[DDC-1147] Allowed usage of 0-based input parameters in DQL.

lib/Doctrine/ORM/AbstractQuery.php

@@ -558,10 +558,6 @@ abstract class AbstractQuery
             $this->setParameters($params);
         }
 
-        if (isset($this->_params[0])) {
-            throw QueryException::invalidParameterPosition(0);
-        }
-
         // Check result cache
         if ($this->_useResultCache && $cacheDriver = $this->getResultCacheDriver()) {
             list($key, $hash) = $this->getResultCacheId();
@@ -572,8 +568,8 @@ abstract class AbstractQuery
                 $stmt = $this->_doExecute();
 
                 $result = $this->_em->getHydrator($this->_hydrationMode)->hydrateAll(
-                        $stmt, $this->_resultSetMapping, $this->_hints
+                    $stmt, $this->_resultSetMapping, $this->_hints
-                        );
+                );
 
                 $cacheDriver->save($hash, array($key => $result), $this->_resultCacheTTL);
 

lib/Doctrine/ORM/Query/Lexer.php

@@ -126,7 +126,7 @@ class Lexer extends \Doctrine\Common\Lexer
             '[a-z_\\\][a-z0-9_\:\\\]*[a-z0-9_]{1}',
             '(?:[0-9]+(?:[\.][0-9]+)*)(?:e[+-]?[0-9]+)?',
             "'(?:[^']|'')*'",
-            '\?[1-9][0-9]*|:[a-z]{1}[a-z0-9_]{0,}'
+            '\?[0-9]*|:[a-z]{1}[a-z0-9_]{0,}'
         );
     }
     

lib/Doctrine/ORM/Query/SqlWalker.php

@@ -44,7 +44,7 @@ class SqlWalker implements TreeWalker
     private $_aliasCounter = 0;
     private $_tableAliasCounter = 0;
     private $_scalarResultCounter = 1;
-    private $_sqlParamIndex = 1;
+    private $_sqlParamIndex = 0;
 
     /**
      * @var ParserResult

tests/Doctrine/Tests/ORM/Functional/QueryTest.php

@@ -95,6 +95,23 @@ class QueryTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->assertEquals('Symfony 2', $users[0]->articles[1]->topic);
     }
 
+    public function testUsingZeroBasedQueryParameterShouldWork()
+    {
+        $user = new CmsUser;
+        $user->name = 'Jonathan';
+        $user->username = 'jwage';
+        $user->status = 'developer';
+        $this->_em->persist($user);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $q = $this->_em->createQuery('SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.username = ?0');
+        $q->setParameter(0, 'jwage');
+        $user = $q->getSingleResult();
+        
+        $this->assertNotNull($user);
+    }
+
     public function testUsingUnknownQueryParameterShouldThrowException()
     {
         $this->setExpectedException(

tests/Doctrine/Tests/ORM/Query/QueryTest.php

@@ -13,15 +13,6 @@ class QueryTest extends \Doctrine\Tests\OrmTestCase
         $this->_em = $this->_getTestEntityManager();
     }
 
-    /**
-     * @expectedException Doctrine\ORM\Query\QueryException
-     */
-    public function testParameterIndexZeroThrowsException()
-    {
-        $query = $this->_em->createQuery("select u from Doctrine\Tests\Models\CMS\CmsUser u where u.username = ?1");
-        $query->execute(array(42)); // same as array(0 => 42), 0 is invalid parameter position
-    }
-
     public function testGetParameters()
     {
         $query = $this->_em->createQuery("select u from Doctrine\Tests\Models\CMS\CmsUser u where u.username = ?1");