config instance\n\n\nIf you prefer fluid interface for config with autocomplete in IDE and static time validation, \nuse \nGraphQL\\Server\\ServerConfig\n instead of an array:\n\n\n<?php\nuse GraphQL\\Server\\ServerConfig;\nuse GraphQL\\Server\\StandardServer;\n\n$config = ServerConfig::create()\n    ->setSchema($schema)\n    ->setErrorFormatter($myFormatter)\n    ->setDebug($debug)\n;\n\n$server = new StandardServer($config);\n\n\n\n\nQuery batching\n\n\nStandard Server supports query batching (\napollo-style\n).\n\n\nOne of the major benefits of Server over a sequence of \nexecuteQuery()\n calls is that \n\nDeferred resolvers\n won't be isolated in queries.\nSo for example following batch will require single DB request (if user field is deferred):\n\n\n[\n  {\n    \"query\": \"{user(id: 1)} { id }\"\n  },\n  {\n    \"query\": \"{user(id: 2)} { id }\"\n  },\n  {\n    \"query\": \"{user(id: 3)} { id }\"\n  }\n]\n\n\n\n\nTo enable query batching, pass \nqueryBatching\n option in server config:\n\n\n<?php\nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([\n    'queryBatching' => true\n]);\n\n\n\n\nCustom Validation Rules\n\n\nBefore execution, a query is validated using a set of standard rules defined by the GraphQL spec.\nIt is possible to override standard set of rules globally or per execution.\n\n\nAdd rules globally:\n\n\n<?php\nuse GraphQL\\Validator\\Rules;\nuse GraphQL\\Validator\\DocumentValidator;\n\n// Add to standard set of rules globally:\nDocumentValidator::addRule(new Rules\\DisableIntrospection());\n\n\n\n\nCustom rules per execution:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules;\n\n$myValiationRules = array_merge(\n    GraphQL::getStandardValidationRules(),\n    [\n        new Rules\\QueryComplexity(100),\n        new Rules\\DisableIntrospection()\n    ]\n);\n\n$result = GraphQL::executeQuery(\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $context = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $myValiationRules // <-- this will override global validation rules for this request\n);\n\n\n\n\nOr with a standard server:\n\n\n<?php \nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([\n    'validationRules' => $myValiationRules\n]);",
-            "title": "Executing Queries"
-        },
-        {
-            "location": "/executing-queries/#using-facade-method",
-            "text": "Query execution is a complex process involving multiple steps, including query  parsing ,  validating  and finally  executing  against your  schema .  graphql-php  provides a convenient facade for this process in class  GraphQL\\GraphQL :  <?php\nuse GraphQL\\GraphQL;\n\n$result = GraphQL::executeQuery(\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $context = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $validationRules = null\n);  It returns an instance of  GraphQL\\Executor\\ExecutionResult  \nwhich can be easily converted to array:  $serializableResult = $result->toArray();  Returned array contains  data  and  errors  keys, as described by the  GraphQL spec . \nThis array is suitable for further serialization (e.g. using  json_encode ).\nSee also the section on  error handling and formatting .  Description of  executeQuery  method arguments:     Argument  Type  Notes      schema  GraphQL\\Type\\Schema  Required.  Instance of your application  Schema    queryString  string  or  GraphQL\\Language\\AST\\DocumentNode  Required.  Actual GraphQL query string to be parsed, validated and executed. If you parse query elsewhere before executing - pass corresponding AST document here to avoid new parsing.    rootValue  mixed  Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of  Query type . Can be omitted or set to null if actual root values are fetched by Query type itself.    context  mixed  Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on  Field Definitions  for reference)  graphql-php  never modifies this value and passes it  as is  to all underlying resolvers.    variableValues  array  Map of variable values passed along with query string. See section on  query variables on official GraphQL website    operationName  string  Allows the caller to specify which operation in queryString will be run, in cases where queryString contains multiple top-level operations.    fieldResolver  callable  A resolver function to use when one is not provided by the schema. If not provided, the  default field resolver is used .    validationRules  array  A set of rules for query validation step. The default value is all available rules. Empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution)",
-            "title": "Using Facade Method"
-        },
-        {
-            "location": "/executing-queries/#using-server",
-            "text": "If you are building HTTP GraphQL API, you may prefer our Standard Server \n(compatible with  express-graphql ). \nIt supports more features out of the box, including parsing HTTP requests, producing a spec-compliant response;  batched queries ; persisted queries.  Usage example (with plain PHP):  <?php\nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([/* server options, see below */]);\n$server->handleRequest(); // parses PHP globals and emits response  Server also supports  PSR-7 request/response interfaces :  <?php\nuse GraphQL\\Server\\StandardServer;\nuse GraphQL\\Executor\\ExecutionResult;\nuse Psr\\Http\\Message\\ServerRequestInterface;\nuse Psr\\Http\\Message\\ResponseInterface;\nuse Psr\\Http\\Message\\StreamInterface;\n\n/** @var ServerRequestInterface $psrRequest */\n/** @var ResponseInterface $psrResponse */\n/** @var StreamInterface $psrBodyStream */\n$server = new StandardServer([/* server options, see below */]);\n$psrResponse = $server->processPsrRequest($psrRequest, $psrResponse, $psrBodyStream);\n\n\n// Alternatively create PSR-7 response yourself:\n\n/** @var ExecutionResult|ExecutionResult[] $result */\n$result = $server->executePsrRequest($psrRequest);\n$psrResponse = new SomePsr7ResponseImplementation(json_encode($result));  PSR-7 is useful when you want to integrate the server into existing framework:   PSR-7 for Laravel  Symfony PSR-7 Bridge  Slim  Zend Expressive",
-            "title": "Using Server"
-        },
-        {
-            "location": "/executing-queries/#server-configuration-options",
-            "text": "Argument  Type  Notes      schema  Schema  Required.  Instance of your application  Schema    rootValue  mixed  Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of  Query type . Can be omitted or set to null if actual root values are fetched by Query type itself.    context  mixed  Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on  Field Definitions  for reference)  graphql-php  never modifies this value and passes it  as is  to all underlying resolvers.    fieldResolver  callable  A resolver function to use when one is not provided by the schema. If not provided, the  default field resolver is used .    validationRules  array  or  callable  A set of rules for query validation step. The default value is all available rules. The empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution). Pass  callable  to return different validation rules for different queries (e.g. empty array for persisted query and a full list of rules for regular queries). When passed, it is expected to have the following signature:    function ( OperationParams  $params, DocumentNode $node, $operationType): array    queryBatching  bool  Flag indicating whether this server supports query batching ( apollo-style ).  Defaults to  false    debug  int  Debug flags. See  docs on error debugging  (flag values are the same).    persistentQueryLoader  callable  A function which is called to fetch actual query when server encounters  queryId  in request vs  query .  The server does not implement persistence part (which you will have to build on your own), but it allows you to execute queries which were persisted previously.  Expected function signature:   function ($queryId,  OperationParams  $params)   Function is expected to return query  string  or parsed  DocumentNode     Read more about persisted queries .    errorFormatter  callable  Custom error formatter. See  error handling docs .    errorsHandler  callable  Custom errors handler. See  error handling docs .    promiseAdapter  PromiseAdapter  Required for  Async PHP  only.     Server config instance  If you prefer fluid interface for config with autocomplete in IDE and static time validation, \nuse  GraphQL\\Server\\ServerConfig  instead of an array:  <?php\nuse GraphQL\\Server\\ServerConfig;\nuse GraphQL\\Server\\StandardServer;\n\n$config = ServerConfig::create()\n    ->setSchema($schema)\n    ->setErrorFormatter($myFormatter)\n    ->setDebug($debug)\n;\n\n$server = new StandardServer($config);",
-            "title": "Server configuration options"
-        },
-        {
-            "location": "/executing-queries/#query-batching",
-            "text": "Standard Server supports query batching ( apollo-style ).  One of the major benefits of Server over a sequence of  executeQuery()  calls is that  Deferred resolvers  won't be isolated in queries.\nSo for example following batch will require single DB request (if user field is deferred):  [\n  {\n    \"query\": \"{user(id: 1)} { id }\"\n  },\n  {\n    \"query\": \"{user(id: 2)} { id }\"\n  },\n  {\n    \"query\": \"{user(id: 3)} { id }\"\n  }\n]  To enable query batching, pass  queryBatching  option in server config:  <?php\nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([\n    'queryBatching' => true\n]);",
-            "title": "Query batching"
-        },
-        {
-            "location": "/executing-queries/#custom-validation-rules",
-            "text": "Before execution, a query is validated using a set of standard rules defined by the GraphQL spec.\nIt is possible to override standard set of rules globally or per execution.  Add rules globally:  <?php\nuse GraphQL\\Validator\\Rules;\nuse GraphQL\\Validator\\DocumentValidator;\n\n// Add to standard set of rules globally:\nDocumentValidator::addRule(new Rules\\DisableIntrospection());  Custom rules per execution:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules;\n\n$myValiationRules = array_merge(\n    GraphQL::getStandardValidationRules(),\n    [\n        new Rules\\QueryComplexity(100),\n        new Rules\\DisableIntrospection()\n    ]\n);\n\n$result = GraphQL::executeQuery(\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $context = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $myValiationRules // <-- this will override global validation rules for this request\n);  Or with a standard server:  <?php \nuse GraphQL\\Server\\StandardServer;\n\n$server = new StandardServer([\n    'validationRules' => $myValiationRules\n]);",
-            "title": "Custom Validation Rules"
-        },
-        {
-            "location": "/data-fetching/",
-            "text": "Overview\n\n\nGraphQL is data-storage agnostic. You can use any underlying data storage engine, including SQL or NoSQL database, \nplain files or in-memory data structures.\n\n\nIn order to convert the GraphQL query to PHP array, \ngraphql-php\n traverses query fields (using depth-first algorithm) and \nruns special \nresolve\n function on each field. This \nresolve\n function is provided by you as a part of \n\nfield definition\n or \nquery execution call\n.\n\n\nResult returned by \nresolve\n function is directly included in the response (for scalars and enums)\nor passed down to nested fields (for objects).\n\n\nLet's walk through an example. Consider following GraphQL query:\n\n\n{\n  lastStory {\n    title\n    author {\n      name\n    }\n  }\n}\n\n\n\n\nWe need a Schema that can fulfill it. On the very top level the Schema contains Query type:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$queryType = new ObjectType([\n  'name' => 'Query',\n  'fields' => [\n\n    'lastStory' => [\n      'type' => $blogStoryType,\n      'resolve' => function() {\n        return [\n          'id' => 1,\n          'title' => 'Example blog post',\n          'authorId' => 1\n        ];\n      }\n    ]\n\n  ]\n]);\n\n\n\n\nAs we see field \nlastStory\n has \nresolve\n function that is responsible for fetching data.\n\n\nIn our example, we simply return array value, but in the real-world application you would query\nyour database/cache/search index and return the result.\n\n\nSince \nlastStory\n is of composite type \nBlogStory\n this result is passed down to fields of this type:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$blogStoryType = new ObjectType([\n  'name' => 'BlogStory',\n  'fields' => [\n\n    'author' => [\n      'type' => $userType,\n      'resolve' => function($blogStory) {\n        $users = [\n          1 => [\n            'id' => 1,\n            'name' => 'Smith'\n          ],\n          2 => [\n            'id' => 2,\n            'name' => 'Anderson'\n          ]\n        ];\n        return $users[$blogStory['authorId']];\n      }\n    ],\n\n    'title' => [\n      'type' => Type::string()\n    ]\n\n  ]\n]);\n\n\n\n\nHere \n$blogStory\n is the array returned by \nlastStory\n field above. \n\n\nAgain: in the real-world applications you would fetch user data from data store by \nauthorId\n and return it.\nAlso, note that you don't have to return arrays. You can return any value, \ngraphql-php\n will pass it untouched\nto nested resolvers.\n\n\nBut then the question appears - field \ntitle\n has no \nresolve\n option. How is it resolved?\n\n\nThere is a default resolver for all fields. When you define your own \nresolve\n function\nfor a field you simply override this default resolver.\n\n\nDefault Field Resolver\n\n\ngraphql-php\n provides following default field resolver:\n\n\n<?php\nfunction defaultFieldResolver($source, $args, $context, \\GraphQL\\Type\\Definition\\ResolveInfo $info)\n{\n    $fieldName = $info->fieldName;\n    $property = null;\n\n    if (is_array($source) || $source instanceof \\ArrayAccess) {\n        if (isset($source[$fieldName])) {\n            $property = $source[$fieldName];\n        }\n    } else if (is_object($source)) {\n        if (isset($source->{$fieldName})) {\n            $property = $source->{$fieldName};\n        }\n    }\n\n    return $property instanceof \\Closure ? $property($source, $args, $context) : $property;\n}\n\n\n\n\nAs you see it returns value by key (for arrays) or property (for objects). \nIf the value is not set - it returns \nnull\n.\n\n\nTo override the default resolver, pass it as an argument of \nexecuteQuery\n call.\n\n\nDefault Field Resolver per Type\n\n\nSometimes it might be convenient to set default field resolver per type. You can do so by providing\n\nresolveField option in type config\n. For example:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\ResolveInfo;\n\n$userType = new ObjectType([\n  'name' => 'User',\n  'fields' => [\n\n    'name' => Type::string(),\n    'email' => Type::string()\n\n  ],\n  'resolveField' => function(User $user, $args, $context, ResolveInfo $info) {\n    switch ($info->fieldName) {\n        case 'name':\n          return $user->getName();\n        case 'email':\n          return $user->getEmail();\n        default:\n          return null;\n    }\n  }\n]);\n\n\n\n\nKeep in mind that \nfield resolver\n has precedence over \ndefault field resolver per type\n which in turn\n has precedence over \ndefault field resolver\n.\n\n\nSolving N+1 Problem\n\n\nSince: 0.9.0\n\n\nOne of the most annoying problems with data fetching is a so-called \n\nN+1 problem\n. \n\nConsider following GraphQL query:\n\n\n{\n  topStories(limit: 10) {\n    title\n    author {\n      name\n      email\n    }\n  }\n}\n\n\n\n\nNaive field resolution process would require up to 10 calls to the underlying data store to fetch authors for all 10 stories.\n\n\ngraphql-php\n provides tools to mitigate this problem: it allows you to defer actual field resolution to a later stage \nwhen one batched query could be executed instead of 10 distinct queries.\n\n\nHere is an example of \nBlogStory\n resolver for field \nauthor\n that uses deferring:\n\n\n<?php\n'resolve' => function($blogStory) {\n    MyUserBuffer::add($blogStory['authorId']);\n\n    return new GraphQL\\Deferred(function () use ($blogStory) {\n        MyUserBuffer::loadBuffered();\n        return MyUserBuffer::get($blogStory['authorId']);\n    });\n}\n\n\n\n\nIn this example, we fill up the buffer with 10 author ids first. Then \ngraphql-php\n continues \nresolving other non-deferred fields until there are none of them left.\n\n\nAfter that, it calls closures wrapped by \nGraphQL\\Deferred\n which in turn load all buffered \nids once (using SQL IN(?), Redis MGET or other similar tools) and returns final field value.\n\n\nOriginally this approach was advocated by Facebook in their \nDataloader\n\nproject. This solution enables very interesting optimizations at no cost. Consider the following query:\n\n\n{\n  topStories(limit: 10) {\n    author {\n      email\n    }\n  }\n  category {\n    stories(limit: 10) {\n      author {\n        email\n      }\n    }\n  }\n}\n\n\n\n\nEven though \nauthor\n field is located on different levels of the query - it can be buffered in the same buffer.\nIn this example, only one query will be executed for all story authors comparing to 20 queries\nin a naive implementation.\n\n\nAsync PHP\n\n\nSince: 0.10.0 (version 0.9.0 had slightly different API which still works, but is deprecated)\n\n\nIf your project runs in an environment that supports async operations \n(like HHVM, ReactPHP, Icicle.io, appserver.io, PHP threads, etc) \nyou can leverage the power of your platform to resolve some fields asynchronously.\n\n\nThe only requirement: your platform must support the concept of Promises compatible with\n\nPromises A+\n specification.\n\n\nTo start using this feature, switch facade method for query execution from \n\nexecuteQuery\n to \npromiseToExecute\n:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Executor\\ExecutionResult;\n\n$promise = GraphQL::promiseToExecute(\n    $promiseAdapter,\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $contextValue = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $validationRules = null\n);\n$promise->then(function(ExecutionResult $result) {\n    return $result->toArray();\n});\n\n\n\n\nWhere \n$promiseAdapter\n is an instance of:\n\n\n\n\n\n\nFor \nReactPHP\n (requires \nreact/promise\n as composer dependency): \n \n  \nGraphQL\\Executor\\Promise\\Adapter\\ReactPromiseAdapter\n\n\n\n\n\n\nOther platforms: write your own class implementing interface: \n \n  \nGraphQL\\Executor\\Promise\\PromiseAdapter\n. \n\n\n\n\n\n\nThen your \nresolve\n functions should return promises of your platform instead of \nGraphQL\\Deferred\ns.",
-            "title": "Fetching Data"
-        },
-        {
-            "location": "/data-fetching/#overview",
-            "text": "GraphQL is data-storage agnostic. You can use any underlying data storage engine, including SQL or NoSQL database, \nplain files or in-memory data structures.  In order to convert the GraphQL query to PHP array,  graphql-php  traverses query fields (using depth-first algorithm) and \nruns special  resolve  function on each field. This  resolve  function is provided by you as a part of  field definition  or  query execution call .  Result returned by  resolve  function is directly included in the response (for scalars and enums)\nor passed down to nested fields (for objects).  Let's walk through an example. Consider following GraphQL query:  {\n  lastStory {\n    title\n    author {\n      name\n    }\n  }\n}  We need a Schema that can fulfill it. On the very top level the Schema contains Query type:  <?php\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$queryType = new ObjectType([\n  'name' => 'Query',\n  'fields' => [\n\n    'lastStory' => [\n      'type' => $blogStoryType,\n      'resolve' => function() {\n        return [\n          'id' => 1,\n          'title' => 'Example blog post',\n          'authorId' => 1\n        ];\n      }\n    ]\n\n  ]\n]);  As we see field  lastStory  has  resolve  function that is responsible for fetching data.  In our example, we simply return array value, but in the real-world application you would query\nyour database/cache/search index and return the result.  Since  lastStory  is of composite type  BlogStory  this result is passed down to fields of this type:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$blogStoryType = new ObjectType([\n  'name' => 'BlogStory',\n  'fields' => [\n\n    'author' => [\n      'type' => $userType,\n      'resolve' => function($blogStory) {\n        $users = [\n          1 => [\n            'id' => 1,\n            'name' => 'Smith'\n          ],\n          2 => [\n            'id' => 2,\n            'name' => 'Anderson'\n          ]\n        ];\n        return $users[$blogStory['authorId']];\n      }\n    ],\n\n    'title' => [\n      'type' => Type::string()\n    ]\n\n  ]\n]);  Here  $blogStory  is the array returned by  lastStory  field above.   Again: in the real-world applications you would fetch user data from data store by  authorId  and return it.\nAlso, note that you don't have to return arrays. You can return any value,  graphql-php  will pass it untouched\nto nested resolvers.  But then the question appears - field  title  has no  resolve  option. How is it resolved?  There is a default resolver for all fields. When you define your own  resolve  function\nfor a field you simply override this default resolver.",
-            "title": "Overview"
-        },
-        {
-            "location": "/data-fetching/#default-field-resolver",
-            "text": "graphql-php  provides following default field resolver:  <?php\nfunction defaultFieldResolver($source, $args, $context, \\GraphQL\\Type\\Definition\\ResolveInfo $info)\n{\n    $fieldName = $info->fieldName;\n    $property = null;\n\n    if (is_array($source) || $source instanceof \\ArrayAccess) {\n        if (isset($source[$fieldName])) {\n            $property = $source[$fieldName];\n        }\n    } else if (is_object($source)) {\n        if (isset($source->{$fieldName})) {\n            $property = $source->{$fieldName};\n        }\n    }\n\n    return $property instanceof \\Closure ? $property($source, $args, $context) : $property;\n}  As you see it returns value by key (for arrays) or property (for objects). \nIf the value is not set - it returns  null .  To override the default resolver, pass it as an argument of  executeQuery  call.",
-            "title": "Default Field Resolver"
-        },
-        {
-            "location": "/data-fetching/#default-field-resolver-per-type",
-            "text": "Sometimes it might be convenient to set default field resolver per type. You can do so by providing resolveField option in type config . For example:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\nuse GraphQL\\Type\\Definition\\ResolveInfo;\n\n$userType = new ObjectType([\n  'name' => 'User',\n  'fields' => [\n\n    'name' => Type::string(),\n    'email' => Type::string()\n\n  ],\n  'resolveField' => function(User $user, $args, $context, ResolveInfo $info) {\n    switch ($info->fieldName) {\n        case 'name':\n          return $user->getName();\n        case 'email':\n          return $user->getEmail();\n        default:\n          return null;\n    }\n  }\n]);  Keep in mind that  field resolver  has precedence over  default field resolver per type  which in turn\n has precedence over  default field resolver .",
-            "title": "Default Field Resolver per Type"
-        },
-        {
-            "location": "/data-fetching/#solving-n1-problem",
-            "text": "Since: 0.9.0  One of the most annoying problems with data fetching is a so-called  N+1 problem .  \nConsider following GraphQL query:  {\n  topStories(limit: 10) {\n    title\n    author {\n      name\n      email\n    }\n  }\n}  Naive field resolution process would require up to 10 calls to the underlying data store to fetch authors for all 10 stories.  graphql-php  provides tools to mitigate this problem: it allows you to defer actual field resolution to a later stage \nwhen one batched query could be executed instead of 10 distinct queries.  Here is an example of  BlogStory  resolver for field  author  that uses deferring:  <?php\n'resolve' => function($blogStory) {\n    MyUserBuffer::add($blogStory['authorId']);\n\n    return new GraphQL\\Deferred(function () use ($blogStory) {\n        MyUserBuffer::loadBuffered();\n        return MyUserBuffer::get($blogStory['authorId']);\n    });\n}  In this example, we fill up the buffer with 10 author ids first. Then  graphql-php  continues \nresolving other non-deferred fields until there are none of them left.  After that, it calls closures wrapped by  GraphQL\\Deferred  which in turn load all buffered \nids once (using SQL IN(?), Redis MGET or other similar tools) and returns final field value.  Originally this approach was advocated by Facebook in their  Dataloader \nproject. This solution enables very interesting optimizations at no cost. Consider the following query:  {\n  topStories(limit: 10) {\n    author {\n      email\n    }\n  }\n  category {\n    stories(limit: 10) {\n      author {\n        email\n      }\n    }\n  }\n}  Even though  author  field is located on different levels of the query - it can be buffered in the same buffer.\nIn this example, only one query will be executed for all story authors comparing to 20 queries\nin a naive implementation.",
-            "title": "Solving N+1 Problem"
-        },
-        {
-            "location": "/data-fetching/#async-php",
-            "text": "Since: 0.10.0 (version 0.9.0 had slightly different API which still works, but is deprecated)  If your project runs in an environment that supports async operations \n(like HHVM, ReactPHP, Icicle.io, appserver.io, PHP threads, etc) \nyou can leverage the power of your platform to resolve some fields asynchronously.  The only requirement: your platform must support the concept of Promises compatible with Promises A+  specification.  To start using this feature, switch facade method for query execution from  executeQuery  to  promiseToExecute :  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Executor\\ExecutionResult;\n\n$promise = GraphQL::promiseToExecute(\n    $promiseAdapter,\n    $schema, \n    $queryString, \n    $rootValue = null, \n    $contextValue = null, \n    $variableValues = null, \n    $operationName = null,\n    $fieldResolver = null,\n    $validationRules = null\n);\n$promise->then(function(ExecutionResult $result) {\n    return $result->toArray();\n});  Where  $promiseAdapter  is an instance of:    For  ReactPHP  (requires  react/promise  as composer dependency):   \n   GraphQL\\Executor\\Promise\\Adapter\\ReactPromiseAdapter    Other platforms: write your own class implementing interface:   \n   GraphQL\\Executor\\Promise\\PromiseAdapter .     Then your  resolve  functions should return promises of your platform instead of  GraphQL\\Deferred s.",
-            "title": "Async PHP"
-        },
-        {
-            "location": "/error-handling/",
-            "text": "Errors in GraphQL\n\n\nQuery execution process never throws exceptions. Instead, all errors are caught and collected. \nAfter execution, they are available in \n$errors\n prop of \n\nGraphQL\\Executor\\ExecutionResult\n.\n\n\nWhen the result is converted to a serializable array using its \ntoArray()\n method, all errors are \nconverted to arrays as well using default error formatting (see below). \n\n\nAlternatively, you can apply \ncustom error filtering and formatting\n\nfor your specific requirements.\n\n\nDefault Error formatting\n\n\nBy default, each error entry is converted to an associative array with following structure:\n\n\n<?php\n[\n    'message' => 'Error message',\n    'category' => 'graphql',\n    'locations' => [\n        ['line' => 1, 'column' => 2]\n    ],\n    'path' => [\n        'listField',\n        0,\n        'fieldWithException'\n    ]\n];\n\n\n\n\nEntry at key \nlocations\n points to a character in query string which caused the error.\nIn some cases (like deep fragment fields) locations will include several entries to track down \nthe path to field with the error in query.\n\n\nEntry at key \npath\n exists only for errors caused by exceptions thrown in resolvers. \nIt contains a path from the very root field to actual field value producing an error \n(including indexes for list types and field names for composite types). \n\n\nInternal errors\n\n\nAs of version \n0.10.0\n, all exceptions thrown in resolvers are reported with generic message \n\"Internal server error\"\n.\nThis is done to avoid information leak in production environments (e.g. database connection errors, file access errors, etc).\n\n\nOnly exceptions implementing interface \nGraphQL\\Error\\ClientAware\n and claiming themselves as \nsafe\n will \nbe reported with a full error message.\n\n\nFor example:\n\n\n<?php\nuse GraphQL\\Error\\ClientAware;\n\nclass MySafeException extends \\Exception implements ClientAware\n{\n    public function isClientSafe()\n    {\n        return true;\n    }\n\n    public function getCategory()\n    {\n        return 'businessLogic';\n    }\n}\n\n\n\n\nWhen such exception is thrown it will be reported with a full error message:\n\n\n<?php\n[\n    'message' => 'My reported error',\n    'category' => 'businessLogic',\n    'locations' => [\n        ['line' => 10, 'column' => 2]\n    ],\n    'path' => [\n        'path',\n        'to',\n        'fieldWithException'\n    ]\n];\n\n\n\n\nTo change default \n\"Internal server error\"\n message to something else, use: \n\n\nGraphQL\\Error\\FormattedError::setInternalErrorMessage(\"Unexpected error\");\n\n\n\n\nDebugging tools\n\n\nDuring development or debugging use \n$result->toArray(true)\n to add \ndebugMessage\n key to \neach formatted error entry. If you also want to add exception trace - pass flags instead:\n\n\nuse GraphQL\\Error\\Debug;\n$debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::INCLUDE_TRACE;\n$result = GraphQL::executeQuery(/*args*/)->toArray($debug);\n\n\n\n\nThis will make each error entry to look like this:\n\n\n<?php\n[\n    'debugMessage' => 'Actual exception message',\n    'message' => 'Internal server error',\n    'category' => 'internal',\n    'locations' => [\n        ['line' => 10, 'column' => 2]\n    ],\n    'path' => [\n        'listField',\n        0,\n        'fieldWithException'\n    ],\n    'trace' => [\n        /* Formatted original exception trace */\n    ]\n];\n\n\n\n\nIf you prefer first resolver exception to be re-thrown, use following flags:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Error\\Debug;\n$debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::RETHROW_INTERNAL_EXCEPTIONS;\n\n// Following will throw if there was an exception in resolver during execution:\n$result = GraphQL::executeQuery(/*args*/)->toArray($debug); \n\n\n\n\nCustom Error Handling and Formatting\n\n\nIt is possible to define custom \nformatter\n and \nhandler\n for result errors.\n\n\nFormatter\n is responsible for converting instances of \nGraphQL\\Error\\Error\n \nto an array. \nHandler\n is useful for error filtering and logging. \n\n\nFor example, these are default formatter and handler:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Error\\Error;\nuse GraphQL\\Error\\FormattedError;\n\n$myErrorFormatter = function(Error $error) {\n    return FormattedError::createFromException($error);\n};\n\n$myErrorHandler = function(array $errors, callable $formatter) {\n    return array_map($formatter, $errors);\n};\n\n$result = GraphQL::executeQuery(/* $args */)\n    ->setErrorFormatter($myErrorFormatter)\n    ->setErrorsHandler($myErrorHandler)\n    ->toArray(); \n\n\n\n\nNote that when you pass \ndebug flags\n to \ntoArray()\n your custom formatter will still be \ndecorated with same debugging information mentioned above.\n\n\nSchema Errors\n\n\nSo far we only covered errors which occur during query execution process. But schema definition can \nalso throw \nGraphQL\\Error\\InvariantViolation\n if there is an error in one of type definitions.\n\n\nUsually such errors mean that there is some logical error in your schema and it is the only case \nwhen it makes sense to return \n500\n error code for GraphQL endpoint:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Type\\Schema;\nuse GraphQL\\Error\\FormattedError;\n\ntry {\n    $schema = new Schema([\n        // ...\n    ]);\n\n    $body = GraphQL::executeQuery($schema, $query);\n    $status = 200;\n} catch(\\Exception $e) {\n    $body = [\n        'errors' => [FormattedError::createFromException($e)]\n    ];\n    $status = 500;\n}\n\nheader('Content-Type: application/json', true, $status);\necho json_encode($body);",
-            "title": "Handling Errors"
-        },
-        {
-            "location": "/error-handling/#errors-in-graphql",
-            "text": "Query execution process never throws exceptions. Instead, all errors are caught and collected. \nAfter execution, they are available in  $errors  prop of  GraphQL\\Executor\\ExecutionResult .  When the result is converted to a serializable array using its  toArray()  method, all errors are \nconverted to arrays as well using default error formatting (see below).   Alternatively, you can apply  custom error filtering and formatting \nfor your specific requirements.",
-            "title": "Errors in GraphQL"
-        },
-        {
-            "location": "/error-handling/#default-error-formatting",
-            "text": "By default, each error entry is converted to an associative array with following structure:  <?php\n[\n    'message' => 'Error message',\n    'category' => 'graphql',\n    'locations' => [\n        ['line' => 1, 'column' => 2]\n    ],\n    'path' => [\n        'listField',\n        0,\n        'fieldWithException'\n    ]\n];  Entry at key  locations  points to a character in query string which caused the error.\nIn some cases (like deep fragment fields) locations will include several entries to track down \nthe path to field with the error in query.  Entry at key  path  exists only for errors caused by exceptions thrown in resolvers. \nIt contains a path from the very root field to actual field value producing an error \n(including indexes for list types and field names for composite types).   Internal errors  As of version  0.10.0 , all exceptions thrown in resolvers are reported with generic message  \"Internal server error\" .\nThis is done to avoid information leak in production environments (e.g. database connection errors, file access errors, etc).  Only exceptions implementing interface  GraphQL\\Error\\ClientAware  and claiming themselves as  safe  will \nbe reported with a full error message.  For example:  <?php\nuse GraphQL\\Error\\ClientAware;\n\nclass MySafeException extends \\Exception implements ClientAware\n{\n    public function isClientSafe()\n    {\n        return true;\n    }\n\n    public function getCategory()\n    {\n        return 'businessLogic';\n    }\n}  When such exception is thrown it will be reported with a full error message:  <?php\n[\n    'message' => 'My reported error',\n    'category' => 'businessLogic',\n    'locations' => [\n        ['line' => 10, 'column' => 2]\n    ],\n    'path' => [\n        'path',\n        'to',\n        'fieldWithException'\n    ]\n];  To change default  \"Internal server error\"  message to something else, use:   GraphQL\\Error\\FormattedError::setInternalErrorMessage(\"Unexpected error\");",
-            "title": "Default Error formatting"
-        },
-        {
-            "location": "/error-handling/#debugging-tools",
-            "text": "During development or debugging use  $result->toArray(true)  to add  debugMessage  key to \neach formatted error entry. If you also want to add exception trace - pass flags instead:  use GraphQL\\Error\\Debug;\n$debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::INCLUDE_TRACE;\n$result = GraphQL::executeQuery(/*args*/)->toArray($debug);  This will make each error entry to look like this:  <?php\n[\n    'debugMessage' => 'Actual exception message',\n    'message' => 'Internal server error',\n    'category' => 'internal',\n    'locations' => [\n        ['line' => 10, 'column' => 2]\n    ],\n    'path' => [\n        'listField',\n        0,\n        'fieldWithException'\n    ],\n    'trace' => [\n        /* Formatted original exception trace */\n    ]\n];  If you prefer first resolver exception to be re-thrown, use following flags:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Error\\Debug;\n$debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::RETHROW_INTERNAL_EXCEPTIONS;\n\n// Following will throw if there was an exception in resolver during execution:\n$result = GraphQL::executeQuery(/*args*/)->toArray($debug);",
-            "title": "Debugging tools"
-        },
-        {
-            "location": "/error-handling/#custom-error-handling-and-formatting",
-            "text": "It is possible to define custom  formatter  and  handler  for result errors.  Formatter  is responsible for converting instances of  GraphQL\\Error\\Error  \nto an array.  Handler  is useful for error filtering and logging.   For example, these are default formatter and handler:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Error\\Error;\nuse GraphQL\\Error\\FormattedError;\n\n$myErrorFormatter = function(Error $error) {\n    return FormattedError::createFromException($error);\n};\n\n$myErrorHandler = function(array $errors, callable $formatter) {\n    return array_map($formatter, $errors);\n};\n\n$result = GraphQL::executeQuery(/* $args */)\n    ->setErrorFormatter($myErrorFormatter)\n    ->setErrorsHandler($myErrorHandler)\n    ->toArray();   Note that when you pass  debug flags  to  toArray()  your custom formatter will still be \ndecorated with same debugging information mentioned above.",
-            "title": "Custom Error Handling and Formatting"
-        },
-        {
-            "location": "/error-handling/#schema-errors",
-            "text": "So far we only covered errors which occur during query execution process. But schema definition can \nalso throw  GraphQL\\Error\\InvariantViolation  if there is an error in one of type definitions.  Usually such errors mean that there is some logical error in your schema and it is the only case \nwhen it makes sense to return  500  error code for GraphQL endpoint:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Type\\Schema;\nuse GraphQL\\Error\\FormattedError;\n\ntry {\n    $schema = new Schema([\n        // ...\n    ]);\n\n    $body = GraphQL::executeQuery($schema, $query);\n    $status = 200;\n} catch(\\Exception $e) {\n    $body = [\n        'errors' => [FormattedError::createFromException($e)]\n    ];\n    $status = 500;\n}\n\nheader('Content-Type: application/json', true, $status);\necho json_encode($body);",
-            "title": "Schema Errors"
-        },
-        {
-            "location": "/security/",
-            "text": "Query Complexity Analysis\n\n\nThis is a PHP port of \nQuery Complexity Analysis\n in Sangria implementation.\n\n\nComplexity analysis is a separate validation rule which calculates query complexity score before execution.\nEvery field in the query gets a default score 1 (including ObjectType nodes). Total complexity of the \nquery is the sum of all field scores. For example, the complexity of introspection query is \n109\n.\n\n\nIf this score exceeds a threshold, a query is not executed and an error is returned instead.\n\n\nComplexity analysis is disabled by default. To enabled it, add validation rule:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\QueryComplexity;\nuse GraphQL\\Validator\\DocumentValidator;\n\n$rule = new QueryComplexity($maxQueryComplexity = 100);\nDocumentValidator::addRule($rule);\n\nGraphQL::executeQuery(/*...*/);\n\n\n\n\nThis will set the rule globally. Alternatively, you can provide validation rules \nper execution\n.\n\n\nTo customize field score add \ncomplexity\n function to field definition:\n\n\n<?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$type = new ObjectType([\n    'name' => 'MyType',\n    'fields' => [\n        'someList' => [\n            'type' => Type::listOf(Type::string()),\n            'args' => [\n                'limit' => [\n                    'type' => Type::int(),\n                    'defaultValue' => 10\n                ]\n            ],\n            'complexity' => function($childrenComplexity, $args) {\n                return $childrenComplexity * $args['limit'];\n            }\n        ]\n    ]\n]);\n\n\n\n\nLimiting Query Depth\n\n\nThis is a PHP port of \nLimiting Query Depth\n in Sangria implementation.\nFor example, max depth of the introspection query is \n7\n.\n\n\nIt is disabled by default. To enable it, add following validation rule:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\QueryDepth;\nuse GraphQL\\Validator\\DocumentValidator;\n\n$rule = new QueryDepth($maxDepth = 10);\nDocumentValidator::addRule($rule);\n\nGraphQL::executeQuery(/*...*/);\n\n\n\n\nThis will set the rule globally. Alternatively, you can provide validation rules \nper execution\n.\n\n\nDisabling Introspection\n\n\nIntrospection\n is a mechanism for fetching schema structure.\nIt is used by tools like GraphiQL for auto-completion, query validation, etc.\n\n\nIntrospection is enabled by default. It means that anybody can get a full description of your schema by \nsending a special query containing meta fields \n__type\n and \n__schema\n .\n\n\nIf you are not planning to expose your API to the general public, it makes sense to disable this feature.\n\n\nGraphQL PHP provides you separate validation rule which prohibits queries that contain \n\n__type\n or \n__schema\n fields. To disable introspection, add following rule:\n\n\n<?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\DisableIntrospection;\nuse GraphQL\\Validator\\DocumentValidator;\n\nDocumentValidator::addRule(new DisableIntrospection());\n\nGraphQL::executeQuery(/*...*/);\n\n\n\n\nThis will set the rule globally. Alternatively, you can provide validation rules \nper execution\n.",
-            "title": "Security"
-        },
-        {
-            "location": "/security/#query-complexity-analysis",
-            "text": "This is a PHP port of  Query Complexity Analysis  in Sangria implementation.  Complexity analysis is a separate validation rule which calculates query complexity score before execution.\nEvery field in the query gets a default score 1 (including ObjectType nodes). Total complexity of the \nquery is the sum of all field scores. For example, the complexity of introspection query is  109 .  If this score exceeds a threshold, a query is not executed and an error is returned instead.  Complexity analysis is disabled by default. To enabled it, add validation rule:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\QueryComplexity;\nuse GraphQL\\Validator\\DocumentValidator;\n\n$rule = new QueryComplexity($maxQueryComplexity = 100);\nDocumentValidator::addRule($rule);\n\nGraphQL::executeQuery(/*...*/);  This will set the rule globally. Alternatively, you can provide validation rules  per execution .  To customize field score add  complexity  function to field definition:  <?php\nuse GraphQL\\Type\\Definition\\Type;\nuse GraphQL\\Type\\Definition\\ObjectType;\n\n$type = new ObjectType([\n    'name' => 'MyType',\n    'fields' => [\n        'someList' => [\n            'type' => Type::listOf(Type::string()),\n            'args' => [\n                'limit' => [\n                    'type' => Type::int(),\n                    'defaultValue' => 10\n                ]\n            ],\n            'complexity' => function($childrenComplexity, $args) {\n                return $childrenComplexity * $args['limit'];\n            }\n        ]\n    ]\n]);",
-            "title": "Query Complexity Analysis"
-        },
-        {
-            "location": "/security/#limiting-query-depth",
-            "text": "This is a PHP port of  Limiting Query Depth  in Sangria implementation.\nFor example, max depth of the introspection query is  7 .  It is disabled by default. To enable it, add following validation rule:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\QueryDepth;\nuse GraphQL\\Validator\\DocumentValidator;\n\n$rule = new QueryDepth($maxDepth = 10);\nDocumentValidator::addRule($rule);\n\nGraphQL::executeQuery(/*...*/);  This will set the rule globally. Alternatively, you can provide validation rules  per execution .",
-            "title": "Limiting Query Depth"
-        },
-        {
-            "location": "/security/#disabling-introspection",
-            "text": "Introspection  is a mechanism for fetching schema structure.\nIt is used by tools like GraphiQL for auto-completion, query validation, etc.  Introspection is enabled by default. It means that anybody can get a full description of your schema by \nsending a special query containing meta fields  __type  and  __schema  .  If you are not planning to expose your API to the general public, it makes sense to disable this feature.  GraphQL PHP provides you separate validation rule which prohibits queries that contain  __type  or  __schema  fields. To disable introspection, add following rule:  <?php\nuse GraphQL\\GraphQL;\nuse GraphQL\\Validator\\Rules\\DisableIntrospection;\nuse GraphQL\\Validator\\DocumentValidator;\n\nDocumentValidator::addRule(new DisableIntrospection());\n\nGraphQL::executeQuery(/*...*/);  This will set the rule globally. Alternatively, you can provide validation rules  per execution .",
-            "title": "Disabling Introspection"
-        },
-        {
-            "location": "/how-it-works/",
-            "text": "Overview\n\n\nFollowing reading describes implementation details of query execution process. It may clarify some \ninternals of GraphQL runtime but is not required to use it.\n\n\nParsing\n\n\nTODOC\n\n\nValidating\n\n\nTODOC\n\n\nExecuting\n\n\nTODOC\n\n\nErrors explained\n\n\nThere are 3 types of errors in GraphQL:\n\n\n\n\nSyntax\n: query has invalid syntax and could not be parsed;\n\n\nValidation\n: query is incompatible with type system (e.g. unknown field is requested);\n\n\nExecution\n: occurs when some field resolver throws (or returns unexpected value).\n\n\n\n\nObviously, when \nSyntax\n or \nValidation\n error is detected - the process is interrupted and \nthe query is not executed.\n\n\nExecution process never throws exceptions. Instead, all errors are caught and collected in \nexecution result.\n\n\nGraphQL is forgiving to \nExecution\n errors which occur in resolvers of nullable fields. \nIf such field throws or returns unexpected value the value of the field in response will be simply \nreplaced with \nnull\n and error entry will be registered.\n\n\nIf an exception is thrown in the non-null field - error bubbles up to the first nullable field. \nThis nullable field is replaced with \nnull\n and error entry is added to the result. \nIf all fields up to the root are non-null - \ndata\n entry will be removed from the result\n\nand only \nerrors\n key will be presented.",
-            "title": "How it works"
-        },
-        {
-            "location": "/how-it-works/#overview",
-            "text": "Following reading describes implementation details of query execution process. It may clarify some \ninternals of GraphQL runtime but is not required to use it.",
-            "title": "Overview"
-        },
-        {
-            "location": "/how-it-works/#parsing",
-            "text": "TODOC",
-            "title": "Parsing"
-        },
-        {
-            "location": "/how-it-works/#validating",
-            "text": "TODOC",
-            "title": "Validating"
-        },
-        {
-            "location": "/how-it-works/#executing",
-            "text": "TODOC",
-            "title": "Executing"
-        },
-        {
-            "location": "/how-it-works/#errors-explained",
-            "text": "There are 3 types of errors in GraphQL:   Syntax : query has invalid syntax and could not be parsed;  Validation : query is incompatible with type system (e.g. unknown field is requested);  Execution : occurs when some field resolver throws (or returns unexpected value).   Obviously, when  Syntax  or  Validation  error is detected - the process is interrupted and \nthe query is not executed.  Execution process never throws exceptions. Instead, all errors are caught and collected in \nexecution result.  GraphQL is forgiving to  Execution  errors which occur in resolvers of nullable fields. \nIf such field throws or returns unexpected value the value of the field in response will be simply \nreplaced with  null  and error entry will be registered.  If an exception is thrown in the non-null field - error bubbles up to the first nullable field. \nThis nullable field is replaced with  null  and error entry is added to the result. \nIf all fields up to the root are non-null -  data  entry will be removed from the result \nand only  errors  key will be presented.",
-            "title": "Errors explained"
-        },
-        {
-            "location": "/reference/",
-            "text": "GraphQL\\GraphQL\n\n\nThis is the primary facade for fulfilling GraphQL operations.\nSee \nrelated documentation\n.\n\n\nClass Methods:\n \n\n\n/**\n * Executes graphql query.\n *\n * More sophisticated GraphQL servers, such as those which persist queries,\n * may wish to separate the validation and execution phases to a static time\n * tooling step, and a server runtime step.\n *\n * Available options:\n *\n * schema:\n *    The GraphQL type system to use when validating and executing a query.\n * source:\n *    A GraphQL language formatted string representing the requested operation.\n * rootValue:\n *    The value provided as the first argument to resolver functions on the top\n *    level type (e.g. the query object type).\n * context:\n *    The value provided as the third argument to all resolvers.\n *    Use this to pass current session, user data, etc\n * variableValues:\n *    A mapping of variable name to runtime value to use for all variables\n *    defined in the requestString.\n * operationName:\n *    The name of the operation to use if requestString contains multiple\n *    possible operations. Can be omitted if requestString contains only\n *    one operation.\n * fieldResolver:\n *    A resolver function to use when one is not provided by the schema.\n *    If not provided, the default field resolver is used (which looks for a\n *    value on the source value with the field's name).\n * validationRules:\n *    A set of rules for query validation step. Default value is all available rules.\n *    Empty array would allow to skip query validation (may be convenient for persisted\n *    queries which are validated before persisting and assumed valid during execution)\n *\n * @api\n * @param \\GraphQL\\Type\\Schema $schema\n * @param string|DocumentNode $source\n * @param mixed $rootValue\n * @param mixed $context\n * @param array|null $variableValues\n * @param string|null $operationName\n * @param callable $fieldResolver\n * @param array $validationRules\n *\n * @return ExecutionResult\n */\nstatic function executeQuery(\n    GraphQL\\Type\\Schema $schema,\n    $source,\n    $rootValue = null,\n    $context = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null,\n    array $validationRules = null\n)\n\n\n\n\n/**\n * Same as executeQuery(), but requires PromiseAdapter and always returns a Promise.\n * Useful for Async PHP platforms.\n *\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @param \\GraphQL\\Type\\Schema $schema\n * @param string|DocumentNode $source\n * @param mixed $rootValue\n * @param mixed $context\n * @param array|null $variableValues\n * @param string|null $operationName\n * @param callable $fieldResolver\n * @param array $validationRules\n *\n * @return Promise\n */\nstatic function promiseToExecute(\n    GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter,\n    GraphQL\\Type\\Schema $schema,\n    $source,\n    $rootValue = null,\n    $context = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null,\n    array $validationRules = null\n)\n\n\n\n\n/**\n * Returns directives defined in GraphQL spec\n *\n * @api\n * @return Directive[]\n */\nstatic function getStandardDirectives()\n\n\n\n\n/**\n * Returns types defined in GraphQL spec\n *\n * @api\n * @return Type[]\n */\nstatic function getStandardTypes()\n\n\n\n\n/**\n * Returns standard validation rules implementing GraphQL spec\n *\n * @api\n * @return AbstractValidationRule[]\n */\nstatic function getStandardValidationRules()\n\n\n\n\nGraphQL\\Type\\Definition\\Type\n\n\nRegistry of standard GraphQL types\nand a base class for all other types.\n\n\nClass Methods:\n \n\n\n/**\n * @api\n * @return IDType\n */\nstatic function id()\n\n\n\n\n/**\n * @api\n * @return StringType\n */\nstatic function string()\n\n\n\n\n/**\n * @api\n * @return BooleanType\n */\nstatic function boolean()\n\n\n\n\n/**\n * @api\n * @return IntType\n */\nstatic function int()\n\n\n\n\n/**\n * @api\n * @return FloatType\n */\nstatic function float()\n\n\n\n\n/**\n * @api\n * @param Type|ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType|NonNull $wrappedType\n * @return ListOfType\n */\nstatic function listOf($wrappedType)\n\n\n\n\n/**\n * @api\n * @param ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType $wrappedType\n * @return NonNull\n */\nstatic function nonNull($wrappedType)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isInputType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isOutputType($type)\n\n\n\n\n/**\n * @api\n * @param $type\n * @return bool\n */\nstatic function isLeafType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isCompositeType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isAbstractType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType\n */\nstatic function getNullableType($type)\n\n\n\n\n/**\n * @api\n * @param Type $type\n * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType\n */\nstatic function getNamedType($type)\n\n\n\n\nGraphQL\\Type\\Definition\\ResolveInfo\n\n\nStructure containing information useful for field resolution process.\nPassed as 3rd argument to every field resolver. See \ndocs on field resolving (data fetching)\n.\n\n\nClass Props:\n \n\n\n/**\n * The name of the field being resolved\n *\n * @api\n * @var string\n */\npublic $fieldName;\n\n/**\n * AST of all nodes referencing this field in the query.\n *\n * @api\n * @var FieldNode[]\n */\npublic $fieldNodes;\n\n/**\n * Expected return type of the field being resolved\n *\n * @api\n * @var ScalarType|ObjectType|InterfaceType|UnionType|EnumType|ListOfType|NonNull\n */\npublic $returnType;\n\n/**\n * Parent type of the field being resolved\n *\n * @api\n * @var ObjectType\n */\npublic $parentType;\n\n/**\n * Path to this field from the very root value\n *\n * @api\n * @var array\n */\npublic $path;\n\n/**\n * Instance of a schema used for execution\n *\n * @api\n * @var Schema\n */\npublic $schema;\n\n/**\n * AST of all fragments defined in query\n *\n * @api\n * @var FragmentDefinitionNode[]\n */\npublic $fragments;\n\n/**\n * Root value passed to query execution\n *\n * @api\n * @var mixed\n */\npublic $rootValue;\n\n/**\n * AST of operation definition node (query, mutation)\n *\n * @api\n * @var OperationDefinitionNode\n */\npublic $operation;\n\n/**\n * Array of variables passed to query execution\n *\n * @api\n * @var array\n */\npublic $variableValues;\n\n\n\n\nClass Methods:\n \n\n\n/**\n * Helper method that returns names of all fields selected in query for\n * $this->fieldName up to $depth levels\n *\n * Example:\n * query MyQuery{\n * {\n *   root {\n *     id,\n *     nested {\n *      nested1\n *      nested2 {\n *        nested3\n *      }\n *     }\n *   }\n * }\n *\n * Given this ResolveInfo instance is a part of \"root\" field resolution, and $depth === 1,\n * method will return:\n * [\n *     'id' => true,\n *     'nested' => [\n *         nested1 => true,\n *         nested2 => true\n *     ]\n * ]\n *\n * Warning: this method it is a naive implementation which does not take into account\n * conditional typed fragments. So use it with care for fields of interface and union types.\n *\n * @api\n * @param int $depth How many levels to include in output\n * @return array\n */\nfunction getFieldSelection($depth = 0)\n\n\n\n\nGraphQL\\Language\\DirectiveLocation\n\n\nList of available directive locations\n\n\nClass Constants:\n \n\n\nconst QUERY = \"QUERY\";\nconst MUTATION = \"MUTATION\";\nconst SUBSCRIPTION = \"SUBSCRIPTION\";\nconst FIELD = \"FIELD\";\nconst FRAGMENT_DEFINITION = \"FRAGMENT_DEFINITION\";\nconst FRAGMENT_SPREAD = \"FRAGMENT_SPREAD\";\nconst INLINE_FRAGMENT = \"INLINE_FRAGMENT\";\nconst SCHEMA = \"SCHEMA\";\nconst SCALAR = \"SCALAR\";\nconst OBJECT = \"OBJECT\";\nconst FIELD_DEFINITION = \"FIELD_DEFINITION\";\nconst ARGUMENT_DEFINITION = \"ARGUMENT_DEFINITION\";\nconst IFACE = \"INTERFACE\";\nconst UNION = \"UNION\";\nconst ENUM = \"ENUM\";\nconst ENUM_VALUE = \"ENUM_VALUE\";\nconst INPUT_OBJECT = \"INPUT_OBJECT\";\nconst INPUT_FIELD_DEFINITION = \"INPUT_FIELD_DEFINITION\";\n\n\n\n\nGraphQL\\Type\\SchemaConfig\n\n\nSchema configuration class.\nCould be passed directly to schema constructor. List of options accepted by \ncreate\n method is\n\ndescribed in docs\n.\n\n\nUsage example:\n\n\n$config = SchemaConfig::create()\n    ->setQuery($myQueryType)\n    ->setTypeLoader($myTypeLoader);\n\n$schema = new Schema($config);\n\n\n\nClass Methods:\n \n\n\n/**\n * Converts an array of options to instance of SchemaConfig\n * (or just returns empty config when array is not passed).\n *\n * @api\n * @param array $options\n * @return SchemaConfig\n */\nstatic function create(array $options = [])\n\n\n\n\n/**\n * @api\n * @param ObjectType $query\n * @return SchemaConfig\n */\nfunction setQuery($query)\n\n\n\n\n/**\n * @api\n * @param ObjectType $mutation\n * @return SchemaConfig\n */\nfunction setMutation($mutation)\n\n\n\n\n/**\n * @api\n * @param ObjectType $subscription\n * @return SchemaConfig\n */\nfunction setSubscription($subscription)\n\n\n\n\n/**\n * @api\n * @param Type[]|callable $types\n * @return SchemaConfig\n */\nfunction setTypes($types)\n\n\n\n\n/**\n * @api\n * @param Directive[] $directives\n * @return SchemaConfig\n */\nfunction setDirectives(array $directives)\n\n\n\n\n/**\n * @api\n * @param callable $typeLoader\n * @return SchemaConfig\n */\nfunction setTypeLoader(callable $typeLoader)\n\n\n\n\n/**\n * @api\n * @return ObjectType\n */\nfunction getQuery()\n\n\n\n\n/**\n * @api\n * @return ObjectType\n */\nfunction getMutation()\n\n\n\n\n/**\n * @api\n * @return ObjectType\n */\nfunction getSubscription()\n\n\n\n\n/**\n * @api\n * @return Type[]\n */\nfunction getTypes()\n\n\n\n\n/**\n * @api\n * @return Directive[]\n */\nfunction getDirectives()\n\n\n\n\n/**\n * @api\n * @return callable\n */\nfunction getTypeLoader()\n\n\n\n\nGraphQL\\Type\\Schema\n\n\nSchema Definition (see \nrelated docs\n)\n\n\nA Schema is created by supplying the root types of each type of operation:\nquery, mutation (optional) and subscription (optional). A schema definition is\nthen supplied to the validator and executor. Usage Example:\n\n\n$schema = new GraphQL\\Type\\Schema([\n  'query' => $MyAppQueryRootType,\n  'mutation' => $MyAppMutationRootType,\n]);\n\n\n\nOr using Schema Config instance:\n\n\n$config = GraphQL\\Type\\SchemaConfig::create()\n    ->setQuery($MyAppQueryRootType)\n    ->setMutation($MyAppMutationRootType);\n\n$schema = new GraphQL\\Type\\Schema($config);\n\n\n\nClass Methods:\n \n\n\n/**\n * Schema constructor.\n *\n * @api\n * @param array|SchemaConfig $config\n */\nfunction __construct($config)\n\n\n\n\n/**\n * Returns schema query type\n *\n * @api\n * @return ObjectType\n */\nfunction getQueryType()\n\n\n\n\n/**\n * Returns schema mutation type\n *\n * @api\n * @return ObjectType|null\n */\nfunction getMutationType()\n\n\n\n\n/**\n * Returns schema subscription\n *\n * @api\n * @return ObjectType|null\n */\nfunction getSubscriptionType()\n\n\n\n\n/**\n * @api\n * @return SchemaConfig\n */\nfunction getConfig()\n\n\n\n\n/**\n * Returns array of all types in this schema. Keys of this array represent type names, values are instances\n * of corresponding type definitions\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @return Type[]\n */\nfunction getTypeMap()\n\n\n\n\n/**\n * Returns type by it's name\n *\n * @api\n * @param string $name\n * @return Type\n */\nfunction getType($name)\n\n\n\n\n/**\n * Returns all possible concrete types for given abstract type\n * (implementations for interfaces and members of union type for unions)\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @param AbstractType $abstractType\n * @return ObjectType[]\n */\nfunction getPossibleTypes(GraphQL\\Type\\Definition\\AbstractType $abstractType)\n\n\n\n\n/**\n * Returns true if object type is concrete type of given abstract type\n * (implementation for interfaces and members of union type for unions)\n *\n * @api\n * @param AbstractType $abstractType\n * @param ObjectType $possibleType\n * @return bool\n */\nfunction isPossibleType(\n    GraphQL\\Type\\Definition\\AbstractType $abstractType,\n    GraphQL\\Type\\Definition\\ObjectType $possibleType\n)\n\n\n\n\n/**\n * Returns a list of directives supported by this schema\n *\n * @api\n * @return Directive[]\n */\nfunction getDirectives()\n\n\n\n\n/**\n * Returns instance of directive by name\n *\n * @api\n * @param $name\n * @return Directive\n */\nfunction getDirective($name)\n\n\n\n\n/**\n * Validates schema.\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @return InvariantViolation[]|Error[]\n */\nfunction validate()\n\n\n\n\n/**\n * Validates schema.\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @throws InvariantViolation\n */\nfunction assertValid()\n\n\n\n\nGraphQL\\Language\\Parser\n\n\nParses string containing GraphQL query or \ntype definition\n to Abstract Syntax Tree.\n\n\nClass Methods:\n \n\n\n/**\n * Given a GraphQL source, parses it into a `GraphQL\\Language\\AST\\DocumentNode`.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * Available options:\n *\n * noLocation: boolean,\n * (By default, the parser creates AST nodes that know the location\n * in the source that they correspond to. This configuration flag\n * disables that behavior for performance or testing.)\n *\n * experimentalFragmentVariables: boolean,\n * (If enabled, the parser will understand and parse variable definitions\n * contained in a fragment definition. They'll be represented in the\n * `variableDefinitions` field of the FragmentDefinitionNode.\n *\n * The syntax is identical to normal, query-defined variables. For example:\n *\n *   fragment A($var: Boolean = false) on T  {\n *     ...\n *   }\n *\n * Note: this feature is experimental and may change or be removed in the\n * future.)\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return DocumentNode\n * @throws SyntaxError\n */\nstatic function parse($source, array $options = [])\n\n\n\n\n/**\n * Given a string containing a GraphQL value (ex. `[42]`), parse the AST for\n * that value.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * This is useful within tools that operate upon GraphQL Values directly and\n * in isolation of complete GraphQL documents.\n *\n * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::valueFromAST()`.\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode\n */\nstatic function parseValue($source, array $options = [])\n\n\n\n\n/**\n * Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for\n * that type.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * This is useful within tools that operate upon GraphQL Types directly and\n * in isolation of complete GraphQL documents.\n *\n * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::typeFromAST()`.\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return ListTypeNode|NameNode|NonNullTypeNode\n */\nstatic function parseType($source, array $options = [])\n\n\n\n\nGraphQL\\Language\\Printer\n\n\nPrints AST to string. Capable of printing GraphQL queries and Type definition language.\nUseful for pretty-printing queries or printing back AST for logging, documentation, etc.\n\n\nUsage example:\n\n\n$query = 'query myQuery {someField}';\n$ast = GraphQL\\Language\\Parser::parse($query);\n$printed = GraphQL\\Language\\Printer::doPrint($ast);\n\n\n\n\nClass Methods:\n \n\n\n/**\n * Prints AST to string. Capable of printing GraphQL queries and Type definition language.\n *\n * @api\n * @param Node $ast\n * @return string\n */\nstatic function doPrint($ast)\n\n\n\n\nGraphQL\\Language\\Visitor\n\n\nUtility for efficient AST traversal and modification.\n\n\nvisit()\n will walk through an AST using a depth first traversal, calling\nthe visitor's enter function at each node in the traversal, and calling the\nleave function after visiting that node and all of it's child nodes.\n\n\nBy returning different values from the enter and leave functions, the\nbehavior of the visitor can be altered, including skipping over a sub-tree of\nthe AST (by returning false), editing the AST by returning a value or null\nto remove the value, or to stop the whole traversal by returning BREAK.\n\n\nWhen using \nvisit()\n to edit an AST, the original AST will not be modified, and\na new version of the AST with the changes applied will be returned from the\nvisit function.\n\n\n$editedAST = Visitor::visit($ast, [\n  'enter' => function ($node, $key, $parent, $path, $ancestors) {\n    // return\n    //   null: no action\n    //   Visitor::skipNode(): skip visiting this node\n    //   Visitor::stop(): stop visiting altogether\n    //   Visitor::removeNode(): delete this node\n    //   any value: replace this node with the returned value\n  },\n  'leave' => function ($node, $key, $parent, $path, $ancestors) {\n    // return\n    //   null: no action\n    //   Visitor::stop(): stop visiting altogether\n    //   Visitor::removeNode(): delete this node\n    //   any value: replace this node with the returned value\n  }\n]);\n\n\n\nAlternatively to providing enter() and leave() functions, a visitor can\ninstead provide functions named the same as the \nkinds of AST nodes\n,\nor enter/leave visitors at a named key, leading to four permutations of\nvisitor API:\n\n\n1) Named visitors triggered when entering a node a specific kind.\n\n\nVisitor::visit($ast, [\n  'Kind' => function ($node) {\n    // enter the \"Kind\" node\n  }\n]);\n\n\n\n2) Named visitors that trigger upon entering and leaving a node of\n   a specific kind.\n\n\nVisitor::visit($ast, [\n  'Kind' => [\n    'enter' => function ($node) {\n      // enter the \"Kind\" node\n    }\n    'leave' => function ($node) {\n      // leave the \"Kind\" node\n    }\n  ]\n]);\n\n\n\n3) Generic visitors that trigger upon entering and leaving any node.\n\n\nVisitor::visit($ast, [\n  'enter' => function ($node) {\n    // enter any node\n  },\n  'leave' => function ($node) {\n    // leave any node\n  }\n]);\n\n\n\n4) Parallel visitors for entering and leaving nodes of a specific kind.\n\n\nVisitor::visit($ast, [\n  'enter' => [\n    'Kind' => function($node) {\n      // enter the \"Kind\" node\n    }\n  },\n  'leave' => [\n    'Kind' => function ($node) {\n      // leave the \"Kind\" node\n    }\n  ]\n]);\n\n\n\nClass Methods:\n \n\n\n/**\n * Visit the AST (see class description for details)\n *\n * @api\n * @param Node $root\n * @param array $visitor\n * @param array $keyMap\n * @return Node|mixed\n * @throws \\Exception\n */\nstatic function visit($root, $visitor, $keyMap = null)\n\n\n\n\n/**\n * Returns marker for visitor break\n *\n * @api\n * @return VisitorOperation\n */\nstatic function stop()\n\n\n\n\n/**\n * Returns marker for skipping current node\n *\n * @api\n * @return VisitorOperation\n */\nstatic function skipNode()\n\n\n\n\n/**\n * Returns marker for removing a node\n *\n * @api\n * @return VisitorOperation\n */\nstatic function removeNode()\n\n\n\n\nGraphQL\\Language\\AST\\NodeKind\n\n\nClass Constants:\n \n\n\nconst NAME = \"Name\";\nconst DOCUMENT = \"Document\";\nconst OPERATION_DEFINITION = \"OperationDefinition\";\nconst VARIABLE_DEFINITION = \"VariableDefinition\";\nconst VARIABLE = \"Variable\";\nconst SELECTION_SET = \"SelectionSet\";\nconst FIELD = \"Field\";\nconst ARGUMENT = \"Argument\";\nconst FRAGMENT_SPREAD = \"FragmentSpread\";\nconst INLINE_FRAGMENT = \"InlineFragment\";\nconst FRAGMENT_DEFINITION = \"FragmentDefinition\";\nconst INT = \"IntValue\";\nconst FLOAT = \"FloatValue\";\nconst STRING = \"StringValue\";\nconst BOOLEAN = \"BooleanValue\";\nconst ENUM = \"EnumValue\";\nconst NULL = \"NullValue\";\nconst LST = \"ListValue\";\nconst OBJECT = \"ObjectValue\";\nconst OBJECT_FIELD = \"ObjectField\";\nconst DIRECTIVE = \"Directive\";\nconst NAMED_TYPE = \"NamedType\";\nconst LIST_TYPE = \"ListType\";\nconst NON_NULL_TYPE = \"NonNullType\";\nconst SCHEMA_DEFINITION = \"SchemaDefinition\";\nconst OPERATION_TYPE_DEFINITION = \"OperationTypeDefinition\";\nconst SCALAR_TYPE_DEFINITION = \"ScalarTypeDefinition\";\nconst OBJECT_TYPE_DEFINITION = \"ObjectTypeDefinition\";\nconst FIELD_DEFINITION = \"FieldDefinition\";\nconst INPUT_VALUE_DEFINITION = \"InputValueDefinition\";\nconst INTERFACE_TYPE_DEFINITION = \"InterfaceTypeDefinition\";\nconst UNION_TYPE_DEFINITION = \"UnionTypeDefinition\";\nconst ENUM_TYPE_DEFINITION = \"EnumTypeDefinition\";\nconst ENUM_VALUE_DEFINITION = \"EnumValueDefinition\";\nconst INPUT_OBJECT_TYPE_DEFINITION = \"InputObjectTypeDefinition\";\nconst SCALAR_TYPE_EXTENSION = \"ScalarTypeExtension\";\nconst OBJECT_TYPE_EXTENSION = \"ObjectTypeExtension\";\nconst INTERFACE_TYPE_EXTENSION = \"InterfaceTypeExtension\";\nconst UNION_TYPE_EXTENSION = \"UnionTypeExtension\";\nconst ENUM_TYPE_EXTENSION = \"EnumTypeExtension\";\nconst INPUT_OBJECT_TYPE_EXTENSION = \"InputObjectTypeExtension\";\nconst DIRECTIVE_DEFINITION = \"DirectiveDefinition\";\n\n\n\n\nGraphQL\\Executor\\Executor\n\n\nImplements the \"Evaluating requests\" section of the GraphQL specification.\n\n\nClass Methods:\n \n\n\n/**\n * Executes DocumentNode against given $schema.\n *\n * Always returns ExecutionResult and never throws. All errors which occur during operation\n * execution are collected in `$result->errors`.\n *\n * @api\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param $rootValue\n * @param $contextValue\n * @param array|\\ArrayAccess $variableValues\n * @param null $operationName\n * @param callable $fieldResolver\n *\n * @return ExecutionResult|Promise\n */\nstatic function execute(\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    $rootValue = null,\n    $contextValue = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null\n)\n\n\n\n\n/**\n * Same as execute(), but requires promise adapter and returns a promise which is always\n * fulfilled with an instance of ExecutionResult and never rejected.\n *\n * Useful for async PHP platforms.\n *\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param null $rootValue\n * @param null $contextValue\n * @param null $variableValues\n * @param null $operationName\n * @param callable|null $fieldResolver\n * @return Promise\n */\nstatic function promiseToExecute(\n    GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter,\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    $rootValue = null,\n    $contextValue = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null\n)\n\n\n\n\nGraphQL\\Executor\\ExecutionResult\n\n\nReturned after \nquery execution\n.\nRepresents both - result of successful execution and of a failed one\n(with errors collected in \nerrors\n prop)\n\n\nCould be converted to \nspec-compliant\n\nserializable array using \ntoArray()\n\n\nClass Props:\n \n\n\n/**\n * Data collected from resolvers during query execution\n *\n * @api\n * @var array\n */\npublic $data;\n\n/**\n * Errors registered during query execution.\n *\n * If an error was caused by exception thrown in resolver, $error->getPrevious() would\n * contain original exception.\n *\n * @api\n * @var \\GraphQL\\Error\\Error[]\n */\npublic $errors;\n\n/**\n * User-defined serializable array of extensions included in serialized result.\n * Conforms to\n *\n * @api\n * @var array\n */\npublic $extensions;\n\n\n\n\nClass Methods:\n \n\n\n/**\n * Define custom error formatting (must conform to http://facebook.github.io/graphql/#sec-Errors)\n *\n * Expected signature is: function (GraphQL\\Error\\Error $error): array\n *\n * Default formatter is \"GraphQL\\Error\\FormattedError::createFromException\"\n *\n * Expected returned value must be an array:\n * array(\n *    'message' => 'errorMessage',\n *    // ... other keys\n * );\n *\n * @api\n * @param callable $errorFormatter\n * @return $this\n */\nfunction setErrorFormatter(callable $errorFormatter)\n\n\n\n\n/**\n * Define custom logic for error handling (filtering, logging, etc).\n *\n * Expected handler signature is: function (array $errors, callable $formatter): array\n *\n * Default handler is:\n * function (array $errors, callable $formatter) {\n *     return array_map($formatter, $errors);\n * }\n *\n * @api\n * @param callable $handler\n * @return $this\n */\nfunction setErrorsHandler(callable $handler)\n\n\n\n\n/**\n * Converts GraphQL query result to spec-compliant serializable array using provided\n * errors handler and formatter.\n *\n * If debug argument is passed, output of error formatter is enriched which debugging information\n * (\"debugMessage\", \"trace\" keys depending on flags).\n *\n * $debug argument must be either bool (only adds \"debugMessage\" to result) or sum of flags from\n * GraphQL\\Error\\Debug\n *\n * @api\n * @param bool|int $debug\n * @return array\n */\nfunction toArray($debug = false)\n\n\n\n\nGraphQL\\Executor\\Promise\\PromiseAdapter\n\n\nProvides a means for integration of async PHP platforms (\nrelated docs\n)\n\n\nInterface Methods:\n \n\n\n/**\n * Return true if the value is a promise or a deferred of the underlying platform\n *\n * @api\n * @param mixed $value\n * @return bool\n */\nfunction isThenable($value)\n\n\n\n\n/**\n * Converts thenable of the underlying platform into GraphQL\\Executor\\Promise\\Promise instance\n *\n * @api\n * @param object $thenable\n * @return Promise\n */\nfunction convertThenable($thenable)\n\n\n\n\n/**\n * Accepts our Promise wrapper, extracts adopted promise out of it and executes actual `then` logic described\n * in Promises/A+ specs. Then returns new wrapped instance of GraphQL\\Executor\\Promise\\Promise.\n *\n * @api\n * @param Promise $promise\n * @param callable|null $onFulfilled\n * @param callable|null $onRejected\n *\n * @return Promise\n */\nfunction then(\n    GraphQL\\Executor\\Promise\\Promise $promise,\n    callable $onFulfilled = null,\n    callable $onRejected = null\n)\n\n\n\n\n/**\n * Creates a Promise\n *\n * Expected resolver signature:\n *     function(callable $resolve, callable $reject)\n *\n * @api\n * @param callable $resolver\n * @return Promise\n */\nfunction create(callable $resolver)\n\n\n\n\n/**\n * Creates a fulfilled Promise for a value if the value is not a promise.\n *\n * @api\n * @param mixed $value\n * @return Promise\n */\nfunction createFulfilled($value = null)\n\n\n\n\n/**\n * Creates a rejected promise for a reason if the reason is not a promise. If\n * the provided reason is a promise, then it is returned as-is.\n *\n * @api\n * @param \\Throwable $reason\n * @return Promise\n */\nfunction createRejected($reason)\n\n\n\n\n/**\n * Given an array of promises (or values), returns a promise that is fulfilled when all the\n * items in the array are fulfilled.\n *\n * @api\n * @param array $promisesOrValues Promises or values.\n * @return Promise\n */\nfunction all(array $promisesOrValues)\n\n\n\n\nGraphQL\\Validator\\DocumentValidator\n\n\nImplements the \"Validation\" section of the spec.\n\n\nValidation runs synchronously, returning an array of encountered errors, or\nan empty array if no errors were encountered and the document is valid.\n\n\nA list of specific validation rules may be provided. If not provided, the\ndefault list of rules defined by the GraphQL specification will be used.\n\n\nEach validation rule is an instance of GraphQL\\Validator\\Rules\\AbstractValidationRule\nwhich returns a visitor (see the \nGraphQL\\Language\\Visitor API\n).\n\n\nVisitor methods are expected to return an instance of \nGraphQL\\Error\\Error\n,\nor array of such instances when invalid.\n\n\nOptionally a custom TypeInfo instance may be provided. If not provided, one\nwill be created from the provided schema.\n\n\nClass Methods:\n \n\n\n/**\n * Primary method for query validation. See class description for details.\n *\n * @api\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param AbstractValidationRule[]|null $rules\n * @param TypeInfo|null $typeInfo\n * @return Error[]\n */\nstatic function validate(\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    array $rules = null,\n    GraphQL\\Utils\\TypeInfo $typeInfo = null\n)\n\n\n\n\n/**\n * Returns all global validation rules.\n *\n * @api\n * @return AbstractValidationRule[]\n */\nstatic function allRules()\n\n\n\n\n/**\n * Returns global validation rule by name. Standard rules are named by class name, so\n * example usage for such rules:\n *\n * $rule = DocumentValidator::getRule(GraphQL\\Validator\\Rules\\QueryComplexity::class);\n *\n * @api\n * @param string $name\n * @return AbstractValidationRule\n */\nstatic function getRule($name)\n\n\n\n\n/**\n * Add rule to list of global validation rules\n *\n * @api\n * @param AbstractValidationRule $rule\n */\nstatic function addRule(GraphQL\\Validator\\Rules\\AbstractValidationRule $rule)\n\n\n\n\nGraphQL\\Error\\Error\n\n\nDescribes an Error found during the parse, validate, or\nexecute phases of performing a GraphQL operation. In addition to a message\nand stack trace, it also includes information about the locations in a\nGraphQL document and/or execution result that correspond to the Error.\n\n\nWhen the error was caused by an exception thrown in resolver, original exception\nis available via \ngetPrevious()\n.\n\n\nAlso read related docs on \nerror handling\n\n\nClass extends standard PHP \n\\Exception\n, so all standard methods of base \n\\Exception\n class\nare available in addition to those listed below.\n\n\nClass Constants:\n \n\n\nconst CATEGORY_GRAPHQL = \"graphql\";\nconst CATEGORY_INTERNAL = \"internal\";\n\n\n\n\nClass Methods:\n \n\n\n/**\n * An array of locations within the source GraphQL document which correspond to this error.\n *\n * Each entry has information about `line` and `column` within source GraphQL document:\n * $location->line;\n * $location->column;\n *\n * Errors during validation often contain multiple locations, for example to\n * point out to field mentioned in multiple fragments. Errors during execution include a\n * single location, the field which produced the error.\n *\n * @api\n * @return SourceLocation[]\n */\nfunction getLocations()\n\n\n\n\n/**\n * Returns an array describing the path from the root value to the field which produced this error.\n * Only included for execution errors.\n *\n * @api\n * @return array|null\n */\nfunction getPath()\n\n\n\n\nGraphQL\\Error\\Warning\n\n\nEncapsulates warnings produced by the library.\n\n\nWarnings can be suppressed (individually or all) if required.\nAlso it is possible to override warning handler (which is \ntrigger_error()\n by default)\n\n\nClass Constants:\n \n\n\nconst WARNING_ASSIGN = 2;\nconst WARNING_CONFIG = 4;\nconst WARNING_FULL_SCHEMA_SCAN = 8;\nconst WARNING_CONFIG_DEPRECATION = 16;\nconst WARNING_NOT_A_TYPE = 32;\nconst ALL = 63;\n\n\n\n\nClass Methods:\n \n\n\n/**\n * Sets warning handler which can intercept all system warnings.\n * When not set, trigger_error() is used to notify about warnings.\n *\n * @api\n * @param callable|null $warningHandler\n */\nstatic function setWarningHandler(callable $warningHandler = null)\n\n\n\n\n/**\n * Suppress warning by id (has no effect when custom warning handler is set)\n *\n * Usage example:\n * Warning::suppress(Warning::WARNING_NOT_A_TYPE)\n *\n * When passing true - suppresses all warnings.\n *\n * @api\n * @param bool|int $suppress\n */\nstatic function suppress($suppress = true)\n\n\n\n\n/**\n * Re-enable previously suppressed warning by id\n *\n * Usage example:\n * Warning::suppress(Warning::WARNING_NOT_A_TYPE)\n *\n * When passing true - re-enables all warnings.\n *\n * @api\n * @param bool|int $enable\n */\nstatic function enable($enable = true)\n\n\n\n\nGraphQL\\Error\\ClientAware\n\n\nThis interface is used for \ndefault error formatting\n.\n\n\nOnly errors implementing this interface (and returning true from \nisClientSafe()\n)\nwill be formatted with original error message.\n\n\nAll other errors will be formatted with generic \"Internal server error\".\n\n\nInterface Methods:\n \n\n\n/**\n * Returns true when exception message is safe to be displayed to a client.\n *\n * @api\n * @return bool\n */\nfunction isClientSafe()\n\n\n\n\n/**\n * Returns string describing a category of the error.\n *\n * Value \"graphql\" is reserved for errors produced by query parsing or validation, do not use it.\n *\n * @api\n * @return string\n */\nfunction getCategory()\n\n\n\n\nGraphQL\\Error\\Debug\n\n\nCollection of flags for \nerror debugging\n.\n\n\nClass Constants:\n \n\n\nconst INCLUDE_DEBUG_MESSAGE = 1;\nconst INCLUDE_TRACE = 2;\nconst RETHROW_INTERNAL_EXCEPTIONS = 4;\n\n\n\n\nGraphQL\\Error\\FormattedError\n\n\nThis class is used for \ndefault error formatting\n.\nIt converts PHP exceptions to \nspec-compliant errors\n\nand provides tools for error debugging.\n\n\nClass Methods:\n \n\n\n/**\n * Set default error message for internal errors formatted using createFormattedError().\n * This value can be overridden by passing 3rd argument to `createFormattedError()`.\n *\n * @api\n * @param string $msg\n */\nstatic function setInternalErrorMessage($msg)\n\n\n\n\n/**\n * Standard GraphQL error formatter. Converts any exception to array\n * conforming to GraphQL spec.\n *\n * This method only exposes exception message when exception implements ClientAware interface\n * (or when debug flags are passed).\n *\n * For a list of available debug flags see GraphQL\\Error\\Debug constants.\n *\n * @api\n * @param \\Throwable $e\n * @param bool|int $debug\n * @param string $internalErrorMessage\n * @return array\n * @throws \\Throwable\n */\nstatic function createFromException($e, $debug = false, $internalErrorMessage = null)\n\n\n\n\n/**\n * Returns error trace as serializable array\n *\n * @api\n * @param \\Throwable $error\n * @return array\n */\nstatic function toSafeTrace($error)\n\n\n\n\nGraphQL\\Server\\StandardServer\n\n\nGraphQL server compatible with both: \nexpress-graphql\n\nand \nApollo Server\n.\nUsage Example:\n\n\n$server = new StandardServer([\n  'schema' => $mySchema\n]);\n$server->handleRequest();\n\n\n\nOr using \nServerConfig\n instance:\n\n\n$config = GraphQL\\Server\\ServerConfig::create()\n    ->setSchema($mySchema)\n    ->setContext($myContext);\n\n$server = new GraphQL\\Server\\StandardServer($config);\n$server->handleRequest();\n\n\n\nSee \ndedicated section in docs\n for details.\n\n\nClass Methods:\n \n\n\n/**\n * Converts and exception to error and sends spec-compliant HTTP 500 error.\n * Useful when an exception is thrown somewhere outside of server execution context\n * (e.g. during schema instantiation).\n *\n * @api\n * @param \\Throwable $error\n * @param bool $debug\n * @param bool $exitWhenDone\n */\nstatic function send500Error($error, $debug = false, $exitWhenDone = false)\n\n\n\n\n/**\n * Creates new instance of a standard GraphQL HTTP server\n *\n * @api\n * @param ServerConfig|array $config\n */\nfunction __construct($config)\n\n\n\n\n/**\n * Parses HTTP request, executes and emits response (using standard PHP `header` function and `echo`)\n *\n * By default (when $parsedBody is not set) it uses PHP globals to parse a request.\n * It is possible to implement request parsing elsewhere (e.g. using framework Request instance)\n * and then pass it to the server.\n *\n * See `executeRequest()` if you prefer to emit response yourself\n * (e.g. using Response object of some framework)\n *\n * @api\n * @param OperationParams|OperationParams[] $parsedBody\n * @param bool $exitWhenDone\n */\nfunction handleRequest($parsedBody = null, $exitWhenDone = false)\n\n\n\n\n/**\n * Executes GraphQL operation and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter).\n *\n * By default (when $parsedBody is not set) it uses PHP globals to parse a request.\n * It is possible to implement request parsing elsewhere (e.g. using framework Request instance)\n * and then pass it to the server.\n *\n * PSR-7 compatible method executePsrRequest() does exactly this.\n *\n * @api\n * @param OperationParams|OperationParams[] $parsedBody\n * @return ExecutionResult|ExecutionResult[]|Promise\n * @throws InvariantViolation\n */\nfunction executeRequest($parsedBody = null)\n\n\n\n\n/**\n * Executes PSR-7 request and fulfills PSR-7 response.\n *\n * See `executePsrRequest()` if you prefer to create response yourself\n * (e.g. using specific JsonResponse instance of some framework).\n *\n * @api\n * @param ServerRequestInterface $request\n * @param ResponseInterface $response\n * @param StreamInterface $writableBodyStream\n * @return ResponseInterface|Promise\n */\nfunction processPsrRequest(\n    Psr\\Http\\Message\\ServerRequestInterface $request,\n    Psr\\Http\\Message\\ResponseInterface $response,\n    Psr\\Http\\Message\\StreamInterface $writableBodyStream\n)\n\n\n\n\n/**\n * Executes GraphQL operation and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter)\n *\n * @api\n * @param ServerRequestInterface $request\n * @return ExecutionResult|ExecutionResult[]|Promise\n */\nfunction executePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request)\n\n\n\n\n/**\n * Returns an instance of Server helper, which contains most of the actual logic for\n * parsing / validating / executing request (which could be re-used by other server implementations)\n *\n * @api\n * @return Helper\n */\nfunction getHelper()\n\n\n\n\nGraphQL\\Server\\ServerConfig\n\n\nServer configuration class.\nCould be passed directly to server constructor. List of options accepted by \ncreate\n method is\n\ndescribed in docs\n.\n\n\nUsage example:\n\n\n$config = GraphQL\\Server\\ServerConfig::create()\n    ->setSchema($mySchema)\n    ->setContext($myContext);\n\n$server = new GraphQL\\Server\\StandardServer($config);\n\n\n\nClass Methods:\n \n\n\n/**\n * Converts an array of options to instance of ServerConfig\n * (or just returns empty config when array is not passed).\n *\n * @api\n * @param array $config\n * @return ServerConfig\n */\nstatic function create(array $config = [])\n\n\n\n\n/**\n * @api\n * @param Schema $schema\n * @return $this\n */\nfunction setSchema(GraphQL\\Type\\Schema $schema)\n\n\n\n\n/**\n * @api\n * @param mixed|\\Closure $context\n * @return $this\n */\nfunction setContext($context)\n\n\n\n\n/**\n * @api\n * @param mixed|\\Closure $rootValue\n * @return $this\n */\nfunction setRootValue($rootValue)\n\n\n\n\n/**\n * Expects function(Throwable $e) : array\n *\n * @api\n * @param callable $errorFormatter\n * @return $this\n */\nfunction setErrorFormatter(callable $errorFormatter)\n\n\n\n\n/**\n * Expects function(array $errors, callable $formatter) : array\n *\n * @api\n * @param callable $handler\n * @return $this\n */\nfunction setErrorsHandler(callable $handler)\n\n\n\n\n/**\n * Set validation rules for this server.\n *\n * @api\n * @param array|callable\n * @return $this\n */\nfunction setValidationRules($validationRules)\n\n\n\n\n/**\n * @api\n * @param callable $fieldResolver\n * @return $this\n */\nfunction setFieldResolver(callable $fieldResolver)\n\n\n\n\n/**\n * Expects function($queryId, OperationParams $params) : string|DocumentNode\n *\n * This function must return query string or valid DocumentNode.\n *\n * @api\n * @param callable $persistentQueryLoader\n * @return $this\n */\nfunction setPersistentQueryLoader(callable $persistentQueryLoader)\n\n\n\n\n/**\n * Set response debug flags. See GraphQL\\Error\\Debug class for a list of all available flags\n *\n * @api\n * @param bool|int $set\n * @return $this\n */\nfunction setDebug($set = true)\n\n\n\n\n/**\n * Allow batching queries (disabled by default)\n *\n * @api\n * @param bool $enableBatching\n * @return $this\n */\nfunction setQueryBatching($enableBatching)\n\n\n\n\n/**\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @return $this\n */\nfunction setPromiseAdapter(GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter)\n\n\n\n\nGraphQL\\Server\\Helper\n\n\nContains functionality that could be re-used by various server implementations\n\n\nClass Methods:\n \n\n\n/**\n * Parses HTTP request using PHP globals and returns GraphQL OperationParams\n * contained in this request. For batched requests it returns an array of OperationParams.\n *\n * This function does not check validity of these params\n * (validation is performed separately in validateOperationParams() method).\n *\n * If $readRawBodyFn argument is not provided - will attempt to read raw request body\n * from `php://input` stream.\n *\n * Internally it normalizes input to $method, $bodyParams and $queryParams and\n * calls `parseRequestParams()` to produce actual return value.\n *\n * For PSR-7 request parsing use `parsePsrRequest()` instead.\n *\n * @api\n * @param callable|null $readRawBodyFn\n * @return OperationParams|OperationParams[]\n * @throws RequestError\n */\nfunction parseHttpRequest(callable $readRawBodyFn = null)\n\n\n\n\n/**\n * Parses normalized request params and returns instance of OperationParams\n * or array of OperationParams in case of batch operation.\n *\n * Returned value is a suitable input for `executeOperation` or `executeBatch` (if array)\n *\n * @api\n * @param string $method\n * @param array $bodyParams\n * @param array $queryParams\n * @return OperationParams|OperationParams[]\n * @throws RequestError\n */\nfunction parseRequestParams($method, array $bodyParams, array $queryParams)\n\n\n\n\n/**\n * Checks validity of OperationParams extracted from HTTP request and returns an array of errors\n * if params are invalid (or empty array when params are valid)\n *\n * @api\n * @param OperationParams $params\n * @return Error[]\n */\nfunction validateOperationParams(GraphQL\\Server\\OperationParams $params)\n\n\n\n\n/**\n * Executes GraphQL operation with given server configuration and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter)\n *\n * @api\n * @param ServerConfig $config\n * @param OperationParams $op\n *\n * @return ExecutionResult|Promise\n */\nfunction executeOperation(GraphQL\\Server\\ServerConfig $config, GraphQL\\Server\\OperationParams $op)\n\n\n\n\n/**\n * Executes batched GraphQL operations with shared promise queue\n * (thus, effectively batching deferreds|promises of all queries at once)\n *\n * @api\n * @param ServerConfig $config\n * @param OperationParams[] $operations\n * @return ExecutionResult[]|Promise\n */\nfunction executeBatch(GraphQL\\Server\\ServerConfig $config, array $operations)\n\n\n\n\n/**\n * Send response using standard PHP `header()` and `echo`.\n *\n * @api\n * @param Promise|ExecutionResult|ExecutionResult[] $result\n * @param bool $exitWhenDone\n */\nfunction sendResponse($result, $exitWhenDone = false)\n\n\n\n\n/**\n * Converts PSR-7 request to OperationParams[]\n *\n * @api\n * @param ServerRequestInterface $request\n * @return array|Helper\n * @throws RequestError\n */\nfunction parsePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request)\n\n\n\n\n/**\n * Converts query execution result to PSR-7 response\n *\n * @api\n * @param Promise|ExecutionResult|ExecutionResult[] $result\n * @param ResponseInterface $response\n * @param StreamInterface $writableBodyStream\n * @return Promise|ResponseInterface\n */\nfunction toPsrResponse(\n    $result,\n    Psr\\Http\\Message\\ResponseInterface $response,\n    Psr\\Http\\Message\\StreamInterface $writableBodyStream\n)\n\n\n\n\nGraphQL\\Server\\OperationParams\n\n\nStructure representing parsed HTTP parameters for GraphQL operation\n\n\nClass Props:\n \n\n\n/**\n * Id of the query (when using persistent queries).\n *\n * Valid aliases (case-insensitive):\n * - id\n * - queryId\n * - documentId\n *\n * @api\n * @var string\n */\npublic $queryId;\n\n/**\n * @api\n * @var string\n */\npublic $query;\n\n/**\n * @api\n * @var string\n */\npublic $operation;\n\n/**\n * @api\n * @var array\n */\npublic $variables;\n\n\n\n\nClass Methods:\n \n\n\n/**\n * Creates an instance from given array\n *\n * @api\n * @param array $params\n * @param bool $readonly\n * @return OperationParams\n */\nstatic function create(array $params, $readonly = false)\n\n\n\n\n/**\n * @api\n * @param string $key\n * @return mixed\n */\nfunction getOriginalInput($key)\n\n\n\n\n/**\n * Indicates that operation is executed in read-only context\n * (e.g. via HTTP GET request)\n *\n * @api\n * @return bool\n */\nfunction isReadOnly()\n\n\n\n\nGraphQL\\Utils\\BuildSchema\n\n\nBuild instance of \nGraphQL\\Type\\Schema\n out of type language definition (string or parsed AST)\nSee \nsection in docs\n for details.\n\n\nClass Methods:\n \n\n\n/**\n * This takes the ast of a schema document produced by the parse function in\n * GraphQL\\Language\\Parser.\n *\n * If no schema definition is provided, then it will look for types named Query\n * and Mutation.\n *\n * Given that AST it constructs a GraphQL\\Type\\Schema. The resulting schema\n * has no resolve methods, so execution will use default resolvers.\n *\n * Accepts options as a second argument:\n *\n *    - commentDescriptions:\n *        Provide true to use preceding comments as the description.\n *\n *\n * @api\n * @param DocumentNode $ast\n * @param array $options\n * @return Schema\n * @throws Error\n */\nstatic function buildAST(GraphQL\\Language\\AST\\DocumentNode $ast, array $options = [])\n\n\n\n\n/**\n * A helper function to build a GraphQLSchema directly from a source\n * document.\n *\n * @api\n * @param DocumentNode|Source|string $source\n * @param array $options\n * @return Schema\n */\nstatic function build($source, array $options = [])\n\n\n\n\nGraphQL\\Utils\\AST\n\n\nVarious utilities dealing with AST\n\n\nClass Methods:\n \n\n\n/**\n * Convert representation of AST as an associative array to instance of GraphQL\\Language\\AST\\Node.\n *\n * For example:\n *\n * ```php\n * AST::fromArray([\n *     'kind' => 'ListValue',\n *     'values' => [\n *         ['kind' => 'StringValue', 'value' => 'my str'],\n *         ['kind' => 'StringValue', 'value' => 'my other str']\n *     ],\n *     'loc' => ['start' => 21, 'end' => 25]\n * ]);\n * ```\n *\n * Will produce instance of `ListValueNode` where `values` prop is a lazily-evaluated `NodeList`\n * returning instances of `StringValueNode` on access.\n *\n * This is a reverse operation for AST::toArray($node)\n *\n * @api\n * @param array $node\n * @return Node\n */\nstatic function fromArray(array $node)\n\n\n\n\n/**\n * Convert AST node to serializable array\n *\n * @api\n * @param Node $node\n * @return array\n */\nstatic function toArray(GraphQL\\Language\\AST\\Node $node)\n\n\n\n\n/**\n * Produces a GraphQL Value AST given a PHP value.\n *\n * Optionally, a GraphQL type may be provided, which will be used to\n * disambiguate between value primitives.\n *\n * | PHP Value     | GraphQL Value        |\n * | ------------- | -------------------- |\n * | Object        | Input Object         |\n * | Assoc Array   | Input Object         |\n * | Array         | List                 |\n * | Boolean       | Boolean              |\n * | String        | String / Enum Value  |\n * | Int           | Int                  |\n * | Float         | Int / Float          |\n * | Mixed         | Enum Value           |\n * | null          | NullValue            |\n *\n * @api\n * @param $value\n * @param InputType $type\n * @return ObjectValueNode|ListValueNode|BooleanValueNode|IntValueNode|FloatValueNode|EnumValueNode|StringValueNode|NullValueNode\n */\nstatic function astFromValue($value, GraphQL\\Type\\Definition\\InputType $type)\n\n\n\n\n/**\n * Produces a PHP value given a GraphQL Value AST.\n *\n * A GraphQL type must be provided, which will be used to interpret different\n * GraphQL Value literals.\n *\n * Returns `null` when the value could not be validly coerced according to\n * the provided type.\n *\n * | GraphQL Value        | PHP Value     |\n * | -------------------- | ------------- |\n * | Input Object         | Assoc Array   |\n * | List                 | Array         |\n * | Boolean              | Boolean       |\n * | String               | String        |\n * | Int / Float          | Int / Float   |\n * | Enum Value           | Mixed         |\n * | Null Value           | null          |\n *\n * @api\n * @param $valueNode\n * @param InputType $type\n * @param null $variables\n * @return array|null|\\stdClass\n * @throws \\Exception\n */\nstatic function valueFromAST($valueNode, GraphQL\\Type\\Definition\\InputType $type, $variables = null)\n\n\n\n\n/**\n * Produces a PHP value given a GraphQL Value AST.\n *\n * Unlike `valueFromAST()`, no type is provided. The resulting JavaScript value\n * will reflect the provided GraphQL value AST.\n *\n * | GraphQL Value        | PHP Value     |\n * | -------------------- | ------------- |\n * | Input Object         | Assoc Array   |\n * | List                 | Array         |\n * | Boolean              | Boolean       |\n * | String               | String        |\n * | Int / Float          | Int / Float   |\n * | Enum                 | Mixed         |\n * | Null                 | null          |\n *\n * @api\n * @param Node $valueNode\n * @param array|null $variables\n * @return mixed\n * @throws \\Exception\n */\nstatic function valueFromASTUntyped($valueNode, array $variables = null)\n\n\n\n\n/**\n * Returns type definition for given AST Type node\n *\n * @api\n * @param Schema $schema\n * @param NamedTypeNode|ListTypeNode|NonNullTypeNode $inputTypeNode\n * @return Type\n * @throws \\Exception\n */\nstatic function typeFromAST(GraphQL\\Type\\Schema $schema, $inputTypeNode)\n\n\n\n\n/**\n * Returns operation type (\"query\", \"mutation\" or \"subscription\") given a document and operation name\n *\n * @api\n * @param DocumentNode $document\n * @param string $operationName\n * @return bool\n */\nstatic function getOperation(GraphQL\\Language\\AST\\DocumentNode $document, $operationName = null)\n\n\n\n\nGraphQL\\Utils\\SchemaPrinter\n\n\nGiven an instance of Schema, prints it in GraphQL type language.\n\n\nClass Methods:\n \n\n\n/**\n * Accepts options as a second argument:\n *\n *    - commentDescriptions:\n *        Provide true to use preceding comments as the description.\n * @api\n * @param Schema $schema\n * @return string\n */\nstatic function doPrint(GraphQL\\Type\\Schema $schema, array $options = [])\n\n\n\n\n/**\n * @api\n * @param Schema $schema\n * @return string\n */\nstatic function printIntrosepctionSchema(GraphQL\\Type\\Schema $schema, array $options = [])",
-            "title": "Class Reference"
-        },
-        {
-            "location": "/reference/#graphqlgraphql",
-            "text": "This is the primary facade for fulfilling GraphQL operations.\nSee  related documentation .  Class Methods:    /**\n * Executes graphql query.\n *\n * More sophisticated GraphQL servers, such as those which persist queries,\n * may wish to separate the validation and execution phases to a static time\n * tooling step, and a server runtime step.\n *\n * Available options:\n *\n * schema:\n *    The GraphQL type system to use when validating and executing a query.\n * source:\n *    A GraphQL language formatted string representing the requested operation.\n * rootValue:\n *    The value provided as the first argument to resolver functions on the top\n *    level type (e.g. the query object type).\n * context:\n *    The value provided as the third argument to all resolvers.\n *    Use this to pass current session, user data, etc\n * variableValues:\n *    A mapping of variable name to runtime value to use for all variables\n *    defined in the requestString.\n * operationName:\n *    The name of the operation to use if requestString contains multiple\n *    possible operations. Can be omitted if requestString contains only\n *    one operation.\n * fieldResolver:\n *    A resolver function to use when one is not provided by the schema.\n *    If not provided, the default field resolver is used (which looks for a\n *    value on the source value with the field's name).\n * validationRules:\n *    A set of rules for query validation step. Default value is all available rules.\n *    Empty array would allow to skip query validation (may be convenient for persisted\n *    queries which are validated before persisting and assumed valid during execution)\n *\n * @api\n * @param \\GraphQL\\Type\\Schema $schema\n * @param string|DocumentNode $source\n * @param mixed $rootValue\n * @param mixed $context\n * @param array|null $variableValues\n * @param string|null $operationName\n * @param callable $fieldResolver\n * @param array $validationRules\n *\n * @return ExecutionResult\n */\nstatic function executeQuery(\n    GraphQL\\Type\\Schema $schema,\n    $source,\n    $rootValue = null,\n    $context = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null,\n    array $validationRules = null\n)  /**\n * Same as executeQuery(), but requires PromiseAdapter and always returns a Promise.\n * Useful for Async PHP platforms.\n *\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @param \\GraphQL\\Type\\Schema $schema\n * @param string|DocumentNode $source\n * @param mixed $rootValue\n * @param mixed $context\n * @param array|null $variableValues\n * @param string|null $operationName\n * @param callable $fieldResolver\n * @param array $validationRules\n *\n * @return Promise\n */\nstatic function promiseToExecute(\n    GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter,\n    GraphQL\\Type\\Schema $schema,\n    $source,\n    $rootValue = null,\n    $context = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null,\n    array $validationRules = null\n)  /**\n * Returns directives defined in GraphQL spec\n *\n * @api\n * @return Directive[]\n */\nstatic function getStandardDirectives()  /**\n * Returns types defined in GraphQL spec\n *\n * @api\n * @return Type[]\n */\nstatic function getStandardTypes()  /**\n * Returns standard validation rules implementing GraphQL spec\n *\n * @api\n * @return AbstractValidationRule[]\n */\nstatic function getStandardValidationRules()",
-            "title": "GraphQL\\GraphQL"
-        },
-        {
-            "location": "/reference/#graphqltypedefinitiontype",
-            "text": "Registry of standard GraphQL types\nand a base class for all other types.  Class Methods:    /**\n * @api\n * @return IDType\n */\nstatic function id()  /**\n * @api\n * @return StringType\n */\nstatic function string()  /**\n * @api\n * @return BooleanType\n */\nstatic function boolean()  /**\n * @api\n * @return IntType\n */\nstatic function int()  /**\n * @api\n * @return FloatType\n */\nstatic function float()  /**\n * @api\n * @param Type|ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType|NonNull $wrappedType\n * @return ListOfType\n */\nstatic function listOf($wrappedType)  /**\n * @api\n * @param ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType $wrappedType\n * @return NonNull\n */\nstatic function nonNull($wrappedType)  /**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isInputType($type)  /**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isOutputType($type)  /**\n * @api\n * @param $type\n * @return bool\n */\nstatic function isLeafType($type)  /**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isCompositeType($type)  /**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isAbstractType($type)  /**\n * @api\n * @param Type $type\n * @return bool\n */\nstatic function isType($type)  /**\n * @api\n * @param Type $type\n * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType\n */\nstatic function getNullableType($type)  /**\n * @api\n * @param Type $type\n * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType\n */\nstatic function getNamedType($type)",
-            "title": "GraphQL\\Type\\Definition\\Type"
-        },
-        {
-            "location": "/reference/#graphqltypedefinitionresolveinfo",
-            "text": "Structure containing information useful for field resolution process.\nPassed as 3rd argument to every field resolver. See  docs on field resolving (data fetching) .  Class Props:    /**\n * The name of the field being resolved\n *\n * @api\n * @var string\n */\npublic $fieldName;\n\n/**\n * AST of all nodes referencing this field in the query.\n *\n * @api\n * @var FieldNode[]\n */\npublic $fieldNodes;\n\n/**\n * Expected return type of the field being resolved\n *\n * @api\n * @var ScalarType|ObjectType|InterfaceType|UnionType|EnumType|ListOfType|NonNull\n */\npublic $returnType;\n\n/**\n * Parent type of the field being resolved\n *\n * @api\n * @var ObjectType\n */\npublic $parentType;\n\n/**\n * Path to this field from the very root value\n *\n * @api\n * @var array\n */\npublic $path;\n\n/**\n * Instance of a schema used for execution\n *\n * @api\n * @var Schema\n */\npublic $schema;\n\n/**\n * AST of all fragments defined in query\n *\n * @api\n * @var FragmentDefinitionNode[]\n */\npublic $fragments;\n\n/**\n * Root value passed to query execution\n *\n * @api\n * @var mixed\n */\npublic $rootValue;\n\n/**\n * AST of operation definition node (query, mutation)\n *\n * @api\n * @var OperationDefinitionNode\n */\npublic $operation;\n\n/**\n * Array of variables passed to query execution\n *\n * @api\n * @var array\n */\npublic $variableValues;  Class Methods:    /**\n * Helper method that returns names of all fields selected in query for\n * $this->fieldName up to $depth levels\n *\n * Example:\n * query MyQuery{\n * {\n *   root {\n *     id,\n *     nested {\n *      nested1\n *      nested2 {\n *        nested3\n *      }\n *     }\n *   }\n * }\n *\n * Given this ResolveInfo instance is a part of \"root\" field resolution, and $depth === 1,\n * method will return:\n * [\n *     'id' => true,\n *     'nested' => [\n *         nested1 => true,\n *         nested2 => true\n *     ]\n * ]\n *\n * Warning: this method it is a naive implementation which does not take into account\n * conditional typed fragments. So use it with care for fields of interface and union types.\n *\n * @api\n * @param int $depth How many levels to include in output\n * @return array\n */\nfunction getFieldSelection($depth = 0)",
-            "title": "GraphQL\\Type\\Definition\\ResolveInfo"
-        },
-        {
-            "location": "/reference/#graphqllanguagedirectivelocation",
-            "text": "List of available directive locations  Class Constants:    const QUERY = \"QUERY\";\nconst MUTATION = \"MUTATION\";\nconst SUBSCRIPTION = \"SUBSCRIPTION\";\nconst FIELD = \"FIELD\";\nconst FRAGMENT_DEFINITION = \"FRAGMENT_DEFINITION\";\nconst FRAGMENT_SPREAD = \"FRAGMENT_SPREAD\";\nconst INLINE_FRAGMENT = \"INLINE_FRAGMENT\";\nconst SCHEMA = \"SCHEMA\";\nconst SCALAR = \"SCALAR\";\nconst OBJECT = \"OBJECT\";\nconst FIELD_DEFINITION = \"FIELD_DEFINITION\";\nconst ARGUMENT_DEFINITION = \"ARGUMENT_DEFINITION\";\nconst IFACE = \"INTERFACE\";\nconst UNION = \"UNION\";\nconst ENUM = \"ENUM\";\nconst ENUM_VALUE = \"ENUM_VALUE\";\nconst INPUT_OBJECT = \"INPUT_OBJECT\";\nconst INPUT_FIELD_DEFINITION = \"INPUT_FIELD_DEFINITION\";",
-            "title": "GraphQL\\Language\\DirectiveLocation"
-        },
-        {
-            "location": "/reference/#graphqltypeschemaconfig",
-            "text": "Schema configuration class.\nCould be passed directly to schema constructor. List of options accepted by  create  method is described in docs .  Usage example:  $config = SchemaConfig::create()\n    ->setQuery($myQueryType)\n    ->setTypeLoader($myTypeLoader);\n\n$schema = new Schema($config);  Class Methods:    /**\n * Converts an array of options to instance of SchemaConfig\n * (or just returns empty config when array is not passed).\n *\n * @api\n * @param array $options\n * @return SchemaConfig\n */\nstatic function create(array $options = [])  /**\n * @api\n * @param ObjectType $query\n * @return SchemaConfig\n */\nfunction setQuery($query)  /**\n * @api\n * @param ObjectType $mutation\n * @return SchemaConfig\n */\nfunction setMutation($mutation)  /**\n * @api\n * @param ObjectType $subscription\n * @return SchemaConfig\n */\nfunction setSubscription($subscription)  /**\n * @api\n * @param Type[]|callable $types\n * @return SchemaConfig\n */\nfunction setTypes($types)  /**\n * @api\n * @param Directive[] $directives\n * @return SchemaConfig\n */\nfunction setDirectives(array $directives)  /**\n * @api\n * @param callable $typeLoader\n * @return SchemaConfig\n */\nfunction setTypeLoader(callable $typeLoader)  /**\n * @api\n * @return ObjectType\n */\nfunction getQuery()  /**\n * @api\n * @return ObjectType\n */\nfunction getMutation()  /**\n * @api\n * @return ObjectType\n */\nfunction getSubscription()  /**\n * @api\n * @return Type[]\n */\nfunction getTypes()  /**\n * @api\n * @return Directive[]\n */\nfunction getDirectives()  /**\n * @api\n * @return callable\n */\nfunction getTypeLoader()",
-            "title": "GraphQL\\Type\\SchemaConfig"
-        },
-        {
-            "location": "/reference/#graphqltypeschema",
-            "text": "Schema Definition (see  related docs )  A Schema is created by supplying the root types of each type of operation:\nquery, mutation (optional) and subscription (optional). A schema definition is\nthen supplied to the validator and executor. Usage Example:  $schema = new GraphQL\\Type\\Schema([\n  'query' => $MyAppQueryRootType,\n  'mutation' => $MyAppMutationRootType,\n]);  Or using Schema Config instance:  $config = GraphQL\\Type\\SchemaConfig::create()\n    ->setQuery($MyAppQueryRootType)\n    ->setMutation($MyAppMutationRootType);\n\n$schema = new GraphQL\\Type\\Schema($config);  Class Methods:    /**\n * Schema constructor.\n *\n * @api\n * @param array|SchemaConfig $config\n */\nfunction __construct($config)  /**\n * Returns schema query type\n *\n * @api\n * @return ObjectType\n */\nfunction getQueryType()  /**\n * Returns schema mutation type\n *\n * @api\n * @return ObjectType|null\n */\nfunction getMutationType()  /**\n * Returns schema subscription\n *\n * @api\n * @return ObjectType|null\n */\nfunction getSubscriptionType()  /**\n * @api\n * @return SchemaConfig\n */\nfunction getConfig()  /**\n * Returns array of all types in this schema. Keys of this array represent type names, values are instances\n * of corresponding type definitions\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @return Type[]\n */\nfunction getTypeMap()  /**\n * Returns type by it's name\n *\n * @api\n * @param string $name\n * @return Type\n */\nfunction getType($name)  /**\n * Returns all possible concrete types for given abstract type\n * (implementations for interfaces and members of union type for unions)\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @param AbstractType $abstractType\n * @return ObjectType[]\n */\nfunction getPossibleTypes(GraphQL\\Type\\Definition\\AbstractType $abstractType)  /**\n * Returns true if object type is concrete type of given abstract type\n * (implementation for interfaces and members of union type for unions)\n *\n * @api\n * @param AbstractType $abstractType\n * @param ObjectType $possibleType\n * @return bool\n */\nfunction isPossibleType(\n    GraphQL\\Type\\Definition\\AbstractType $abstractType,\n    GraphQL\\Type\\Definition\\ObjectType $possibleType\n)  /**\n * Returns a list of directives supported by this schema\n *\n * @api\n * @return Directive[]\n */\nfunction getDirectives()  /**\n * Returns instance of directive by name\n *\n * @api\n * @param $name\n * @return Directive\n */\nfunction getDirective($name)  /**\n * Validates schema.\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @return InvariantViolation[]|Error[]\n */\nfunction validate()  /**\n * Validates schema.\n *\n * This operation requires full schema scan. Do not use in production environment.\n *\n * @api\n * @throws InvariantViolation\n */\nfunction assertValid()",
-            "title": "GraphQL\\Type\\Schema"
-        },
-        {
-            "location": "/reference/#graphqllanguageparser",
-            "text": "Parses string containing GraphQL query or  type definition  to Abstract Syntax Tree.  Class Methods:    /**\n * Given a GraphQL source, parses it into a `GraphQL\\Language\\AST\\DocumentNode`.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * Available options:\n *\n * noLocation: boolean,\n * (By default, the parser creates AST nodes that know the location\n * in the source that they correspond to. This configuration flag\n * disables that behavior for performance or testing.)\n *\n * experimentalFragmentVariables: boolean,\n * (If enabled, the parser will understand and parse variable definitions\n * contained in a fragment definition. They'll be represented in the\n * `variableDefinitions` field of the FragmentDefinitionNode.\n *\n * The syntax is identical to normal, query-defined variables. For example:\n *\n *   fragment A($var: Boolean = false) on T  {\n *     ...\n *   }\n *\n * Note: this feature is experimental and may change or be removed in the\n * future.)\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return DocumentNode\n * @throws SyntaxError\n */\nstatic function parse($source, array $options = [])  /**\n * Given a string containing a GraphQL value (ex. `[42]`), parse the AST for\n * that value.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * This is useful within tools that operate upon GraphQL Values directly and\n * in isolation of complete GraphQL documents.\n *\n * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::valueFromAST()`.\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode\n */\nstatic function parseValue($source, array $options = [])  /**\n * Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for\n * that type.\n * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered.\n *\n * This is useful within tools that operate upon GraphQL Types directly and\n * in isolation of complete GraphQL documents.\n *\n * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::typeFromAST()`.\n *\n * @api\n * @param Source|string $source\n * @param array $options\n * @return ListTypeNode|NameNode|NonNullTypeNode\n */\nstatic function parseType($source, array $options = [])",
-            "title": "GraphQL\\Language\\Parser"
-        },
-        {
-            "location": "/reference/#graphqllanguageprinter",
-            "text": "Prints AST to string. Capable of printing GraphQL queries and Type definition language.\nUseful for pretty-printing queries or printing back AST for logging, documentation, etc.  Usage example:  $query = 'query myQuery {someField}';\n$ast = GraphQL\\Language\\Parser::parse($query);\n$printed = GraphQL\\Language\\Printer::doPrint($ast);  Class Methods:    /**\n * Prints AST to string. Capable of printing GraphQL queries and Type definition language.\n *\n * @api\n * @param Node $ast\n * @return string\n */\nstatic function doPrint($ast)",
-            "title": "GraphQL\\Language\\Printer"
-        },
-        {
-            "location": "/reference/#graphqllanguagevisitor",
-            "text": "Utility for efficient AST traversal and modification.  visit()  will walk through an AST using a depth first traversal, calling\nthe visitor's enter function at each node in the traversal, and calling the\nleave function after visiting that node and all of it's child nodes.  By returning different values from the enter and leave functions, the\nbehavior of the visitor can be altered, including skipping over a sub-tree of\nthe AST (by returning false), editing the AST by returning a value or null\nto remove the value, or to stop the whole traversal by returning BREAK.  When using  visit()  to edit an AST, the original AST will not be modified, and\na new version of the AST with the changes applied will be returned from the\nvisit function.  $editedAST = Visitor::visit($ast, [\n  'enter' => function ($node, $key, $parent, $path, $ancestors) {\n    // return\n    //   null: no action\n    //   Visitor::skipNode(): skip visiting this node\n    //   Visitor::stop(): stop visiting altogether\n    //   Visitor::removeNode(): delete this node\n    //   any value: replace this node with the returned value\n  },\n  'leave' => function ($node, $key, $parent, $path, $ancestors) {\n    // return\n    //   null: no action\n    //   Visitor::stop(): stop visiting altogether\n    //   Visitor::removeNode(): delete this node\n    //   any value: replace this node with the returned value\n  }\n]);  Alternatively to providing enter() and leave() functions, a visitor can\ninstead provide functions named the same as the  kinds of AST nodes ,\nor enter/leave visitors at a named key, leading to four permutations of\nvisitor API:  1) Named visitors triggered when entering a node a specific kind.  Visitor::visit($ast, [\n  'Kind' => function ($node) {\n    // enter the \"Kind\" node\n  }\n]);  2) Named visitors that trigger upon entering and leaving a node of\n   a specific kind.  Visitor::visit($ast, [\n  'Kind' => [\n    'enter' => function ($node) {\n      // enter the \"Kind\" node\n    }\n    'leave' => function ($node) {\n      // leave the \"Kind\" node\n    }\n  ]\n]);  3) Generic visitors that trigger upon entering and leaving any node.  Visitor::visit($ast, [\n  'enter' => function ($node) {\n    // enter any node\n  },\n  'leave' => function ($node) {\n    // leave any node\n  }\n]);  4) Parallel visitors for entering and leaving nodes of a specific kind.  Visitor::visit($ast, [\n  'enter' => [\n    'Kind' => function($node) {\n      // enter the \"Kind\" node\n    }\n  },\n  'leave' => [\n    'Kind' => function ($node) {\n      // leave the \"Kind\" node\n    }\n  ]\n]);  Class Methods:    /**\n * Visit the AST (see class description for details)\n *\n * @api\n * @param Node $root\n * @param array $visitor\n * @param array $keyMap\n * @return Node|mixed\n * @throws \\Exception\n */\nstatic function visit($root, $visitor, $keyMap = null)  /**\n * Returns marker for visitor break\n *\n * @api\n * @return VisitorOperation\n */\nstatic function stop()  /**\n * Returns marker for skipping current node\n *\n * @api\n * @return VisitorOperation\n */\nstatic function skipNode()  /**\n * Returns marker for removing a node\n *\n * @api\n * @return VisitorOperation\n */\nstatic function removeNode()",
-            "title": "GraphQL\\Language\\Visitor"
-        },
-        {
-            "location": "/reference/#graphqllanguageastnodekind",
-            "text": "Class Constants:    const NAME = \"Name\";\nconst DOCUMENT = \"Document\";\nconst OPERATION_DEFINITION = \"OperationDefinition\";\nconst VARIABLE_DEFINITION = \"VariableDefinition\";\nconst VARIABLE = \"Variable\";\nconst SELECTION_SET = \"SelectionSet\";\nconst FIELD = \"Field\";\nconst ARGUMENT = \"Argument\";\nconst FRAGMENT_SPREAD = \"FragmentSpread\";\nconst INLINE_FRAGMENT = \"InlineFragment\";\nconst FRAGMENT_DEFINITION = \"FragmentDefinition\";\nconst INT = \"IntValue\";\nconst FLOAT = \"FloatValue\";\nconst STRING = \"StringValue\";\nconst BOOLEAN = \"BooleanValue\";\nconst ENUM = \"EnumValue\";\nconst NULL = \"NullValue\";\nconst LST = \"ListValue\";\nconst OBJECT = \"ObjectValue\";\nconst OBJECT_FIELD = \"ObjectField\";\nconst DIRECTIVE = \"Directive\";\nconst NAMED_TYPE = \"NamedType\";\nconst LIST_TYPE = \"ListType\";\nconst NON_NULL_TYPE = \"NonNullType\";\nconst SCHEMA_DEFINITION = \"SchemaDefinition\";\nconst OPERATION_TYPE_DEFINITION = \"OperationTypeDefinition\";\nconst SCALAR_TYPE_DEFINITION = \"ScalarTypeDefinition\";\nconst OBJECT_TYPE_DEFINITION = \"ObjectTypeDefinition\";\nconst FIELD_DEFINITION = \"FieldDefinition\";\nconst INPUT_VALUE_DEFINITION = \"InputValueDefinition\";\nconst INTERFACE_TYPE_DEFINITION = \"InterfaceTypeDefinition\";\nconst UNION_TYPE_DEFINITION = \"UnionTypeDefinition\";\nconst ENUM_TYPE_DEFINITION = \"EnumTypeDefinition\";\nconst ENUM_VALUE_DEFINITION = \"EnumValueDefinition\";\nconst INPUT_OBJECT_TYPE_DEFINITION = \"InputObjectTypeDefinition\";\nconst SCALAR_TYPE_EXTENSION = \"ScalarTypeExtension\";\nconst OBJECT_TYPE_EXTENSION = \"ObjectTypeExtension\";\nconst INTERFACE_TYPE_EXTENSION = \"InterfaceTypeExtension\";\nconst UNION_TYPE_EXTENSION = \"UnionTypeExtension\";\nconst ENUM_TYPE_EXTENSION = \"EnumTypeExtension\";\nconst INPUT_OBJECT_TYPE_EXTENSION = \"InputObjectTypeExtension\";\nconst DIRECTIVE_DEFINITION = \"DirectiveDefinition\";",
-            "title": "GraphQL\\Language\\AST\\NodeKind"
-        },
-        {
-            "location": "/reference/#graphqlexecutorexecutor",
-            "text": "Implements the \"Evaluating requests\" section of the GraphQL specification.  Class Methods:    /**\n * Executes DocumentNode against given $schema.\n *\n * Always returns ExecutionResult and never throws. All errors which occur during operation\n * execution are collected in `$result->errors`.\n *\n * @api\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param $rootValue\n * @param $contextValue\n * @param array|\\ArrayAccess $variableValues\n * @param null $operationName\n * @param callable $fieldResolver\n *\n * @return ExecutionResult|Promise\n */\nstatic function execute(\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    $rootValue = null,\n    $contextValue = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null\n)  /**\n * Same as execute(), but requires promise adapter and returns a promise which is always\n * fulfilled with an instance of ExecutionResult and never rejected.\n *\n * Useful for async PHP platforms.\n *\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param null $rootValue\n * @param null $contextValue\n * @param null $variableValues\n * @param null $operationName\n * @param callable|null $fieldResolver\n * @return Promise\n */\nstatic function promiseToExecute(\n    GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter,\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    $rootValue = null,\n    $contextValue = null,\n    $variableValues = null,\n    $operationName = null,\n    callable $fieldResolver = null\n)",
-            "title": "GraphQL\\Executor\\Executor"
-        },
-        {
-            "location": "/reference/#graphqlexecutorexecutionresult",
-            "text": "Returned after  query execution .\nRepresents both - result of successful execution and of a failed one\n(with errors collected in  errors  prop)  Could be converted to  spec-compliant \nserializable array using  toArray()  Class Props:    /**\n * Data collected from resolvers during query execution\n *\n * @api\n * @var array\n */\npublic $data;\n\n/**\n * Errors registered during query execution.\n *\n * If an error was caused by exception thrown in resolver, $error->getPrevious() would\n * contain original exception.\n *\n * @api\n * @var \\GraphQL\\Error\\Error[]\n */\npublic $errors;\n\n/**\n * User-defined serializable array of extensions included in serialized result.\n * Conforms to\n *\n * @api\n * @var array\n */\npublic $extensions;  Class Methods:    /**\n * Define custom error formatting (must conform to http://facebook.github.io/graphql/#sec-Errors)\n *\n * Expected signature is: function (GraphQL\\Error\\Error $error): array\n *\n * Default formatter is \"GraphQL\\Error\\FormattedError::createFromException\"\n *\n * Expected returned value must be an array:\n * array(\n *    'message' => 'errorMessage',\n *    // ... other keys\n * );\n *\n * @api\n * @param callable $errorFormatter\n * @return $this\n */\nfunction setErrorFormatter(callable $errorFormatter)  /**\n * Define custom logic for error handling (filtering, logging, etc).\n *\n * Expected handler signature is: function (array $errors, callable $formatter): array\n *\n * Default handler is:\n * function (array $errors, callable $formatter) {\n *     return array_map($formatter, $errors);\n * }\n *\n * @api\n * @param callable $handler\n * @return $this\n */\nfunction setErrorsHandler(callable $handler)  /**\n * Converts GraphQL query result to spec-compliant serializable array using provided\n * errors handler and formatter.\n *\n * If debug argument is passed, output of error formatter is enriched which debugging information\n * (\"debugMessage\", \"trace\" keys depending on flags).\n *\n * $debug argument must be either bool (only adds \"debugMessage\" to result) or sum of flags from\n * GraphQL\\Error\\Debug\n *\n * @api\n * @param bool|int $debug\n * @return array\n */\nfunction toArray($debug = false)",
-            "title": "GraphQL\\Executor\\ExecutionResult"
-        },
-        {
-            "location": "/reference/#graphqlexecutorpromisepromiseadapter",
-            "text": "Provides a means for integration of async PHP platforms ( related docs )  Interface Methods:    /**\n * Return true if the value is a promise or a deferred of the underlying platform\n *\n * @api\n * @param mixed $value\n * @return bool\n */\nfunction isThenable($value)  /**\n * Converts thenable of the underlying platform into GraphQL\\Executor\\Promise\\Promise instance\n *\n * @api\n * @param object $thenable\n * @return Promise\n */\nfunction convertThenable($thenable)  /**\n * Accepts our Promise wrapper, extracts adopted promise out of it and executes actual `then` logic described\n * in Promises/A+ specs. Then returns new wrapped instance of GraphQL\\Executor\\Promise\\Promise.\n *\n * @api\n * @param Promise $promise\n * @param callable|null $onFulfilled\n * @param callable|null $onRejected\n *\n * @return Promise\n */\nfunction then(\n    GraphQL\\Executor\\Promise\\Promise $promise,\n    callable $onFulfilled = null,\n    callable $onRejected = null\n)  /**\n * Creates a Promise\n *\n * Expected resolver signature:\n *     function(callable $resolve, callable $reject)\n *\n * @api\n * @param callable $resolver\n * @return Promise\n */\nfunction create(callable $resolver)  /**\n * Creates a fulfilled Promise for a value if the value is not a promise.\n *\n * @api\n * @param mixed $value\n * @return Promise\n */\nfunction createFulfilled($value = null)  /**\n * Creates a rejected promise for a reason if the reason is not a promise. If\n * the provided reason is a promise, then it is returned as-is.\n *\n * @api\n * @param \\Throwable $reason\n * @return Promise\n */\nfunction createRejected($reason)  /**\n * Given an array of promises (or values), returns a promise that is fulfilled when all the\n * items in the array are fulfilled.\n *\n * @api\n * @param array $promisesOrValues Promises or values.\n * @return Promise\n */\nfunction all(array $promisesOrValues)",
-            "title": "GraphQL\\Executor\\Promise\\PromiseAdapter"
-        },
-        {
-            "location": "/reference/#graphqlvalidatordocumentvalidator",
-            "text": "Implements the \"Validation\" section of the spec.  Validation runs synchronously, returning an array of encountered errors, or\nan empty array if no errors were encountered and the document is valid.  A list of specific validation rules may be provided. If not provided, the\ndefault list of rules defined by the GraphQL specification will be used.  Each validation rule is an instance of GraphQL\\Validator\\Rules\\AbstractValidationRule\nwhich returns a visitor (see the  GraphQL\\Language\\Visitor API ).  Visitor methods are expected to return an instance of  GraphQL\\Error\\Error ,\nor array of such instances when invalid.  Optionally a custom TypeInfo instance may be provided. If not provided, one\nwill be created from the provided schema.  Class Methods:    /**\n * Primary method for query validation. See class description for details.\n *\n * @api\n * @param Schema $schema\n * @param DocumentNode $ast\n * @param AbstractValidationRule[]|null $rules\n * @param TypeInfo|null $typeInfo\n * @return Error[]\n */\nstatic function validate(\n    GraphQL\\Type\\Schema $schema,\n    GraphQL\\Language\\AST\\DocumentNode $ast,\n    array $rules = null,\n    GraphQL\\Utils\\TypeInfo $typeInfo = null\n)  /**\n * Returns all global validation rules.\n *\n * @api\n * @return AbstractValidationRule[]\n */\nstatic function allRules()  /**\n * Returns global validation rule by name. Standard rules are named by class name, so\n * example usage for such rules:\n *\n * $rule = DocumentValidator::getRule(GraphQL\\Validator\\Rules\\QueryComplexity::class);\n *\n * @api\n * @param string $name\n * @return AbstractValidationRule\n */\nstatic function getRule($name)  /**\n * Add rule to list of global validation rules\n *\n * @api\n * @param AbstractValidationRule $rule\n */\nstatic function addRule(GraphQL\\Validator\\Rules\\AbstractValidationRule $rule)",
-            "title": "GraphQL\\Validator\\DocumentValidator"
-        },
-        {
-            "location": "/reference/#graphqlerrorerror",
-            "text": "Describes an Error found during the parse, validate, or\nexecute phases of performing a GraphQL operation. In addition to a message\nand stack trace, it also includes information about the locations in a\nGraphQL document and/or execution result that correspond to the Error.  When the error was caused by an exception thrown in resolver, original exception\nis available via  getPrevious() .  Also read related docs on  error handling  Class extends standard PHP  \\Exception , so all standard methods of base  \\Exception  class\nare available in addition to those listed below.  Class Constants:    const CATEGORY_GRAPHQL = \"graphql\";\nconst CATEGORY_INTERNAL = \"internal\";  Class Methods:    /**\n * An array of locations within the source GraphQL document which correspond to this error.\n *\n * Each entry has information about `line` and `column` within source GraphQL document:\n * $location->line;\n * $location->column;\n *\n * Errors during validation often contain multiple locations, for example to\n * point out to field mentioned in multiple fragments. Errors during execution include a\n * single location, the field which produced the error.\n *\n * @api\n * @return SourceLocation[]\n */\nfunction getLocations()  /**\n * Returns an array describing the path from the root value to the field which produced this error.\n * Only included for execution errors.\n *\n * @api\n * @return array|null\n */\nfunction getPath()",
-            "title": "GraphQL\\Error\\Error"
-        },
-        {
-            "location": "/reference/#graphqlerrorwarning",
-            "text": "Encapsulates warnings produced by the library.  Warnings can be suppressed (individually or all) if required.\nAlso it is possible to override warning handler (which is  trigger_error()  by default)  Class Constants:    const WARNING_ASSIGN = 2;\nconst WARNING_CONFIG = 4;\nconst WARNING_FULL_SCHEMA_SCAN = 8;\nconst WARNING_CONFIG_DEPRECATION = 16;\nconst WARNING_NOT_A_TYPE = 32;\nconst ALL = 63;  Class Methods:    /**\n * Sets warning handler which can intercept all system warnings.\n * When not set, trigger_error() is used to notify about warnings.\n *\n * @api\n * @param callable|null $warningHandler\n */\nstatic function setWarningHandler(callable $warningHandler = null)  /**\n * Suppress warning by id (has no effect when custom warning handler is set)\n *\n * Usage example:\n * Warning::suppress(Warning::WARNING_NOT_A_TYPE)\n *\n * When passing true - suppresses all warnings.\n *\n * @api\n * @param bool|int $suppress\n */\nstatic function suppress($suppress = true)  /**\n * Re-enable previously suppressed warning by id\n *\n * Usage example:\n * Warning::suppress(Warning::WARNING_NOT_A_TYPE)\n *\n * When passing true - re-enables all warnings.\n *\n * @api\n * @param bool|int $enable\n */\nstatic function enable($enable = true)",
-            "title": "GraphQL\\Error\\Warning"
-        },
-        {
-            "location": "/reference/#graphqlerrorclientaware",
-            "text": "This interface is used for  default error formatting .  Only errors implementing this interface (and returning true from  isClientSafe() )\nwill be formatted with original error message.  All other errors will be formatted with generic \"Internal server error\".  Interface Methods:    /**\n * Returns true when exception message is safe to be displayed to a client.\n *\n * @api\n * @return bool\n */\nfunction isClientSafe()  /**\n * Returns string describing a category of the error.\n *\n * Value \"graphql\" is reserved for errors produced by query parsing or validation, do not use it.\n *\n * @api\n * @return string\n */\nfunction getCategory()",
-            "title": "GraphQL\\Error\\ClientAware"
-        },
-        {
-            "location": "/reference/#graphqlerrordebug",
-            "text": "Collection of flags for  error debugging .  Class Constants:    const INCLUDE_DEBUG_MESSAGE = 1;\nconst INCLUDE_TRACE = 2;\nconst RETHROW_INTERNAL_EXCEPTIONS = 4;",
-            "title": "GraphQL\\Error\\Debug"
-        },
-        {
-            "location": "/reference/#graphqlerrorformattederror",
-            "text": "This class is used for  default error formatting .\nIt converts PHP exceptions to  spec-compliant errors \nand provides tools for error debugging.  Class Methods:    /**\n * Set default error message for internal errors formatted using createFormattedError().\n * This value can be overridden by passing 3rd argument to `createFormattedError()`.\n *\n * @api\n * @param string $msg\n */\nstatic function setInternalErrorMessage($msg)  /**\n * Standard GraphQL error formatter. Converts any exception to array\n * conforming to GraphQL spec.\n *\n * This method only exposes exception message when exception implements ClientAware interface\n * (or when debug flags are passed).\n *\n * For a list of available debug flags see GraphQL\\Error\\Debug constants.\n *\n * @api\n * @param \\Throwable $e\n * @param bool|int $debug\n * @param string $internalErrorMessage\n * @return array\n * @throws \\Throwable\n */\nstatic function createFromException($e, $debug = false, $internalErrorMessage = null)  /**\n * Returns error trace as serializable array\n *\n * @api\n * @param \\Throwable $error\n * @return array\n */\nstatic function toSafeTrace($error)",
-            "title": "GraphQL\\Error\\FormattedError"
-        },
-        {
-            "location": "/reference/#graphqlserverstandardserver",
-            "text": "GraphQL server compatible with both:  express-graphql \nand  Apollo Server .\nUsage Example:  $server = new StandardServer([\n  'schema' => $mySchema\n]);\n$server->handleRequest();  Or using  ServerConfig  instance:  $config = GraphQL\\Server\\ServerConfig::create()\n    ->setSchema($mySchema)\n    ->setContext($myContext);\n\n$server = new GraphQL\\Server\\StandardServer($config);\n$server->handleRequest();  See  dedicated section in docs  for details.  Class Methods:    /**\n * Converts and exception to error and sends spec-compliant HTTP 500 error.\n * Useful when an exception is thrown somewhere outside of server execution context\n * (e.g. during schema instantiation).\n *\n * @api\n * @param \\Throwable $error\n * @param bool $debug\n * @param bool $exitWhenDone\n */\nstatic function send500Error($error, $debug = false, $exitWhenDone = false)  /**\n * Creates new instance of a standard GraphQL HTTP server\n *\n * @api\n * @param ServerConfig|array $config\n */\nfunction __construct($config)  /**\n * Parses HTTP request, executes and emits response (using standard PHP `header` function and `echo`)\n *\n * By default (when $parsedBody is not set) it uses PHP globals to parse a request.\n * It is possible to implement request parsing elsewhere (e.g. using framework Request instance)\n * and then pass it to the server.\n *\n * See `executeRequest()` if you prefer to emit response yourself\n * (e.g. using Response object of some framework)\n *\n * @api\n * @param OperationParams|OperationParams[] $parsedBody\n * @param bool $exitWhenDone\n */\nfunction handleRequest($parsedBody = null, $exitWhenDone = false)  /**\n * Executes GraphQL operation and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter).\n *\n * By default (when $parsedBody is not set) it uses PHP globals to parse a request.\n * It is possible to implement request parsing elsewhere (e.g. using framework Request instance)\n * and then pass it to the server.\n *\n * PSR-7 compatible method executePsrRequest() does exactly this.\n *\n * @api\n * @param OperationParams|OperationParams[] $parsedBody\n * @return ExecutionResult|ExecutionResult[]|Promise\n * @throws InvariantViolation\n */\nfunction executeRequest($parsedBody = null)  /**\n * Executes PSR-7 request and fulfills PSR-7 response.\n *\n * See `executePsrRequest()` if you prefer to create response yourself\n * (e.g. using specific JsonResponse instance of some framework).\n *\n * @api\n * @param ServerRequestInterface $request\n * @param ResponseInterface $response\n * @param StreamInterface $writableBodyStream\n * @return ResponseInterface|Promise\n */\nfunction processPsrRequest(\n    Psr\\Http\\Message\\ServerRequestInterface $request,\n    Psr\\Http\\Message\\ResponseInterface $response,\n    Psr\\Http\\Message\\StreamInterface $writableBodyStream\n)  /**\n * Executes GraphQL operation and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter)\n *\n * @api\n * @param ServerRequestInterface $request\n * @return ExecutionResult|ExecutionResult[]|Promise\n */\nfunction executePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request)  /**\n * Returns an instance of Server helper, which contains most of the actual logic for\n * parsing / validating / executing request (which could be re-used by other server implementations)\n *\n * @api\n * @return Helper\n */\nfunction getHelper()",
-            "title": "GraphQL\\Server\\StandardServer"
-        },
-        {
-            "location": "/reference/#graphqlserverserverconfig",
-            "text": "Server configuration class.\nCould be passed directly to server constructor. List of options accepted by  create  method is described in docs .  Usage example:  $config = GraphQL\\Server\\ServerConfig::create()\n    ->setSchema($mySchema)\n    ->setContext($myContext);\n\n$server = new GraphQL\\Server\\StandardServer($config);  Class Methods:    /**\n * Converts an array of options to instance of ServerConfig\n * (or just returns empty config when array is not passed).\n *\n * @api\n * @param array $config\n * @return ServerConfig\n */\nstatic function create(array $config = [])  /**\n * @api\n * @param Schema $schema\n * @return $this\n */\nfunction setSchema(GraphQL\\Type\\Schema $schema)  /**\n * @api\n * @param mixed|\\Closure $context\n * @return $this\n */\nfunction setContext($context)  /**\n * @api\n * @param mixed|\\Closure $rootValue\n * @return $this\n */\nfunction setRootValue($rootValue)  /**\n * Expects function(Throwable $e) : array\n *\n * @api\n * @param callable $errorFormatter\n * @return $this\n */\nfunction setErrorFormatter(callable $errorFormatter)  /**\n * Expects function(array $errors, callable $formatter) : array\n *\n * @api\n * @param callable $handler\n * @return $this\n */\nfunction setErrorsHandler(callable $handler)  /**\n * Set validation rules for this server.\n *\n * @api\n * @param array|callable\n * @return $this\n */\nfunction setValidationRules($validationRules)  /**\n * @api\n * @param callable $fieldResolver\n * @return $this\n */\nfunction setFieldResolver(callable $fieldResolver)  /**\n * Expects function($queryId, OperationParams $params) : string|DocumentNode\n *\n * This function must return query string or valid DocumentNode.\n *\n * @api\n * @param callable $persistentQueryLoader\n * @return $this\n */\nfunction setPersistentQueryLoader(callable $persistentQueryLoader)  /**\n * Set response debug flags. See GraphQL\\Error\\Debug class for a list of all available flags\n *\n * @api\n * @param bool|int $set\n * @return $this\n */\nfunction setDebug($set = true)  /**\n * Allow batching queries (disabled by default)\n *\n * @api\n * @param bool $enableBatching\n * @return $this\n */\nfunction setQueryBatching($enableBatching)  /**\n * @api\n * @param PromiseAdapter $promiseAdapter\n * @return $this\n */\nfunction setPromiseAdapter(GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter)",
-            "title": "GraphQL\\Server\\ServerConfig"
-        },
-        {
-            "location": "/reference/#graphqlserverhelper",
-            "text": "Contains functionality that could be re-used by various server implementations  Class Methods:    /**\n * Parses HTTP request using PHP globals and returns GraphQL OperationParams\n * contained in this request. For batched requests it returns an array of OperationParams.\n *\n * This function does not check validity of these params\n * (validation is performed separately in validateOperationParams() method).\n *\n * If $readRawBodyFn argument is not provided - will attempt to read raw request body\n * from `php://input` stream.\n *\n * Internally it normalizes input to $method, $bodyParams and $queryParams and\n * calls `parseRequestParams()` to produce actual return value.\n *\n * For PSR-7 request parsing use `parsePsrRequest()` instead.\n *\n * @api\n * @param callable|null $readRawBodyFn\n * @return OperationParams|OperationParams[]\n * @throws RequestError\n */\nfunction parseHttpRequest(callable $readRawBodyFn = null)  /**\n * Parses normalized request params and returns instance of OperationParams\n * or array of OperationParams in case of batch operation.\n *\n * Returned value is a suitable input for `executeOperation` or `executeBatch` (if array)\n *\n * @api\n * @param string $method\n * @param array $bodyParams\n * @param array $queryParams\n * @return OperationParams|OperationParams[]\n * @throws RequestError\n */\nfunction parseRequestParams($method, array $bodyParams, array $queryParams)  /**\n * Checks validity of OperationParams extracted from HTTP request and returns an array of errors\n * if params are invalid (or empty array when params are valid)\n *\n * @api\n * @param OperationParams $params\n * @return Error[]\n */\nfunction validateOperationParams(GraphQL\\Server\\OperationParams $params)  /**\n * Executes GraphQL operation with given server configuration and returns execution result\n * (or promise when promise adapter is different from SyncPromiseAdapter)\n *\n * @api\n * @param ServerConfig $config\n * @param OperationParams $op\n *\n * @return ExecutionResult|Promise\n */\nfunction executeOperation(GraphQL\\Server\\ServerConfig $config, GraphQL\\Server\\OperationParams $op)  /**\n * Executes batched GraphQL operations with shared promise queue\n * (thus, effectively batching deferreds|promises of all queries at once)\n *\n * @api\n * @param ServerConfig $config\n * @param OperationParams[] $operations\n * @return ExecutionResult[]|Promise\n */\nfunction executeBatch(GraphQL\\Server\\ServerConfig $config, array $operations)  /**\n * Send response using standard PHP `header()` and `echo`.\n *\n * @api\n * @param Promise|ExecutionResult|ExecutionResult[] $result\n * @param bool $exitWhenDone\n */\nfunction sendResponse($result, $exitWhenDone = false)  /**\n * Converts PSR-7 request to OperationParams[]\n *\n * @api\n * @param ServerRequestInterface $request\n * @return array|Helper\n * @throws RequestError\n */\nfunction parsePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request)  /**\n * Converts query execution result to PSR-7 response\n *\n * @api\n * @param Promise|ExecutionResult|ExecutionResult[] $result\n * @param ResponseInterface $response\n * @param StreamInterface $writableBodyStream\n * @return Promise|ResponseInterface\n */\nfunction toPsrResponse(\n    $result,\n    Psr\\Http\\Message\\ResponseInterface $response,\n    Psr\\Http\\Message\\StreamInterface $writableBodyStream\n)",
-            "title": "GraphQL\\Server\\Helper"
-        },
-        {
-            "location": "/reference/#graphqlserveroperationparams",
-            "text": "Structure representing parsed HTTP parameters for GraphQL operation  Class Props:    /**\n * Id of the query (when using persistent queries).\n *\n * Valid aliases (case-insensitive):\n * - id\n * - queryId\n * - documentId\n *\n * @api\n * @var string\n */\npublic $queryId;\n\n/**\n * @api\n * @var string\n */\npublic $query;\n\n/**\n * @api\n * @var string\n */\npublic $operation;\n\n/**\n * @api\n * @var array\n */\npublic $variables;  Class Methods:    /**\n * Creates an instance from given array\n *\n * @api\n * @param array $params\n * @param bool $readonly\n * @return OperationParams\n */\nstatic function create(array $params, $readonly = false)  /**\n * @api\n * @param string $key\n * @return mixed\n */\nfunction getOriginalInput($key)  /**\n * Indicates that operation is executed in read-only context\n * (e.g. via HTTP GET request)\n *\n * @api\n * @return bool\n */\nfunction isReadOnly()",
-            "title": "GraphQL\\Server\\OperationParams"
-        },
-        {
-            "location": "/reference/#graphqlutilsbuildschema",
-            "text": "Build instance of  GraphQL\\Type\\Schema  out of type language definition (string or parsed AST)\nSee  section in docs  for details.  Class Methods:    /**\n * This takes the ast of a schema document produced by the parse function in\n * GraphQL\\Language\\Parser.\n *\n * If no schema definition is provided, then it will look for types named Query\n * and Mutation.\n *\n * Given that AST it constructs a GraphQL\\Type\\Schema. The resulting schema\n * has no resolve methods, so execution will use default resolvers.\n *\n * Accepts options as a second argument:\n *\n *    - commentDescriptions:\n *        Provide true to use preceding comments as the description.\n *\n *\n * @api\n * @param DocumentNode $ast\n * @param array $options\n * @return Schema\n * @throws Error\n */\nstatic function buildAST(GraphQL\\Language\\AST\\DocumentNode $ast, array $options = [])  /**\n * A helper function to build a GraphQLSchema directly from a source\n * document.\n *\n * @api\n * @param DocumentNode|Source|string $source\n * @param array $options\n * @return Schema\n */\nstatic function build($source, array $options = [])",
-            "title": "GraphQL\\Utils\\BuildSchema"
-        },
-        {
-            "location": "/reference/#graphqlutilsast",
-            "text": "Various utilities dealing with AST  Class Methods:    /**\n * Convert representation of AST as an associative array to instance of GraphQL\\Language\\AST\\Node.\n *\n * For example:\n *\n * ```php\n * AST::fromArray([\n *     'kind' => 'ListValue',\n *     'values' => [\n *         ['kind' => 'StringValue', 'value' => 'my str'],\n *         ['kind' => 'StringValue', 'value' => 'my other str']\n *     ],\n *     'loc' => ['start' => 21, 'end' => 25]\n * ]);\n * ```\n *\n * Will produce instance of `ListValueNode` where `values` prop is a lazily-evaluated `NodeList`\n * returning instances of `StringValueNode` on access.\n *\n * This is a reverse operation for AST::toArray($node)\n *\n * @api\n * @param array $node\n * @return Node\n */\nstatic function fromArray(array $node)  /**\n * Convert AST node to serializable array\n *\n * @api\n * @param Node $node\n * @return array\n */\nstatic function toArray(GraphQL\\Language\\AST\\Node $node)  /**\n * Produces a GraphQL Value AST given a PHP value.\n *\n * Optionally, a GraphQL type may be provided, which will be used to\n * disambiguate between value primitives.\n *\n * | PHP Value     | GraphQL Value        |\n * | ------------- | -------------------- |\n * | Object        | Input Object         |\n * | Assoc Array   | Input Object         |\n * | Array         | List                 |\n * | Boolean       | Boolean              |\n * | String        | String / Enum Value  |\n * | Int           | Int                  |\n * | Float         | Int / Float          |\n * | Mixed         | Enum Value           |\n * | null          | NullValue            |\n *\n * @api\n * @param $value\n * @param InputType $type\n * @return ObjectValueNode|ListValueNode|BooleanValueNode|IntValueNode|FloatValueNode|EnumValueNode|StringValueNode|NullValueNode\n */\nstatic function astFromValue($value, GraphQL\\Type\\Definition\\InputType $type)  /**\n * Produces a PHP value given a GraphQL Value AST.\n *\n * A GraphQL type must be provided, which will be used to interpret different\n * GraphQL Value literals.\n *\n * Returns `null` when the value could not be validly coerced according to\n * the provided type.\n *\n * | GraphQL Value        | PHP Value     |\n * | -------------------- | ------------- |\n * | Input Object         | Assoc Array   |\n * | List                 | Array         |\n * | Boolean              | Boolean       |\n * | String               | String        |\n * | Int / Float          | Int / Float   |\n * | Enum Value           | Mixed         |\n * | Null Value           | null          |\n *\n * @api\n * @param $valueNode\n * @param InputType $type\n * @param null $variables\n * @return array|null|\\stdClass\n * @throws \\Exception\n */\nstatic function valueFromAST($valueNode, GraphQL\\Type\\Definition\\InputType $type, $variables = null)  /**\n * Produces a PHP value given a GraphQL Value AST.\n *\n * Unlike `valueFromAST()`, no type is provided. The resulting JavaScript value\n * will reflect the provided GraphQL value AST.\n *\n * | GraphQL Value        | PHP Value     |\n * | -------------------- | ------------- |\n * | Input Object         | Assoc Array   |\n * | List                 | Array         |\n * | Boolean              | Boolean       |\n * | String               | String        |\n * | Int / Float          | Int / Float   |\n * | Enum                 | Mixed         |\n * | Null                 | null          |\n *\n * @api\n * @param Node $valueNode\n * @param array|null $variables\n * @return mixed\n * @throws \\Exception\n */\nstatic function valueFromASTUntyped($valueNode, array $variables = null)  /**\n * Returns type definition for given AST Type node\n *\n * @api\n * @param Schema $schema\n * @param NamedTypeNode|ListTypeNode|NonNullTypeNode $inputTypeNode\n * @return Type\n * @throws \\Exception\n */\nstatic function typeFromAST(GraphQL\\Type\\Schema $schema, $inputTypeNode)  /**\n * Returns operation type (\"query\", \"mutation\" or \"subscription\") given a document and operation name\n *\n * @api\n * @param DocumentNode $document\n * @param string $operationName\n * @return bool\n */\nstatic function getOperation(GraphQL\\Language\\AST\\DocumentNode $document, $operationName = null)",
-            "title": "GraphQL\\Utils\\AST"
-        },
-        {
-            "location": "/reference/#graphqlutilsschemaprinter",
-            "text": "Given an instance of Schema, prints it in GraphQL type language.  Class Methods:    /**\n * Accepts options as a second argument:\n *\n *    - commentDescriptions:\n *        Provide true to use preceding comments as the description.\n * @api\n * @param Schema $schema\n * @return string\n */\nstatic function doPrint(GraphQL\\Type\\Schema $schema, array $options = [])  /**\n * @api\n * @param Schema $schema\n * @return string\n */\nstatic function printIntrosepctionSchema(GraphQL\\Type\\Schema $schema, array $options = [])",
-            "title": "GraphQL\\Utils\\SchemaPrinter"
-        }
-    ]
-}
\ No newline at end of file
+{"config":{"lang":["en"],"prebuild_index":false,"separator":"[\\s\\-]+"},"docs":[{"location":"","text":"About GraphQL GraphQL is a modern way to build HTTP APIs consumed by the web and mobile clients. It is intended to be a replacement for REST and SOAP APIs (even for existing applications ). GraphQL itself is a specification designed by Facebook engineers. Various implementations of this specification were written in different languages and environments . Great overview of GraphQL features and benefits is presented on the official website . All of them equally apply to this PHP implementation. About graphql-php graphql-php is a feature-complete implementation of GraphQL specification in PHP (5.5+, 7.0+). It was originally inspired by reference JavaScript implementation published by Facebook. This library is a thin wrapper around your existing data layer and business logic. It doesn't dictate how these layers are implemented or which storage engines are used. Instead, it provides tools for creating rich API for your existing app. Library features include: Primitives to express your app as a Type System Validation and introspection of this Type System (for compatibility with tools like GraphiQL ) Parsing, validating and executing GraphQL queries against this Type System Rich error reporting , including query validation and execution errors Optional tools for parsing GraphQL Type language Tools for batching requests to backend storage Async PHP platforms support via promises Standard HTTP server Also, several complementary tools are available which provide integrations with existing PHP frameworks, add support for Relay, etc. Current Status The first version of this library (v0.1) was released on August 10th 2015. The current version (v0.10) supports all features described by GraphQL specification (including April 2016 add-ons) as well as some experimental features like Schema Language parser and Schema printer . Ready for real-world usage. GitHub Project source code is hosted on GitHub .","title":"About"},{"location":"#about-graphql","text":"GraphQL is a modern way to build HTTP APIs consumed by the web and mobile clients. It is intended to be a replacement for REST and SOAP APIs (even for existing applications ). GraphQL itself is a specification designed by Facebook engineers. Various implementations of this specification were written in different languages and environments . Great overview of GraphQL features and benefits is presented on the official website . All of them equally apply to this PHP implementation.","title":"About GraphQL"},{"location":"#about-graphql-php","text":"graphql-php is a feature-complete implementation of GraphQL specification in PHP (5.5+, 7.0+). It was originally inspired by reference JavaScript implementation published by Facebook. This library is a thin wrapper around your existing data layer and business logic. It doesn't dictate how these layers are implemented or which storage engines are used. Instead, it provides tools for creating rich API for your existing app. Library features include: Primitives to express your app as a Type System Validation and introspection of this Type System (for compatibility with tools like GraphiQL ) Parsing, validating and executing GraphQL queries against this Type System Rich error reporting , including query validation and execution errors Optional tools for parsing GraphQL Type language Tools for batching requests to backend storage Async PHP platforms support via promises Standard HTTP server Also, several complementary tools are available which provide integrations with existing PHP frameworks, add support for Relay, etc.","title":"About graphql-php"},{"location":"#current-status","text":"The first version of this library (v0.1) was released on August 10th 2015. The current version (v0.10) supports all features described by GraphQL specification (including April 2016 add-ons) as well as some experimental features like Schema Language parser and Schema printer . Ready for real-world usage.","title":"Current Status"},{"location":"#github","text":"Project source code is hosted on GitHub .","title":"GitHub"},{"location":"best-practices/","text":"Type Registry graphql-php expects that each type in Schema is presented by single instance. Therefore if you define your types as separate PHP classes you need to ensure that each type is referenced only once. Technically you can create several instances of your type (for example for tests), but GraphQL\\Type\\Schema will throw on attempt to add different instances with the same name. There are several ways to achieve this depending on your preferences. We provide reference implementation below that introduces TypeRegistry class:","title":"Type Registry"},{"location":"best-practices/#type-registry","text":"graphql-php expects that each type in Schema is presented by single instance. Therefore if you define your types as separate PHP classes you need to ensure that each type is referenced only once. Technically you can create several instances of your type (for example for tests), but GraphQL\\Type\\Schema will throw on attempt to add different instances with the same name. There are several ways to achieve this depending on your preferences. We provide reference implementation below that introduces TypeRegistry class:","title":"Type Registry"},{"location":"complementary-tools/","text":"Integrations Integration with Relay Integration with Laravel 5 + Relay Helpers for Laravel + Nuwave Lighthouse Symfony Bundle by Overblog Out of the box integration with any PSR-7 compatible framework (like Slim or Zend Expressive ) via Standard Server GraphQL PHP Tools Define types with Doctrine ORM annotations ( for PHP7.1 , for earlier PHP versions ) DataLoader PHP - as a ready implementation for deferred resolvers PSR 15 compliant middleware for the Standard Server (experimental) GraphQL Uploads for the Standard Server GraphQL Batch Processor - Simple library that provides a builder interface for defining collection, querying, filtering, and post-processing logic of batched data fetches. General GraphQL Tools GraphiQL - An in-browser IDE for exploring GraphQL ChromeiQL or GraphiQL Feen - GraphiQL as Google Chrome extension","title":"Complementary Tools"},{"location":"complementary-tools/#integrations","text":"Integration with Relay Integration with Laravel 5 + Relay Helpers for Laravel + Nuwave Lighthouse Symfony Bundle by Overblog Out of the box integration with any PSR-7 compatible framework (like Slim or Zend Expressive ) via Standard Server","title":"Integrations"},{"location":"complementary-tools/#graphql-php-tools","text":"Define types with Doctrine ORM annotations ( for PHP7.1 , for earlier PHP versions ) DataLoader PHP - as a ready implementation for deferred resolvers PSR 15 compliant middleware for the Standard Server (experimental) GraphQL Uploads for the Standard Server GraphQL Batch Processor - Simple library that provides a builder interface for defining collection, querying, filtering, and post-processing logic of batched data fetches.","title":"GraphQL PHP Tools"},{"location":"complementary-tools/#general-graphql-tools","text":"GraphiQL - An in-browser IDE for exploring GraphQL ChromeiQL or GraphiQL Feen - GraphiQL as Google Chrome extension","title":"General GraphQL Tools"},{"location":"concepts/","text":"Overview GraphQL is data-centric. On the very top level it is built around three major concepts: Schema , Query and Mutation . You are expected to express your application as Schema (aka Type System) and expose it with single HTTP endpoint (e.g. using our standard server ). Application clients (e.g. web or mobile clients) send Queries to this endpoint to request structured data and Mutations to perform changes (usually with HTTP POST method). Queries Queries are expressed in simple language that resembles JSON: { hero { name friends { name } } } It was designed to mirror the structure of expected response: { \"hero\": { \"name\": \"R2-D2\", \"friends\": [ {\"name\": \"Luke Skywalker\"}, {\"name\": \"Han Solo\"}, {\"name\": \"Leia Organa\"} ] } } graphql-php runtime parses Queries, makes sure that they are valid for given Type System and executes using data fetching tools provided by you as a part of integration. Queries are supposed to be idempotent. Mutations Mutations use advanced features of the very same query language (like arguments and variables) and have only semantic difference from Queries: mutation CreateReviewForEpisode($ep: Episode!, $review: ReviewInput!) { createReview(episode: $ep, review: $review) { stars commentary } } Variables $ep and $review are sent alongside with mutation. Full HTTP request might look like this: // POST /graphql-endpoint // Content-Type: application/javascript // { \"query\": \"mutation CreateReviewForEpisode...\", \"variables\": { \"ep\": \"JEDI\", \"review\": { \"stars\": 5, \"commentary\": \"This is a great movie!\" } } } As you see variables may include complex objects and they will be correctly validated by graphql-php runtime. Another nice feature of GraphQL mutations is that they also hold the query for data to be returned after mutation. In our example mutation will return: { \"createReview\": { \"stars\": 5, \"commentary\": \"This is a great movie!\" } } Type System Conceptually GraphQL type is a collection of fields. Each field in turn has it's own type which allows to build complex hierarchies. Quick example on pseudo-language: type BlogPost { title: String! author: User body: String } type User { id: Id! firstName: String lastName: String } Type system is a heart of GraphQL integration. That's where graphql-php comes into play. It provides following tools and primitives to describe your App as hierarchy of types: Primitives for defining objects and interfaces Primitives for defining enumerations and unions Primitives for defining custom scalar types Built-in scalar types: ID , String , Int , Float , Boolean Built-in type modifiers: ListOf and NonNull Same example expressed in graphql-php : <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'id' => Type::nonNull(Type::id()), 'firstName' => Type::string(), 'lastName' => Type::string() ] ]); $blogPostType = new ObjectType([ 'name' => 'BlogPost', 'fields' => [ 'title' => Type::nonNull(Type::string()), 'author' => $userType ] ]); Further Reading To get deeper understanding of GraphQL concepts - read the docs on official GraphQL website To get started with graphql-php - continue to next section \"Getting Started\"","title":"Overview"},{"location":"concepts/#overview","text":"GraphQL is data-centric. On the very top level it is built around three major concepts: Schema , Query and Mutation . You are expected to express your application as Schema (aka Type System) and expose it with single HTTP endpoint (e.g. using our standard server ). Application clients (e.g. web or mobile clients) send Queries to this endpoint to request structured data and Mutations to perform changes (usually with HTTP POST method).","title":"Overview"},{"location":"concepts/#queries","text":"Queries are expressed in simple language that resembles JSON: { hero { name friends { name } } } It was designed to mirror the structure of expected response: { \"hero\": { \"name\": \"R2-D2\", \"friends\": [ {\"name\": \"Luke Skywalker\"}, {\"name\": \"Han Solo\"}, {\"name\": \"Leia Organa\"} ] } } graphql-php runtime parses Queries, makes sure that they are valid for given Type System and executes using data fetching tools provided by you as a part of integration. Queries are supposed to be idempotent.","title":"Queries"},{"location":"concepts/#mutations","text":"Mutations use advanced features of the very same query language (like arguments and variables) and have only semantic difference from Queries: mutation CreateReviewForEpisode($ep: Episode!, $review: ReviewInput!) { createReview(episode: $ep, review: $review) { stars commentary } } Variables $ep and $review are sent alongside with mutation. Full HTTP request might look like this: // POST /graphql-endpoint // Content-Type: application/javascript // { \"query\": \"mutation CreateReviewForEpisode...\", \"variables\": { \"ep\": \"JEDI\", \"review\": { \"stars\": 5, \"commentary\": \"This is a great movie!\" } } } As you see variables may include complex objects and they will be correctly validated by graphql-php runtime. Another nice feature of GraphQL mutations is that they also hold the query for data to be returned after mutation. In our example mutation will return: { \"createReview\": { \"stars\": 5, \"commentary\": \"This is a great movie!\" } }","title":"Mutations"},{"location":"concepts/#type-system","text":"Conceptually GraphQL type is a collection of fields. Each field in turn has it's own type which allows to build complex hierarchies. Quick example on pseudo-language: type BlogPost { title: String! author: User body: String } type User { id: Id! firstName: String lastName: String } Type system is a heart of GraphQL integration. That's where graphql-php comes into play. It provides following tools and primitives to describe your App as hierarchy of types: Primitives for defining objects and interfaces Primitives for defining enumerations and unions Primitives for defining custom scalar types Built-in scalar types: ID , String , Int , Float , Boolean Built-in type modifiers: ListOf and NonNull Same example expressed in graphql-php : <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'id' => Type::nonNull(Type::id()), 'firstName' => Type::string(), 'lastName' => Type::string() ] ]); $blogPostType = new ObjectType([ 'name' => 'BlogPost', 'fields' => [ 'title' => Type::nonNull(Type::string()), 'author' => $userType ] ]);","title":"Type System"},{"location":"concepts/#further-reading","text":"To get deeper understanding of GraphQL concepts - read the docs on official GraphQL website To get started with graphql-php - continue to next section \"Getting Started\"","title":"Further Reading"},{"location":"data-fetching/","text":"Overview GraphQL is data-storage agnostic. You can use any underlying data storage engine, including SQL or NoSQL database, plain files or in-memory data structures. In order to convert the GraphQL query to PHP array, graphql-php traverses query fields (using depth-first algorithm) and runs special resolve function on each field. This resolve function is provided by you as a part of field definition or query execution call . Result returned by resolve function is directly included in the response (for scalars and enums) or passed down to nested fields (for objects). Let's walk through an example. Consider following GraphQL query: { lastStory { title author { name } } } We need a Schema that can fulfill it. On the very top level the Schema contains Query type: <?php use GraphQL\\Type\\Definition\\ObjectType; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'lastStory' => [ 'type' => $blogStoryType, 'resolve' => function() { return [ 'id' => 1, 'title' => 'Example blog post', 'authorId' => 1 ]; } ] ] ]); As we see field lastStory has resolve function that is responsible for fetching data. In our example, we simply return array value, but in the real-world application you would query your database/cache/search index and return the result. Since lastStory is of composite type BlogStory this result is passed down to fields of this type: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $blogStoryType = new ObjectType([ 'name' => 'BlogStory', 'fields' => [ 'author' => [ 'type' => $userType, 'resolve' => function($blogStory) { $users = [ 1 => [ 'id' => 1, 'name' => 'Smith' ], 2 => [ 'id' => 2, 'name' => 'Anderson' ] ]; return $users[$blogStory['authorId']]; } ], 'title' => [ 'type' => Type::string() ] ] ]); Here $blogStory is the array returned by lastStory field above. Again: in the real-world applications you would fetch user data from data store by authorId and return it. Also, note that you don't have to return arrays. You can return any value, graphql-php will pass it untouched to nested resolvers. But then the question appears - field title has no resolve option. How is it resolved? There is a default resolver for all fields. When you define your own resolve function for a field you simply override this default resolver. Default Field Resolver graphql-php provides following default field resolver: <?php function defaultFieldResolver($source, $args, $context, \\GraphQL\\Type\\Definition\\ResolveInfo $info) { $fieldName = $info->fieldName; $property = null; if (is_array($source) || $source instanceof \\ArrayAccess) { if (isset($source[$fieldName])) { $property = $source[$fieldName]; } } else if (is_object($source)) { if (isset($source->{$fieldName})) { $property = $source->{$fieldName}; } } return $property instanceof \\Closure ? $property($source, $args, $context) : $property; } As you see it returns value by key (for arrays) or property (for objects). If the value is not set - it returns null . To override the default resolver, pass it as an argument of executeQuery call. Default Field Resolver per Type Sometimes it might be convenient to set default field resolver per type. You can do so by providing resolveField option in type config . For example: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\ResolveInfo; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'name' => Type::string(), 'email' => Type::string() ], 'resolveField' => function(User $user, $args, $context, ResolveInfo $info) { switch ($info->fieldName) { case 'name': return $user->getName(); case 'email': return $user->getEmail(); default: return null; } } ]); Keep in mind that field resolver has precedence over default field resolver per type which in turn has precedence over default field resolver . Solving N+1 Problem Since: 0.9.0 One of the most annoying problems with data fetching is a so-called N+1 problem . Consider following GraphQL query: { topStories(limit: 10) { title author { name email } } } Naive field resolution process would require up to 10 calls to the underlying data store to fetch authors for all 10 stories. graphql-php provides tools to mitigate this problem: it allows you to defer actual field resolution to a later stage when one batched query could be executed instead of 10 distinct queries. Here is an example of BlogStory resolver for field author that uses deferring: <?php 'resolve' => function($blogStory) { MyUserBuffer::add($blogStory['authorId']); return new GraphQL\\Deferred(function () use ($blogStory) { MyUserBuffer::loadBuffered(); return MyUserBuffer::get($blogStory['authorId']); }); } In this example, we fill up the buffer with 10 author ids first. Then graphql-php continues resolving other non-deferred fields until there are none of them left. After that, it calls closures wrapped by GraphQL\\Deferred which in turn load all buffered ids once (using SQL IN(?), Redis MGET or other similar tools) and returns final field value. Originally this approach was advocated by Facebook in their Dataloader project. This solution enables very interesting optimizations at no cost. Consider the following query: { topStories(limit: 10) { author { email } } category { stories(limit: 10) { author { email } } } } Even though author field is located on different levels of the query - it can be buffered in the same buffer. In this example, only one query will be executed for all story authors comparing to 20 queries in a naive implementation. Async PHP Since: 0.10.0 (version 0.9.0 had slightly different API which still works, but is deprecated) If your project runs in an environment that supports async operations (like HHVM, ReactPHP, Icicle.io, appserver.io, PHP threads, etc) you can leverage the power of your platform to resolve some fields asynchronously. The only requirement: your platform must support the concept of Promises compatible with Promises A+ specification. To start using this feature, switch facade method for query execution from executeQuery to promiseToExecute : <?php use GraphQL\\GraphQL; use GraphQL\\Executor\\ExecutionResult; $promise = GraphQL::promiseToExecute( $promiseAdapter, $schema, $queryString, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, $fieldResolver = null, $validationRules = null ); $promise->then(function(ExecutionResult $result) { return $result->toArray(); }); Where $promiseAdapter is an instance of: For ReactPHP (requires react/promise as composer dependency): GraphQL\\Executor\\Promise\\Adapter\\ReactPromiseAdapter Other platforms: write your own class implementing interface: GraphQL\\Executor\\Promise\\PromiseAdapter . Then your resolve functions should return promises of your platform instead of GraphQL\\Deferred s.","title":"Fetching Data"},{"location":"data-fetching/#overview","text":"GraphQL is data-storage agnostic. You can use any underlying data storage engine, including SQL or NoSQL database, plain files or in-memory data structures. In order to convert the GraphQL query to PHP array, graphql-php traverses query fields (using depth-first algorithm) and runs special resolve function on each field. This resolve function is provided by you as a part of field definition or query execution call . Result returned by resolve function is directly included in the response (for scalars and enums) or passed down to nested fields (for objects). Let's walk through an example. Consider following GraphQL query: { lastStory { title author { name } } } We need a Schema that can fulfill it. On the very top level the Schema contains Query type: <?php use GraphQL\\Type\\Definition\\ObjectType; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'lastStory' => [ 'type' => $blogStoryType, 'resolve' => function() { return [ 'id' => 1, 'title' => 'Example blog post', 'authorId' => 1 ]; } ] ] ]); As we see field lastStory has resolve function that is responsible for fetching data. In our example, we simply return array value, but in the real-world application you would query your database/cache/search index and return the result. Since lastStory is of composite type BlogStory this result is passed down to fields of this type: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $blogStoryType = new ObjectType([ 'name' => 'BlogStory', 'fields' => [ 'author' => [ 'type' => $userType, 'resolve' => function($blogStory) { $users = [ 1 => [ 'id' => 1, 'name' => 'Smith' ], 2 => [ 'id' => 2, 'name' => 'Anderson' ] ]; return $users[$blogStory['authorId']]; } ], 'title' => [ 'type' => Type::string() ] ] ]); Here $blogStory is the array returned by lastStory field above. Again: in the real-world applications you would fetch user data from data store by authorId and return it. Also, note that you don't have to return arrays. You can return any value, graphql-php will pass it untouched to nested resolvers. But then the question appears - field title has no resolve option. How is it resolved? There is a default resolver for all fields. When you define your own resolve function for a field you simply override this default resolver.","title":"Overview"},{"location":"data-fetching/#default-field-resolver","text":"graphql-php provides following default field resolver: <?php function defaultFieldResolver($source, $args, $context, \\GraphQL\\Type\\Definition\\ResolveInfo $info) { $fieldName = $info->fieldName; $property = null; if (is_array($source) || $source instanceof \\ArrayAccess) { if (isset($source[$fieldName])) { $property = $source[$fieldName]; } } else if (is_object($source)) { if (isset($source->{$fieldName})) { $property = $source->{$fieldName}; } } return $property instanceof \\Closure ? $property($source, $args, $context) : $property; } As you see it returns value by key (for arrays) or property (for objects). If the value is not set - it returns null . To override the default resolver, pass it as an argument of executeQuery call.","title":"Default Field Resolver"},{"location":"data-fetching/#default-field-resolver-per-type","text":"Sometimes it might be convenient to set default field resolver per type. You can do so by providing resolveField option in type config . For example: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\ResolveInfo; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'name' => Type::string(), 'email' => Type::string() ], 'resolveField' => function(User $user, $args, $context, ResolveInfo $info) { switch ($info->fieldName) { case 'name': return $user->getName(); case 'email': return $user->getEmail(); default: return null; } } ]); Keep in mind that field resolver has precedence over default field resolver per type which in turn has precedence over default field resolver .","title":"Default Field Resolver per Type"},{"location":"data-fetching/#solving-n1-problem","text":"Since: 0.9.0 One of the most annoying problems with data fetching is a so-called N+1 problem . Consider following GraphQL query: { topStories(limit: 10) { title author { name email } } } Naive field resolution process would require up to 10 calls to the underlying data store to fetch authors for all 10 stories. graphql-php provides tools to mitigate this problem: it allows you to defer actual field resolution to a later stage when one batched query could be executed instead of 10 distinct queries. Here is an example of BlogStory resolver for field author that uses deferring: <?php 'resolve' => function($blogStory) { MyUserBuffer::add($blogStory['authorId']); return new GraphQL\\Deferred(function () use ($blogStory) { MyUserBuffer::loadBuffered(); return MyUserBuffer::get($blogStory['authorId']); }); } In this example, we fill up the buffer with 10 author ids first. Then graphql-php continues resolving other non-deferred fields until there are none of them left. After that, it calls closures wrapped by GraphQL\\Deferred which in turn load all buffered ids once (using SQL IN(?), Redis MGET or other similar tools) and returns final field value. Originally this approach was advocated by Facebook in their Dataloader project. This solution enables very interesting optimizations at no cost. Consider the following query: { topStories(limit: 10) { author { email } } category { stories(limit: 10) { author { email } } } } Even though author field is located on different levels of the query - it can be buffered in the same buffer. In this example, only one query will be executed for all story authors comparing to 20 queries in a naive implementation.","title":"Solving N+1 Problem"},{"location":"data-fetching/#async-php","text":"Since: 0.10.0 (version 0.9.0 had slightly different API which still works, but is deprecated) If your project runs in an environment that supports async operations (like HHVM, ReactPHP, Icicle.io, appserver.io, PHP threads, etc) you can leverage the power of your platform to resolve some fields asynchronously. The only requirement: your platform must support the concept of Promises compatible with Promises A+ specification. To start using this feature, switch facade method for query execution from executeQuery to promiseToExecute : <?php use GraphQL\\GraphQL; use GraphQL\\Executor\\ExecutionResult; $promise = GraphQL::promiseToExecute( $promiseAdapter, $schema, $queryString, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, $fieldResolver = null, $validationRules = null ); $promise->then(function(ExecutionResult $result) { return $result->toArray(); }); Where $promiseAdapter is an instance of: For ReactPHP (requires react/promise as composer dependency): GraphQL\\Executor\\Promise\\Adapter\\ReactPromiseAdapter Other platforms: write your own class implementing interface: GraphQL\\Executor\\Promise\\PromiseAdapter . Then your resolve functions should return promises of your platform instead of GraphQL\\Deferred s.","title":"Async PHP"},{"location":"error-handling/","text":"Errors in GraphQL Query execution process never throws exceptions. Instead, all errors are caught and collected. After execution, they are available in $errors prop of GraphQL\\Executor\\ExecutionResult . When the result is converted to a serializable array using its toArray() method, all errors are converted to arrays as well using default error formatting (see below). Alternatively, you can apply custom error filtering and formatting for your specific requirements. Default Error formatting By default, each error entry is converted to an associative array with following structure: <?php [ 'message' => 'Error message', 'category' => 'graphql', 'locations' => [ ['line' => 1, 'column' => 2] ], 'path' => [ 'listField', 0, 'fieldWithException' ] ]; Entry at key locations points to a character in query string which caused the error. In some cases (like deep fragment fields) locations will include several entries to track down the path to field with the error in query. Entry at key path exists only for errors caused by exceptions thrown in resolvers. It contains a path from the very root field to actual field value producing an error (including indexes for list types and field names for composite types). Internal errors As of version 0.10.0 , all exceptions thrown in resolvers are reported with generic message \"Internal server error\" . This is done to avoid information leak in production environments (e.g. database connection errors, file access errors, etc). Only exceptions implementing interface GraphQL\\Error\\ClientAware and claiming themselves as safe will be reported with a full error message. For example: <?php use GraphQL\\Error\\ClientAware; class MySafeException extends \\Exception implements ClientAware { public function isClientSafe() { return true; } public function getCategory() { return 'businessLogic'; } } When such exception is thrown it will be reported with a full error message: <?php [ 'message' => 'My reported error', 'category' => 'businessLogic', 'locations' => [ ['line' => 10, 'column' => 2] ], 'path' => [ 'path', 'to', 'fieldWithException' ] ]; To change default \"Internal server error\" message to something else, use: GraphQL\\Error\\FormattedError::setInternalErrorMessage(\"Unexpected error\"); Debugging tools During development or debugging use $result->toArray(true) to add debugMessage key to each formatted error entry. If you also want to add exception trace - pass flags instead: use GraphQL\\Error\\Debug; $debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::INCLUDE_TRACE; $result = GraphQL::executeQuery(/*args*/)->toArray($debug); This will make each error entry to look like this: <?php [ 'debugMessage' => 'Actual exception message', 'message' => 'Internal server error', 'category' => 'internal', 'locations' => [ ['line' => 10, 'column' => 2] ], 'path' => [ 'listField', 0, 'fieldWithException' ], 'trace' => [ /* Formatted original exception trace */ ] ]; If you prefer first resolver exception to be re-thrown, use following flags: <?php use GraphQL\\GraphQL; use GraphQL\\Error\\Debug; $debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::RETHROW_INTERNAL_EXCEPTIONS; // Following will throw if there was an exception in resolver during execution: $result = GraphQL::executeQuery(/*args*/)->toArray($debug); Custom Error Handling and Formatting It is possible to define custom formatter and handler for result errors. Formatter is responsible for converting instances of GraphQL\\Error\\Error to an array. Handler is useful for error filtering and logging. For example, these are default formatter and handler: <?php use GraphQL\\GraphQL; use GraphQL\\Error\\Error; use GraphQL\\Error\\FormattedError; $myErrorFormatter = function(Error $error) { return FormattedError::createFromException($error); }; $myErrorHandler = function(array $errors, callable $formatter) { return array_map($formatter, $errors); }; $result = GraphQL::executeQuery(/* $args */) ->setErrorFormatter($myErrorFormatter) ->setErrorsHandler($myErrorHandler) ->toArray(); Note that when you pass debug flags to toArray() your custom formatter will still be decorated with same debugging information mentioned above. Schema Errors So far we only covered errors which occur during query execution process. But schema definition can also throw GraphQL\\Error\\InvariantViolation if there is an error in one of type definitions. Usually such errors mean that there is some logical error in your schema and it is the only case when it makes sense to return 500 error code for GraphQL endpoint: <?php use GraphQL\\GraphQL; use GraphQL\\Type\\Schema; use GraphQL\\Error\\FormattedError; try { $schema = new Schema([ // ... ]); $body = GraphQL::executeQuery($schema, $query); $status = 200; } catch(\\Exception $e) { $body = [ 'errors' => [FormattedError::createFromException($e)] ]; $status = 500; } header('Content-Type: application/json', true, $status); echo json_encode($body);","title":"Handling Errors"},{"location":"error-handling/#errors-in-graphql","text":"Query execution process never throws exceptions. Instead, all errors are caught and collected. After execution, they are available in $errors prop of GraphQL\\Executor\\ExecutionResult . When the result is converted to a serializable array using its toArray() method, all errors are converted to arrays as well using default error formatting (see below). Alternatively, you can apply custom error filtering and formatting for your specific requirements.","title":"Errors in GraphQL"},{"location":"error-handling/#default-error-formatting","text":"By default, each error entry is converted to an associative array with following structure: <?php [ 'message' => 'Error message', 'category' => 'graphql', 'locations' => [ ['line' => 1, 'column' => 2] ], 'path' => [ 'listField', 0, 'fieldWithException' ] ]; Entry at key locations points to a character in query string which caused the error. In some cases (like deep fragment fields) locations will include several entries to track down the path to field with the error in query. Entry at key path exists only for errors caused by exceptions thrown in resolvers. It contains a path from the very root field to actual field value producing an error (including indexes for list types and field names for composite types). Internal errors As of version 0.10.0 , all exceptions thrown in resolvers are reported with generic message \"Internal server error\" . This is done to avoid information leak in production environments (e.g. database connection errors, file access errors, etc). Only exceptions implementing interface GraphQL\\Error\\ClientAware and claiming themselves as safe will be reported with a full error message. For example: <?php use GraphQL\\Error\\ClientAware; class MySafeException extends \\Exception implements ClientAware { public function isClientSafe() { return true; } public function getCategory() { return 'businessLogic'; } } When such exception is thrown it will be reported with a full error message: <?php [ 'message' => 'My reported error', 'category' => 'businessLogic', 'locations' => [ ['line' => 10, 'column' => 2] ], 'path' => [ 'path', 'to', 'fieldWithException' ] ]; To change default \"Internal server error\" message to something else, use: GraphQL\\Error\\FormattedError::setInternalErrorMessage(\"Unexpected error\");","title":"Default Error formatting"},{"location":"error-handling/#debugging-tools","text":"During development or debugging use $result->toArray(true) to add debugMessage key to each formatted error entry. If you also want to add exception trace - pass flags instead: use GraphQL\\Error\\Debug; $debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::INCLUDE_TRACE; $result = GraphQL::executeQuery(/*args*/)->toArray($debug); This will make each error entry to look like this: <?php [ 'debugMessage' => 'Actual exception message', 'message' => 'Internal server error', 'category' => 'internal', 'locations' => [ ['line' => 10, 'column' => 2] ], 'path' => [ 'listField', 0, 'fieldWithException' ], 'trace' => [ /* Formatted original exception trace */ ] ]; If you prefer first resolver exception to be re-thrown, use following flags: <?php use GraphQL\\GraphQL; use GraphQL\\Error\\Debug; $debug = Debug::INCLUDE_DEBUG_MESSAGE | Debug::RETHROW_INTERNAL_EXCEPTIONS; // Following will throw if there was an exception in resolver during execution: $result = GraphQL::executeQuery(/*args*/)->toArray($debug);","title":"Debugging tools"},{"location":"error-handling/#custom-error-handling-and-formatting","text":"It is possible to define custom formatter and handler for result errors. Formatter is responsible for converting instances of GraphQL\\Error\\Error to an array. Handler is useful for error filtering and logging. For example, these are default formatter and handler: <?php use GraphQL\\GraphQL; use GraphQL\\Error\\Error; use GraphQL\\Error\\FormattedError; $myErrorFormatter = function(Error $error) { return FormattedError::createFromException($error); }; $myErrorHandler = function(array $errors, callable $formatter) { return array_map($formatter, $errors); }; $result = GraphQL::executeQuery(/* $args */) ->setErrorFormatter($myErrorFormatter) ->setErrorsHandler($myErrorHandler) ->toArray(); Note that when you pass debug flags to toArray() your custom formatter will still be decorated with same debugging information mentioned above.","title":"Custom Error Handling and Formatting"},{"location":"error-handling/#schema-errors","text":"So far we only covered errors which occur during query execution process. But schema definition can also throw GraphQL\\Error\\InvariantViolation if there is an error in one of type definitions. Usually such errors mean that there is some logical error in your schema and it is the only case when it makes sense to return 500 error code for GraphQL endpoint: <?php use GraphQL\\GraphQL; use GraphQL\\Type\\Schema; use GraphQL\\Error\\FormattedError; try { $schema = new Schema([ // ... ]); $body = GraphQL::executeQuery($schema, $query); $status = 200; } catch(\\Exception $e) { $body = [ 'errors' => [FormattedError::createFromException($e)] ]; $status = 500; } header('Content-Type: application/json', true, $status); echo json_encode($body);","title":"Schema Errors"},{"location":"executing-queries/","text":"Using Facade Method Query execution is a complex process involving multiple steps, including query parsing , validating and finally executing against your schema . graphql-php provides a convenient facade for this process in class GraphQL\\GraphQL : <?php use GraphQL\\GraphQL; $result = GraphQL::executeQuery( $schema, $queryString, $rootValue = null, $context = null, $variableValues = null, $operationName = null, $fieldResolver = null, $validationRules = null ); It returns an instance of GraphQL\\Executor\\ExecutionResult which can be easily converted to array: $serializableResult = $result->toArray(); Returned array contains data and errors keys, as described by the GraphQL spec . This array is suitable for further serialization (e.g. using json_encode ). See also the section on error handling and formatting . Description of executeQuery method arguments: Argument Type Notes schema GraphQL\\Type\\Schema Required. Instance of your application Schema queryString string or GraphQL\\Language\\AST\\DocumentNode Required. Actual GraphQL query string to be parsed, validated and executed. If you parse query elsewhere before executing - pass corresponding AST document here to avoid new parsing. rootValue mixed Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of Query type . Can be omitted or set to null if actual root values are fetched by Query type itself. context mixed Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on Field Definitions for reference) graphql-php never modifies this value and passes it as is to all underlying resolvers. variableValues array Map of variable values passed along with query string. See section on query variables on official GraphQL website operationName string Allows the caller to specify which operation in queryString will be run, in cases where queryString contains multiple top-level operations. fieldResolver callable A resolver function to use when one is not provided by the schema. If not provided, the default field resolver is used . validationRules array A set of rules for query validation step. The default value is all available rules. Empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution) Using Server If you are building HTTP GraphQL API, you may prefer our Standard Server (compatible with express-graphql ). It supports more features out of the box, including parsing HTTP requests, producing a spec-compliant response; batched queries ; persisted queries. Usage example (with plain PHP): <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([/* server options, see below */]); $server->handleRequest(); // parses PHP globals and emits response Server also supports PSR-7 request/response interfaces : <?php use GraphQL\\Server\\StandardServer; use GraphQL\\Executor\\ExecutionResult; use Psr\\Http\\Message\\ServerRequestInterface; use Psr\\Http\\Message\\ResponseInterface; use Psr\\Http\\Message\\StreamInterface; /** @var ServerRequestInterface $psrRequest */ /** @var ResponseInterface $psrResponse */ /** @var StreamInterface $psrBodyStream */ $server = new StandardServer([/* server options, see below */]); $psrResponse = $server->processPsrRequest($psrRequest, $psrResponse, $psrBodyStream); // Alternatively create PSR-7 response yourself: /** @var ExecutionResult|ExecutionResult[] $result */ $result = $server->executePsrRequest($psrRequest); $psrResponse = new SomePsr7ResponseImplementation(json_encode($result)); PSR-7 is useful when you want to integrate the server into existing framework: PSR-7 for Laravel Symfony PSR-7 Bridge Slim Zend Expressive Server configuration options Argument Type Notes schema Schema Required. Instance of your application Schema rootValue mixed Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of Query type . Can be omitted or set to null if actual root values are fetched by Query type itself. context mixed Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on Field Definitions for reference) graphql-php never modifies this value and passes it as is to all underlying resolvers. fieldResolver callable A resolver function to use when one is not provided by the schema. If not provided, the default field resolver is used . validationRules array or callable A set of rules for query validation step. The default value is all available rules. The empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution). Pass callable to return different validation rules for different queries (e.g. empty array for persisted query and a full list of rules for regular queries). When passed, it is expected to have the following signature: function ( OperationParams $params, DocumentNode $node, $operationType): array queryBatching bool Flag indicating whether this server supports query batching ( apollo-style ). Defaults to false debug int Debug flags. See docs on error debugging (flag values are the same). persistentQueryLoader callable A function which is called to fetch actual query when server encounters queryId in request vs query . The server does not implement persistence part (which you will have to build on your own), but it allows you to execute queries which were persisted previously. Expected function signature: function ($queryId, OperationParams $params) Function is expected to return query string or parsed DocumentNode Read more about persisted queries . errorFormatter callable Custom error formatter. See error handling docs . errorsHandler callable Custom errors handler. See error handling docs . promiseAdapter PromiseAdapter Required for Async PHP only. Server config instance If you prefer fluid interface for config with autocomplete in IDE and static time validation, use GraphQL\\Server\\ServerConfig instead of an array: <?php use GraphQL\\Server\\ServerConfig; use GraphQL\\Server\\StandardServer; $config = ServerConfig::create() ->setSchema($schema) ->setErrorFormatter($myFormatter) ->setDebug($debug) ; $server = new StandardServer($config); Query batching Standard Server supports query batching ( apollo-style ). One of the major benefits of Server over a sequence of executeQuery() calls is that Deferred resolvers won't be isolated in queries. So for example following batch will require single DB request (if user field is deferred): [ { \"query\": \"{user(id: 1)} { id }\" }, { \"query\": \"{user(id: 2)} { id }\" }, { \"query\": \"{user(id: 3)} { id }\" } ] To enable query batching, pass queryBatching option in server config: <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([ 'queryBatching' => true ]); Custom Validation Rules Before execution, a query is validated using a set of standard rules defined by the GraphQL spec. It is possible to override standard set of rules globally or per execution. Add rules globally: <?php use GraphQL\\Validator\\Rules; use GraphQL\\Validator\\DocumentValidator; // Add to standard set of rules globally: DocumentValidator::addRule(new Rules\\DisableIntrospection()); Custom rules per execution: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules; $myValiationRules = array_merge( GraphQL::getStandardValidationRules(), [ new Rules\\QueryComplexity(100), new Rules\\DisableIntrospection() ] ); $result = GraphQL::executeQuery( $schema, $queryString, $rootValue = null, $context = null, $variableValues = null, $operationName = null, $fieldResolver = null, $myValiationRules // <-- this will override global validation rules for this request ); Or with a standard server: <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([ 'validationRules' => $myValiationRules ]);","title":"Executing Queries"},{"location":"executing-queries/#using-facade-method","text":"Query execution is a complex process involving multiple steps, including query parsing , validating and finally executing against your schema . graphql-php provides a convenient facade for this process in class GraphQL\\GraphQL : <?php use GraphQL\\GraphQL; $result = GraphQL::executeQuery( $schema, $queryString, $rootValue = null, $context = null, $variableValues = null, $operationName = null, $fieldResolver = null, $validationRules = null ); It returns an instance of GraphQL\\Executor\\ExecutionResult which can be easily converted to array: $serializableResult = $result->toArray(); Returned array contains data and errors keys, as described by the GraphQL spec . This array is suitable for further serialization (e.g. using json_encode ). See also the section on error handling and formatting . Description of executeQuery method arguments: Argument Type Notes schema GraphQL\\Type\\Schema Required. Instance of your application Schema queryString string or GraphQL\\Language\\AST\\DocumentNode Required. Actual GraphQL query string to be parsed, validated and executed. If you parse query elsewhere before executing - pass corresponding AST document here to avoid new parsing. rootValue mixed Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of Query type . Can be omitted or set to null if actual root values are fetched by Query type itself. context mixed Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on Field Definitions for reference) graphql-php never modifies this value and passes it as is to all underlying resolvers. variableValues array Map of variable values passed along with query string. See section on query variables on official GraphQL website operationName string Allows the caller to specify which operation in queryString will be run, in cases where queryString contains multiple top-level operations. fieldResolver callable A resolver function to use when one is not provided by the schema. If not provided, the default field resolver is used . validationRules array A set of rules for query validation step. The default value is all available rules. Empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution)","title":"Using Facade Method"},{"location":"executing-queries/#using-server","text":"If you are building HTTP GraphQL API, you may prefer our Standard Server (compatible with express-graphql ). It supports more features out of the box, including parsing HTTP requests, producing a spec-compliant response; batched queries ; persisted queries. Usage example (with plain PHP): <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([/* server options, see below */]); $server->handleRequest(); // parses PHP globals and emits response Server also supports PSR-7 request/response interfaces : <?php use GraphQL\\Server\\StandardServer; use GraphQL\\Executor\\ExecutionResult; use Psr\\Http\\Message\\ServerRequestInterface; use Psr\\Http\\Message\\ResponseInterface; use Psr\\Http\\Message\\StreamInterface; /** @var ServerRequestInterface $psrRequest */ /** @var ResponseInterface $psrResponse */ /** @var StreamInterface $psrBodyStream */ $server = new StandardServer([/* server options, see below */]); $psrResponse = $server->processPsrRequest($psrRequest, $psrResponse, $psrBodyStream); // Alternatively create PSR-7 response yourself: /** @var ExecutionResult|ExecutionResult[] $result */ $result = $server->executePsrRequest($psrRequest); $psrResponse = new SomePsr7ResponseImplementation(json_encode($result)); PSR-7 is useful when you want to integrate the server into existing framework: PSR-7 for Laravel Symfony PSR-7 Bridge Slim Zend Expressive","title":"Using Server"},{"location":"executing-queries/#server-configuration-options","text":"Argument Type Notes schema Schema Required. Instance of your application Schema rootValue mixed Any value that represents a root of your data graph. It is passed as the 1st argument to field resolvers of Query type . Can be omitted or set to null if actual root values are fetched by Query type itself. context mixed Any value that holds information shared between all field resolvers. Most often they use it to pass currently logged in user, locale details, etc. It will be available as the 3rd argument in all field resolvers. (see section on Field Definitions for reference) graphql-php never modifies this value and passes it as is to all underlying resolvers. fieldResolver callable A resolver function to use when one is not provided by the schema. If not provided, the default field resolver is used . validationRules array or callable A set of rules for query validation step. The default value is all available rules. The empty array would allow skipping query validation (may be convenient for persisted queries which are validated before persisting and assumed valid during execution). Pass callable to return different validation rules for different queries (e.g. empty array for persisted query and a full list of rules for regular queries). When passed, it is expected to have the following signature: function ( OperationParams $params, DocumentNode $node, $operationType): array queryBatching bool Flag indicating whether this server supports query batching ( apollo-style ). Defaults to false debug int Debug flags. See docs on error debugging (flag values are the same). persistentQueryLoader callable A function which is called to fetch actual query when server encounters queryId in request vs query . The server does not implement persistence part (which you will have to build on your own), but it allows you to execute queries which were persisted previously. Expected function signature: function ($queryId, OperationParams $params) Function is expected to return query string or parsed DocumentNode Read more about persisted queries . errorFormatter callable Custom error formatter. See error handling docs . errorsHandler callable Custom errors handler. See error handling docs . promiseAdapter PromiseAdapter Required for Async PHP only. Server config instance If you prefer fluid interface for config with autocomplete in IDE and static time validation, use GraphQL\\Server\\ServerConfig instead of an array: <?php use GraphQL\\Server\\ServerConfig; use GraphQL\\Server\\StandardServer; $config = ServerConfig::create() ->setSchema($schema) ->setErrorFormatter($myFormatter) ->setDebug($debug) ; $server = new StandardServer($config);","title":"Server configuration options"},{"location":"executing-queries/#query-batching","text":"Standard Server supports query batching ( apollo-style ). One of the major benefits of Server over a sequence of executeQuery() calls is that Deferred resolvers won't be isolated in queries. So for example following batch will require single DB request (if user field is deferred): [ { \"query\": \"{user(id: 1)} { id }\" }, { \"query\": \"{user(id: 2)} { id }\" }, { \"query\": \"{user(id: 3)} { id }\" } ] To enable query batching, pass queryBatching option in server config: <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([ 'queryBatching' => true ]);","title":"Query batching"},{"location":"executing-queries/#custom-validation-rules","text":"Before execution, a query is validated using a set of standard rules defined by the GraphQL spec. It is possible to override standard set of rules globally or per execution. Add rules globally: <?php use GraphQL\\Validator\\Rules; use GraphQL\\Validator\\DocumentValidator; // Add to standard set of rules globally: DocumentValidator::addRule(new Rules\\DisableIntrospection()); Custom rules per execution: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules; $myValiationRules = array_merge( GraphQL::getStandardValidationRules(), [ new Rules\\QueryComplexity(100), new Rules\\DisableIntrospection() ] ); $result = GraphQL::executeQuery( $schema, $queryString, $rootValue = null, $context = null, $variableValues = null, $operationName = null, $fieldResolver = null, $myValiationRules // <-- this will override global validation rules for this request ); Or with a standard server: <?php use GraphQL\\Server\\StandardServer; $server = new StandardServer([ 'validationRules' => $myValiationRules ]);","title":"Custom Validation Rules"},{"location":"getting-started/","text":"Prerequisites This documentation assumes your familiarity with GraphQL concepts. If it is not the case - first learn about GraphQL on the official website . Installation Using composer , simply run: composer require webonyx/graphql-php Upgrading We try to keep library releases backwards compatible. But when breaking changes are inevitable they are explained in upgrade instructions . Install Tools (optional) While it is possible to communicate with GraphQL API using regular HTTP tools it is way more convenient for humans to use GraphiQL - an in-browser IDE for exploring GraphQL APIs. It provides syntax-highlighting, auto-completion and auto-generated documentation for GraphQL API. The easiest way to use it is to install one of the existing Google Chrome extensions: ChromeiQL GraphiQL Feen Alternatively, you can follow instructions on the GraphiQL page and install it locally. Hello World Let's create a type system that will be capable to process following simple query: query { echo(message: \"Hello World\") } To do so we need an object type with field echo : <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'echo' => [ 'type' => Type::string(), 'args' => [ 'message' => Type::nonNull(Type::string()), ], 'resolve' => function ($root, $args) { return $root['prefix'] . $args['message']; } ], ], ]); (Note: type definition can be expressed in different styles , but this example uses inline style for simplicity) The interesting piece here is resolve option of field definition. It is responsible for returning a value of our field. Values of scalar fields will be directly included in response while values of composite fields (objects, interfaces, unions) will be passed down to nested field resolvers (not in this example though). Now when our type is ready, let's create GraphQL endpoint file for it graphql.php : <?php use GraphQL\\GraphQL; use GraphQL\\Type\\Schema; $schema = new Schema([ 'query' => $queryType ]); $rawInput = file_get_contents('php://input'); $input = json_decode($rawInput, true); $query = $input['query']; $variableValues = isset($input['variables']) ? $input['variables'] : null; try { $rootValue = ['prefix' => 'You said: ']; $result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues); $output = $result->toArray(); } catch (\\Exception $e) { $output = [ 'errors' => [ [ 'message' => $e->getMessage() ] ] ]; } header('Content-Type: application/json'); echo json_encode($output); Our example is finished. Try it by running: php -S localhost:8080 graphql.php curl http://localhost:8080 -d '{\"query\": \"query { echo(message: \\\"Hello World\\\") }\" }' Check out the full source code of this example which also includes simple mutation. Obviously hello world only scratches the surface of what is possible. So check out next example, which is closer to real-world apps. Or keep reading about schema definition . Blog example It is often easier to start with a full-featured example and then get back to documentation for your own work. Check out Blog example of GraphQL API . It is quite close to real-world GraphQL hierarchies. Follow instructions and try it yourself in ~10 minutes.","title":"Getting Started"},{"location":"getting-started/#prerequisites","text":"This documentation assumes your familiarity with GraphQL concepts. If it is not the case - first learn about GraphQL on the official website .","title":"Prerequisites"},{"location":"getting-started/#installation","text":"Using composer , simply run: composer require webonyx/graphql-php","title":"Installation"},{"location":"getting-started/#upgrading","text":"We try to keep library releases backwards compatible. But when breaking changes are inevitable they are explained in upgrade instructions .","title":"Upgrading"},{"location":"getting-started/#install-tools-optional","text":"While it is possible to communicate with GraphQL API using regular HTTP tools it is way more convenient for humans to use GraphiQL - an in-browser IDE for exploring GraphQL APIs. It provides syntax-highlighting, auto-completion and auto-generated documentation for GraphQL API. The easiest way to use it is to install one of the existing Google Chrome extensions: ChromeiQL GraphiQL Feen Alternatively, you can follow instructions on the GraphiQL page and install it locally.","title":"Install Tools (optional)"},{"location":"getting-started/#hello-world","text":"Let's create a type system that will be capable to process following simple query: query { echo(message: \"Hello World\") } To do so we need an object type with field echo : <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'echo' => [ 'type' => Type::string(), 'args' => [ 'message' => Type::nonNull(Type::string()), ], 'resolve' => function ($root, $args) { return $root['prefix'] . $args['message']; } ], ], ]); (Note: type definition can be expressed in different styles , but this example uses inline style for simplicity) The interesting piece here is resolve option of field definition. It is responsible for returning a value of our field. Values of scalar fields will be directly included in response while values of composite fields (objects, interfaces, unions) will be passed down to nested field resolvers (not in this example though). Now when our type is ready, let's create GraphQL endpoint file for it graphql.php : <?php use GraphQL\\GraphQL; use GraphQL\\Type\\Schema; $schema = new Schema([ 'query' => $queryType ]); $rawInput = file_get_contents('php://input'); $input = json_decode($rawInput, true); $query = $input['query']; $variableValues = isset($input['variables']) ? $input['variables'] : null; try { $rootValue = ['prefix' => 'You said: ']; $result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues); $output = $result->toArray(); } catch (\\Exception $e) { $output = [ 'errors' => [ [ 'message' => $e->getMessage() ] ] ]; } header('Content-Type: application/json'); echo json_encode($output); Our example is finished. Try it by running: php -S localhost:8080 graphql.php curl http://localhost:8080 -d '{\"query\": \"query { echo(message: \\\"Hello World\\\") }\" }' Check out the full source code of this example which also includes simple mutation. Obviously hello world only scratches the surface of what is possible. So check out next example, which is closer to real-world apps. Or keep reading about schema definition .","title":"Hello World"},{"location":"getting-started/#blog-example","text":"It is often easier to start with a full-featured example and then get back to documentation for your own work. Check out Blog example of GraphQL API . It is quite close to real-world GraphQL hierarchies. Follow instructions and try it yourself in ~10 minutes.","title":"Blog example"},{"location":"how-it-works/","text":"Overview Following reading describes implementation details of query execution process. It may clarify some internals of GraphQL runtime but is not required to use it. Parsing TODOC Validating TODOC Executing TODOC Errors explained There are 3 types of errors in GraphQL: Syntax : query has invalid syntax and could not be parsed; Validation : query is incompatible with type system (e.g. unknown field is requested); Execution : occurs when some field resolver throws (or returns unexpected value). Obviously, when Syntax or Validation error is detected - the process is interrupted and the query is not executed. Execution process never throws exceptions. Instead, all errors are caught and collected in execution result. GraphQL is forgiving to Execution errors which occur in resolvers of nullable fields. If such field throws or returns unexpected value the value of the field in response will be simply replaced with null and error entry will be registered. If an exception is thrown in the non-null field - error bubbles up to the first nullable field. This nullable field is replaced with null and error entry is added to the result. If all fields up to the root are non-null - data entry will be removed from the result and only errors key will be presented.","title":"How it works"},{"location":"how-it-works/#overview","text":"Following reading describes implementation details of query execution process. It may clarify some internals of GraphQL runtime but is not required to use it.","title":"Overview"},{"location":"how-it-works/#parsing","text":"TODOC","title":"Parsing"},{"location":"how-it-works/#validating","text":"TODOC","title":"Validating"},{"location":"how-it-works/#executing","text":"TODOC","title":"Executing"},{"location":"how-it-works/#errors-explained","text":"There are 3 types of errors in GraphQL: Syntax : query has invalid syntax and could not be parsed; Validation : query is incompatible with type system (e.g. unknown field is requested); Execution : occurs when some field resolver throws (or returns unexpected value). Obviously, when Syntax or Validation error is detected - the process is interrupted and the query is not executed. Execution process never throws exceptions. Instead, all errors are caught and collected in execution result. GraphQL is forgiving to Execution errors which occur in resolvers of nullable fields. If such field throws or returns unexpected value the value of the field in response will be simply replaced with null and error entry will be registered. If an exception is thrown in the non-null field - error bubbles up to the first nullable field. This nullable field is replaced with null and error entry is added to the result. If all fields up to the root are non-null - data entry will be removed from the result and only errors key will be presented.","title":"Errors explained"},{"location":"reference/","text":"GraphQL\\GraphQL This is the primary facade for fulfilling GraphQL operations. See related documentation . Class Methods: /** * Executes graphql query. * * More sophisticated GraphQL servers, such as those which persist queries, * may wish to separate the validation and execution phases to a static time * tooling step, and a server runtime step. * * Available options: * * schema: * The GraphQL type system to use when validating and executing a query. * source: * A GraphQL language formatted string representing the requested operation. * rootValue: * The value provided as the first argument to resolver functions on the top * level type (e.g. the query object type). * context: * The value provided as the third argument to all resolvers. * Use this to pass current session, user data, etc * variableValues: * A mapping of variable name to runtime value to use for all variables * defined in the requestString. * operationName: * The name of the operation to use if requestString contains multiple * possible operations. Can be omitted if requestString contains only * one operation. * fieldResolver: * A resolver function to use when one is not provided by the schema. * If not provided, the default field resolver is used (which looks for a * value on the source value with the field's name). * validationRules: * A set of rules for query validation step. Default value is all available rules. * Empty array would allow to skip query validation (may be convenient for persisted * queries which are validated before persisting and assumed valid during execution) * * @api * @param \\GraphQL\\Type\\Schema $schema * @param string|DocumentNode $source * @param mixed $rootValue * @param mixed $context * @param array|null $variableValues * @param string|null $operationName * @param callable $fieldResolver * @param array $validationRules * * @return ExecutionResult */ static function executeQuery( GraphQL\\Type\\Schema $schema, $source, $rootValue = null, $context = null, $variableValues = null, $operationName = null, callable $fieldResolver = null, array $validationRules = null ) /** * Same as executeQuery(), but requires PromiseAdapter and always returns a Promise. * Useful for Async PHP platforms. * * @api * @param PromiseAdapter $promiseAdapter * @param \\GraphQL\\Type\\Schema $schema * @param string|DocumentNode $source * @param mixed $rootValue * @param mixed $context * @param array|null $variableValues * @param string|null $operationName * @param callable $fieldResolver * @param array $validationRules * * @return Promise */ static function promiseToExecute( GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter, GraphQL\\Type\\Schema $schema, $source, $rootValue = null, $context = null, $variableValues = null, $operationName = null, callable $fieldResolver = null, array $validationRules = null ) /** * Returns directives defined in GraphQL spec * * @api * @return Directive[] */ static function getStandardDirectives() /** * Returns types defined in GraphQL spec * * @api * @return Type[] */ static function getStandardTypes() /** * Returns standard validation rules implementing GraphQL spec * * @api * @return AbstractValidationRule[] */ static function getStandardValidationRules() GraphQL\\Type\\Definition\\Type Registry of standard GraphQL types and a base class for all other types. Class Methods: /** * @api * @return IDType */ static function id() /** * @api * @return StringType */ static function string() /** * @api * @return BooleanType */ static function boolean() /** * @api * @return IntType */ static function int() /** * @api * @return FloatType */ static function float() /** * @api * @param Type|ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType|NonNull $wrappedType * @return ListOfType */ static function listOf($wrappedType) /** * @api * @param ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType $wrappedType * @return NonNull */ static function nonNull($wrappedType) /** * @api * @param Type $type * @return bool */ static function isInputType($type) /** * @api * @param Type $type * @return bool */ static function isOutputType($type) /** * @api * @param $type * @return bool */ static function isLeafType($type) /** * @api * @param Type $type * @return bool */ static function isCompositeType($type) /** * @api * @param Type $type * @return bool */ static function isAbstractType($type) /** * @api * @param Type $type * @return bool */ static function isType($type) /** * @api * @param Type $type * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType */ static function getNullableType($type) /** * @api * @param Type $type * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType */ static function getNamedType($type) GraphQL\\Type\\Definition\\ResolveInfo Structure containing information useful for field resolution process. Passed as 3rd argument to every field resolver. See docs on field resolving (data fetching) . Class Props: /** * The name of the field being resolved * * @api * @var string */ public $fieldName; /** * AST of all nodes referencing this field in the query. * * @api * @var FieldNode[] */ public $fieldNodes; /** * Expected return type of the field being resolved * * @api * @var ScalarType|ObjectType|InterfaceType|UnionType|EnumType|ListOfType|NonNull */ public $returnType; /** * Parent type of the field being resolved * * @api * @var ObjectType */ public $parentType; /** * Path to this field from the very root value * * @api * @var array */ public $path; /** * Instance of a schema used for execution * * @api * @var Schema */ public $schema; /** * AST of all fragments defined in query * * @api * @var FragmentDefinitionNode[] */ public $fragments; /** * Root value passed to query execution * * @api * @var mixed */ public $rootValue; /** * AST of operation definition node (query, mutation) * * @api * @var OperationDefinitionNode */ public $operation; /** * Array of variables passed to query execution * * @api * @var array */ public $variableValues; Class Methods: /** * Helper method that returns names of all fields selected in query for * $this->fieldName up to $depth levels * * Example: * query MyQuery{ * { * root { * id, * nested { * nested1 * nested2 { * nested3 * } * } * } * } * * Given this ResolveInfo instance is a part of \"root\" field resolution, and $depth === 1, * method will return: * [ * 'id' => true, * 'nested' => [ * nested1 => true, * nested2 => true * ] * ] * * Warning: this method it is a naive implementation which does not take into account * conditional typed fragments. So use it with care for fields of interface and union types. * * @api * @param int $depth How many levels to include in output * @return array */ function getFieldSelection($depth = 0) GraphQL\\Language\\DirectiveLocation List of available directive locations Class Constants: const QUERY = \"QUERY\"; const MUTATION = \"MUTATION\"; const SUBSCRIPTION = \"SUBSCRIPTION\"; const FIELD = \"FIELD\"; const FRAGMENT_DEFINITION = \"FRAGMENT_DEFINITION\"; const FRAGMENT_SPREAD = \"FRAGMENT_SPREAD\"; const INLINE_FRAGMENT = \"INLINE_FRAGMENT\"; const SCHEMA = \"SCHEMA\"; const SCALAR = \"SCALAR\"; const OBJECT = \"OBJECT\"; const FIELD_DEFINITION = \"FIELD_DEFINITION\"; const ARGUMENT_DEFINITION = \"ARGUMENT_DEFINITION\"; const IFACE = \"INTERFACE\"; const UNION = \"UNION\"; const ENUM = \"ENUM\"; const ENUM_VALUE = \"ENUM_VALUE\"; const INPUT_OBJECT = \"INPUT_OBJECT\"; const INPUT_FIELD_DEFINITION = \"INPUT_FIELD_DEFINITION\"; GraphQL\\Type\\SchemaConfig Schema configuration class. Could be passed directly to schema constructor. List of options accepted by create method is described in docs . Usage example: $config = SchemaConfig::create() ->setQuery($myQueryType) ->setTypeLoader($myTypeLoader); $schema = new Schema($config); Class Methods: /** * Converts an array of options to instance of SchemaConfig * (or just returns empty config when array is not passed). * * @api * @param array $options * @return SchemaConfig */ static function create(array $options = []) /** * @api * @param ObjectType $query * @return SchemaConfig */ function setQuery($query) /** * @api * @param ObjectType $mutation * @return SchemaConfig */ function setMutation($mutation) /** * @api * @param ObjectType $subscription * @return SchemaConfig */ function setSubscription($subscription) /** * @api * @param Type[]|callable $types * @return SchemaConfig */ function setTypes($types) /** * @api * @param Directive[] $directives * @return SchemaConfig */ function setDirectives(array $directives) /** * @api * @param callable $typeLoader * @return SchemaConfig */ function setTypeLoader(callable $typeLoader) /** * @api * @return ObjectType */ function getQuery() /** * @api * @return ObjectType */ function getMutation() /** * @api * @return ObjectType */ function getSubscription() /** * @api * @return Type[] */ function getTypes() /** * @api * @return Directive[] */ function getDirectives() /** * @api * @return callable */ function getTypeLoader() GraphQL\\Type\\Schema Schema Definition (see related docs ) A Schema is created by supplying the root types of each type of operation: query, mutation (optional) and subscription (optional). A schema definition is then supplied to the validator and executor. Usage Example: $schema = new GraphQL\\Type\\Schema([ 'query' => $MyAppQueryRootType, 'mutation' => $MyAppMutationRootType, ]); Or using Schema Config instance: $config = GraphQL\\Type\\SchemaConfig::create() ->setQuery($MyAppQueryRootType) ->setMutation($MyAppMutationRootType); $schema = new GraphQL\\Type\\Schema($config); Class Methods: /** * Schema constructor. * * @api * @param array|SchemaConfig $config */ function __construct($config) /** * Returns schema query type * * @api * @return ObjectType */ function getQueryType() /** * Returns schema mutation type * * @api * @return ObjectType|null */ function getMutationType() /** * Returns schema subscription * * @api * @return ObjectType|null */ function getSubscriptionType() /** * @api * @return SchemaConfig */ function getConfig() /** * Returns array of all types in this schema. Keys of this array represent type names, values are instances * of corresponding type definitions * * This operation requires full schema scan. Do not use in production environment. * * @api * @return Type[] */ function getTypeMap() /** * Returns type by it's name * * @api * @param string $name * @return Type */ function getType($name) /** * Returns all possible concrete types for given abstract type * (implementations for interfaces and members of union type for unions) * * This operation requires full schema scan. Do not use in production environment. * * @api * @param AbstractType $abstractType * @return ObjectType[] */ function getPossibleTypes(GraphQL\\Type\\Definition\\AbstractType $abstractType) /** * Returns true if object type is concrete type of given abstract type * (implementation for interfaces and members of union type for unions) * * @api * @param AbstractType $abstractType * @param ObjectType $possibleType * @return bool */ function isPossibleType( GraphQL\\Type\\Definition\\AbstractType $abstractType, GraphQL\\Type\\Definition\\ObjectType $possibleType ) /** * Returns a list of directives supported by this schema * * @api * @return Directive[] */ function getDirectives() /** * Returns instance of directive by name * * @api * @param $name * @return Directive */ function getDirective($name) /** * Validates schema. * * This operation requires full schema scan. Do not use in production environment. * * @api * @return InvariantViolation[]|Error[] */ function validate() /** * Validates schema. * * This operation requires full schema scan. Do not use in production environment. * * @api * @throws InvariantViolation */ function assertValid() GraphQL\\Language\\Parser Parses string containing GraphQL query or type definition to Abstract Syntax Tree. Class Methods: /** * Given a GraphQL source, parses it into a `GraphQL\\Language\\AST\\DocumentNode`. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * Available options: * * noLocation: boolean, * (By default, the parser creates AST nodes that know the location * in the source that they correspond to. This configuration flag * disables that behavior for performance or testing.) * * experimentalFragmentVariables: boolean, * (If enabled, the parser will understand and parse variable definitions * contained in a fragment definition. They'll be represented in the * `variableDefinitions` field of the FragmentDefinitionNode. * * The syntax is identical to normal, query-defined variables. For example: * * fragment A($var: Boolean = false) on T { * ... * } * * Note: this feature is experimental and may change or be removed in the * future.) * * @api * @param Source|string $source * @param array $options * @return DocumentNode * @throws SyntaxError */ static function parse($source, array $options = []) /** * Given a string containing a GraphQL value (ex. `[42]`), parse the AST for * that value. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * This is useful within tools that operate upon GraphQL Values directly and * in isolation of complete GraphQL documents. * * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::valueFromAST()`. * * @api * @param Source|string $source * @param array $options * @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode */ static function parseValue($source, array $options = []) /** * Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for * that type. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * This is useful within tools that operate upon GraphQL Types directly and * in isolation of complete GraphQL documents. * * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::typeFromAST()`. * * @api * @param Source|string $source * @param array $options * @return ListTypeNode|NameNode|NonNullTypeNode */ static function parseType($source, array $options = []) GraphQL\\Language\\Printer Prints AST to string. Capable of printing GraphQL queries and Type definition language. Useful for pretty-printing queries or printing back AST for logging, documentation, etc. Usage example: $query = 'query myQuery {someField}'; $ast = GraphQL\\Language\\Parser::parse($query); $printed = GraphQL\\Language\\Printer::doPrint($ast); Class Methods: /** * Prints AST to string. Capable of printing GraphQL queries and Type definition language. * * @api * @param Node $ast * @return string */ static function doPrint($ast) GraphQL\\Language\\Visitor Utility for efficient AST traversal and modification. visit() will walk through an AST using a depth first traversal, calling the visitor's enter function at each node in the traversal, and calling the leave function after visiting that node and all of it's child nodes. By returning different values from the enter and leave functions, the behavior of the visitor can be altered, including skipping over a sub-tree of the AST (by returning false), editing the AST by returning a value or null to remove the value, or to stop the whole traversal by returning BREAK. When using visit() to edit an AST, the original AST will not be modified, and a new version of the AST with the changes applied will be returned from the visit function. $editedAST = Visitor::visit($ast, [ 'enter' => function ($node, $key, $parent, $path, $ancestors) { // return // null: no action // Visitor::skipNode(): skip visiting this node // Visitor::stop(): stop visiting altogether // Visitor::removeNode(): delete this node // any value: replace this node with the returned value }, 'leave' => function ($node, $key, $parent, $path, $ancestors) { // return // null: no action // Visitor::stop(): stop visiting altogether // Visitor::removeNode(): delete this node // any value: replace this node with the returned value } ]); Alternatively to providing enter() and leave() functions, a visitor can instead provide functions named the same as the kinds of AST nodes , or enter/leave visitors at a named key, leading to four permutations of visitor API: 1) Named visitors triggered when entering a node a specific kind. Visitor::visit($ast, [ 'Kind' => function ($node) { // enter the \"Kind\" node } ]); 2) Named visitors that trigger upon entering and leaving a node of a specific kind. Visitor::visit($ast, [ 'Kind' => [ 'enter' => function ($node) { // enter the \"Kind\" node } 'leave' => function ($node) { // leave the \"Kind\" node } ] ]); 3) Generic visitors that trigger upon entering and leaving any node. Visitor::visit($ast, [ 'enter' => function ($node) { // enter any node }, 'leave' => function ($node) { // leave any node } ]); 4) Parallel visitors for entering and leaving nodes of a specific kind. Visitor::visit($ast, [ 'enter' => [ 'Kind' => function($node) { // enter the \"Kind\" node } }, 'leave' => [ 'Kind' => function ($node) { // leave the \"Kind\" node } ] ]); Class Methods: /** * Visit the AST (see class description for details) * * @api * @param Node $root * @param array $visitor * @param array $keyMap * @return Node|mixed * @throws \\Exception */ static function visit($root, $visitor, $keyMap = null) /** * Returns marker for visitor break * * @api * @return VisitorOperation */ static function stop() /** * Returns marker for skipping current node * * @api * @return VisitorOperation */ static function skipNode() /** * Returns marker for removing a node * * @api * @return VisitorOperation */ static function removeNode() GraphQL\\Language\\AST\\NodeKind Class Constants: const NAME = \"Name\"; const DOCUMENT = \"Document\"; const OPERATION_DEFINITION = \"OperationDefinition\"; const VARIABLE_DEFINITION = \"VariableDefinition\"; const VARIABLE = \"Variable\"; const SELECTION_SET = \"SelectionSet\"; const FIELD = \"Field\"; const ARGUMENT = \"Argument\"; const FRAGMENT_SPREAD = \"FragmentSpread\"; const INLINE_FRAGMENT = \"InlineFragment\"; const FRAGMENT_DEFINITION = \"FragmentDefinition\"; const INT = \"IntValue\"; const FLOAT = \"FloatValue\"; const STRING = \"StringValue\"; const BOOLEAN = \"BooleanValue\"; const ENUM = \"EnumValue\"; const NULL = \"NullValue\"; const LST = \"ListValue\"; const OBJECT = \"ObjectValue\"; const OBJECT_FIELD = \"ObjectField\"; const DIRECTIVE = \"Directive\"; const NAMED_TYPE = \"NamedType\"; const LIST_TYPE = \"ListType\"; const NON_NULL_TYPE = \"NonNullType\"; const SCHEMA_DEFINITION = \"SchemaDefinition\"; const OPERATION_TYPE_DEFINITION = \"OperationTypeDefinition\"; const SCALAR_TYPE_DEFINITION = \"ScalarTypeDefinition\"; const OBJECT_TYPE_DEFINITION = \"ObjectTypeDefinition\"; const FIELD_DEFINITION = \"FieldDefinition\"; const INPUT_VALUE_DEFINITION = \"InputValueDefinition\"; const INTERFACE_TYPE_DEFINITION = \"InterfaceTypeDefinition\"; const UNION_TYPE_DEFINITION = \"UnionTypeDefinition\"; const ENUM_TYPE_DEFINITION = \"EnumTypeDefinition\"; const ENUM_VALUE_DEFINITION = \"EnumValueDefinition\"; const INPUT_OBJECT_TYPE_DEFINITION = \"InputObjectTypeDefinition\"; const SCALAR_TYPE_EXTENSION = \"ScalarTypeExtension\"; const OBJECT_TYPE_EXTENSION = \"ObjectTypeExtension\"; const INTERFACE_TYPE_EXTENSION = \"InterfaceTypeExtension\"; const UNION_TYPE_EXTENSION = \"UnionTypeExtension\"; const ENUM_TYPE_EXTENSION = \"EnumTypeExtension\"; const INPUT_OBJECT_TYPE_EXTENSION = \"InputObjectTypeExtension\"; const DIRECTIVE_DEFINITION = \"DirectiveDefinition\"; GraphQL\\Executor\\Executor Implements the \"Evaluating requests\" section of the GraphQL specification. Class Methods: /** * Executes DocumentNode against given $schema. * * Always returns ExecutionResult and never throws. All errors which occur during operation * execution are collected in `$result->errors`. * * @api * @param Schema $schema * @param DocumentNode $ast * @param $rootValue * @param $contextValue * @param array|\\ArrayAccess $variableValues * @param null $operationName * @param callable $fieldResolver * * @return ExecutionResult|Promise */ static function execute( GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, callable $fieldResolver = null ) /** * Same as execute(), but requires promise adapter and returns a promise which is always * fulfilled with an instance of ExecutionResult and never rejected. * * Useful for async PHP platforms. * * @api * @param PromiseAdapter $promiseAdapter * @param Schema $schema * @param DocumentNode $ast * @param null $rootValue * @param null $contextValue * @param null $variableValues * @param null $operationName * @param callable|null $fieldResolver * @return Promise */ static function promiseToExecute( GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter, GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, callable $fieldResolver = null ) GraphQL\\Executor\\ExecutionResult Returned after query execution . Represents both - result of successful execution and of a failed one (with errors collected in errors prop) Could be converted to spec-compliant serializable array using toArray() Class Props: /** * Data collected from resolvers during query execution * * @api * @var array */ public $data; /** * Errors registered during query execution. * * If an error was caused by exception thrown in resolver, $error->getPrevious() would * contain original exception. * * @api * @var \\GraphQL\\Error\\Error[] */ public $errors; /** * User-defined serializable array of extensions included in serialized result. * Conforms to * * @api * @var array */ public $extensions; Class Methods: /** * Define custom error formatting (must conform to http://facebook.github.io/graphql/#sec-Errors) * * Expected signature is: function (GraphQL\\Error\\Error $error): array * * Default formatter is \"GraphQL\\Error\\FormattedError::createFromException\" * * Expected returned value must be an array: * array( * 'message' => 'errorMessage', * // ... other keys * ); * * @api * @param callable $errorFormatter * @return $this */ function setErrorFormatter(callable $errorFormatter) /** * Define custom logic for error handling (filtering, logging, etc). * * Expected handler signature is: function (array $errors, callable $formatter): array * * Default handler is: * function (array $errors, callable $formatter) { * return array_map($formatter, $errors); * } * * @api * @param callable $handler * @return $this */ function setErrorsHandler(callable $handler) /** * Converts GraphQL query result to spec-compliant serializable array using provided * errors handler and formatter. * * If debug argument is passed, output of error formatter is enriched which debugging information * (\"debugMessage\", \"trace\" keys depending on flags). * * $debug argument must be either bool (only adds \"debugMessage\" to result) or sum of flags from * GraphQL\\Error\\Debug * * @api * @param bool|int $debug * @return array */ function toArray($debug = false) GraphQL\\Executor\\Promise\\PromiseAdapter Provides a means for integration of async PHP platforms ( related docs ) Interface Methods: /** * Return true if the value is a promise or a deferred of the underlying platform * * @api * @param mixed $value * @return bool */ function isThenable($value) /** * Converts thenable of the underlying platform into GraphQL\\Executor\\Promise\\Promise instance * * @api * @param object $thenable * @return Promise */ function convertThenable($thenable) /** * Accepts our Promise wrapper, extracts adopted promise out of it and executes actual `then` logic described * in Promises/A+ specs. Then returns new wrapped instance of GraphQL\\Executor\\Promise\\Promise. * * @api * @param Promise $promise * @param callable|null $onFulfilled * @param callable|null $onRejected * * @return Promise */ function then( GraphQL\\Executor\\Promise\\Promise $promise, callable $onFulfilled = null, callable $onRejected = null ) /** * Creates a Promise * * Expected resolver signature: * function(callable $resolve, callable $reject) * * @api * @param callable $resolver * @return Promise */ function create(callable $resolver) /** * Creates a fulfilled Promise for a value if the value is not a promise. * * @api * @param mixed $value * @return Promise */ function createFulfilled($value = null) /** * Creates a rejected promise for a reason if the reason is not a promise. If * the provided reason is a promise, then it is returned as-is. * * @api * @param \\Throwable $reason * @return Promise */ function createRejected($reason) /** * Given an array of promises (or values), returns a promise that is fulfilled when all the * items in the array are fulfilled. * * @api * @param array $promisesOrValues Promises or values. * @return Promise */ function all(array $promisesOrValues) GraphQL\\Validator\\DocumentValidator Implements the \"Validation\" section of the spec. Validation runs synchronously, returning an array of encountered errors, or an empty array if no errors were encountered and the document is valid. A list of specific validation rules may be provided. If not provided, the default list of rules defined by the GraphQL specification will be used. Each validation rule is an instance of GraphQL\\Validator\\Rules\\AbstractValidationRule which returns a visitor (see the GraphQL\\Language\\Visitor API ). Visitor methods are expected to return an instance of GraphQL\\Error\\Error , or array of such instances when invalid. Optionally a custom TypeInfo instance may be provided. If not provided, one will be created from the provided schema. Class Methods: /** * Primary method for query validation. See class description for details. * * @api * @param Schema $schema * @param DocumentNode $ast * @param AbstractValidationRule[]|null $rules * @param TypeInfo|null $typeInfo * @return Error[] */ static function validate( GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, array $rules = null, GraphQL\\Utils\\TypeInfo $typeInfo = null ) /** * Returns all global validation rules. * * @api * @return AbstractValidationRule[] */ static function allRules() /** * Returns global validation rule by name. Standard rules are named by class name, so * example usage for such rules: * * $rule = DocumentValidator::getRule(GraphQL\\Validator\\Rules\\QueryComplexity::class); * * @api * @param string $name * @return AbstractValidationRule */ static function getRule($name) /** * Add rule to list of global validation rules * * @api * @param AbstractValidationRule $rule */ static function addRule(GraphQL\\Validator\\Rules\\AbstractValidationRule $rule) GraphQL\\Error\\Error Describes an Error found during the parse, validate, or execute phases of performing a GraphQL operation. In addition to a message and stack trace, it also includes information about the locations in a GraphQL document and/or execution result that correspond to the Error. When the error was caused by an exception thrown in resolver, original exception is available via getPrevious() . Also read related docs on error handling Class extends standard PHP \\Exception , so all standard methods of base \\Exception class are available in addition to those listed below. Class Constants: const CATEGORY_GRAPHQL = \"graphql\"; const CATEGORY_INTERNAL = \"internal\"; Class Methods: /** * An array of locations within the source GraphQL document which correspond to this error. * * Each entry has information about `line` and `column` within source GraphQL document: * $location->line; * $location->column; * * Errors during validation often contain multiple locations, for example to * point out to field mentioned in multiple fragments. Errors during execution include a * single location, the field which produced the error. * * @api * @return SourceLocation[] */ function getLocations() /** * Returns an array describing the path from the root value to the field which produced this error. * Only included for execution errors. * * @api * @return array|null */ function getPath() GraphQL\\Error\\Warning Encapsulates warnings produced by the library. Warnings can be suppressed (individually or all) if required. Also it is possible to override warning handler (which is trigger_error() by default) Class Constants: const WARNING_ASSIGN = 2; const WARNING_CONFIG = 4; const WARNING_FULL_SCHEMA_SCAN = 8; const WARNING_CONFIG_DEPRECATION = 16; const WARNING_NOT_A_TYPE = 32; const ALL = 63; Class Methods: /** * Sets warning handler which can intercept all system warnings. * When not set, trigger_error() is used to notify about warnings. * * @api * @param callable|null $warningHandler */ static function setWarningHandler(callable $warningHandler = null) /** * Suppress warning by id (has no effect when custom warning handler is set) * * Usage example: * Warning::suppress(Warning::WARNING_NOT_A_TYPE) * * When passing true - suppresses all warnings. * * @api * @param bool|int $suppress */ static function suppress($suppress = true) /** * Re-enable previously suppressed warning by id * * Usage example: * Warning::suppress(Warning::WARNING_NOT_A_TYPE) * * When passing true - re-enables all warnings. * * @api * @param bool|int $enable */ static function enable($enable = true) GraphQL\\Error\\ClientAware This interface is used for default error formatting . Only errors implementing this interface (and returning true from isClientSafe() ) will be formatted with original error message. All other errors will be formatted with generic \"Internal server error\". Interface Methods: /** * Returns true when exception message is safe to be displayed to a client. * * @api * @return bool */ function isClientSafe() /** * Returns string describing a category of the error. * * Value \"graphql\" is reserved for errors produced by query parsing or validation, do not use it. * * @api * @return string */ function getCategory() GraphQL\\Error\\Debug Collection of flags for error debugging . Class Constants: const INCLUDE_DEBUG_MESSAGE = 1; const INCLUDE_TRACE = 2; const RETHROW_INTERNAL_EXCEPTIONS = 4; GraphQL\\Error\\FormattedError This class is used for default error formatting . It converts PHP exceptions to spec-compliant errors and provides tools for error debugging. Class Methods: /** * Set default error message for internal errors formatted using createFormattedError(). * This value can be overridden by passing 3rd argument to `createFormattedError()`. * * @api * @param string $msg */ static function setInternalErrorMessage($msg) /** * Standard GraphQL error formatter. Converts any exception to array * conforming to GraphQL spec. * * This method only exposes exception message when exception implements ClientAware interface * (or when debug flags are passed). * * For a list of available debug flags see GraphQL\\Error\\Debug constants. * * @api * @param \\Throwable $e * @param bool|int $debug * @param string $internalErrorMessage * @return array * @throws \\Throwable */ static function createFromException($e, $debug = false, $internalErrorMessage = null) /** * Returns error trace as serializable array * * @api * @param \\Throwable $error * @return array */ static function toSafeTrace($error) GraphQL\\Server\\StandardServer GraphQL server compatible with both: express-graphql and Apollo Server . Usage Example: $server = new StandardServer([ 'schema' => $mySchema ]); $server->handleRequest(); Or using ServerConfig instance: $config = GraphQL\\Server\\ServerConfig::create() ->setSchema($mySchema) ->setContext($myContext); $server = new GraphQL\\Server\\StandardServer($config); $server->handleRequest(); See dedicated section in docs for details. Class Methods: /** * Converts and exception to error and sends spec-compliant HTTP 500 error. * Useful when an exception is thrown somewhere outside of server execution context * (e.g. during schema instantiation). * * @api * @param \\Throwable $error * @param bool $debug * @param bool $exitWhenDone */ static function send500Error($error, $debug = false, $exitWhenDone = false) /** * Creates new instance of a standard GraphQL HTTP server * * @api * @param ServerConfig|array $config */ function __construct($config) /** * Parses HTTP request, executes and emits response (using standard PHP `header` function and `echo`) * * By default (when $parsedBody is not set) it uses PHP globals to parse a request. * It is possible to implement request parsing elsewhere (e.g. using framework Request instance) * and then pass it to the server. * * See `executeRequest()` if you prefer to emit response yourself * (e.g. using Response object of some framework) * * @api * @param OperationParams|OperationParams[] $parsedBody * @param bool $exitWhenDone */ function handleRequest($parsedBody = null, $exitWhenDone = false) /** * Executes GraphQL operation and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter). * * By default (when $parsedBody is not set) it uses PHP globals to parse a request. * It is possible to implement request parsing elsewhere (e.g. using framework Request instance) * and then pass it to the server. * * PSR-7 compatible method executePsrRequest() does exactly this. * * @api * @param OperationParams|OperationParams[] $parsedBody * @return ExecutionResult|ExecutionResult[]|Promise * @throws InvariantViolation */ function executeRequest($parsedBody = null) /** * Executes PSR-7 request and fulfills PSR-7 response. * * See `executePsrRequest()` if you prefer to create response yourself * (e.g. using specific JsonResponse instance of some framework). * * @api * @param ServerRequestInterface $request * @param ResponseInterface $response * @param StreamInterface $writableBodyStream * @return ResponseInterface|Promise */ function processPsrRequest( Psr\\Http\\Message\\ServerRequestInterface $request, Psr\\Http\\Message\\ResponseInterface $response, Psr\\Http\\Message\\StreamInterface $writableBodyStream ) /** * Executes GraphQL operation and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter) * * @api * @param ServerRequestInterface $request * @return ExecutionResult|ExecutionResult[]|Promise */ function executePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request) /** * Returns an instance of Server helper, which contains most of the actual logic for * parsing / validating / executing request (which could be re-used by other server implementations) * * @api * @return Helper */ function getHelper() GraphQL\\Server\\ServerConfig Server configuration class. Could be passed directly to server constructor. List of options accepted by create method is described in docs . Usage example: $config = GraphQL\\Server\\ServerConfig::create() ->setSchema($mySchema) ->setContext($myContext); $server = new GraphQL\\Server\\StandardServer($config); Class Methods: /** * Converts an array of options to instance of ServerConfig * (or just returns empty config when array is not passed). * * @api * @param array $config * @return ServerConfig */ static function create(array $config = []) /** * @api * @param Schema $schema * @return $this */ function setSchema(GraphQL\\Type\\Schema $schema) /** * @api * @param mixed|\\Closure $context * @return $this */ function setContext($context) /** * @api * @param mixed|\\Closure $rootValue * @return $this */ function setRootValue($rootValue) /** * Expects function(Throwable $e) : array * * @api * @param callable $errorFormatter * @return $this */ function setErrorFormatter(callable $errorFormatter) /** * Expects function(array $errors, callable $formatter) : array * * @api * @param callable $handler * @return $this */ function setErrorsHandler(callable $handler) /** * Set validation rules for this server. * * @api * @param array|callable * @return $this */ function setValidationRules($validationRules) /** * @api * @param callable $fieldResolver * @return $this */ function setFieldResolver(callable $fieldResolver) /** * Expects function($queryId, OperationParams $params) : string|DocumentNode * * This function must return query string or valid DocumentNode. * * @api * @param callable $persistentQueryLoader * @return $this */ function setPersistentQueryLoader(callable $persistentQueryLoader) /** * Set response debug flags. See GraphQL\\Error\\Debug class for a list of all available flags * * @api * @param bool|int $set * @return $this */ function setDebug($set = true) /** * Allow batching queries (disabled by default) * * @api * @param bool $enableBatching * @return $this */ function setQueryBatching($enableBatching) /** * @api * @param PromiseAdapter $promiseAdapter * @return $this */ function setPromiseAdapter(GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter) GraphQL\\Server\\Helper Contains functionality that could be re-used by various server implementations Class Methods: /** * Parses HTTP request using PHP globals and returns GraphQL OperationParams * contained in this request. For batched requests it returns an array of OperationParams. * * This function does not check validity of these params * (validation is performed separately in validateOperationParams() method). * * If $readRawBodyFn argument is not provided - will attempt to read raw request body * from `php://input` stream. * * Internally it normalizes input to $method, $bodyParams and $queryParams and * calls `parseRequestParams()` to produce actual return value. * * For PSR-7 request parsing use `parsePsrRequest()` instead. * * @api * @param callable|null $readRawBodyFn * @return OperationParams|OperationParams[] * @throws RequestError */ function parseHttpRequest(callable $readRawBodyFn = null) /** * Parses normalized request params and returns instance of OperationParams * or array of OperationParams in case of batch operation. * * Returned value is a suitable input for `executeOperation` or `executeBatch` (if array) * * @api * @param string $method * @param array $bodyParams * @param array $queryParams * @return OperationParams|OperationParams[] * @throws RequestError */ function parseRequestParams($method, array $bodyParams, array $queryParams) /** * Checks validity of OperationParams extracted from HTTP request and returns an array of errors * if params are invalid (or empty array when params are valid) * * @api * @param OperationParams $params * @return Error[] */ function validateOperationParams(GraphQL\\Server\\OperationParams $params) /** * Executes GraphQL operation with given server configuration and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter) * * @api * @param ServerConfig $config * @param OperationParams $op * * @return ExecutionResult|Promise */ function executeOperation(GraphQL\\Server\\ServerConfig $config, GraphQL\\Server\\OperationParams $op) /** * Executes batched GraphQL operations with shared promise queue * (thus, effectively batching deferreds|promises of all queries at once) * * @api * @param ServerConfig $config * @param OperationParams[] $operations * @return ExecutionResult[]|Promise */ function executeBatch(GraphQL\\Server\\ServerConfig $config, array $operations) /** * Send response using standard PHP `header()` and `echo`. * * @api * @param Promise|ExecutionResult|ExecutionResult[] $result * @param bool $exitWhenDone */ function sendResponse($result, $exitWhenDone = false) /** * Converts PSR-7 request to OperationParams[] * * @api * @param ServerRequestInterface $request * @return array|Helper * @throws RequestError */ function parsePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request) /** * Converts query execution result to PSR-7 response * * @api * @param Promise|ExecutionResult|ExecutionResult[] $result * @param ResponseInterface $response * @param StreamInterface $writableBodyStream * @return Promise|ResponseInterface */ function toPsrResponse( $result, Psr\\Http\\Message\\ResponseInterface $response, Psr\\Http\\Message\\StreamInterface $writableBodyStream ) GraphQL\\Server\\OperationParams Structure representing parsed HTTP parameters for GraphQL operation Class Props: /** * Id of the query (when using persistent queries). * * Valid aliases (case-insensitive): * - id * - queryId * - documentId * * @api * @var string */ public $queryId; /** * @api * @var string */ public $query; /** * @api * @var string */ public $operation; /** * @api * @var array */ public $variables; Class Methods: /** * Creates an instance from given array * * @api * @param array $params * @param bool $readonly * @return OperationParams */ static function create(array $params, $readonly = false) /** * @api * @param string $key * @return mixed */ function getOriginalInput($key) /** * Indicates that operation is executed in read-only context * (e.g. via HTTP GET request) * * @api * @return bool */ function isReadOnly() GraphQL\\Utils\\BuildSchema Build instance of GraphQL\\Type\\Schema out of type language definition (string or parsed AST) See section in docs for details. Class Methods: /** * This takes the ast of a schema document produced by the parse function in * GraphQL\\Language\\Parser. * * If no schema definition is provided, then it will look for types named Query * and Mutation. * * Given that AST it constructs a GraphQL\\Type\\Schema. The resulting schema * has no resolve methods, so execution will use default resolvers. * * Accepts options as a second argument: * * - commentDescriptions: * Provide true to use preceding comments as the description. * * * @api * @param DocumentNode $ast * @param array $options * @return Schema * @throws Error */ static function buildAST(GraphQL\\Language\\AST\\DocumentNode $ast, array $options = []) /** * A helper function to build a GraphQLSchema directly from a source * document. * * @api * @param DocumentNode|Source|string $source * @param array $options * @return Schema */ static function build($source, array $options = []) GraphQL\\Utils\\AST Various utilities dealing with AST Class Methods: /** * Convert representation of AST as an associative array to instance of GraphQL\\Language\\AST\\Node. * * For example: * * ```php * AST::fromArray([ * 'kind' => 'ListValue', * 'values' => [ * ['kind' => 'StringValue', 'value' => 'my str'], * ['kind' => 'StringValue', 'value' => 'my other str'] * ], * 'loc' => ['start' => 21, 'end' => 25] * ]); * ``` * * Will produce instance of `ListValueNode` where `values` prop is a lazily-evaluated `NodeList` * returning instances of `StringValueNode` on access. * * This is a reverse operation for AST::toArray($node) * * @api * @param array $node * @return Node */ static function fromArray(array $node) /** * Convert AST node to serializable array * * @api * @param Node $node * @return array */ static function toArray(GraphQL\\Language\\AST\\Node $node) /** * Produces a GraphQL Value AST given a PHP value. * * Optionally, a GraphQL type may be provided, which will be used to * disambiguate between value primitives. * * | PHP Value | GraphQL Value | * | ------------- | -------------------- | * | Object | Input Object | * | Assoc Array | Input Object | * | Array | List | * | Boolean | Boolean | * | String | String / Enum Value | * | Int | Int | * | Float | Int / Float | * | Mixed | Enum Value | * | null | NullValue | * * @api * @param $value * @param InputType $type * @return ObjectValueNode|ListValueNode|BooleanValueNode|IntValueNode|FloatValueNode|EnumValueNode|StringValueNode|NullValueNode */ static function astFromValue($value, GraphQL\\Type\\Definition\\InputType $type) /** * Produces a PHP value given a GraphQL Value AST. * * A GraphQL type must be provided, which will be used to interpret different * GraphQL Value literals. * * Returns `null` when the value could not be validly coerced according to * the provided type. * * | GraphQL Value | PHP Value | * | -------------------- | ------------- | * | Input Object | Assoc Array | * | List | Array | * | Boolean | Boolean | * | String | String | * | Int / Float | Int / Float | * | Enum Value | Mixed | * | Null Value | null | * * @api * @param $valueNode * @param InputType $type * @param null $variables * @return array|null|\\stdClass * @throws \\Exception */ static function valueFromAST($valueNode, GraphQL\\Type\\Definition\\InputType $type, $variables = null) /** * Produces a PHP value given a GraphQL Value AST. * * Unlike `valueFromAST()`, no type is provided. The resulting JavaScript value * will reflect the provided GraphQL value AST. * * | GraphQL Value | PHP Value | * | -------------------- | ------------- | * | Input Object | Assoc Array | * | List | Array | * | Boolean | Boolean | * | String | String | * | Int / Float | Int / Float | * | Enum | Mixed | * | Null | null | * * @api * @param Node $valueNode * @param array|null $variables * @return mixed * @throws \\Exception */ static function valueFromASTUntyped($valueNode, array $variables = null) /** * Returns type definition for given AST Type node * * @api * @param Schema $schema * @param NamedTypeNode|ListTypeNode|NonNullTypeNode $inputTypeNode * @return Type * @throws \\Exception */ static function typeFromAST(GraphQL\\Type\\Schema $schema, $inputTypeNode) /** * Returns operation type (\"query\", \"mutation\" or \"subscription\") given a document and operation name * * @api * @param DocumentNode $document * @param string $operationName * @return bool */ static function getOperation(GraphQL\\Language\\AST\\DocumentNode $document, $operationName = null) GraphQL\\Utils\\SchemaPrinter Given an instance of Schema, prints it in GraphQL type language. Class Methods: /** * Accepts options as a second argument: * * - commentDescriptions: * Provide true to use preceding comments as the description. * @api * @param Schema $schema * @return string */ static function doPrint(GraphQL\\Type\\Schema $schema, array $options = []) /** * @api * @param Schema $schema * @return string */ static function printIntrosepctionSchema(GraphQL\\Type\\Schema $schema, array $options = [])","title":"Class Reference"},{"location":"reference/#graphqlgraphql","text":"This is the primary facade for fulfilling GraphQL operations. See related documentation . Class Methods: /** * Executes graphql query. * * More sophisticated GraphQL servers, such as those which persist queries, * may wish to separate the validation and execution phases to a static time * tooling step, and a server runtime step. * * Available options: * * schema: * The GraphQL type system to use when validating and executing a query. * source: * A GraphQL language formatted string representing the requested operation. * rootValue: * The value provided as the first argument to resolver functions on the top * level type (e.g. the query object type). * context: * The value provided as the third argument to all resolvers. * Use this to pass current session, user data, etc * variableValues: * A mapping of variable name to runtime value to use for all variables * defined in the requestString. * operationName: * The name of the operation to use if requestString contains multiple * possible operations. Can be omitted if requestString contains only * one operation. * fieldResolver: * A resolver function to use when one is not provided by the schema. * If not provided, the default field resolver is used (which looks for a * value on the source value with the field's name). * validationRules: * A set of rules for query validation step. Default value is all available rules. * Empty array would allow to skip query validation (may be convenient for persisted * queries which are validated before persisting and assumed valid during execution) * * @api * @param \\GraphQL\\Type\\Schema $schema * @param string|DocumentNode $source * @param mixed $rootValue * @param mixed $context * @param array|null $variableValues * @param string|null $operationName * @param callable $fieldResolver * @param array $validationRules * * @return ExecutionResult */ static function executeQuery( GraphQL\\Type\\Schema $schema, $source, $rootValue = null, $context = null, $variableValues = null, $operationName = null, callable $fieldResolver = null, array $validationRules = null ) /** * Same as executeQuery(), but requires PromiseAdapter and always returns a Promise. * Useful for Async PHP platforms. * * @api * @param PromiseAdapter $promiseAdapter * @param \\GraphQL\\Type\\Schema $schema * @param string|DocumentNode $source * @param mixed $rootValue * @param mixed $context * @param array|null $variableValues * @param string|null $operationName * @param callable $fieldResolver * @param array $validationRules * * @return Promise */ static function promiseToExecute( GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter, GraphQL\\Type\\Schema $schema, $source, $rootValue = null, $context = null, $variableValues = null, $operationName = null, callable $fieldResolver = null, array $validationRules = null ) /** * Returns directives defined in GraphQL spec * * @api * @return Directive[] */ static function getStandardDirectives() /** * Returns types defined in GraphQL spec * * @api * @return Type[] */ static function getStandardTypes() /** * Returns standard validation rules implementing GraphQL spec * * @api * @return AbstractValidationRule[] */ static function getStandardValidationRules()","title":"GraphQL\\GraphQL"},{"location":"reference/#graphqltypedefinitiontype","text":"Registry of standard GraphQL types and a base class for all other types. Class Methods: /** * @api * @return IDType */ static function id() /** * @api * @return StringType */ static function string() /** * @api * @return BooleanType */ static function boolean() /** * @api * @return IntType */ static function int() /** * @api * @return FloatType */ static function float() /** * @api * @param Type|ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType|NonNull $wrappedType * @return ListOfType */ static function listOf($wrappedType) /** * @api * @param ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType $wrappedType * @return NonNull */ static function nonNull($wrappedType) /** * @api * @param Type $type * @return bool */ static function isInputType($type) /** * @api * @param Type $type * @return bool */ static function isOutputType($type) /** * @api * @param $type * @return bool */ static function isLeafType($type) /** * @api * @param Type $type * @return bool */ static function isCompositeType($type) /** * @api * @param Type $type * @return bool */ static function isAbstractType($type) /** * @api * @param Type $type * @return bool */ static function isType($type) /** * @api * @param Type $type * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType|ListOfType */ static function getNullableType($type) /** * @api * @param Type $type * @return ObjectType|InterfaceType|UnionType|ScalarType|InputObjectType|EnumType */ static function getNamedType($type)","title":"GraphQL\\Type\\Definition\\Type"},{"location":"reference/#graphqltypedefinitionresolveinfo","text":"Structure containing information useful for field resolution process. Passed as 3rd argument to every field resolver. See docs on field resolving (data fetching) . Class Props: /** * The name of the field being resolved * * @api * @var string */ public $fieldName; /** * AST of all nodes referencing this field in the query. * * @api * @var FieldNode[] */ public $fieldNodes; /** * Expected return type of the field being resolved * * @api * @var ScalarType|ObjectType|InterfaceType|UnionType|EnumType|ListOfType|NonNull */ public $returnType; /** * Parent type of the field being resolved * * @api * @var ObjectType */ public $parentType; /** * Path to this field from the very root value * * @api * @var array */ public $path; /** * Instance of a schema used for execution * * @api * @var Schema */ public $schema; /** * AST of all fragments defined in query * * @api * @var FragmentDefinitionNode[] */ public $fragments; /** * Root value passed to query execution * * @api * @var mixed */ public $rootValue; /** * AST of operation definition node (query, mutation) * * @api * @var OperationDefinitionNode */ public $operation; /** * Array of variables passed to query execution * * @api * @var array */ public $variableValues; Class Methods: /** * Helper method that returns names of all fields selected in query for * $this->fieldName up to $depth levels * * Example: * query MyQuery{ * { * root { * id, * nested { * nested1 * nested2 { * nested3 * } * } * } * } * * Given this ResolveInfo instance is a part of \"root\" field resolution, and $depth === 1, * method will return: * [ * 'id' => true, * 'nested' => [ * nested1 => true, * nested2 => true * ] * ] * * Warning: this method it is a naive implementation which does not take into account * conditional typed fragments. So use it with care for fields of interface and union types. * * @api * @param int $depth How many levels to include in output * @return array */ function getFieldSelection($depth = 0)","title":"GraphQL\\Type\\Definition\\ResolveInfo"},{"location":"reference/#graphqllanguagedirectivelocation","text":"List of available directive locations Class Constants: const QUERY = \"QUERY\"; const MUTATION = \"MUTATION\"; const SUBSCRIPTION = \"SUBSCRIPTION\"; const FIELD = \"FIELD\"; const FRAGMENT_DEFINITION = \"FRAGMENT_DEFINITION\"; const FRAGMENT_SPREAD = \"FRAGMENT_SPREAD\"; const INLINE_FRAGMENT = \"INLINE_FRAGMENT\"; const SCHEMA = \"SCHEMA\"; const SCALAR = \"SCALAR\"; const OBJECT = \"OBJECT\"; const FIELD_DEFINITION = \"FIELD_DEFINITION\"; const ARGUMENT_DEFINITION = \"ARGUMENT_DEFINITION\"; const IFACE = \"INTERFACE\"; const UNION = \"UNION\"; const ENUM = \"ENUM\"; const ENUM_VALUE = \"ENUM_VALUE\"; const INPUT_OBJECT = \"INPUT_OBJECT\"; const INPUT_FIELD_DEFINITION = \"INPUT_FIELD_DEFINITION\";","title":"GraphQL\\Language\\DirectiveLocation"},{"location":"reference/#graphqltypeschemaconfig","text":"Schema configuration class. Could be passed directly to schema constructor. List of options accepted by create method is described in docs . Usage example: $config = SchemaConfig::create() ->setQuery($myQueryType) ->setTypeLoader($myTypeLoader); $schema = new Schema($config); Class Methods: /** * Converts an array of options to instance of SchemaConfig * (or just returns empty config when array is not passed). * * @api * @param array $options * @return SchemaConfig */ static function create(array $options = []) /** * @api * @param ObjectType $query * @return SchemaConfig */ function setQuery($query) /** * @api * @param ObjectType $mutation * @return SchemaConfig */ function setMutation($mutation) /** * @api * @param ObjectType $subscription * @return SchemaConfig */ function setSubscription($subscription) /** * @api * @param Type[]|callable $types * @return SchemaConfig */ function setTypes($types) /** * @api * @param Directive[] $directives * @return SchemaConfig */ function setDirectives(array $directives) /** * @api * @param callable $typeLoader * @return SchemaConfig */ function setTypeLoader(callable $typeLoader) /** * @api * @return ObjectType */ function getQuery() /** * @api * @return ObjectType */ function getMutation() /** * @api * @return ObjectType */ function getSubscription() /** * @api * @return Type[] */ function getTypes() /** * @api * @return Directive[] */ function getDirectives() /** * @api * @return callable */ function getTypeLoader()","title":"GraphQL\\Type\\SchemaConfig"},{"location":"reference/#graphqltypeschema","text":"Schema Definition (see related docs ) A Schema is created by supplying the root types of each type of operation: query, mutation (optional) and subscription (optional). A schema definition is then supplied to the validator and executor. Usage Example: $schema = new GraphQL\\Type\\Schema([ 'query' => $MyAppQueryRootType, 'mutation' => $MyAppMutationRootType, ]); Or using Schema Config instance: $config = GraphQL\\Type\\SchemaConfig::create() ->setQuery($MyAppQueryRootType) ->setMutation($MyAppMutationRootType); $schema = new GraphQL\\Type\\Schema($config); Class Methods: /** * Schema constructor. * * @api * @param array|SchemaConfig $config */ function __construct($config) /** * Returns schema query type * * @api * @return ObjectType */ function getQueryType() /** * Returns schema mutation type * * @api * @return ObjectType|null */ function getMutationType() /** * Returns schema subscription * * @api * @return ObjectType|null */ function getSubscriptionType() /** * @api * @return SchemaConfig */ function getConfig() /** * Returns array of all types in this schema. Keys of this array represent type names, values are instances * of corresponding type definitions * * This operation requires full schema scan. Do not use in production environment. * * @api * @return Type[] */ function getTypeMap() /** * Returns type by it's name * * @api * @param string $name * @return Type */ function getType($name) /** * Returns all possible concrete types for given abstract type * (implementations for interfaces and members of union type for unions) * * This operation requires full schema scan. Do not use in production environment. * * @api * @param AbstractType $abstractType * @return ObjectType[] */ function getPossibleTypes(GraphQL\\Type\\Definition\\AbstractType $abstractType) /** * Returns true if object type is concrete type of given abstract type * (implementation for interfaces and members of union type for unions) * * @api * @param AbstractType $abstractType * @param ObjectType $possibleType * @return bool */ function isPossibleType( GraphQL\\Type\\Definition\\AbstractType $abstractType, GraphQL\\Type\\Definition\\ObjectType $possibleType ) /** * Returns a list of directives supported by this schema * * @api * @return Directive[] */ function getDirectives() /** * Returns instance of directive by name * * @api * @param $name * @return Directive */ function getDirective($name) /** * Validates schema. * * This operation requires full schema scan. Do not use in production environment. * * @api * @return InvariantViolation[]|Error[] */ function validate() /** * Validates schema. * * This operation requires full schema scan. Do not use in production environment. * * @api * @throws InvariantViolation */ function assertValid()","title":"GraphQL\\Type\\Schema"},{"location":"reference/#graphqllanguageparser","text":"Parses string containing GraphQL query or type definition to Abstract Syntax Tree. Class Methods: /** * Given a GraphQL source, parses it into a `GraphQL\\Language\\AST\\DocumentNode`. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * Available options: * * noLocation: boolean, * (By default, the parser creates AST nodes that know the location * in the source that they correspond to. This configuration flag * disables that behavior for performance or testing.) * * experimentalFragmentVariables: boolean, * (If enabled, the parser will understand and parse variable definitions * contained in a fragment definition. They'll be represented in the * `variableDefinitions` field of the FragmentDefinitionNode. * * The syntax is identical to normal, query-defined variables. For example: * * fragment A($var: Boolean = false) on T { * ... * } * * Note: this feature is experimental and may change or be removed in the * future.) * * @api * @param Source|string $source * @param array $options * @return DocumentNode * @throws SyntaxError */ static function parse($source, array $options = []) /** * Given a string containing a GraphQL value (ex. `[42]`), parse the AST for * that value. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * This is useful within tools that operate upon GraphQL Values directly and * in isolation of complete GraphQL documents. * * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::valueFromAST()`. * * @api * @param Source|string $source * @param array $options * @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode */ static function parseValue($source, array $options = []) /** * Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for * that type. * Throws `GraphQL\\Error\\SyntaxError` if a syntax error is encountered. * * This is useful within tools that operate upon GraphQL Types directly and * in isolation of complete GraphQL documents. * * Consider providing the results to the utility function: `GraphQL\\Utils\\AST::typeFromAST()`. * * @api * @param Source|string $source * @param array $options * @return ListTypeNode|NameNode|NonNullTypeNode */ static function parseType($source, array $options = [])","title":"GraphQL\\Language\\Parser"},{"location":"reference/#graphqllanguageprinter","text":"Prints AST to string. Capable of printing GraphQL queries and Type definition language. Useful for pretty-printing queries or printing back AST for logging, documentation, etc. Usage example: $query = 'query myQuery {someField}'; $ast = GraphQL\\Language\\Parser::parse($query); $printed = GraphQL\\Language\\Printer::doPrint($ast); Class Methods: /** * Prints AST to string. Capable of printing GraphQL queries and Type definition language. * * @api * @param Node $ast * @return string */ static function doPrint($ast)","title":"GraphQL\\Language\\Printer"},{"location":"reference/#graphqllanguagevisitor","text":"Utility for efficient AST traversal and modification. visit() will walk through an AST using a depth first traversal, calling the visitor's enter function at each node in the traversal, and calling the leave function after visiting that node and all of it's child nodes. By returning different values from the enter and leave functions, the behavior of the visitor can be altered, including skipping over a sub-tree of the AST (by returning false), editing the AST by returning a value or null to remove the value, or to stop the whole traversal by returning BREAK. When using visit() to edit an AST, the original AST will not be modified, and a new version of the AST with the changes applied will be returned from the visit function. $editedAST = Visitor::visit($ast, [ 'enter' => function ($node, $key, $parent, $path, $ancestors) { // return // null: no action // Visitor::skipNode(): skip visiting this node // Visitor::stop(): stop visiting altogether // Visitor::removeNode(): delete this node // any value: replace this node with the returned value }, 'leave' => function ($node, $key, $parent, $path, $ancestors) { // return // null: no action // Visitor::stop(): stop visiting altogether // Visitor::removeNode(): delete this node // any value: replace this node with the returned value } ]); Alternatively to providing enter() and leave() functions, a visitor can instead provide functions named the same as the kinds of AST nodes , or enter/leave visitors at a named key, leading to four permutations of visitor API: 1) Named visitors triggered when entering a node a specific kind. Visitor::visit($ast, [ 'Kind' => function ($node) { // enter the \"Kind\" node } ]); 2) Named visitors that trigger upon entering and leaving a node of a specific kind. Visitor::visit($ast, [ 'Kind' => [ 'enter' => function ($node) { // enter the \"Kind\" node } 'leave' => function ($node) { // leave the \"Kind\" node } ] ]); 3) Generic visitors that trigger upon entering and leaving any node. Visitor::visit($ast, [ 'enter' => function ($node) { // enter any node }, 'leave' => function ($node) { // leave any node } ]); 4) Parallel visitors for entering and leaving nodes of a specific kind. Visitor::visit($ast, [ 'enter' => [ 'Kind' => function($node) { // enter the \"Kind\" node } }, 'leave' => [ 'Kind' => function ($node) { // leave the \"Kind\" node } ] ]); Class Methods: /** * Visit the AST (see class description for details) * * @api * @param Node $root * @param array $visitor * @param array $keyMap * @return Node|mixed * @throws \\Exception */ static function visit($root, $visitor, $keyMap = null) /** * Returns marker for visitor break * * @api * @return VisitorOperation */ static function stop() /** * Returns marker for skipping current node * * @api * @return VisitorOperation */ static function skipNode() /** * Returns marker for removing a node * * @api * @return VisitorOperation */ static function removeNode()","title":"GraphQL\\Language\\Visitor"},{"location":"reference/#graphqllanguageastnodekind","text":"Class Constants: const NAME = \"Name\"; const DOCUMENT = \"Document\"; const OPERATION_DEFINITION = \"OperationDefinition\"; const VARIABLE_DEFINITION = \"VariableDefinition\"; const VARIABLE = \"Variable\"; const SELECTION_SET = \"SelectionSet\"; const FIELD = \"Field\"; const ARGUMENT = \"Argument\"; const FRAGMENT_SPREAD = \"FragmentSpread\"; const INLINE_FRAGMENT = \"InlineFragment\"; const FRAGMENT_DEFINITION = \"FragmentDefinition\"; const INT = \"IntValue\"; const FLOAT = \"FloatValue\"; const STRING = \"StringValue\"; const BOOLEAN = \"BooleanValue\"; const ENUM = \"EnumValue\"; const NULL = \"NullValue\"; const LST = \"ListValue\"; const OBJECT = \"ObjectValue\"; const OBJECT_FIELD = \"ObjectField\"; const DIRECTIVE = \"Directive\"; const NAMED_TYPE = \"NamedType\"; const LIST_TYPE = \"ListType\"; const NON_NULL_TYPE = \"NonNullType\"; const SCHEMA_DEFINITION = \"SchemaDefinition\"; const OPERATION_TYPE_DEFINITION = \"OperationTypeDefinition\"; const SCALAR_TYPE_DEFINITION = \"ScalarTypeDefinition\"; const OBJECT_TYPE_DEFINITION = \"ObjectTypeDefinition\"; const FIELD_DEFINITION = \"FieldDefinition\"; const INPUT_VALUE_DEFINITION = \"InputValueDefinition\"; const INTERFACE_TYPE_DEFINITION = \"InterfaceTypeDefinition\"; const UNION_TYPE_DEFINITION = \"UnionTypeDefinition\"; const ENUM_TYPE_DEFINITION = \"EnumTypeDefinition\"; const ENUM_VALUE_DEFINITION = \"EnumValueDefinition\"; const INPUT_OBJECT_TYPE_DEFINITION = \"InputObjectTypeDefinition\"; const SCALAR_TYPE_EXTENSION = \"ScalarTypeExtension\"; const OBJECT_TYPE_EXTENSION = \"ObjectTypeExtension\"; const INTERFACE_TYPE_EXTENSION = \"InterfaceTypeExtension\"; const UNION_TYPE_EXTENSION = \"UnionTypeExtension\"; const ENUM_TYPE_EXTENSION = \"EnumTypeExtension\"; const INPUT_OBJECT_TYPE_EXTENSION = \"InputObjectTypeExtension\"; const DIRECTIVE_DEFINITION = \"DirectiveDefinition\";","title":"GraphQL\\Language\\AST\\NodeKind"},{"location":"reference/#graphqlexecutorexecutor","text":"Implements the \"Evaluating requests\" section of the GraphQL specification. Class Methods: /** * Executes DocumentNode against given $schema. * * Always returns ExecutionResult and never throws. All errors which occur during operation * execution are collected in `$result->errors`. * * @api * @param Schema $schema * @param DocumentNode $ast * @param $rootValue * @param $contextValue * @param array|\\ArrayAccess $variableValues * @param null $operationName * @param callable $fieldResolver * * @return ExecutionResult|Promise */ static function execute( GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, callable $fieldResolver = null ) /** * Same as execute(), but requires promise adapter and returns a promise which is always * fulfilled with an instance of ExecutionResult and never rejected. * * Useful for async PHP platforms. * * @api * @param PromiseAdapter $promiseAdapter * @param Schema $schema * @param DocumentNode $ast * @param null $rootValue * @param null $contextValue * @param null $variableValues * @param null $operationName * @param callable|null $fieldResolver * @return Promise */ static function promiseToExecute( GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter, GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, $rootValue = null, $contextValue = null, $variableValues = null, $operationName = null, callable $fieldResolver = null )","title":"GraphQL\\Executor\\Executor"},{"location":"reference/#graphqlexecutorexecutionresult","text":"Returned after query execution . Represents both - result of successful execution and of a failed one (with errors collected in errors prop) Could be converted to spec-compliant serializable array using toArray() Class Props: /** * Data collected from resolvers during query execution * * @api * @var array */ public $data; /** * Errors registered during query execution. * * If an error was caused by exception thrown in resolver, $error->getPrevious() would * contain original exception. * * @api * @var \\GraphQL\\Error\\Error[] */ public $errors; /** * User-defined serializable array of extensions included in serialized result. * Conforms to * * @api * @var array */ public $extensions; Class Methods: /** * Define custom error formatting (must conform to http://facebook.github.io/graphql/#sec-Errors) * * Expected signature is: function (GraphQL\\Error\\Error $error): array * * Default formatter is \"GraphQL\\Error\\FormattedError::createFromException\" * * Expected returned value must be an array: * array( * 'message' => 'errorMessage', * // ... other keys * ); * * @api * @param callable $errorFormatter * @return $this */ function setErrorFormatter(callable $errorFormatter) /** * Define custom logic for error handling (filtering, logging, etc). * * Expected handler signature is: function (array $errors, callable $formatter): array * * Default handler is: * function (array $errors, callable $formatter) { * return array_map($formatter, $errors); * } * * @api * @param callable $handler * @return $this */ function setErrorsHandler(callable $handler) /** * Converts GraphQL query result to spec-compliant serializable array using provided * errors handler and formatter. * * If debug argument is passed, output of error formatter is enriched which debugging information * (\"debugMessage\", \"trace\" keys depending on flags). * * $debug argument must be either bool (only adds \"debugMessage\" to result) or sum of flags from * GraphQL\\Error\\Debug * * @api * @param bool|int $debug * @return array */ function toArray($debug = false)","title":"GraphQL\\Executor\\ExecutionResult"},{"location":"reference/#graphqlexecutorpromisepromiseadapter","text":"Provides a means for integration of async PHP platforms ( related docs ) Interface Methods: /** * Return true if the value is a promise or a deferred of the underlying platform * * @api * @param mixed $value * @return bool */ function isThenable($value) /** * Converts thenable of the underlying platform into GraphQL\\Executor\\Promise\\Promise instance * * @api * @param object $thenable * @return Promise */ function convertThenable($thenable) /** * Accepts our Promise wrapper, extracts adopted promise out of it and executes actual `then` logic described * in Promises/A+ specs. Then returns new wrapped instance of GraphQL\\Executor\\Promise\\Promise. * * @api * @param Promise $promise * @param callable|null $onFulfilled * @param callable|null $onRejected * * @return Promise */ function then( GraphQL\\Executor\\Promise\\Promise $promise, callable $onFulfilled = null, callable $onRejected = null ) /** * Creates a Promise * * Expected resolver signature: * function(callable $resolve, callable $reject) * * @api * @param callable $resolver * @return Promise */ function create(callable $resolver) /** * Creates a fulfilled Promise for a value if the value is not a promise. * * @api * @param mixed $value * @return Promise */ function createFulfilled($value = null) /** * Creates a rejected promise for a reason if the reason is not a promise. If * the provided reason is a promise, then it is returned as-is. * * @api * @param \\Throwable $reason * @return Promise */ function createRejected($reason) /** * Given an array of promises (or values), returns a promise that is fulfilled when all the * items in the array are fulfilled. * * @api * @param array $promisesOrValues Promises or values. * @return Promise */ function all(array $promisesOrValues)","title":"GraphQL\\Executor\\Promise\\PromiseAdapter"},{"location":"reference/#graphqlvalidatordocumentvalidator","text":"Implements the \"Validation\" section of the spec. Validation runs synchronously, returning an array of encountered errors, or an empty array if no errors were encountered and the document is valid. A list of specific validation rules may be provided. If not provided, the default list of rules defined by the GraphQL specification will be used. Each validation rule is an instance of GraphQL\\Validator\\Rules\\AbstractValidationRule which returns a visitor (see the GraphQL\\Language\\Visitor API ). Visitor methods are expected to return an instance of GraphQL\\Error\\Error , or array of such instances when invalid. Optionally a custom TypeInfo instance may be provided. If not provided, one will be created from the provided schema. Class Methods: /** * Primary method for query validation. See class description for details. * * @api * @param Schema $schema * @param DocumentNode $ast * @param AbstractValidationRule[]|null $rules * @param TypeInfo|null $typeInfo * @return Error[] */ static function validate( GraphQL\\Type\\Schema $schema, GraphQL\\Language\\AST\\DocumentNode $ast, array $rules = null, GraphQL\\Utils\\TypeInfo $typeInfo = null ) /** * Returns all global validation rules. * * @api * @return AbstractValidationRule[] */ static function allRules() /** * Returns global validation rule by name. Standard rules are named by class name, so * example usage for such rules: * * $rule = DocumentValidator::getRule(GraphQL\\Validator\\Rules\\QueryComplexity::class); * * @api * @param string $name * @return AbstractValidationRule */ static function getRule($name) /** * Add rule to list of global validation rules * * @api * @param AbstractValidationRule $rule */ static function addRule(GraphQL\\Validator\\Rules\\AbstractValidationRule $rule)","title":"GraphQL\\Validator\\DocumentValidator"},{"location":"reference/#graphqlerrorerror","text":"Describes an Error found during the parse, validate, or execute phases of performing a GraphQL operation. In addition to a message and stack trace, it also includes information about the locations in a GraphQL document and/or execution result that correspond to the Error. When the error was caused by an exception thrown in resolver, original exception is available via getPrevious() . Also read related docs on error handling Class extends standard PHP \\Exception , so all standard methods of base \\Exception class are available in addition to those listed below. Class Constants: const CATEGORY_GRAPHQL = \"graphql\"; const CATEGORY_INTERNAL = \"internal\"; Class Methods: /** * An array of locations within the source GraphQL document which correspond to this error. * * Each entry has information about `line` and `column` within source GraphQL document: * $location->line; * $location->column; * * Errors during validation often contain multiple locations, for example to * point out to field mentioned in multiple fragments. Errors during execution include a * single location, the field which produced the error. * * @api * @return SourceLocation[] */ function getLocations() /** * Returns an array describing the path from the root value to the field which produced this error. * Only included for execution errors. * * @api * @return array|null */ function getPath()","title":"GraphQL\\Error\\Error"},{"location":"reference/#graphqlerrorwarning","text":"Encapsulates warnings produced by the library. Warnings can be suppressed (individually or all) if required. Also it is possible to override warning handler (which is trigger_error() by default) Class Constants: const WARNING_ASSIGN = 2; const WARNING_CONFIG = 4; const WARNING_FULL_SCHEMA_SCAN = 8; const WARNING_CONFIG_DEPRECATION = 16; const WARNING_NOT_A_TYPE = 32; const ALL = 63; Class Methods: /** * Sets warning handler which can intercept all system warnings. * When not set, trigger_error() is used to notify about warnings. * * @api * @param callable|null $warningHandler */ static function setWarningHandler(callable $warningHandler = null) /** * Suppress warning by id (has no effect when custom warning handler is set) * * Usage example: * Warning::suppress(Warning::WARNING_NOT_A_TYPE) * * When passing true - suppresses all warnings. * * @api * @param bool|int $suppress */ static function suppress($suppress = true) /** * Re-enable previously suppressed warning by id * * Usage example: * Warning::suppress(Warning::WARNING_NOT_A_TYPE) * * When passing true - re-enables all warnings. * * @api * @param bool|int $enable */ static function enable($enable = true)","title":"GraphQL\\Error\\Warning"},{"location":"reference/#graphqlerrorclientaware","text":"This interface is used for default error formatting . Only errors implementing this interface (and returning true from isClientSafe() ) will be formatted with original error message. All other errors will be formatted with generic \"Internal server error\". Interface Methods: /** * Returns true when exception message is safe to be displayed to a client. * * @api * @return bool */ function isClientSafe() /** * Returns string describing a category of the error. * * Value \"graphql\" is reserved for errors produced by query parsing or validation, do not use it. * * @api * @return string */ function getCategory()","title":"GraphQL\\Error\\ClientAware"},{"location":"reference/#graphqlerrordebug","text":"Collection of flags for error debugging . Class Constants: const INCLUDE_DEBUG_MESSAGE = 1; const INCLUDE_TRACE = 2; const RETHROW_INTERNAL_EXCEPTIONS = 4;","title":"GraphQL\\Error\\Debug"},{"location":"reference/#graphqlerrorformattederror","text":"This class is used for default error formatting . It converts PHP exceptions to spec-compliant errors and provides tools for error debugging. Class Methods: /** * Set default error message for internal errors formatted using createFormattedError(). * This value can be overridden by passing 3rd argument to `createFormattedError()`. * * @api * @param string $msg */ static function setInternalErrorMessage($msg) /** * Standard GraphQL error formatter. Converts any exception to array * conforming to GraphQL spec. * * This method only exposes exception message when exception implements ClientAware interface * (or when debug flags are passed). * * For a list of available debug flags see GraphQL\\Error\\Debug constants. * * @api * @param \\Throwable $e * @param bool|int $debug * @param string $internalErrorMessage * @return array * @throws \\Throwable */ static function createFromException($e, $debug = false, $internalErrorMessage = null) /** * Returns error trace as serializable array * * @api * @param \\Throwable $error * @return array */ static function toSafeTrace($error)","title":"GraphQL\\Error\\FormattedError"},{"location":"reference/#graphqlserverstandardserver","text":"GraphQL server compatible with both: express-graphql and Apollo Server . Usage Example: $server = new StandardServer([ 'schema' => $mySchema ]); $server->handleRequest(); Or using ServerConfig instance: $config = GraphQL\\Server\\ServerConfig::create() ->setSchema($mySchema) ->setContext($myContext); $server = new GraphQL\\Server\\StandardServer($config); $server->handleRequest(); See dedicated section in docs for details. Class Methods: /** * Converts and exception to error and sends spec-compliant HTTP 500 error. * Useful when an exception is thrown somewhere outside of server execution context * (e.g. during schema instantiation). * * @api * @param \\Throwable $error * @param bool $debug * @param bool $exitWhenDone */ static function send500Error($error, $debug = false, $exitWhenDone = false) /** * Creates new instance of a standard GraphQL HTTP server * * @api * @param ServerConfig|array $config */ function __construct($config) /** * Parses HTTP request, executes and emits response (using standard PHP `header` function and `echo`) * * By default (when $parsedBody is not set) it uses PHP globals to parse a request. * It is possible to implement request parsing elsewhere (e.g. using framework Request instance) * and then pass it to the server. * * See `executeRequest()` if you prefer to emit response yourself * (e.g. using Response object of some framework) * * @api * @param OperationParams|OperationParams[] $parsedBody * @param bool $exitWhenDone */ function handleRequest($parsedBody = null, $exitWhenDone = false) /** * Executes GraphQL operation and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter). * * By default (when $parsedBody is not set) it uses PHP globals to parse a request. * It is possible to implement request parsing elsewhere (e.g. using framework Request instance) * and then pass it to the server. * * PSR-7 compatible method executePsrRequest() does exactly this. * * @api * @param OperationParams|OperationParams[] $parsedBody * @return ExecutionResult|ExecutionResult[]|Promise * @throws InvariantViolation */ function executeRequest($parsedBody = null) /** * Executes PSR-7 request and fulfills PSR-7 response. * * See `executePsrRequest()` if you prefer to create response yourself * (e.g. using specific JsonResponse instance of some framework). * * @api * @param ServerRequestInterface $request * @param ResponseInterface $response * @param StreamInterface $writableBodyStream * @return ResponseInterface|Promise */ function processPsrRequest( Psr\\Http\\Message\\ServerRequestInterface $request, Psr\\Http\\Message\\ResponseInterface $response, Psr\\Http\\Message\\StreamInterface $writableBodyStream ) /** * Executes GraphQL operation and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter) * * @api * @param ServerRequestInterface $request * @return ExecutionResult|ExecutionResult[]|Promise */ function executePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request) /** * Returns an instance of Server helper, which contains most of the actual logic for * parsing / validating / executing request (which could be re-used by other server implementations) * * @api * @return Helper */ function getHelper()","title":"GraphQL\\Server\\StandardServer"},{"location":"reference/#graphqlserverserverconfig","text":"Server configuration class. Could be passed directly to server constructor. List of options accepted by create method is described in docs . Usage example: $config = GraphQL\\Server\\ServerConfig::create() ->setSchema($mySchema) ->setContext($myContext); $server = new GraphQL\\Server\\StandardServer($config); Class Methods: /** * Converts an array of options to instance of ServerConfig * (or just returns empty config when array is not passed). * * @api * @param array $config * @return ServerConfig */ static function create(array $config = []) /** * @api * @param Schema $schema * @return $this */ function setSchema(GraphQL\\Type\\Schema $schema) /** * @api * @param mixed|\\Closure $context * @return $this */ function setContext($context) /** * @api * @param mixed|\\Closure $rootValue * @return $this */ function setRootValue($rootValue) /** * Expects function(Throwable $e) : array * * @api * @param callable $errorFormatter * @return $this */ function setErrorFormatter(callable $errorFormatter) /** * Expects function(array $errors, callable $formatter) : array * * @api * @param callable $handler * @return $this */ function setErrorsHandler(callable $handler) /** * Set validation rules for this server. * * @api * @param array|callable * @return $this */ function setValidationRules($validationRules) /** * @api * @param callable $fieldResolver * @return $this */ function setFieldResolver(callable $fieldResolver) /** * Expects function($queryId, OperationParams $params) : string|DocumentNode * * This function must return query string or valid DocumentNode. * * @api * @param callable $persistentQueryLoader * @return $this */ function setPersistentQueryLoader(callable $persistentQueryLoader) /** * Set response debug flags. See GraphQL\\Error\\Debug class for a list of all available flags * * @api * @param bool|int $set * @return $this */ function setDebug($set = true) /** * Allow batching queries (disabled by default) * * @api * @param bool $enableBatching * @return $this */ function setQueryBatching($enableBatching) /** * @api * @param PromiseAdapter $promiseAdapter * @return $this */ function setPromiseAdapter(GraphQL\\Executor\\Promise\\PromiseAdapter $promiseAdapter)","title":"GraphQL\\Server\\ServerConfig"},{"location":"reference/#graphqlserverhelper","text":"Contains functionality that could be re-used by various server implementations Class Methods: /** * Parses HTTP request using PHP globals and returns GraphQL OperationParams * contained in this request. For batched requests it returns an array of OperationParams. * * This function does not check validity of these params * (validation is performed separately in validateOperationParams() method). * * If $readRawBodyFn argument is not provided - will attempt to read raw request body * from `php://input` stream. * * Internally it normalizes input to $method, $bodyParams and $queryParams and * calls `parseRequestParams()` to produce actual return value. * * For PSR-7 request parsing use `parsePsrRequest()` instead. * * @api * @param callable|null $readRawBodyFn * @return OperationParams|OperationParams[] * @throws RequestError */ function parseHttpRequest(callable $readRawBodyFn = null) /** * Parses normalized request params and returns instance of OperationParams * or array of OperationParams in case of batch operation. * * Returned value is a suitable input for `executeOperation` or `executeBatch` (if array) * * @api * @param string $method * @param array $bodyParams * @param array $queryParams * @return OperationParams|OperationParams[] * @throws RequestError */ function parseRequestParams($method, array $bodyParams, array $queryParams) /** * Checks validity of OperationParams extracted from HTTP request and returns an array of errors * if params are invalid (or empty array when params are valid) * * @api * @param OperationParams $params * @return Error[] */ function validateOperationParams(GraphQL\\Server\\OperationParams $params) /** * Executes GraphQL operation with given server configuration and returns execution result * (or promise when promise adapter is different from SyncPromiseAdapter) * * @api * @param ServerConfig $config * @param OperationParams $op * * @return ExecutionResult|Promise */ function executeOperation(GraphQL\\Server\\ServerConfig $config, GraphQL\\Server\\OperationParams $op) /** * Executes batched GraphQL operations with shared promise queue * (thus, effectively batching deferreds|promises of all queries at once) * * @api * @param ServerConfig $config * @param OperationParams[] $operations * @return ExecutionResult[]|Promise */ function executeBatch(GraphQL\\Server\\ServerConfig $config, array $operations) /** * Send response using standard PHP `header()` and `echo`. * * @api * @param Promise|ExecutionResult|ExecutionResult[] $result * @param bool $exitWhenDone */ function sendResponse($result, $exitWhenDone = false) /** * Converts PSR-7 request to OperationParams[] * * @api * @param ServerRequestInterface $request * @return array|Helper * @throws RequestError */ function parsePsrRequest(Psr\\Http\\Message\\ServerRequestInterface $request) /** * Converts query execution result to PSR-7 response * * @api * @param Promise|ExecutionResult|ExecutionResult[] $result * @param ResponseInterface $response * @param StreamInterface $writableBodyStream * @return Promise|ResponseInterface */ function toPsrResponse( $result, Psr\\Http\\Message\\ResponseInterface $response, Psr\\Http\\Message\\StreamInterface $writableBodyStream )","title":"GraphQL\\Server\\Helper"},{"location":"reference/#graphqlserveroperationparams","text":"Structure representing parsed HTTP parameters for GraphQL operation Class Props: /** * Id of the query (when using persistent queries). * * Valid aliases (case-insensitive): * - id * - queryId * - documentId * * @api * @var string */ public $queryId; /** * @api * @var string */ public $query; /** * @api * @var string */ public $operation; /** * @api * @var array */ public $variables; Class Methods: /** * Creates an instance from given array * * @api * @param array $params * @param bool $readonly * @return OperationParams */ static function create(array $params, $readonly = false) /** * @api * @param string $key * @return mixed */ function getOriginalInput($key) /** * Indicates that operation is executed in read-only context * (e.g. via HTTP GET request) * * @api * @return bool */ function isReadOnly()","title":"GraphQL\\Server\\OperationParams"},{"location":"reference/#graphqlutilsbuildschema","text":"Build instance of GraphQL\\Type\\Schema out of type language definition (string or parsed AST) See section in docs for details. Class Methods: /** * This takes the ast of a schema document produced by the parse function in * GraphQL\\Language\\Parser. * * If no schema definition is provided, then it will look for types named Query * and Mutation. * * Given that AST it constructs a GraphQL\\Type\\Schema. The resulting schema * has no resolve methods, so execution will use default resolvers. * * Accepts options as a second argument: * * - commentDescriptions: * Provide true to use preceding comments as the description. * * * @api * @param DocumentNode $ast * @param array $options * @return Schema * @throws Error */ static function buildAST(GraphQL\\Language\\AST\\DocumentNode $ast, array $options = []) /** * A helper function to build a GraphQLSchema directly from a source * document. * * @api * @param DocumentNode|Source|string $source * @param array $options * @return Schema */ static function build($source, array $options = [])","title":"GraphQL\\Utils\\BuildSchema"},{"location":"reference/#graphqlutilsast","text":"Various utilities dealing with AST Class Methods: /** * Convert representation of AST as an associative array to instance of GraphQL\\Language\\AST\\Node. * * For example: * * ```php * AST::fromArray([ * 'kind' => 'ListValue', * 'values' => [ * ['kind' => 'StringValue', 'value' => 'my str'], * ['kind' => 'StringValue', 'value' => 'my other str'] * ], * 'loc' => ['start' => 21, 'end' => 25] * ]); * ``` * * Will produce instance of `ListValueNode` where `values` prop is a lazily-evaluated `NodeList` * returning instances of `StringValueNode` on access. * * This is a reverse operation for AST::toArray($node) * * @api * @param array $node * @return Node */ static function fromArray(array $node) /** * Convert AST node to serializable array * * @api * @param Node $node * @return array */ static function toArray(GraphQL\\Language\\AST\\Node $node) /** * Produces a GraphQL Value AST given a PHP value. * * Optionally, a GraphQL type may be provided, which will be used to * disambiguate between value primitives. * * | PHP Value | GraphQL Value | * | ------------- | -------------------- | * | Object | Input Object | * | Assoc Array | Input Object | * | Array | List | * | Boolean | Boolean | * | String | String / Enum Value | * | Int | Int | * | Float | Int / Float | * | Mixed | Enum Value | * | null | NullValue | * * @api * @param $value * @param InputType $type * @return ObjectValueNode|ListValueNode|BooleanValueNode|IntValueNode|FloatValueNode|EnumValueNode|StringValueNode|NullValueNode */ static function astFromValue($value, GraphQL\\Type\\Definition\\InputType $type) /** * Produces a PHP value given a GraphQL Value AST. * * A GraphQL type must be provided, which will be used to interpret different * GraphQL Value literals. * * Returns `null` when the value could not be validly coerced according to * the provided type. * * | GraphQL Value | PHP Value | * | -------------------- | ------------- | * | Input Object | Assoc Array | * | List | Array | * | Boolean | Boolean | * | String | String | * | Int / Float | Int / Float | * | Enum Value | Mixed | * | Null Value | null | * * @api * @param $valueNode * @param InputType $type * @param null $variables * @return array|null|\\stdClass * @throws \\Exception */ static function valueFromAST($valueNode, GraphQL\\Type\\Definition\\InputType $type, $variables = null) /** * Produces a PHP value given a GraphQL Value AST. * * Unlike `valueFromAST()`, no type is provided. The resulting JavaScript value * will reflect the provided GraphQL value AST. * * | GraphQL Value | PHP Value | * | -------------------- | ------------- | * | Input Object | Assoc Array | * | List | Array | * | Boolean | Boolean | * | String | String | * | Int / Float | Int / Float | * | Enum | Mixed | * | Null | null | * * @api * @param Node $valueNode * @param array|null $variables * @return mixed * @throws \\Exception */ static function valueFromASTUntyped($valueNode, array $variables = null) /** * Returns type definition for given AST Type node * * @api * @param Schema $schema * @param NamedTypeNode|ListTypeNode|NonNullTypeNode $inputTypeNode * @return Type * @throws \\Exception */ static function typeFromAST(GraphQL\\Type\\Schema $schema, $inputTypeNode) /** * Returns operation type (\"query\", \"mutation\" or \"subscription\") given a document and operation name * * @api * @param DocumentNode $document * @param string $operationName * @return bool */ static function getOperation(GraphQL\\Language\\AST\\DocumentNode $document, $operationName = null)","title":"GraphQL\\Utils\\AST"},{"location":"reference/#graphqlutilsschemaprinter","text":"Given an instance of Schema, prints it in GraphQL type language. Class Methods: /** * Accepts options as a second argument: * * - commentDescriptions: * Provide true to use preceding comments as the description. * @api * @param Schema $schema * @return string */ static function doPrint(GraphQL\\Type\\Schema $schema, array $options = []) /** * @api * @param Schema $schema * @return string */ static function printIntrosepctionSchema(GraphQL\\Type\\Schema $schema, array $options = [])","title":"GraphQL\\Utils\\SchemaPrinter"},{"location":"security/","text":"Query Complexity Analysis This is a PHP port of Query Complexity Analysis in Sangria implementation. Complexity analysis is a separate validation rule which calculates query complexity score before execution. Every field in the query gets a default score 1 (including ObjectType nodes). Total complexity of the query is the sum of all field scores. For example, the complexity of introspection query is 109 . If this score exceeds a threshold, a query is not executed and an error is returned instead. Complexity analysis is disabled by default. To enabled it, add validation rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\QueryComplexity; use GraphQL\\Validator\\DocumentValidator; $rule = new QueryComplexity($maxQueryComplexity = 100); DocumentValidator::addRule($rule); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution . To customize field score add complexity function to field definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $type = new ObjectType([ 'name' => 'MyType', 'fields' => [ 'someList' => [ 'type' => Type::listOf(Type::string()), 'args' => [ 'limit' => [ 'type' => Type::int(), 'defaultValue' => 10 ] ], 'complexity' => function($childrenComplexity, $args) { return $childrenComplexity * $args['limit']; } ] ] ]); Limiting Query Depth This is a PHP port of Limiting Query Depth in Sangria implementation. For example, max depth of the introspection query is 7 . It is disabled by default. To enable it, add following validation rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\QueryDepth; use GraphQL\\Validator\\DocumentValidator; $rule = new QueryDepth($maxDepth = 10); DocumentValidator::addRule($rule); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution . Disabling Introspection Introspection is a mechanism for fetching schema structure. It is used by tools like GraphiQL for auto-completion, query validation, etc. Introspection is enabled by default. It means that anybody can get a full description of your schema by sending a special query containing meta fields __type and __schema . If you are not planning to expose your API to the general public, it makes sense to disable this feature. GraphQL PHP provides you separate validation rule which prohibits queries that contain __type or __schema fields. To disable introspection, add following rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\DisableIntrospection; use GraphQL\\Validator\\DocumentValidator; DocumentValidator::addRule(new DisableIntrospection()); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution .","title":"Security"},{"location":"security/#query-complexity-analysis","text":"This is a PHP port of Query Complexity Analysis in Sangria implementation. Complexity analysis is a separate validation rule which calculates query complexity score before execution. Every field in the query gets a default score 1 (including ObjectType nodes). Total complexity of the query is the sum of all field scores. For example, the complexity of introspection query is 109 . If this score exceeds a threshold, a query is not executed and an error is returned instead. Complexity analysis is disabled by default. To enabled it, add validation rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\QueryComplexity; use GraphQL\\Validator\\DocumentValidator; $rule = new QueryComplexity($maxQueryComplexity = 100); DocumentValidator::addRule($rule); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution . To customize field score add complexity function to field definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $type = new ObjectType([ 'name' => 'MyType', 'fields' => [ 'someList' => [ 'type' => Type::listOf(Type::string()), 'args' => [ 'limit' => [ 'type' => Type::int(), 'defaultValue' => 10 ] ], 'complexity' => function($childrenComplexity, $args) { return $childrenComplexity * $args['limit']; } ] ] ]);","title":"Query Complexity Analysis"},{"location":"security/#limiting-query-depth","text":"This is a PHP port of Limiting Query Depth in Sangria implementation. For example, max depth of the introspection query is 7 . It is disabled by default. To enable it, add following validation rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\QueryDepth; use GraphQL\\Validator\\DocumentValidator; $rule = new QueryDepth($maxDepth = 10); DocumentValidator::addRule($rule); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution .","title":"Limiting Query Depth"},{"location":"security/#disabling-introspection","text":"Introspection is a mechanism for fetching schema structure. It is used by tools like GraphiQL for auto-completion, query validation, etc. Introspection is enabled by default. It means that anybody can get a full description of your schema by sending a special query containing meta fields __type and __schema . If you are not planning to expose your API to the general public, it makes sense to disable this feature. GraphQL PHP provides you separate validation rule which prohibits queries that contain __type or __schema fields. To disable introspection, add following rule: <?php use GraphQL\\GraphQL; use GraphQL\\Validator\\Rules\\DisableIntrospection; use GraphQL\\Validator\\DocumentValidator; DocumentValidator::addRule(new DisableIntrospection()); GraphQL::executeQuery(/*...*/); This will set the rule globally. Alternatively, you can provide validation rules per execution .","title":"Disabling Introspection"},{"location":"type-system/","text":"Type System To start using GraphQL you are expected to implement a type hierarchy and expose it as Schema . In graphql-php type is an instance of internal class from GraphQL\\Type\\Definition namespace: ObjectType , InterfaceType , UnionType , InputObjectType , ScalarType , EnumType (or one of subclasses). But most of the types in your schema will be object types . Type Definition Styles Several styles of type definitions are supported depending on your preferences. Inline definitions: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $myType = new ObjectType([ 'name' => 'MyType', 'fields' => [ 'id' => Type::id() ] ]); Class per type: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; class MyType extends ObjectType { public function __construct() { $config = [ // Note: 'name' is not needed in this form: // it will be inferred from class name by omitting namespace and dropping \"Type\" suffix 'fields' => [ 'id' => Type::id() ] ]; parent::__construct($config); } } Using GraphQL Type language : schema { query: Query mutation: Mutation } type Query { greetings(input: HelloInput!): String! } input HelloInput { firstName: String! lastName: String } Read more about type language definitions in a dedicated docs section . Type Registry Every type must be presented in Schema by a single instance ( graphql-php throws when it discovers several instances with the same name in the schema). Therefore if you define your type as separate PHP class you must ensure that only one instance of that class is added to the schema. The typical way to do this is to create a registry of your types: <?php namespace MyApp; class TypeRegistry { private $myAType; private $myBType; public function myAType() { return $this->myAType ?: ($this->myAType = new MyAType($this)); } public function myBType() { return $this->myBType ?: ($this->myBType = new MyBType($this)); } } And use this registry in type definition: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; class MyAType extends ObjectType { public function __construct(TypeRegistry $types) { parent::__construct([ 'fields' => [ 'b' => $types->myBType() ] ]); } } Obviously, you can automate this registry as you wish to reduce boilerplate or even introduce Dependency Injection Container if your types have other dependencies. Alternatively, all methods of the registry could be static - then there is no need to pass it in constructor - instead just use use TypeRegistry::myAType() in your type definitions.","title":"Introduction"},{"location":"type-system/#type-system","text":"To start using GraphQL you are expected to implement a type hierarchy and expose it as Schema . In graphql-php type is an instance of internal class from GraphQL\\Type\\Definition namespace: ObjectType , InterfaceType , UnionType , InputObjectType , ScalarType , EnumType (or one of subclasses). But most of the types in your schema will be object types .","title":"Type System"},{"location":"type-system/#type-definition-styles","text":"Several styles of type definitions are supported depending on your preferences. Inline definitions: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $myType = new ObjectType([ 'name' => 'MyType', 'fields' => [ 'id' => Type::id() ] ]); Class per type: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; class MyType extends ObjectType { public function __construct() { $config = [ // Note: 'name' is not needed in this form: // it will be inferred from class name by omitting namespace and dropping \"Type\" suffix 'fields' => [ 'id' => Type::id() ] ]; parent::__construct($config); } } Using GraphQL Type language : schema { query: Query mutation: Mutation } type Query { greetings(input: HelloInput!): String! } input HelloInput { firstName: String! lastName: String } Read more about type language definitions in a dedicated docs section .","title":"Type Definition Styles"},{"location":"type-system/#type-registry","text":"Every type must be presented in Schema by a single instance ( graphql-php throws when it discovers several instances with the same name in the schema). Therefore if you define your type as separate PHP class you must ensure that only one instance of that class is added to the schema. The typical way to do this is to create a registry of your types: <?php namespace MyApp; class TypeRegistry { private $myAType; private $myBType; public function myAType() { return $this->myAType ?: ($this->myAType = new MyAType($this)); } public function myBType() { return $this->myBType ?: ($this->myBType = new MyBType($this)); } } And use this registry in type definition: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; class MyAType extends ObjectType { public function __construct(TypeRegistry $types) { parent::__construct([ 'fields' => [ 'b' => $types->myBType() ] ]); } } Obviously, you can automate this registry as you wish to reduce boilerplate or even introduce Dependency Injection Container if your types have other dependencies. Alternatively, all methods of the registry could be static - then there is no need to pass it in constructor - instead just use use TypeRegistry::myAType() in your type definitions.","title":"Type Registry"},{"location":"type-system/directives/","text":"Built-in directives The directive is a way for a client to give GraphQL server additional context and hints on how to execute the query. The directive can be attached to a field or fragment and can affect the execution of the query in any way the server desires. GraphQL specification includes two built-in directives: @include(if: Boolean) Only include this field or fragment in the result if the argument is true @skip(if: Boolean) Skip this field or fragment if the argument is true For example: query Hero($episode: Episode, $withFriends: Boolean!) { hero(episode: $episode) { name friends @include(if: $withFriends) { name } } } Here if $withFriends variable is set to false - friends section will be ignored and excluded from the response. Important implementation detail: those fields will never be executed (not just removed from response after execution). Custom directives graphql-php supports custom directives even though their presence does not affect the execution of fields. But you can use GraphQL\\Type\\Definition\\ResolveInfo in field resolvers to modify the output depending on those directives or perform statistics collection. Other use case is your own query validation rules relying on custom directives. In graphql-php custom directive is an instance of GraphQL\\Type\\Definition\\Directive (or one of its subclasses) which accepts an array of following options: <?php use GraphQL\\Language\\DirectiveLocation; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\Directive; use GraphQL\\Type\\Definition\\FieldArgument; $trackDirective = new Directive([ 'name' => 'track', 'description' => 'Instruction to record usage of the field by client', 'locations' => [ DirectiveLocation::FIELD, ], 'args' => [ new FieldArgument([ 'name' => 'details', 'type' => Type::string(), 'description' => 'String with additional details of field usage scenario', 'defaultValue' => '' ]) ] ]); See possible directive locations in GraphQL\\Language\\DirectiveLocation .","title":"Directives"},{"location":"type-system/directives/#built-in-directives","text":"The directive is a way for a client to give GraphQL server additional context and hints on how to execute the query. The directive can be attached to a field or fragment and can affect the execution of the query in any way the server desires. GraphQL specification includes two built-in directives: @include(if: Boolean) Only include this field or fragment in the result if the argument is true @skip(if: Boolean) Skip this field or fragment if the argument is true For example: query Hero($episode: Episode, $withFriends: Boolean!) { hero(episode: $episode) { name friends @include(if: $withFriends) { name } } } Here if $withFriends variable is set to false - friends section will be ignored and excluded from the response. Important implementation detail: those fields will never be executed (not just removed from response after execution).","title":"Built-in directives"},{"location":"type-system/directives/#custom-directives","text":"graphql-php supports custom directives even though their presence does not affect the execution of fields. But you can use GraphQL\\Type\\Definition\\ResolveInfo in field resolvers to modify the output depending on those directives or perform statistics collection. Other use case is your own query validation rules relying on custom directives. In graphql-php custom directive is an instance of GraphQL\\Type\\Definition\\Directive (or one of its subclasses) which accepts an array of following options: <?php use GraphQL\\Language\\DirectiveLocation; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\Directive; use GraphQL\\Type\\Definition\\FieldArgument; $trackDirective = new Directive([ 'name' => 'track', 'description' => 'Instruction to record usage of the field by client', 'locations' => [ DirectiveLocation::FIELD, ], 'args' => [ new FieldArgument([ 'name' => 'details', 'type' => Type::string(), 'description' => 'String with additional details of field usage scenario', 'defaultValue' => '' ]) ] ]); See possible directive locations in GraphQL\\Language\\DirectiveLocation .","title":"Custom directives"},{"location":"type-system/enum-types/","text":"Enum Type Definition Enumeration types are a special kind of scalar that is restricted to a particular set of allowed values. In graphql-php enum type is an instance of GraphQL\\Type\\Definition\\EnumType which accepts configuration array in constructor: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => [ 'value' => 4, 'description' => 'Released in 1977.' ], 'EMPIRE' => [ 'value' => 5, 'description' => 'Released in 1980.' ], 'JEDI' => [ 'value' => 6, 'description' => 'Released in 1983.' ], ] ]); This example uses an inline style for Enum Type definition, but you can also use inheritance or type language . Configuration options Enum Type constructor accepts an array with following options: Option Type Notes name string Required. Name of the type. When not set - inferred from array key (read about shorthand field definition below) description string Plain-text description of the type for clients (e.g. used by GraphiQL for auto-generated documentation) values array List of enumerated items, see below for expected structure of each entry Each entry of values array in turn accepts following options: Option Type Notes name string Required. Name of the item. When not set - inferred from array key (read about shorthand field definition below) value mixed Internal representation of enum item in your application (could be any value, including complex objects or callbacks) description string Plain-text description of enum value for clients (e.g. used by GraphiQL for auto-generated documentation) deprecationReason string Text describing why this enum value is deprecated. When not empty - item will not be returned by introspection queries (unless forced) Shorthand definitions If internal representation of enumerated item is the same as item name, then you can use following shorthand for definition: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => ['NEWHOPE', 'EMPIRE', 'JEDI'] ]); which is equivalent of: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => ['value' => 'NEWHOPE'], 'EMPIRE' => ['value' => 'EMPIRE'], 'JEDI' => ['value' => 'JEDI'] ] ]); which is in turn equivalent of the full form: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ ['name' => 'NEWHOPE', 'value' => 'NEWHOPE'], ['name' => 'EMPIRE', 'value' => 'EMPIRE'], ['name' => 'JEDI', 'value' => 'JEDI'] ] ]); Field Resolution When object field is of Enum Type, field resolver is expected to return an internal representation of corresponding Enum item ( value in config). graphql-php will then serialize this value to name to include in response: <?php use GraphQL\\Type\\Definition\\EnumType; use GraphQL\\Type\\Definition\\ObjectType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => [ 'value' => 4, 'description' => 'Released in 1977.' ], 'EMPIRE' => [ 'value' => 5, 'description' => 'Released in 1980.' ], 'JEDI' => [ 'value' => 6, 'description' => 'Released in 1983.' ], ] ]); $heroType = new ObjectType([ 'name' => 'Hero', 'fields' => [ 'appearsIn' => [ 'type' => $episodeEnum, 'resolve' => function() { return 5; // Actual entry in response will be 'appearsIn' => 'EMPIRE' } ] ] ]); The Reverse is true when the enum is used as input type (e.g. as field argument). GraphQL will treat enum input as name and convert it into value before passing to your app. For example, given object type definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $heroType = new ObjectType([ 'name' => 'Hero', 'fields' => [ 'appearsIn' => [ 'type' => Type::boolean(), 'args' => [ 'episode' => Type::nonNull($enumType) ], 'resolve' => function($_value, $args) { return $args['episode'] === 5 ? true : false; } ] ] ]); Then following query: fragment on Hero { appearsInNewHope: appearsIn(NEWHOPE) appearsInEmpire: appearsIn(EMPIRE) } will return: [ 'appearsInNewHope' => false, 'appearsInEmpire' => true ]","title":"Enumeration Types"},{"location":"type-system/enum-types/#enum-type-definition","text":"Enumeration types are a special kind of scalar that is restricted to a particular set of allowed values. In graphql-php enum type is an instance of GraphQL\\Type\\Definition\\EnumType which accepts configuration array in constructor: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => [ 'value' => 4, 'description' => 'Released in 1977.' ], 'EMPIRE' => [ 'value' => 5, 'description' => 'Released in 1980.' ], 'JEDI' => [ 'value' => 6, 'description' => 'Released in 1983.' ], ] ]); This example uses an inline style for Enum Type definition, but you can also use inheritance or type language .","title":"Enum Type Definition"},{"location":"type-system/enum-types/#configuration-options","text":"Enum Type constructor accepts an array with following options: Option Type Notes name string Required. Name of the type. When not set - inferred from array key (read about shorthand field definition below) description string Plain-text description of the type for clients (e.g. used by GraphiQL for auto-generated documentation) values array List of enumerated items, see below for expected structure of each entry Each entry of values array in turn accepts following options: Option Type Notes name string Required. Name of the item. When not set - inferred from array key (read about shorthand field definition below) value mixed Internal representation of enum item in your application (could be any value, including complex objects or callbacks) description string Plain-text description of enum value for clients (e.g. used by GraphiQL for auto-generated documentation) deprecationReason string Text describing why this enum value is deprecated. When not empty - item will not be returned by introspection queries (unless forced)","title":"Configuration options"},{"location":"type-system/enum-types/#shorthand-definitions","text":"If internal representation of enumerated item is the same as item name, then you can use following shorthand for definition: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => ['NEWHOPE', 'EMPIRE', 'JEDI'] ]); which is equivalent of: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => ['value' => 'NEWHOPE'], 'EMPIRE' => ['value' => 'EMPIRE'], 'JEDI' => ['value' => 'JEDI'] ] ]); which is in turn equivalent of the full form: <?php use GraphQL\\Type\\Definition\\EnumType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ ['name' => 'NEWHOPE', 'value' => 'NEWHOPE'], ['name' => 'EMPIRE', 'value' => 'EMPIRE'], ['name' => 'JEDI', 'value' => 'JEDI'] ] ]);","title":"Shorthand definitions"},{"location":"type-system/enum-types/#field-resolution","text":"When object field is of Enum Type, field resolver is expected to return an internal representation of corresponding Enum item ( value in config). graphql-php will then serialize this value to name to include in response: <?php use GraphQL\\Type\\Definition\\EnumType; use GraphQL\\Type\\Definition\\ObjectType; $episodeEnum = new EnumType([ 'name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => [ 'NEWHOPE' => [ 'value' => 4, 'description' => 'Released in 1977.' ], 'EMPIRE' => [ 'value' => 5, 'description' => 'Released in 1980.' ], 'JEDI' => [ 'value' => 6, 'description' => 'Released in 1983.' ], ] ]); $heroType = new ObjectType([ 'name' => 'Hero', 'fields' => [ 'appearsIn' => [ 'type' => $episodeEnum, 'resolve' => function() { return 5; // Actual entry in response will be 'appearsIn' => 'EMPIRE' } ] ] ]); The Reverse is true when the enum is used as input type (e.g. as field argument). GraphQL will treat enum input as name and convert it into value before passing to your app. For example, given object type definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $heroType = new ObjectType([ 'name' => 'Hero', 'fields' => [ 'appearsIn' => [ 'type' => Type::boolean(), 'args' => [ 'episode' => Type::nonNull($enumType) ], 'resolve' => function($_value, $args) { return $args['episode'] === 5 ? true : false; } ] ] ]); Then following query: fragment on Hero { appearsInNewHope: appearsIn(NEWHOPE) appearsInEmpire: appearsIn(EMPIRE) } will return: [ 'appearsInNewHope' => false, 'appearsInEmpire' => true ]","title":"Field Resolution"},{"location":"type-system/input-types/","text":"Mutations Mutation is just a field of a regular Object Type with arguments. For GraphQL PHP runtime there is no difference between query fields with arguments and mutations. They are executed almost identically. To some extent, Mutation is just a convention described in the GraphQL spec. Here is an example of a mutation operation: mutation CreateReviewForEpisode($ep: EpisodeInput!, $review: ReviewInput!) { createReview(episode: $ep, review: $review) { stars commentary } } To execute such a mutation, you need Mutation type at the root of your schema : <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $myMutationType = new ObjectType([ 'name' => 'Mutation', 'fields' => [ // List of mutations: 'createReview' => [ 'args' => [ 'episode' => Type::nonNull($episodeInputType), 'review' => Type::nonNull($reviewInputType) ], 'type' => new ObjectType([ 'name' => 'CreateReviewOutput', 'fields' => [ 'stars' => ['type' => Type::int()], 'commentary' => ['type' => Type::string()] ] ]), ], // ... other mutations ] ]); As you can see, the only difference from regular object type is the semantics of field names (verbs vs nouns). Also as we see arguments can be of complex types. To leverage the full power of mutations (and field arguments in general) you must learn how to create complex input types. About Input and Output Types All types in GraphQL are of two categories: input and output . Output types (or field types) are: Scalar , Enum , Object , Interface , Union Input types (or argument types) are: Scalar , Enum , InputObject Obviously, NonNull and List types belong to both categories depending on their inner type. Until now all examples of field arguments in this documentation were of Scalar or Enum types. But you can also pass complex objects. This is particularly valuable in case of mutations, where input data might be rather complex. Input Object Type GraphQL specification defines Input Object Type for complex inputs. It is similar to ObjectType except that it's fields have no args or resolve options and their type must be input type. In graphql-php Input Object Type is an instance of GraphQL\\Type\\Definition\\InputObjectType (or one of it subclasses) which accepts configuration array in constructor: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\InputObjectType; $filters = new InputObjectType([ 'name' => 'StoryFiltersInput', 'fields' => [ 'author' => [ 'type' => Type::id(), 'description' => 'Only show stories with this author id' ], 'popular' => [ 'type' => Type::boolean(), 'description' => 'Only show popular stories (liked by several people)' ], 'tags' => [ 'type' => Type::listOf(Type::string()), 'description' => 'Only show stories which contain all of those tags' ] ] ]); Every field may be of other InputObjectType (thus complex hierarchies of inputs are possible) Configuration options The constructor of InputObjectType accepts array with only 3 options: Option Type Notes name string Required. Unique name of this object type within Schema fields array or callable Required . An array describing object fields or callable returning such an array (see below). description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) Every field is an array with following entries: Option Type Notes name string Required. Name of the input field. When not set - inferred from fields array key type Type Required. Instance of one of Input Types ( Scalar , Enum , InputObjectType + any combination of those with nonNull and listOf modifiers) description string Plain-text description of this input field for clients (e.g. used by GraphiQL for auto-generated documentation) defaultValue scalar Default value of this input field Using Input Object Type In the example above we defined our InputObjectType. Now let's use it in one of field arguments: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'stories' => [ 'type' => Type::listOf($storyType), 'args' => [ 'filters' => [ 'type' => Type::nonNull($filters), 'defaultValue' => [ 'popular' => true ] ] ], 'resolve' => function($rootValue, $args) { return DataSource::filterStories($args['filters']); } ] ] ]); (note that you can define defaultValue for fields with complex inputs as associative array). Then GraphQL query could include filters as literal value: { stories(filters: {author: \"1\", popular: false}) } Or as query variable: query($filters: StoryFiltersInput!) { stories(filters: $filters) } $variables = [ 'filters' => [ \"author\" => \"1\", \"popular\" => false ] ]; graphql-php will validate the input against your InputObjectType definition and pass it to your resolver as $args['filters']","title":"Mutations and Input Types"},{"location":"type-system/input-types/#mutations","text":"Mutation is just a field of a regular Object Type with arguments. For GraphQL PHP runtime there is no difference between query fields with arguments and mutations. They are executed almost identically. To some extent, Mutation is just a convention described in the GraphQL spec. Here is an example of a mutation operation: mutation CreateReviewForEpisode($ep: EpisodeInput!, $review: ReviewInput!) { createReview(episode: $ep, review: $review) { stars commentary } } To execute such a mutation, you need Mutation type at the root of your schema : <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $myMutationType = new ObjectType([ 'name' => 'Mutation', 'fields' => [ // List of mutations: 'createReview' => [ 'args' => [ 'episode' => Type::nonNull($episodeInputType), 'review' => Type::nonNull($reviewInputType) ], 'type' => new ObjectType([ 'name' => 'CreateReviewOutput', 'fields' => [ 'stars' => ['type' => Type::int()], 'commentary' => ['type' => Type::string()] ] ]), ], // ... other mutations ] ]); As you can see, the only difference from regular object type is the semantics of field names (verbs vs nouns). Also as we see arguments can be of complex types. To leverage the full power of mutations (and field arguments in general) you must learn how to create complex input types.","title":"Mutations"},{"location":"type-system/input-types/#about-input-and-output-types","text":"All types in GraphQL are of two categories: input and output . Output types (or field types) are: Scalar , Enum , Object , Interface , Union Input types (or argument types) are: Scalar , Enum , InputObject Obviously, NonNull and List types belong to both categories depending on their inner type. Until now all examples of field arguments in this documentation were of Scalar or Enum types. But you can also pass complex objects. This is particularly valuable in case of mutations, where input data might be rather complex.","title":"About Input and Output Types"},{"location":"type-system/input-types/#input-object-type","text":"GraphQL specification defines Input Object Type for complex inputs. It is similar to ObjectType except that it's fields have no args or resolve options and their type must be input type. In graphql-php Input Object Type is an instance of GraphQL\\Type\\Definition\\InputObjectType (or one of it subclasses) which accepts configuration array in constructor: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\InputObjectType; $filters = new InputObjectType([ 'name' => 'StoryFiltersInput', 'fields' => [ 'author' => [ 'type' => Type::id(), 'description' => 'Only show stories with this author id' ], 'popular' => [ 'type' => Type::boolean(), 'description' => 'Only show popular stories (liked by several people)' ], 'tags' => [ 'type' => Type::listOf(Type::string()), 'description' => 'Only show stories which contain all of those tags' ] ] ]); Every field may be of other InputObjectType (thus complex hierarchies of inputs are possible)","title":"Input Object Type"},{"location":"type-system/input-types/#configuration-options","text":"The constructor of InputObjectType accepts array with only 3 options: Option Type Notes name string Required. Unique name of this object type within Schema fields array or callable Required . An array describing object fields or callable returning such an array (see below). description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) Every field is an array with following entries: Option Type Notes name string Required. Name of the input field. When not set - inferred from fields array key type Type Required. Instance of one of Input Types ( Scalar , Enum , InputObjectType + any combination of those with nonNull and listOf modifiers) description string Plain-text description of this input field for clients (e.g. used by GraphiQL for auto-generated documentation) defaultValue scalar Default value of this input field","title":"Configuration options"},{"location":"type-system/input-types/#using-input-object-type","text":"In the example above we defined our InputObjectType. Now let's use it in one of field arguments: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'stories' => [ 'type' => Type::listOf($storyType), 'args' => [ 'filters' => [ 'type' => Type::nonNull($filters), 'defaultValue' => [ 'popular' => true ] ] ], 'resolve' => function($rootValue, $args) { return DataSource::filterStories($args['filters']); } ] ] ]); (note that you can define defaultValue for fields with complex inputs as associative array). Then GraphQL query could include filters as literal value: { stories(filters: {author: \"1\", popular: false}) } Or as query variable: query($filters: StoryFiltersInput!) { stories(filters: $filters) } $variables = [ 'filters' => [ \"author\" => \"1\", \"popular\" => false ] ]; graphql-php will validate the input against your InputObjectType definition and pass it to your resolver as $args['filters']","title":"Using Input Object Type"},{"location":"type-system/interfaces/","text":"Interface Type Definition An Interface is an abstract type that includes a certain set of fields that a type must include to implement the interface. In graphql-php interface type is an instance of GraphQL\\Type\\Definition\\InterfaceType (or one of its subclasses) which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Definition\\InterfaceType; use GraphQL\\Type\\Definition\\Type; $character = new InterfaceType([ 'name' => 'Character', 'description' => 'A character in the Star Wars Trilogy', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::string()), 'description' => 'The id of the character.', ], 'name' => [ 'type' => Type::string(), 'description' => 'The name of the character.' ] ], 'resolveType' => function ($value) { if ($value->type === 'human') { return MyTypes::human(); } else { return MyTypes::droid(); } } ]); This example uses inline style for Interface definition, but you can also use inheritance or type language . Configuration options The constructor of InterfaceType accepts an array. Below is a full list of allowed options: Option Type Notes name string Required. Unique name of this interface type within Schema fields array Required. List of fields required to be defined by interface implementors. Same as Fields for Object Type description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) resolveType callback function($value, $context, ResolveInfo $info) Receives $value from resolver of the parent field and returns concrete interface implementor for this $value . Implementing interface To implement the Interface simply add it to interfaces array of Object Type definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'Human', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::string()), 'description' => 'The id of the character.', ], 'name' => [ 'type' => Type::string(), 'description' => 'The name of the character.' ] ], 'interfaces' => [ $character ] ]); Note that Object Type must include all fields of interface with exact same types (including nonNull specification) and arguments. The only exception is when object's field type is more specific than the type of this field defined in interface (see Covariant return types for interface fields below) Covariant return types for interface fields Object types implementing interface may change the field type to more specific. Example: interface A { field1: A } type B implements A { field1: B } Sharing Interface fields Since every Object Type implementing an Interface must have the same set of fields - it often makes sense to reuse field definitions of Interface in Object Types: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'Human', 'interfaces' => [ $character ], 'fields' => [ 'height' => Type::float(), $character->getField('id'), $character->getField('name') ] ]); In this case, field definitions are created only once (as a part of Interface Type) and then reused by all interface implementors. It can save several microseconds and kilobytes + ensures that field definitions of Interface and implementors are always in sync. Yet it creates a problem with the resolution of such fields. There are two ways how shared fields could be resolved: If field resolution algorithm is the same for all Interface implementors - you can simply add resolve option to field definition in Interface itself. If field resolution varies for different implementations - you can specify resolveField option in Object Type config and handle field resolutions there (Note: resolve option in field definition has precedence over resolveField option in object type definition) Interface role in data fetching The only responsibility of interface in Data Fetching process is to return concrete Object Type for given $value in resolveType . Then resolution of fields is delegated to resolvers of this concrete Object Type. If a resolveType option is omitted, graphql-php will loop through all interface implementors and use their isTypeOf callback to pick the first suitable one. This is obviously less efficient than single resolveType call. So it is recommended to define resolveType whenever possible.","title":"Interfaces"},{"location":"type-system/interfaces/#interface-type-definition","text":"An Interface is an abstract type that includes a certain set of fields that a type must include to implement the interface. In graphql-php interface type is an instance of GraphQL\\Type\\Definition\\InterfaceType (or one of its subclasses) which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Definition\\InterfaceType; use GraphQL\\Type\\Definition\\Type; $character = new InterfaceType([ 'name' => 'Character', 'description' => 'A character in the Star Wars Trilogy', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::string()), 'description' => 'The id of the character.', ], 'name' => [ 'type' => Type::string(), 'description' => 'The name of the character.' ] ], 'resolveType' => function ($value) { if ($value->type === 'human') { return MyTypes::human(); } else { return MyTypes::droid(); } } ]); This example uses inline style for Interface definition, but you can also use inheritance or type language .","title":"Interface Type Definition"},{"location":"type-system/interfaces/#configuration-options","text":"The constructor of InterfaceType accepts an array. Below is a full list of allowed options: Option Type Notes name string Required. Unique name of this interface type within Schema fields array Required. List of fields required to be defined by interface implementors. Same as Fields for Object Type description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) resolveType callback function($value, $context, ResolveInfo $info) Receives $value from resolver of the parent field and returns concrete interface implementor for this $value .","title":"Configuration options"},{"location":"type-system/interfaces/#implementing-interface","text":"To implement the Interface simply add it to interfaces array of Object Type definition: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'Human', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::string()), 'description' => 'The id of the character.', ], 'name' => [ 'type' => Type::string(), 'description' => 'The name of the character.' ] ], 'interfaces' => [ $character ] ]); Note that Object Type must include all fields of interface with exact same types (including nonNull specification) and arguments. The only exception is when object's field type is more specific than the type of this field defined in interface (see Covariant return types for interface fields below)","title":"Implementing interface"},{"location":"type-system/interfaces/#covariant-return-types-for-interface-fields","text":"Object types implementing interface may change the field type to more specific. Example: interface A { field1: A } type B implements A { field1: B }","title":"Covariant return types for interface fields"},{"location":"type-system/interfaces/#sharing-interface-fields","text":"Since every Object Type implementing an Interface must have the same set of fields - it often makes sense to reuse field definitions of Interface in Object Types: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'Human', 'interfaces' => [ $character ], 'fields' => [ 'height' => Type::float(), $character->getField('id'), $character->getField('name') ] ]); In this case, field definitions are created only once (as a part of Interface Type) and then reused by all interface implementors. It can save several microseconds and kilobytes + ensures that field definitions of Interface and implementors are always in sync. Yet it creates a problem with the resolution of such fields. There are two ways how shared fields could be resolved: If field resolution algorithm is the same for all Interface implementors - you can simply add resolve option to field definition in Interface itself. If field resolution varies for different implementations - you can specify resolveField option in Object Type config and handle field resolutions there (Note: resolve option in field definition has precedence over resolveField option in object type definition)","title":"Sharing Interface fields"},{"location":"type-system/interfaces/#interface-role-in-data-fetching","text":"The only responsibility of interface in Data Fetching process is to return concrete Object Type for given $value in resolveType . Then resolution of fields is delegated to resolvers of this concrete Object Type. If a resolveType option is omitted, graphql-php will loop through all interface implementors and use their isTypeOf callback to pick the first suitable one. This is obviously less efficient than single resolveType call. So it is recommended to define resolveType whenever possible.","title":"Interface role in data fetching"},{"location":"type-system/lists-and-nonnulls/","text":"Lists graphql-php provides built-in support for lists. In order to create list type - wrap existing type with GraphQL\\Type\\Definition\\Type::listOf() modifier: <?php namespace MyApp; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'emails' => [ 'type' => Type::listOf(Type::string()), 'resolve' => function() { return ['jon@example.com', 'jonny@example.com']; } ] ] ]); Resolvers for such fields are expected to return array or instance of PHP's built-in Traversable interface ( null is allowed by default too). If returned value is not of one of these types - graphql-php will add an error to result and set the field value to null (only if the field is nullable, see below for non-null fields). Non-Null fields By default in GraphQL, every field can have a null value. To indicate that some field always returns non-null value - use GraphQL\\Type\\Definition\\Type::nonNull() modifier: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'User', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::id()), 'resolve' => function() { return uniqid(); } ], 'emails' => [ 'type' => Type::nonNull(Type::listOf(Type::string())), 'resolve' => function() { return ['jon@example.com', 'jonny@example.com']; } ] ] ]); If resolver of non-null field returns null , graphql-php will add an error to result and exclude the whole object from the output (an error will bubble to first nullable parent field which will be set to null ). Read the section on Data Fetching for details.","title":"Lists and Non-Null"},{"location":"type-system/lists-and-nonnulls/#lists","text":"graphql-php provides built-in support for lists. In order to create list type - wrap existing type with GraphQL\\Type\\Definition\\Type::listOf() modifier: <?php namespace MyApp; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = new ObjectType([ 'name' => 'User', 'fields' => [ 'emails' => [ 'type' => Type::listOf(Type::string()), 'resolve' => function() { return ['jon@example.com', 'jonny@example.com']; } ] ] ]); Resolvers for such fields are expected to return array or instance of PHP's built-in Traversable interface ( null is allowed by default too). If returned value is not of one of these types - graphql-php will add an error to result and set the field value to null (only if the field is nullable, see below for non-null fields).","title":"Lists"},{"location":"type-system/lists-and-nonnulls/#non-null-fields","text":"By default in GraphQL, every field can have a null value. To indicate that some field always returns non-null value - use GraphQL\\Type\\Definition\\Type::nonNull() modifier: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $humanType = new ObjectType([ 'name' => 'User', 'fields' => [ 'id' => [ 'type' => Type::nonNull(Type::id()), 'resolve' => function() { return uniqid(); } ], 'emails' => [ 'type' => Type::nonNull(Type::listOf(Type::string())), 'resolve' => function() { return ['jon@example.com', 'jonny@example.com']; } ] ] ]); If resolver of non-null field returns null , graphql-php will add an error to result and exclude the whole object from the output (an error will bubble to first nullable parent field which will be set to null ). Read the section on Data Fetching for details.","title":"Non-Null fields"},{"location":"type-system/object-types/","text":"Object Type Definition Object Type is the most frequently used primitive in a typical GraphQL application. Conceptually Object Type is a collection of Fields. Each field, in turn, has its own type which allows building complex hierarchies. In graphql-php object type is an instance of GraphQL\\Type\\Definition\\ObjectType (or one of it subclasses) which accepts configuration array in constructor: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Examples\\Blog\\Data\\DataSource; use GraphQL\\Examples\\Blog\\Data\\Story; $userType = new ObjectType([ 'name' => 'User', 'description' => 'Our blog visitor', 'fields' => [ 'firstName' => [ 'type' => Type::string(), 'description' => 'User first name' ], 'email' => Type::string() ] ]); $blogStory = new ObjectType([ 'name' => 'Story', 'fields' => [ 'body' => Type::string(), 'author' => [ 'type' => $userType, 'description' => 'Story author', 'resolve' => function(Story $blogStory) { return DataSource::findUser($blogStory->authorId); } ], 'likes' => [ 'type' => Type::listOf($userType), 'description' => 'List of users who liked the story', 'args' => [ 'limit' => [ 'type' => Type::int(), 'description' => 'Limit the number of recent likes returned', 'defaultValue' => 10 ] ], 'resolve' => function(Story $blogStory, $args) { return DataSource::findLikes($blogStory->id, $args['limit']); } ] ] ]); This example uses inline style for Object Type definitions, but you can also use inheritance or type language . Configuration options Object type constructor expects configuration array. Below is a full list of available options: Option Type Notes name string Required. Unique name of this object type within Schema fields array or callable Required . An array describing object fields or callable returning such an array. See Fields section below for expected structure of each array entry. See also the section on Circular types for an explanation of when to use callable for this option. description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) interfaces array or callable List of interfaces implemented by this type or callable returning such a list. See Interface Types for details. See also the section on Circular types for an explanation of when to use callable for this option. isTypeOf callable function($value, $context, ResolveInfo $info) Expected to return true if $value qualifies for this type (see section about Abstract Type Resolution for explanation). resolveField callable function($value, $args, $context, ResolveInfo $info) Given the $value of this type, it is expected to return value for a field defined in $info->fieldName . A good place to define a type-specific strategy for field resolution. See section on Data Fetching for details. Field configuration options Below is a full list of available field configuration options: Option Type Notes name string Required. Name of the field. When not set - inferred from fields array key (read about shorthand field definition below) type Type Required. An instance of internal or custom type. Note: type must be represented by a single instance within one schema (see also Type Registry ) args array An array of possible type arguments. Each entry is expected to be an array with keys: name , type , description , defaultValue . See Field Arguments section below. resolve callable function($value, $args, $context, ResolveInfo $info) Given the $value of this type, it is expected to return actual value of the current field. See section on Data Fetching for details complexity callable function($childrenComplexity, $args) Used to restrict query complexity. The feature is disabled by default, read about Security to use it. description string Plain-text description of this field for clients (e.g. used by GraphiQL for auto-generated documentation) deprecationReason string Text describing why this field is deprecated. When not empty - field will not be returned by introspection queries (unless forced) Field arguments Every field on a GraphQL object type can have zero or more arguments, defined in args option of field definition. Each argument is an array with following options: Option Type Notes name string Required. Name of the argument. When not set - inferred from args array key type Type Required. Instance of one of Input Types ( scalar , enum , InputObjectType + any combination of those with nonNull and listOf modifiers) description string Plain-text description of this argument for clients (e.g. used by GraphiQL for auto-generated documentation) defaultValue scalar Default value for this argument Shorthand field definitions Fields can be also defined in shorthand notation (with only name and type options): 'fields' => [ 'id' => Type::id(), 'fieldName' => $fieldType ] which is equivalent of: 'fields' => [ 'id' => ['type' => Type::id()], 'fieldName' => ['type' => $fieldName] ] which is in turn equivalent of the full form: 'fields' => [ ['name' => 'id', 'type' => Type::id()], ['name' => 'fieldName', 'type' => $fieldName] ] Same shorthand notation applies to field arguments as well. Recurring and circular types Almost all real-world applications contain recurring or circular types. Think user friends or nested comments for example. graphql-php allows such types, but you have to use callable in option fields (and/or interfaces ). For example: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = null; $userType = new ObjectType([ 'name' => 'User', 'fields' => function() use (&$userType) { return [ 'email' => [ 'type' => Type::string() ], 'friends' => [ 'type' => Type::listOf($userType) ] ]; } ]); Same example for inheritance style of type definitions using TypeRegistry : <?php namespace MyApp; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; class UserType extends ObjectType { public function __construct() { $config = [ 'fields' => function() { return [ 'email' => MyTypes::string(), 'friends' => MyTypes::listOf(MyTypes::user()) ]; } ]; parent::__construct($config); } } class MyTypes { private static $user; public static function user() { return self::$user ?: (self::$user = new UserType()); } public static function string() { return Type::string(); } public static function listOf($type) { return Type::listOf($type); } } Field Resolution Field resolution is the primary mechanism in graphql-php for returning actual data for your fields. It is implemented using resolveField callable in type definition or resolve callable in field definition (which has precedence). Read the section on Data Fetching for a complete description of this process. Custom Metadata All types in graphql-php accept configuration array. In some cases, you may be interested in passing your own metadata for type or field definition. graphql-php preserves original configuration array in every type or field instance in public property $config . Use it to implement app-level mappings and definitions.","title":"Object Types"},{"location":"type-system/object-types/#object-type-definition","text":"Object Type is the most frequently used primitive in a typical GraphQL application. Conceptually Object Type is a collection of Fields. Each field, in turn, has its own type which allows building complex hierarchies. In graphql-php object type is an instance of GraphQL\\Type\\Definition\\ObjectType (or one of it subclasses) which accepts configuration array in constructor: <?php namespace MyApp; use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Examples\\Blog\\Data\\DataSource; use GraphQL\\Examples\\Blog\\Data\\Story; $userType = new ObjectType([ 'name' => 'User', 'description' => 'Our blog visitor', 'fields' => [ 'firstName' => [ 'type' => Type::string(), 'description' => 'User first name' ], 'email' => Type::string() ] ]); $blogStory = new ObjectType([ 'name' => 'Story', 'fields' => [ 'body' => Type::string(), 'author' => [ 'type' => $userType, 'description' => 'Story author', 'resolve' => function(Story $blogStory) { return DataSource::findUser($blogStory->authorId); } ], 'likes' => [ 'type' => Type::listOf($userType), 'description' => 'List of users who liked the story', 'args' => [ 'limit' => [ 'type' => Type::int(), 'description' => 'Limit the number of recent likes returned', 'defaultValue' => 10 ] ], 'resolve' => function(Story $blogStory, $args) { return DataSource::findLikes($blogStory->id, $args['limit']); } ] ] ]); This example uses inline style for Object Type definitions, but you can also use inheritance or type language .","title":"Object Type Definition"},{"location":"type-system/object-types/#configuration-options","text":"Object type constructor expects configuration array. Below is a full list of available options: Option Type Notes name string Required. Unique name of this object type within Schema fields array or callable Required . An array describing object fields or callable returning such an array. See Fields section below for expected structure of each array entry. See also the section on Circular types for an explanation of when to use callable for this option. description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) interfaces array or callable List of interfaces implemented by this type or callable returning such a list. See Interface Types for details. See also the section on Circular types for an explanation of when to use callable for this option. isTypeOf callable function($value, $context, ResolveInfo $info) Expected to return true if $value qualifies for this type (see section about Abstract Type Resolution for explanation). resolveField callable function($value, $args, $context, ResolveInfo $info) Given the $value of this type, it is expected to return value for a field defined in $info->fieldName . A good place to define a type-specific strategy for field resolution. See section on Data Fetching for details.","title":"Configuration options"},{"location":"type-system/object-types/#field-configuration-options","text":"Below is a full list of available field configuration options: Option Type Notes name string Required. Name of the field. When not set - inferred from fields array key (read about shorthand field definition below) type Type Required. An instance of internal or custom type. Note: type must be represented by a single instance within one schema (see also Type Registry ) args array An array of possible type arguments. Each entry is expected to be an array with keys: name , type , description , defaultValue . See Field Arguments section below. resolve callable function($value, $args, $context, ResolveInfo $info) Given the $value of this type, it is expected to return actual value of the current field. See section on Data Fetching for details complexity callable function($childrenComplexity, $args) Used to restrict query complexity. The feature is disabled by default, read about Security to use it. description string Plain-text description of this field for clients (e.g. used by GraphiQL for auto-generated documentation) deprecationReason string Text describing why this field is deprecated. When not empty - field will not be returned by introspection queries (unless forced)","title":"Field configuration options"},{"location":"type-system/object-types/#field-arguments","text":"Every field on a GraphQL object type can have zero or more arguments, defined in args option of field definition. Each argument is an array with following options: Option Type Notes name string Required. Name of the argument. When not set - inferred from args array key type Type Required. Instance of one of Input Types ( scalar , enum , InputObjectType + any combination of those with nonNull and listOf modifiers) description string Plain-text description of this argument for clients (e.g. used by GraphiQL for auto-generated documentation) defaultValue scalar Default value for this argument","title":"Field arguments"},{"location":"type-system/object-types/#shorthand-field-definitions","text":"Fields can be also defined in shorthand notation (with only name and type options): 'fields' => [ 'id' => Type::id(), 'fieldName' => $fieldType ] which is equivalent of: 'fields' => [ 'id' => ['type' => Type::id()], 'fieldName' => ['type' => $fieldName] ] which is in turn equivalent of the full form: 'fields' => [ ['name' => 'id', 'type' => Type::id()], ['name' => 'fieldName', 'type' => $fieldName] ] Same shorthand notation applies to field arguments as well.","title":"Shorthand field definitions"},{"location":"type-system/object-types/#recurring-and-circular-types","text":"Almost all real-world applications contain recurring or circular types. Think user friends or nested comments for example. graphql-php allows such types, but you have to use callable in option fields (and/or interfaces ). For example: <?php use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; $userType = null; $userType = new ObjectType([ 'name' => 'User', 'fields' => function() use (&$userType) { return [ 'email' => [ 'type' => Type::string() ], 'friends' => [ 'type' => Type::listOf($userType) ] ]; } ]); Same example for inheritance style of type definitions using TypeRegistry : <?php namespace MyApp; use GraphQL\\Type\\Definition\\Type; use GraphQL\\Type\\Definition\\ObjectType; class UserType extends ObjectType { public function __construct() { $config = [ 'fields' => function() { return [ 'email' => MyTypes::string(), 'friends' => MyTypes::listOf(MyTypes::user()) ]; } ]; parent::__construct($config); } } class MyTypes { private static $user; public static function user() { return self::$user ?: (self::$user = new UserType()); } public static function string() { return Type::string(); } public static function listOf($type) { return Type::listOf($type); } }","title":"Recurring and circular types"},{"location":"type-system/object-types/#field-resolution","text":"Field resolution is the primary mechanism in graphql-php for returning actual data for your fields. It is implemented using resolveField callable in type definition or resolve callable in field definition (which has precedence). Read the section on Data Fetching for a complete description of this process.","title":"Field Resolution"},{"location":"type-system/object-types/#custom-metadata","text":"All types in graphql-php accept configuration array. In some cases, you may be interested in passing your own metadata for type or field definition. graphql-php preserves original configuration array in every type or field instance in public property $config . Use it to implement app-level mappings and definitions.","title":"Custom Metadata"},{"location":"type-system/scalar-types/","text":"Built-in Scalar Types GraphQL specification describes several built-in scalar types. In graphql-php they are exposed as static methods of GraphQL\\Type\\Definition\\Type class: <?php use GraphQL\\Type\\Definition\\Type; // Built-in Scalar types: Type::string(); // String type Type::int(); // Int type Type::float(); // Float type Type::boolean(); // Boolean type Type::id(); // ID type Those methods return instances of GraphQL\\Type\\Definition\\ScalarType (actually one of subclasses). Use them directly in type definitions, or wrap in your TypeRegistry (if you use one). Writing Custom Scalar Types In addition to built-in scalars, you can define your own scalar types with additional validation. Typical examples of such types are Email , Date , Url , etc. In order to implement your own type, you must understand how scalars are presented in GraphQL. GraphQL deals with scalars in following cases: When converting internal representation of value returned by your app (e.g. stored in a database or hardcoded in the source code) to serialized representation included in the response. When converting input value passed by a client in variables along with GraphQL query to internal representation of your app. When converting input literal value hardcoded in GraphQL query (e.g. field argument value) to the internal representation of your app. Those cases are covered by methods serialize , parseValue and parseLiteral of abstract ScalarType class respectively. Here is an example of a simple Email type: <?php namespace MyApp; use GraphQL\\Error\\Error; use GraphQL\\Error\\InvariantViolation; use GraphQL\\Language\\AST\\StringValueNode; use GraphQL\\Type\\Definition\\ScalarType; use GraphQL\\Utils\\Utils; class EmailType extends ScalarType { // Note: name can be omitted. In this case it will be inferred from class name // (suffix \"Type\" will be dropped) public $name = 'Email'; /** * Serializes an internal value to include in a response. * * @param string $value * @return string */ public function serialize($value) { // Assuming internal representation of email is always correct: return $value; // If it might be incorrect and you want to make sure that only correct values are included // in response - use following line instead: // if (!filter_var($value, FILTER_VALIDATE_EMAIL)) { // throw new InvariantViolation(\"Could not serialize following value as email: \" . Utils::printSafe($value)); // } // return $this->parseValue($value); } /** * Parses an externally provided value (query variable) to use as an input * * @param mixed $value * @return mixed */ public function parseValue($value) { if (!filter_var($value, FILTER_VALIDATE_EMAIL)) { throw new Error(\"Cannot represent following value as email: \" . Utils::printSafeJson($value)); } return $value; } /** * Parses an externally provided literal value (hardcoded in GraphQL query) to use as an input. * * E.g. * { * user(email: \"user@example.com\") * } * * @param \\GraphQL\\Language\\AST\\Node $valueNode * @return string * @throws Error */ public function parseLiteral($valueNode) { // Note: throwing GraphQL\\Error\\Error vs \\UnexpectedValueException to benefit from GraphQL // error location in query: if (!$valueNode instanceof StringValueNode) { throw new Error('Query error: Can only parse strings got: ' . $valueNode->kind, [$valueNode]); } if (!filter_var($valueNode->value, FILTER_VALIDATE_EMAIL)) { throw new Error(\"Not a valid email\", [$valueNode]); } return $valueNode->value; } } Or with inline style: <?php use GraphQL\\Type\\Definition\\CustomScalarType; $emailType = new CustomScalarType([ 'name' => 'Email', 'serialize' => function($value) {/* See function body above */}, 'parseValue' => function($value) {/* See function body above */}, 'parseLiteral' => function($valueNode) {/* See function body above */}, ]);","title":"Scalar Types"},{"location":"type-system/scalar-types/#built-in-scalar-types","text":"GraphQL specification describes several built-in scalar types. In graphql-php they are exposed as static methods of GraphQL\\Type\\Definition\\Type class: <?php use GraphQL\\Type\\Definition\\Type; // Built-in Scalar types: Type::string(); // String type Type::int(); // Int type Type::float(); // Float type Type::boolean(); // Boolean type Type::id(); // ID type Those methods return instances of GraphQL\\Type\\Definition\\ScalarType (actually one of subclasses). Use them directly in type definitions, or wrap in your TypeRegistry (if you use one).","title":"Built-in Scalar Types"},{"location":"type-system/scalar-types/#writing-custom-scalar-types","text":"In addition to built-in scalars, you can define your own scalar types with additional validation. Typical examples of such types are Email , Date , Url , etc. In order to implement your own type, you must understand how scalars are presented in GraphQL. GraphQL deals with scalars in following cases: When converting internal representation of value returned by your app (e.g. stored in a database or hardcoded in the source code) to serialized representation included in the response. When converting input value passed by a client in variables along with GraphQL query to internal representation of your app. When converting input literal value hardcoded in GraphQL query (e.g. field argument value) to the internal representation of your app. Those cases are covered by methods serialize , parseValue and parseLiteral of abstract ScalarType class respectively. Here is an example of a simple Email type: <?php namespace MyApp; use GraphQL\\Error\\Error; use GraphQL\\Error\\InvariantViolation; use GraphQL\\Language\\AST\\StringValueNode; use GraphQL\\Type\\Definition\\ScalarType; use GraphQL\\Utils\\Utils; class EmailType extends ScalarType { // Note: name can be omitted. In this case it will be inferred from class name // (suffix \"Type\" will be dropped) public $name = 'Email'; /** * Serializes an internal value to include in a response. * * @param string $value * @return string */ public function serialize($value) { // Assuming internal representation of email is always correct: return $value; // If it might be incorrect and you want to make sure that only correct values are included // in response - use following line instead: // if (!filter_var($value, FILTER_VALIDATE_EMAIL)) { // throw new InvariantViolation(\"Could not serialize following value as email: \" . Utils::printSafe($value)); // } // return $this->parseValue($value); } /** * Parses an externally provided value (query variable) to use as an input * * @param mixed $value * @return mixed */ public function parseValue($value) { if (!filter_var($value, FILTER_VALIDATE_EMAIL)) { throw new Error(\"Cannot represent following value as email: \" . Utils::printSafeJson($value)); } return $value; } /** * Parses an externally provided literal value (hardcoded in GraphQL query) to use as an input. * * E.g. * { * user(email: \"user@example.com\") * } * * @param \\GraphQL\\Language\\AST\\Node $valueNode * @return string * @throws Error */ public function parseLiteral($valueNode) { // Note: throwing GraphQL\\Error\\Error vs \\UnexpectedValueException to benefit from GraphQL // error location in query: if (!$valueNode instanceof StringValueNode) { throw new Error('Query error: Can only parse strings got: ' . $valueNode->kind, [$valueNode]); } if (!filter_var($valueNode->value, FILTER_VALIDATE_EMAIL)) { throw new Error(\"Not a valid email\", [$valueNode]); } return $valueNode->value; } } Or with inline style: <?php use GraphQL\\Type\\Definition\\CustomScalarType; $emailType = new CustomScalarType([ 'name' => 'Email', 'serialize' => function($value) {/* See function body above */}, 'parseValue' => function($value) {/* See function body above */}, 'parseLiteral' => function($valueNode) {/* See function body above */}, ]);","title":"Writing Custom Scalar Types"},{"location":"type-system/schema/","text":"Schema Definition The schema is a container of your type hierarchy, which accepts root types in a constructor and provides methods for receiving information about your types to internal GrahpQL tools. In graphql-php schema is an instance of GraphQL\\Type\\Schema which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Schema; $schema = new Schema([ 'query' => $queryType, 'mutation' => $mutationType, ]); See possible constructor options below . Query and Mutation types The schema consists of two root types: Query type is a surface of your read API Mutation type (optional) exposes write API by declaring all possible mutations in your app. Query and Mutation types are regular object types containing root-level fields of your API: <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'hello' => [ 'type' => Type::string(), 'resolve' => function() { return 'Hello World!'; } ], 'hero' => [ 'type' => $characterInterface, 'args' => [ 'episode' => [ 'type' => $episodeEnum ] ], 'resolve' => function ($rootValue, $args) { return StarWarsData::getHero(isset($args['episode']) ? $args['episode'] : null); }, ] ] ]); $mutationType = new ObjectType([ 'name' => 'Mutation', 'fields' => [ 'createReview' => [ 'type' => $createReviewOutput, 'args' => [ 'episode' => $episodeEnum, 'review' => $reviewInputObject ], 'resolve' => function($val, $args) { // TODOC } ] ] ]); Keep in mind that other than the special meaning of declaring a surface area of your API, those types are the same as any other object type , and their fields work exactly the same way. Mutation type is also just a regular object type. The difference is in semantics. Field names of Mutation type are usually verbs and they almost always have arguments - quite often with complex input values (see Mutations and Input Types for details). Configuration Options Schema constructor expects an instance of GraphQL\\Type\\SchemaConfig or an array with following options: Option Type Notes query ObjectType Required. Object type (usually named \"Query\") containing root-level fields of your read API mutation ObjectType Object type (usually named \"Mutation\") containing root-level fields of your write API subscription ObjectType Reserved for future subscriptions implementation. Currently presented for compatibility with introspection query of graphql-js , used by various clients (like Relay or GraphiQL) directives Directive[] A full list of directives supported by your schema. By default, contains built-in @skip and @include directives. If you pass your own directives and still want to use built-in directives - add them explicitly. For example: array_merge(GraphQL::getStandardDirectives(), [$myCustomDirective]); types ObjectType[] List of object types which cannot be detected by graphql-php during static schema analysis. Most often it happens when the object type is never referenced in fields directly but is still a part of a schema because it implements an interface which resolves to this object type in its resolveType callable. Note that you are not required to pass all of your types here - it is simply a workaround for concrete use-case. typeLoader callable function($name) Expected to return type instance given the name. Must always return the same instance if called multiple times. See section below on lazy type loading. Using config class If you prefer fluid interface for config with auto-completion in IDE and static time validation, use GraphQL\\Type\\SchemaConfig instead of an array: <?php use GraphQL\\Type\\SchemaConfig; use GraphQL\\Type\\Schema; $config = SchemaConfig::create() ->setQuery($myQueryType) ->setTypeLoader($myTypeLoader); $schema = new Schema($config); Lazy loading of types By default, the schema will scan all of your type, field and argument definitions to serve GraphQL queries. It may cause performance overhead when there are many types in the schema. In this case, it is recommended to pass typeLoader option to schema constructor and define all of your object fields as callbacks. Type loading concept is very similar to PHP class loading, but keep in mind that typeLoader must always return the same instance of a type. Usage example: <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Schema; class Types { private $types = []; public function get($name) { if (!isset($this->types[$name])) { $this->types[$name] = $this->{$name}(); } return $this->types[$name]; } private function MyTypeA() { return new ObjectType([ 'name' => 'MyTypeA', 'fields' => function() { return [ 'b' => ['type' => $this->get('MyTypeB')] ]; } ]); } private function MyTypeB() { // ... } } $registry = new Types(); $schema = new Schema([ 'query' => $registry->get('Query'), 'typeLoader' => function($name) use ($registry) { return $registry->get($name); } ]); Schema Validation By default, the schema is created with only shallow validation of type and field definitions (because validation requires full schema scan and is very costly on bigger schemas). But there is a special method assertValid() on schema instance which throws GraphQL\\Error\\InvariantViolation exception when it encounters any error, like: Invalid types used for fields/arguments Missing interface implementations Invalid interface implementations Other schema errors... Schema validation is supposed to be used in CLI commands or during build step of your app. Don't call it in web requests in production. Usage example: <?php try { $schema = new GraphQL\\Type\\Schema([ 'query' => $myQueryType ]); $schema->assertValid(); } catch (GraphQL\\Error\\InvariantViolation $e) { echo $e->getMessage(); }","title":"Schema"},{"location":"type-system/schema/#schema-definition","text":"The schema is a container of your type hierarchy, which accepts root types in a constructor and provides methods for receiving information about your types to internal GrahpQL tools. In graphql-php schema is an instance of GraphQL\\Type\\Schema which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Schema; $schema = new Schema([ 'query' => $queryType, 'mutation' => $mutationType, ]); See possible constructor options below .","title":"Schema Definition"},{"location":"type-system/schema/#query-and-mutation-types","text":"The schema consists of two root types: Query type is a surface of your read API Mutation type (optional) exposes write API by declaring all possible mutations in your app. Query and Mutation types are regular object types containing root-level fields of your API: <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Definition\\Type; $queryType = new ObjectType([ 'name' => 'Query', 'fields' => [ 'hello' => [ 'type' => Type::string(), 'resolve' => function() { return 'Hello World!'; } ], 'hero' => [ 'type' => $characterInterface, 'args' => [ 'episode' => [ 'type' => $episodeEnum ] ], 'resolve' => function ($rootValue, $args) { return StarWarsData::getHero(isset($args['episode']) ? $args['episode'] : null); }, ] ] ]); $mutationType = new ObjectType([ 'name' => 'Mutation', 'fields' => [ 'createReview' => [ 'type' => $createReviewOutput, 'args' => [ 'episode' => $episodeEnum, 'review' => $reviewInputObject ], 'resolve' => function($val, $args) { // TODOC } ] ] ]); Keep in mind that other than the special meaning of declaring a surface area of your API, those types are the same as any other object type , and their fields work exactly the same way. Mutation type is also just a regular object type. The difference is in semantics. Field names of Mutation type are usually verbs and they almost always have arguments - quite often with complex input values (see Mutations and Input Types for details).","title":"Query and Mutation types"},{"location":"type-system/schema/#configuration-options","text":"Schema constructor expects an instance of GraphQL\\Type\\SchemaConfig or an array with following options: Option Type Notes query ObjectType Required. Object type (usually named \"Query\") containing root-level fields of your read API mutation ObjectType Object type (usually named \"Mutation\") containing root-level fields of your write API subscription ObjectType Reserved for future subscriptions implementation. Currently presented for compatibility with introspection query of graphql-js , used by various clients (like Relay or GraphiQL) directives Directive[] A full list of directives supported by your schema. By default, contains built-in @skip and @include directives. If you pass your own directives and still want to use built-in directives - add them explicitly. For example: array_merge(GraphQL::getStandardDirectives(), [$myCustomDirective]); types ObjectType[] List of object types which cannot be detected by graphql-php during static schema analysis. Most often it happens when the object type is never referenced in fields directly but is still a part of a schema because it implements an interface which resolves to this object type in its resolveType callable. Note that you are not required to pass all of your types here - it is simply a workaround for concrete use-case. typeLoader callable function($name) Expected to return type instance given the name. Must always return the same instance if called multiple times. See section below on lazy type loading.","title":"Configuration Options"},{"location":"type-system/schema/#using-config-class","text":"If you prefer fluid interface for config with auto-completion in IDE and static time validation, use GraphQL\\Type\\SchemaConfig instead of an array: <?php use GraphQL\\Type\\SchemaConfig; use GraphQL\\Type\\Schema; $config = SchemaConfig::create() ->setQuery($myQueryType) ->setTypeLoader($myTypeLoader); $schema = new Schema($config);","title":"Using config class"},{"location":"type-system/schema/#lazy-loading-of-types","text":"By default, the schema will scan all of your type, field and argument definitions to serve GraphQL queries. It may cause performance overhead when there are many types in the schema. In this case, it is recommended to pass typeLoader option to schema constructor and define all of your object fields as callbacks. Type loading concept is very similar to PHP class loading, but keep in mind that typeLoader must always return the same instance of a type. Usage example: <?php use GraphQL\\Type\\Definition\\ObjectType; use GraphQL\\Type\\Schema; class Types { private $types = []; public function get($name) { if (!isset($this->types[$name])) { $this->types[$name] = $this->{$name}(); } return $this->types[$name]; } private function MyTypeA() { return new ObjectType([ 'name' => 'MyTypeA', 'fields' => function() { return [ 'b' => ['type' => $this->get('MyTypeB')] ]; } ]); } private function MyTypeB() { // ... } } $registry = new Types(); $schema = new Schema([ 'query' => $registry->get('Query'), 'typeLoader' => function($name) use ($registry) { return $registry->get($name); } ]);","title":"Lazy loading of types"},{"location":"type-system/schema/#schema-validation","text":"By default, the schema is created with only shallow validation of type and field definitions (because validation requires full schema scan and is very costly on bigger schemas). But there is a special method assertValid() on schema instance which throws GraphQL\\Error\\InvariantViolation exception when it encounters any error, like: Invalid types used for fields/arguments Missing interface implementations Invalid interface implementations Other schema errors... Schema validation is supposed to be used in CLI commands or during build step of your app. Don't call it in web requests in production. Usage example: <?php try { $schema = new GraphQL\\Type\\Schema([ 'query' => $myQueryType ]); $schema->assertValid(); } catch (GraphQL\\Error\\InvariantViolation $e) { echo $e->getMessage(); }","title":"Schema Validation"},{"location":"type-system/type-language/","text":"Defining your schema Since 0.9.0 Type language is a convenient way to define your schema, especially with IDE autocompletion and syntax validation. Here is a simple schema defined in GraphQL type language (e.g. in a separate schema.graphql file): schema { query: Query mutation: Mutation } type Query { greetings(input: HelloInput!): String! } input HelloInput { firstName: String! lastName: String } In order to create schema instance out of this file, use GraphQL\\Utils\\BuildSchema : <?php use GraphQL\\Utils\\BuildSchema; $contents = file_get_contents('schema.graphql'); $schema = BuildSchema::build($contents); By default, such schema is created without any resolvers. We have to rely on default field resolver and root value in order to execute a query against this schema. Performance considerations Since 0.10.0 Method build() produces a lazy schema automatically, so it works efficiently even with very large schemas. But parsing type definition file on each request is suboptimal, so it is recommended to cache intermediate parsed representation of the schema for the production environment: <?php use GraphQL\\Language\\Parser; use GraphQL\\Utils\\BuildSchema; use GraphQL\\Utils\\AST; $cacheFilename = 'cached_schema.php'; if (!file_exists($cacheFilename)) { $document = Parser::parse(file_get_contents('./schema.graphql')); file_put_contents($cacheFilename, \"<?php\\nreturn \" . var_export(AST::toArray($document), true)); } else { $document = AST::fromArray(require $cacheFilename); // fromArray() is a lazy operation as well } $typeConfigDecorator = function () {}; $schema = BuildSchema::build($document, $typeConfigDecorator);","title":"Using Type Language"},{"location":"type-system/type-language/#defining-your-schema","text":"Since 0.9.0 Type language is a convenient way to define your schema, especially with IDE autocompletion and syntax validation. Here is a simple schema defined in GraphQL type language (e.g. in a separate schema.graphql file): schema { query: Query mutation: Mutation } type Query { greetings(input: HelloInput!): String! } input HelloInput { firstName: String! lastName: String } In order to create schema instance out of this file, use GraphQL\\Utils\\BuildSchema : <?php use GraphQL\\Utils\\BuildSchema; $contents = file_get_contents('schema.graphql'); $schema = BuildSchema::build($contents); By default, such schema is created without any resolvers. We have to rely on default field resolver and root value in order to execute a query against this schema.","title":"Defining your schema"},{"location":"type-system/type-language/#performance-considerations","text":"Since 0.10.0 Method build() produces a lazy schema automatically, so it works efficiently even with very large schemas. But parsing type definition file on each request is suboptimal, so it is recommended to cache intermediate parsed representation of the schema for the production environment: <?php use GraphQL\\Language\\Parser; use GraphQL\\Utils\\BuildSchema; use GraphQL\\Utils\\AST; $cacheFilename = 'cached_schema.php'; if (!file_exists($cacheFilename)) { $document = Parser::parse(file_get_contents('./schema.graphql')); file_put_contents($cacheFilename, \"<?php\\nreturn \" . var_export(AST::toArray($document), true)); } else { $document = AST::fromArray(require $cacheFilename); // fromArray() is a lazy operation as well } $typeConfigDecorator = function () {}; $schema = BuildSchema::build($document, $typeConfigDecorator);","title":"Performance considerations"},{"location":"type-system/unions/","text":"Union Type Definition A Union is an abstract type that simply enumerates other Object Types. The value of Union Type is actually a value of one of included Object Types. In graphql-php union type is an instance of GraphQL\\Type\\Definition\\UnionType (or one of its subclasses) which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Definition\\UnionType; $searchResultType = new UnionType([ 'name' => 'SearchResult', 'types' => [ MyTypes::story(), MyTypes::user() ], 'resolveType' => function($value) { if ($value->type === 'story') { return MyTypes::story(); } else { return MyTypes::user(); } } ]); This example uses inline style for Union definition, but you can also use inheritance or type language . Configuration options The constructor of UnionType accepts an array. Below is a full list of allowed options: Option Type Notes name string Required. Unique name of this interface type within Schema types array Required. List of Object Types included in this Union. Note that you can't create a Union type out of Interfaces or other Unions. description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) resolveType callback function($value, $context, ResolveInfo $info) Receives $value from resolver of the parent field and returns concrete Object Type for this $value .","title":"Unions"},{"location":"type-system/unions/#union-type-definition","text":"A Union is an abstract type that simply enumerates other Object Types. The value of Union Type is actually a value of one of included Object Types. In graphql-php union type is an instance of GraphQL\\Type\\Definition\\UnionType (or one of its subclasses) which accepts configuration array in a constructor: <?php use GraphQL\\Type\\Definition\\UnionType; $searchResultType = new UnionType([ 'name' => 'SearchResult', 'types' => [ MyTypes::story(), MyTypes::user() ], 'resolveType' => function($value) { if ($value->type === 'story') { return MyTypes::story(); } else { return MyTypes::user(); } } ]); This example uses inline style for Union definition, but you can also use inheritance or type language .","title":"Union Type Definition"},{"location":"type-system/unions/#configuration-options","text":"The constructor of UnionType accepts an array. Below is a full list of allowed options: Option Type Notes name string Required. Unique name of this interface type within Schema types array Required. List of Object Types included in this Union. Note that you can't create a Union type out of Interfaces or other Unions. description string Plain-text description of this type for clients (e.g. used by GraphiQL for auto-generated documentation) resolveType callback function($value, $context, ResolveInfo $info) Receives $value from resolver of the parent field and returns concrete Object Type for this $value .","title":"Configuration options"}]}
\ No newline at end of file
diff --git a/search/text.js b/search/text.js
deleted file mode 100755
index 17921b6..0000000
--- a/search/text.js
+++ /dev/null
@@ -1,390 +0,0 @@
-/**
- * @license RequireJS text 2.0.12 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved.
- * Available via the MIT or new BSD license.
- * see: http://github.com/requirejs/text for details
- */
-/*jslint regexp: true */
-/*global require, XMLHttpRequest, ActiveXObject,
-  define, window, process, Packages,
-  java, location, Components, FileUtils */
-
-define(['module'], function (module) {
-    'use strict';
-
-    var text, fs, Cc, Ci, xpcIsWindows,
-        progIds = ['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'],
-        xmlRegExp = /^\s*<\?xml(\s)+version=[\'\"](\d)*.(\d)*[\'\"](\s)*\?>/im,
-        bodyRegExp = /<body[^>]*>\s*([\s\S]+)\s*<\/body>/im,
-        hasLocation = typeof location !== 'undefined' && location.href,
-        defaultProtocol = hasLocation && location.protocol && location.protocol.replace(/\:/, ''),
-        defaultHostName = hasLocation && location.hostname,
-        defaultPort = hasLocation && (location.port || undefined),
-        buildMap = {},
-        masterConfig = (module.config && module.config()) || {};
-
-    text = {
-        version: '2.0.12',
-
-        strip: function (content) {
-            //Strips <?xml ...?> declarations so that external SVG and XML
-            //documents can be added to a document without worry. Also, if the string
-            //is an HTML document, only the part inside the body tag is returned.
-            if (content) {
-                content = content.replace(xmlRegExp, "");
-                var matches = content.match(bodyRegExp);
-                if (matches) {
-                    content = matches[1];
-                }
-            } else {
-                content = "";
-            }
-            return content;
-        },
-
-        jsEscape: function (content) {
-            return content.replace(/(['\\])/g, '\\$1')
-                .replace(/[\f]/g, "\\f")
-                .replace(/[\b]/g, "\\b")
-                .replace(/[\n]/g, "\\n")
-                .replace(/[\t]/g, "\\t")
-                .replace(/[\r]/g, "\\r")
-                .replace(/[\u2028]/g, "\\u2028")
-                .replace(/[\u2029]/g, "\\u2029");
-        },
-
-        createXhr: masterConfig.createXhr || function () {
-            //Would love to dump the ActiveX crap in here. Need IE 6 to die first.
-            var xhr, i, progId;
-            if (typeof XMLHttpRequest !== "undefined") {
-                return new XMLHttpRequest();
-            } else if (typeof ActiveXObject !== "undefined") {
-                for (i = 0; i < 3; i += 1) {
-                    progId = progIds[i];
-                    try {
-                        xhr = new ActiveXObject(progId);
-                    } catch (e) {}
-
-                    if (xhr) {
-                        progIds = [progId];  // so faster next time
-                        break;
-                    }
-                }
-            }
-
-            return xhr;
-        },
-
-        /**
-         * Parses a resource name into its component parts. Resource names
-         * look like: module/name.ext!strip, where the !strip part is
-         * optional.
-         * @param {String} name the resource name
-         * @returns {Object} with properties "moduleName", "ext" and "strip"
-         * where strip is a boolean.
-         */
-        parseName: function (name) {
-            var modName, ext, temp,
-                strip = false,
-                index = name.indexOf("."),
-                isRelative = name.indexOf('./') === 0 ||
-                             name.indexOf('../') === 0;
-
-            if (index !== -1 && (!isRelative || index > 1)) {
-                modName = name.substring(0, index);
-                ext = name.substring(index + 1, name.length);
-            } else {
-                modName = name;
-            }
-
-            temp = ext || modName;
-            index = temp.indexOf("!");
-            if (index !== -1) {
-                //Pull off the strip arg.
-                strip = temp.substring(index + 1) === "strip";
-                temp = temp.substring(0, index);
-                if (ext) {
-                    ext = temp;
-                } else {
-                    modName = temp;
-                }
-            }
-
-            return {
-                moduleName: modName,
-                ext: ext,
-                strip: strip
-            };
-        },
-
-        xdRegExp: /^((\w+)\:)?\/\/([^\/\\]+)/,
-
-        /**
-         * Is an URL on another domain. Only works for browser use, returns
-         * false in non-browser environments. Only used to know if an
-         * optimized .js version of a text resource should be loaded
-         * instead.
-         * @param {String} url
-         * @returns Boolean
-         */
-        useXhr: function (url, protocol, hostname, port) {
-            var uProtocol, uHostName, uPort,
-                match = text.xdRegExp.exec(url);
-            if (!match) {
-                return true;
-            }
-            uProtocol = match[2];
-            uHostName = match[3];
-
-            uHostName = uHostName.split(':');
-            uPort = uHostName[1];
-            uHostName = uHostName[0];
-
-            return (!uProtocol || uProtocol === protocol) &&
-                   (!uHostName || uHostName.toLowerCase() === hostname.toLowerCase()) &&
-                   ((!uPort && !uHostName) || uPort === port);
-        },
-
-        finishLoad: function (name, strip, content, onLoad) {
-            content = strip ? text.strip(content) : content;
-            if (masterConfig.isBuild) {
-                buildMap[name] = content;
-            }
-            onLoad(content);
-        },
-
-        load: function (name, req, onLoad, config) {
-            //Name has format: some.module.filext!strip
-            //The strip part is optional.
-            //if strip is present, then that means only get the string contents
-            //inside a body tag in an HTML string. For XML/SVG content it means
-            //removing the <?xml ...?> declarations so the content can be inserted
-            //into the current doc without problems.
-
-            // Do not bother with the work if a build and text will
-            // not be inlined.
-            if (config && config.isBuild && !config.inlineText) {
-                onLoad();
-                return;
-            }
-
-            masterConfig.isBuild = config && config.isBuild;
-
-            var parsed = text.parseName(name),
-                nonStripName = parsed.moduleName +
-                    (parsed.ext ? '.' + parsed.ext : ''),
-                url = req.toUrl(nonStripName),
-                useXhr = (masterConfig.useXhr) ||
-                         text.useXhr;
-
-            // Do not load if it is an empty: url
-            if (url.indexOf('empty:') === 0) {
-                onLoad();
-                return;
-            }
-
-            //Load the text. Use XHR if possible and in a browser.
-            if (!hasLocation || useXhr(url, defaultProtocol, defaultHostName, defaultPort)) {
-                text.get(url, function (content) {
-                    text.finishLoad(name, parsed.strip, content, onLoad);
-                }, function (err) {
-                    if (onLoad.error) {
-                        onLoad.error(err);
-                    }
-                });
-            } else {
-                //Need to fetch the resource across domains. Assume
-                //the resource has been optimized into a JS module. Fetch
-                //by the module name + extension, but do not include the
-                //!strip part to avoid file system issues.
-                req([nonStripName], function (content) {
-                    text.finishLoad(parsed.moduleName + '.' + parsed.ext,
-                                    parsed.strip, content, onLoad);
-                });
-            }
-        },
-
-        write: function (pluginName, moduleName, write, config) {
-            if (buildMap.hasOwnProperty(moduleName)) {
-                var content = text.jsEscape(buildMap[moduleName]);
-                write.asModule(pluginName + "!" + moduleName,
-                               "define(function () { return '" +
-                                   content +
-                               "';});\n");
-            }
-        },
-
-        writeFile: function (pluginName, moduleName, req, write, config) {
-            var parsed = text.parseName(moduleName),
-                extPart = parsed.ext ? '.' + parsed.ext : '',
-                nonStripName = parsed.moduleName + extPart,
-                //Use a '.js' file name so that it indicates it is a
-                //script that can be loaded across domains.
-                fileName = req.toUrl(parsed.moduleName + extPart) + '.js';
-
-            //Leverage own load() method to load plugin value, but only
-            //write out values that do not have the strip argument,
-            //to avoid any potential issues with ! in file names.
-            text.load(nonStripName, req, function (value) {
-                //Use own write() method to construct full module value.
-                //But need to create shell that translates writeFile's
-                //write() to the right interface.
-                var textWrite = function (contents) {
-                    return write(fileName, contents);
-                };
-                textWrite.asModule = function (moduleName, contents) {
-                    return write.asModule(moduleName, fileName, contents);
-                };
-
-                text.write(pluginName, nonStripName, textWrite, config);
-            }, config);
-        }
-    };
-
-    if (masterConfig.env === 'node' || (!masterConfig.env &&
-            typeof process !== "undefined" &&
-            process.versions &&
-            !!process.versions.node &&
-            !process.versions['node-webkit'])) {
-        //Using special require.nodeRequire, something added by r.js.
-        fs = require.nodeRequire('fs');
-
-        text.get = function (url, callback, errback) {
-            try {
-                var file = fs.readFileSync(url, 'utf8');
-                //Remove BOM (Byte Mark Order) from utf8 files if it is there.
-                if (file.indexOf('\uFEFF') === 0) {
-                    file = file.substring(1);
-                }
-                callback(file);
-            } catch (e) {
-                if (errback) {
-                    errback(e);
-                }
-            }
-        };
-    } else if (masterConfig.env === 'xhr' || (!masterConfig.env &&
-            text.createXhr())) {
-        text.get = function (url, callback, errback, headers) {
-            var xhr = text.createXhr(), header;
-            xhr.open('GET', url, true);
-
-            //Allow plugins direct access to xhr headers
-            if (headers) {
-                for (header in headers) {
-                    if (headers.hasOwnProperty(header)) {
-                        xhr.setRequestHeader(header.toLowerCase(), headers[header]);
-                    }
-                }
-            }
-
-            //Allow overrides specified in config
-            if (masterConfig.onXhr) {
-                masterConfig.onXhr(xhr, url);
-            }
-
-            xhr.onreadystatechange = function (evt) {
-                var status, err;
-                //Do not explicitly handle errors, those should be
-                //visible via console output in the browser.
-                if (xhr.readyState === 4) {
-                    status = xhr.status || 0;
-                    if (status > 399 && status < 600) {
-                        //An http 4xx or 5xx error. Signal an error.
-                        err = new Error(url + ' HTTP status: ' + status);
-                        err.xhr = xhr;
-                        if (errback) {
-                            errback(err);
-                        }
-                    } else {
-                        callback(xhr.responseText);
-                    }
-
-                    if (masterConfig.onXhrComplete) {
-                        masterConfig.onXhrComplete(xhr, url);
-                    }
-                }
-            };
-            xhr.send(null);
-        };
-    } else if (masterConfig.env === 'rhino' || (!masterConfig.env &&
-            typeof Packages !== 'undefined' && typeof java !== 'undefined')) {
-        //Why Java, why is this so awkward?
-        text.get = function (url, callback) {
-            var stringBuffer, line,
-                encoding = "utf-8",
-                file = new java.io.File(url),
-                lineSeparator = java.lang.System.getProperty("line.separator"),
-                input = new java.io.BufferedReader(new java.io.InputStreamReader(new java.io.FileInputStream(file), encoding)),
-                content = '';
-            try {
-                stringBuffer = new java.lang.StringBuffer();
-                line = input.readLine();
-
-                // Byte Order Mark (BOM) - The Unicode Standard, version 3.0, page 324
-                // http://www.unicode.org/faq/utf_bom.html
-
-                // Note that when we use utf-8, the BOM should appear as "EF BB BF", but it doesn't due to this bug in the JDK:
-                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4508058
-                if (line && line.length() && line.charAt(0) === 0xfeff) {
-                    // Eat the BOM, since we've already found the encoding on this file,
-                    // and we plan to concatenating this buffer with others; the BOM should
-                    // only appear at the top of a file.
-                    line = line.substring(1);
-                }
-
-                if (line !== null) {
-                    stringBuffer.append(line);
-                }
-
-                while ((line = input.readLine()) !== null) {
-                    stringBuffer.append(lineSeparator);
-                    stringBuffer.append(line);
-                }
-                //Make sure we return a JavaScript string and not a Java string.
-                content = String(stringBuffer.toString()); //String
-            } finally {
-                input.close();
-            }
-            callback(content);
-        };
-    } else if (masterConfig.env === 'xpconnect' || (!masterConfig.env &&
-            typeof Components !== 'undefined' && Components.classes &&
-            Components.interfaces)) {
-        //Avert your gaze!
-        Cc = Components.classes;
-        Ci = Components.interfaces;
-        Components.utils['import']('resource://gre/modules/FileUtils.jsm');
-        xpcIsWindows = ('@mozilla.org/windows-registry-key;1' in Cc);
-
-        text.get = function (url, callback) {
-            var inStream, convertStream, fileObj,
-                readData = {};
-
-            if (xpcIsWindows) {
-                url = url.replace(/\//g, '\\');
-            }
-
-            fileObj = new FileUtils.File(url);
-
-            //XPCOM, you so crazy
-            try {
-                inStream = Cc['@mozilla.org/network/file-input-stream;1']
-                           .createInstance(Ci.nsIFileInputStream);
-                inStream.init(fileObj, 1, 0, false);
-
-                convertStream = Cc['@mozilla.org/intl/converter-input-stream;1']
-                                .createInstance(Ci.nsIConverterInputStream);
-                convertStream.init(inStream, "utf-8", inStream.available(),
-                Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);
-
-                convertStream.readString(inStream.available(), readData);
-                convertStream.close();
-                inStream.close();
-                callback(readData.value);
-            } catch (e) {
-                throw new Error((fileObj && fileObj.path || '') + ': ' + e);
-            }
-        };
-    }
-    return text;
-});
diff --git a/search/worker.js b/search/worker.js
new file mode 100755
index 0000000..a3ccc07
--- /dev/null
+++ b/search/worker.js
@@ -0,0 +1,128 @@
+var base_path = 'function' === typeof importScripts ? '.' : '/search/';
+var allowSearch = false;
+var index;
+var documents = {};
+var lang = ['en'];
+var data;
+
+function getScript(script, callback) {
+  console.log('Loading script: ' + script);
+  $.getScript(base_path + script).done(function () {
+    callback();
+  }).fail(function (jqxhr, settings, exception) {
+    console.log('Error: ' + exception);
+  });
+}
+
+function getScriptsInOrder(scripts, callback) {
+  if (scripts.length === 0) {
+    callback();
+    return;
+  }
+  getScript(scripts[0], function() {
+    getScriptsInOrder(scripts.slice(1), callback);
+  });
+}
+
+function loadScripts(urls, callback) {
+  if( 'function' === typeof importScripts ) {
+    importScripts.apply(null, urls);
+    callback();
+  } else {
+    getScriptsInOrder(urls, callback);
+  }
+}
+
+function onJSONLoaded () {
+  data = JSON.parse(this.responseText);
+  var scriptsToLoad = ['lunr.js'];
+  if (data.config && data.config.lang && data.config.lang.length) {
+    lang = data.config.lang;
+  }
+  if (lang.length > 1 || lang[0] !== "en") {
+    scriptsToLoad.push('lunr.stemmer.support.js');
+    if (lang.length > 1) {
+      scriptsToLoad.push('lunr.multi.js');
+    }
+    for (var i=0; i < lang.length; i++) {
+      if (lang[i] != 'en') {
+        scriptsToLoad.push(['lunr', lang[i], 'js'].join('.'));
+      }
+    }
+  }
+  loadScripts(scriptsToLoad, onScriptsLoaded);
+}
+
+function onScriptsLoaded () {
+  console.log('All search scripts loaded, building Lunr index...');
+  if (data.config && data.config.separator && data.config.separator.length) {
+    lunr.tokenizer.separator = new RegExp(data.config.separator);
+  }
+  if (data.index) {
+    index = lunr.Index.load(data.index);
+    data.docs.forEach(function (doc) {
+      documents[doc.location] = doc;
+    });
+    console.log('Lunr pre-built index loaded, search ready');
+  } else {
+    index = lunr(function () {
+      if (lang.length === 1 && lang[0] !== "en" && lunr[lang[0]]) {
+        this.use(lunr[lang[0]]);
+      } else if (lang.length > 1) {
+        this.use(lunr.multiLanguage.apply(null, lang));  // spread operator not supported in all browsers: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator#Browser_compatibility
+      }
+      this.field('title');
+      this.field('text');
+      this.ref('location');
+
+      for (var i=0; i < data.docs.length; i++) {
+        var doc = data.docs[i];
+        this.add(doc);
+        documents[doc.location] = doc;
+      }
+    });
+    console.log('Lunr index built, search ready');
+  }
+  allowSearch = true;
+  postMessage({allowSearch: allowSearch});
+}
+
+function init () {
+  var oReq = new XMLHttpRequest();
+  oReq.addEventListener("load", onJSONLoaded);
+  var index_path = base_path + '/search_index.json';
+  if( 'function' === typeof importScripts ){
+      index_path = 'search_index.json';
+  }
+  oReq.open("GET", index_path);
+  oReq.send();
+}
+
+function search (query) {
+  if (!allowSearch) {
+    console.error('Assets for search still loading');
+    return;
+  }
+
+  var resultDocuments = [];
+  var results = index.search(query);
+  for (var i=0; i < results.length; i++){
+    var result = results[i];
+    doc = documents[result.ref];
+    doc.summary = doc.text.substring(0, 200);
+    resultDocuments.push(doc);
+  }
+  return resultDocuments;
+}
+
+if( 'function' === typeof importScripts ) {
+  onmessage = function (e) {
+    if (e.data.init) {
+      init();
+    } else if (e.data.query) {
+      postMessage({ results: search(e.data.query) });
+    } else {
+      console.error("Worker - Unrecognized message: " + e);
+    }
+  };
+}
diff --git a/security/index.html b/security/index.html
index d574594..d4ecd29 100755
--- a/security/index.html
+++ b/security/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Security";
     var mkdocs_page_input_path = "security.md";
-    var mkdocs_page_url = "/security/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -309,9 +310,8 @@ GraphQL::executeQuery(/*...*/);
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/sitemap.xml b/sitemap.xml
index 3ada949..0507746 100755
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -1,146 +1,103 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-
-    
     <url>
-     <loc>/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/getting-started/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/complementary-tools/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
-        
     <url>
-     <loc>/type-system/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/object-types/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/scalar-types/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/enum-types/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/lists-and-nonnulls/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/interfaces/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/unions/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/input-types/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/directives/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/schema/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
     <url>
-     <loc>/type-system/type-language/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-        
-    
-
-    
     <url>
-     <loc>/executing-queries/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/data-fetching/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/error-handling/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/security/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/how-it-works/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
-    
     <url>
-     <loc>/reference/</loc>
-     <lastmod>2018-07-08</lastmod>
+     <loc>None</loc>
+     <lastmod>2018-11-27</lastmod>
      <changefreq>daily</changefreq>
     </url>
-    
-
 </urlset>
\ No newline at end of file
diff --git a/sitemap.xml.gz b/sitemap.xml.gz
new file mode 100755
index 0000000000000000000000000000000000000000..02257f0af6bd629db6bbb427fbf7d6b4f3f9cf43
GIT binary patch
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diff --git a/type-system/directives/index.html b/type-system/directives/index.html
index bc61bf8..633e5ae 100755
--- a/type-system/directives/index.html
+++ b/type-system/directives/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Directives";
     var mkdocs_page_input_path = "type-system\\directives.md";
-    var mkdocs_page_url = "/type-system/directives/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -287,9 +288,8 @@ $trackDirective = new Directive([
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/enum-types/index.html b/type-system/enum-types/index.html
index f6d873d..02b0e2f 100755
--- a/type-system/enum-types/index.html
+++ b/type-system/enum-types/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Enumeration Types";
     var mkdocs_page_input_path = "type-system\\enum-types.md";
-    var mkdocs_page_url = "/type-system/enum-types/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -447,9 +448,8 @@ $heroType = new ObjectType([
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/index.html b/type-system/index.html
index 4e15942..04bd997 100755
--- a/type-system/index.html
+++ b/type-system/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Introduction";
     var mkdocs_page_input_path = "type-system\\index.md";
-    var mkdocs_page_url = "/type-system/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../js/jquery-2.1.1.min.js"></script>
-  <script src="../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../js/highlight.pack.js"></script> 
+  <script src="../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href=".." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -348,9 +349,8 @@ type definitions.</p>
     </span>
 </div>
     <script>var base_url = '..';</script>
-    <script src="../js/theme.js"></script>
-      <script src="../search/require.js"></script>
-      <script src="../search/search.js"></script>
+    <script src="../js/theme.js" defer></script>
+      <script src="../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/input-types/index.html b/type-system/input-types/index.html
index b5ea8c4..e79cdb7 100755
--- a/type-system/input-types/index.html
+++ b/type-system/input-types/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Mutations and Input Types";
     var mkdocs_page_input_path = "type-system\\input-types.md";
-    var mkdocs_page_url = "/type-system/input-types/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -441,9 +442,8 @@ resolver as <code>$args['filters']</code></p>
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/interfaces/index.html b/type-system/interfaces/index.html
index e6f0624..b702a04 100755
--- a/type-system/interfaces/index.html
+++ b/type-system/interfaces/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Interfaces";
     var mkdocs_page_input_path = "type-system\\interfaces.md";
-    var mkdocs_page_url = "/type-system/interfaces/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -395,9 +396,8 @@ than single <strong>resolveType</strong> call. So it is recommended to define <s
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/lists-and-nonnulls/index.html b/type-system/lists-and-nonnulls/index.html
index e74e036..47f8cc6 100755
--- a/type-system/lists-and-nonnulls/index.html
+++ b/type-system/lists-and-nonnulls/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Lists and Non-Null";
     var mkdocs_page_input_path = "type-system\\lists-and-nonnulls.md";
-    var mkdocs_page_url = "/type-system/lists-and-nonnulls/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -288,9 +289,8 @@ nullable parent field which will be set to <strong>null</strong>).</p>
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/object-types/index.html b/type-system/object-types/index.html
index 01587ce..b7dae6b 100755
--- a/type-system/object-types/index.html
+++ b/type-system/object-types/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Object Types";
     var mkdocs_page_input_path = "type-system\\object-types.md";
-    var mkdocs_page_url = "/type-system/object-types/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -536,9 +537,8 @@ public property <strong>$config</strong>. Use it to implement app-level mappings
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/scalar-types/index.html b/type-system/scalar-types/index.html
index 0129225..8ab122d 100755
--- a/type-system/scalar-types/index.html
+++ b/type-system/scalar-types/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Scalar Types";
     var mkdocs_page_input_path = "type-system\\scalar-types.md";
-    var mkdocs_page_url = "/type-system/scalar-types/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -357,9 +358,8 @@ $emailType = new CustomScalarType([
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/schema/index.html b/type-system/schema/index.html
index dbbd96b..498a9bf 100755
--- a/type-system/schema/index.html
+++ b/type-system/schema/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Schema";
     var mkdocs_page_input_path = "type-system\\schema.md";
-    var mkdocs_page_url = "/type-system/schema/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -451,9 +452,8 @@ try {
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/type-language/index.html b/type-system/type-language/index.html
index 4e6ce1a..62eda48 100755
--- a/type-system/type-language/index.html
+++ b/type-system/type-language/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Using Type Language";
     var mkdocs_page_input_path = "type-system\\type-language.md";
-    var mkdocs_page_url = "/type-system/type-language/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -287,9 +288,8 @@ $schema = BuildSchema::build($document, $typeConfigDecorator);
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>
diff --git a/type-system/unions/index.html b/type-system/unions/index.html
index 2a12531..5cf770f 100755
--- a/type-system/unions/index.html
+++ b/type-system/unions/index.html
@@ -13,18 +13,19 @@
 
   <link rel="stylesheet" href="../../css/theme.css" type="text/css" />
   <link rel="stylesheet" href="../../css/theme_extra.css" type="text/css" />
-  <link rel="stylesheet" href="../../css/highlight.css">
+  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
   
   <script>
     // Current page data
     var mkdocs_page_name = "Unions";
     var mkdocs_page_input_path = "type-system\\unions.md";
-    var mkdocs_page_url = "/type-system/unions/";
+    var mkdocs_page_url = null;
   </script>
   
-  <script src="../../js/jquery-2.1.1.min.js"></script>
-  <script src="../../js/modernizr-2.8.3.min.js"></script>
-  <script type="text/javascript" src="../../js/highlight.pack.js"></script> 
+  <script src="../../js/jquery-2.1.1.min.js" defer></script>
+  <script src="../../js/modernizr-2.8.3.min.js" defer></script>
+  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
+  <script>hljs.initHighlightingOnLoad();</script> 
   
 </head>
 
@@ -38,7 +39,7 @@
         <a href="../.." class="icon icon-home"> graphql-php</a>
         <div role="search">
   <form id ="rtd-search-form" class="wy-form" action="../../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" />
+    <input type="text" name="q" placeholder="Search docs" title="Type search term here" />
   </form>
 </div>
       </div>
@@ -291,9 +292,8 @@ $searchResultType = new UnionType([
     </span>
 </div>
     <script>var base_url = '../..';</script>
-    <script src="../../js/theme.js"></script>
-      <script src="../../search/require.js"></script>
-      <script src="../../search/search.js"></script>
+    <script src="../../js/theme.js" defer></script>
+      <script src="../../search/main.js" defer></script>
 
 </body>
 </html>