816 lines
28 KiB
PHP
816 lines
28 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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require_once("Hydrate.php");
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/**
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* Doctrine_Query
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*
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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*/
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class Doctrine_Query extends Doctrine_Hydrate implements Countable {
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/**
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* @param array $subqueryAliases the table aliases needed in some LIMIT subqueries
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*/
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private $subqueryAliases = array();
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/**
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* @param boolean $needsSubquery
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*/
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private $needsSubquery = false;
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/**
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* @param boolean $limitSubqueryUsed
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*/
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private $limitSubqueryUsed = false;
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/**
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* count
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*
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* @return integer
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*/
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public function count(Doctrine_Table $table, $params = array()) {
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$this->remove('select');
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$join = $this->join;
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$where = $this->where;
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$having = $this->having;
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$q = "SELECT COUNT(1) FROM ".$table->getTableName()." ";
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foreach($join as $j) {
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$q .= implode(" ",$j);
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}
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$string = $this->applyInheritance();
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if( ! empty($where)) {
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$q .= " WHERE ".implode(" AND ",$where);
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if( ! empty($string))
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$q .= " AND (".$string.")";
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} else {
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if( ! empty($string))
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$q .= " WHERE (".$string.")";
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}
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if( ! empty($having))
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$q .= " HAVING ".implode(' AND ',$having);
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$a = $this->getConnection()->execute($q, $params)->fetch(PDO::FETCH_NUM);
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return $a[0];
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}
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/**
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* loadFields
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* loads fields for a given table and
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* constructs a little bit of sql for every field
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*
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* fields of the tables become: [tablename].[fieldname] as [tablename]__[fieldname]
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*
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* @access private
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* @param object Doctrine_Table $table a Doctrine_Table object
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* @param integer $fetchmode fetchmode the table is using eg. Doctrine::FETCH_LAZY
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* @param array $names fields to be loaded (only used in lazy property loading)
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* @return void
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*/
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protected function loadFields(Doctrine_Table $table, $fetchmode, array $names, $cpath) {
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$name = $table->getComponentName();
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switch($fetchmode):
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case Doctrine::FETCH_OFFSET:
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$this->limit = $table->getAttribute(Doctrine::ATTR_COLL_LIMIT);
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case Doctrine::FETCH_IMMEDIATE:
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if( ! empty($names))
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$names = array_unique(array_merge($table->getPrimaryKeys(), $names));
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else
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$names = $table->getColumnNames();
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break;
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case Doctrine::FETCH_LAZY_OFFSET:
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$this->limit = $table->getAttribute(Doctrine::ATTR_COLL_LIMIT);
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case Doctrine::FETCH_LAZY:
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case Doctrine::FETCH_BATCH:
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$names = array_unique(array_merge($table->getPrimaryKeys(), $names));
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break;
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default:
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throw new Doctrine_Exception("Unknown fetchmode.");
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endswitch;
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$component = $table->getComponentName();
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$tablename = $this->tableAliases[$cpath];
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$this->fetchModes[$tablename] = $fetchmode;
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$count = count($this->tables);
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foreach($names as $name) {
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if($count == 0) {
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$this->parts["select"][] = $tablename.".".$name;
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} else {
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$this->parts["select"][] = $tablename.".".$name." AS ".$tablename."__".$name;
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}
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}
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}
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/**
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* addFrom
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*
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* @param strint $from
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*/
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public function addFrom($from) {
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$class = "Doctrine_Query_From";
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$parser = new $class($this);
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$parser->parse($from);
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}
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/**
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* addWhere
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*
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* @param string $where
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*/
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public function addWhere($where) {
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$class = "Doctrine_Query_Where";
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$parser = new $class($this);
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$this->parts['where'][] = $parser->parse($where);
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}
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/**
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* sets a query part
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*
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* @param string $name
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* @param array $args
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* @return void
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*/
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public function __call($name, $args) {
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$name = strtolower($name);
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if(isset($this->parts[$name])) {
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$method = "parse".ucwords($name);
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switch($name):
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case "from":
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$this->parts['from'] = array();
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$this->parts['select'] = array();
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$this->parts['join'] = array();
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$this->joins = array();
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$this->tables = array();
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$this->fetchModes = array();
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$this->tableIndexes = array();
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$this->tableAliases = array();
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$class = "Doctrine_Query_".ucwords($name);
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$parser = new $class($this);
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$parser->parse($args[0]);
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break;
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case "where":
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case "having":
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case "orderby":
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case "groupby":
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$class = "Doctrine_Query_".ucwords($name);
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$parser = new $class($this);
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$this->parts[$name] = array($parser->parse($args[0]));
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break;
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case "limit":
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case "offset":
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if($args[0] == null)
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$args[0] = false;
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$this->parts[$name] = $args[0];
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break;
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default:
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$this->parts[$name] = array();
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$this->$method($args[0]);
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endswitch;
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} else
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throw new Doctrine_Query_Exception("Unknown overload method");
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return $this;
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}
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/**
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* returns a query part
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*
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* @param $name query part name
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* @return mixed
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*/
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public function get($name) {
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if( ! isset($this->parts[$name]))
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return false;
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return $this->parts[$name];
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}
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/**
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* sets a query part
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*
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* @param $name query part name
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* @param $value query part value
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* @return boolean
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*/
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public function set($name, $value) {
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if(isset($this->parts[$name])) {
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$method = "parse".ucwords($name);
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switch($name):
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case "where":
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case "having":
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$this->parts[$name] = array($this->$method($value));
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break;
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case "limit":
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case "offset":
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if($value == null)
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$value = false;
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$this->parts[$name] = $value;
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break;
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case "from":
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$this->parts['select'] = array();
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$this->parts['join'] = array();
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$this->joins = array();
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$this->tables = array();
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$this->fetchModes = array();
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$this->tableIndexes = array();
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$this->tableAliases = array();
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default:
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$this->parts[$name] = array();
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$this->$method($value);
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endswitch;
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return true;
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}
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return false;
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}
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/**
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* @return boolean
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*/
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public function isLimitSubqueryUsed() {
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return $this->limitSubqueryUsed;
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}
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/**
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* returns the built sql query
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*
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* @return string
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*/
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public function getQuery() {
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if(empty($this->parts["select"]) || empty($this->parts["from"]))
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return false;
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$needsSubQuery = false;
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$subquery = '';
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$k = array_keys($this->tables);
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$table = $this->tables[$k[0]];
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if( ! empty($this->parts['limit']) && $this->needsSubquery && $table->getAttribute(Doctrine::ATTR_QUERY_LIMIT) == Doctrine::LIMIT_RECORDS) {
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$needsSubQuery = true;
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$this->limitSubqueryUsed = true;
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}
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// build the basic query
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$q = "SELECT ".implode(", ",$this->parts["select"]).
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" FROM ";
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foreach($this->parts["from"] as $tname => $bool) {
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$a[] = $tname;
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}
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$q .= implode(", ",$a);
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if($needsSubQuery)
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$subquery = 'SELECT DISTINCT '.$table->getTableName().".".$table->getIdentifier().
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' FROM '.$table->getTableName();
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if( ! empty($this->parts['join'])) {
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foreach($this->parts['join'] as $part) {
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$q .= " ".implode(' ', $part);
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}
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if($needsSubQuery) {
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foreach($this->parts['join'] as $parts) {
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foreach($parts as $part) {
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if(substr($part,0,9) === 'LEFT JOIN') {
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$e = explode(' ', $part);
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if( ! in_array($e[2],$this->subqueryAliases))
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continue;
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}
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$subquery .= " ".$part;
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}
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}
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}
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}
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$string = $this->applyInheritance();
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if( ! empty($string))
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$this->parts['where'][] = '('.$string.')';
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if($needsSubQuery) {
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// all conditions must be preserved in subquery
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$subquery .= ( ! empty($this->parts['where']))?" WHERE ".implode(" AND ",$this->parts["where"]):'';
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$subquery .= ( ! empty($this->parts['groupby']))?" GROUP BY ".implode(", ",$this->parts["groupby"]):'';
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$subquery .= ( ! empty($this->parts['having']))?" HAVING ".implode(" ",$this->parts["having"]):'';
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}
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$modifyLimit = true;
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if( ! empty($this->parts["limit"]) || ! empty($this->parts["offset"])) {
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if($needsSubQuery) {
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$subquery = $this->connection->modifyLimitQuery($subquery,$this->parts["limit"],$this->parts["offset"]);
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$field = $table->getTableName().'.'.$table->getIdentifier();
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array_unshift($this->parts['where'], $field.' IN ('.$subquery.')');
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$modifyLimit = false;
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}
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}
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$q .= ( ! empty($this->parts['where']))?" WHERE ".implode(" AND ",$this->parts["where"]):'';
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$q .= ( ! empty($this->parts['groupby']))?" GROUP BY ".implode(", ",$this->parts["groupby"]):'';
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$q .= ( ! empty($this->parts['having']))?" HAVING ".implode(" ",$this->parts["having"]):'';
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$q .= ( ! empty($this->parts['orderby']))?" ORDER BY ".implode(" ",$this->parts["orderby"]):'';
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if($modifyLimit)
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$q = $this->connection->modifyLimitQuery($q,$this->parts["limit"],$this->parts["offset"]);
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// return to the previous state
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if( ! empty($string))
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array_pop($this->parts['where']);
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if($needsSubQuery)
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array_shift($this->parts['where']);
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return $q;
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}
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/**
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* query the database with DQL (Doctrine Query Language)
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*
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* @param string $query DQL query
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* @param array $params parameters
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*/
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public function query($query,$params = array()) {
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$this->parseQuery($query);
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if($this->aggregate) {
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$keys = array_keys($this->tables);
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$query = $this->getQuery();
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$stmt = $this->tables[$keys[0]]->getConnection()->select($query,$this->parts["limit"],$this->parts["offset"]);
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$data = $stmt->fetch(PDO::FETCH_ASSOC);
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if(count($data) == 1) {
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return current($data);
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} else {
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return $data;
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}
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} else {
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return $this->execute($params);
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}
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}
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/**
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* DQL PARSER
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* parses a DQL query
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* first splits the query in parts and then uses individual
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* parsers for each part
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*
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* @param string $query DQL query
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* @return void
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*/
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public function parseQuery($query) {
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$this->clear();
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$e = self::sqlExplode($query," ","(",")");
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$parts = array();
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foreach($e as $k=>$part):
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switch(strtolower($part)):
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case "select":
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case "from":
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case "where":
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case "limit":
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case "offset":
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case "having":
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$p = $part;
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$parts[$part] = array();
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break;
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case "order":
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case "group":
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$i = ($k + 1);
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if(isset($e[$i]) && strtolower($e[$i]) === "by") {
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$p = $part;
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$parts[$part] = array();
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} else
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$parts[$p][] = $part;
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break;
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case "by":
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continue;
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default:
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$parts[$p][] = $part;
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endswitch;
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endforeach;
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foreach($parts as $k => $part) {
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$part = implode(" ",$part);
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switch(strtoupper($k)):
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case "SELECT":
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$this->parseSelect($part);
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break;
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case "FROM":
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$class = "Doctrine_Query_".ucwords(strtolower($k));
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$parser = new $class($this);
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$parser->parse($part);
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break;
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case "GROUP":
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case "ORDER":
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$k .= "by";
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case "WHERE":
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case "HAVING":
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$class = "Doctrine_Query_".ucwords(strtolower($k));
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$parser = new $class($this);
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$name = strtolower($k);
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$this->parts[$name][] = $parser->parse($part);
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break;
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case "LIMIT":
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$this->parts["limit"] = trim($part);
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break;
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case "OFFSET":
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$this->parts["offset"] = trim($part);
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break;
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endswitch;
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}
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}
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/**
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* DQL ORDER BY PARSER
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* parses the order by part of the query string
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*
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* @param string $str
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* @return void
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*/
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final public function parseOrderBy($str) {
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$parser = new Doctrine_Query_Part_Orderby($this);
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return $parser->parse($str);
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}
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/**
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* returns Doctrine::FETCH_* constant
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*
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* @param string $mode
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* @return integer
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*/
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final public function parseFetchMode($mode) {
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switch(strtolower($mode)):
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case "i":
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case "immediate":
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$fetchmode = Doctrine::FETCH_IMMEDIATE;
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break;
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case "b":
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case "batch":
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$fetchmode = Doctrine::FETCH_BATCH;
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break;
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case "l":
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case "lazy":
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$fetchmode = Doctrine::FETCH_LAZY;
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break;
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case "o":
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case "offset":
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$fetchmode = Doctrine::FETCH_OFFSET;
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break;
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case "lo":
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case "lazyoffset":
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$fetchmode = Doctrine::FETCH_LAZYOFFSET;
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default:
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throw new Doctrine_Query_Exception("Unknown fetchmode '$mode'. The availible fetchmodes are 'i', 'b' and 'l'.");
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endswitch;
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return $fetchmode;
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}
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/**
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* trims brackets
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*
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* @param string $str
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* @param string $e1 the first bracket, usually '('
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* @param string $e2 the second bracket, usually ')'
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*/
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public static function bracketTrim($str,$e1,$e2) {
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if(substr($str,0,1) == $e1 && substr($str,-1) == $e2)
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return substr($str,1,-1);
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else
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return $str;
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}
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/**
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* bracketExplode
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* usage:
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* $str = (age < 20 AND age > 18) AND email LIKE 'John@example.com'
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* now exploding $str with parameters $d = ' AND ', $e1 = '(' and $e2 = ')'
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* would return an array:
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* array("(age < 20 AND age > 18)", "email LIKE 'John@example.com'")
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*
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* @param string $str
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* @param string $d the delimeter which explodes the string
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* @param string $e1 the first bracket, usually '('
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* @param string $e2 the second bracket, usually ')'
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*
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*/
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public static function bracketExplode($str,$d,$e1 = '(',$e2 = ')') {
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$str = explode("$d",$str);
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$i = 0;
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$term = array();
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foreach($str as $key=>$val) {
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if (empty($term[$i])) {
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$term[$i] = trim($val);
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$s1 = substr_count($term[$i],"$e1");
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$s2 = substr_count($term[$i],"$e2");
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if($s1 == $s2) $i++;
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} else {
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$term[$i] .= "$d".trim($val);
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$c1 = substr_count($term[$i],"$e1");
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$c2 = substr_count($term[$i],"$e2");
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if($c1 == $c2) $i++;
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}
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}
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return $term;
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}
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/**
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* sqlExplode
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*
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* explodes a string into array using custom brackets and
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* quote delimeters
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*
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||
* @param string $str
|
||
* @param string $d the delimeter which explodes the string
|
||
* @param string $e1 the first bracket, usually '('
|
||
* @param string $e2 the second bracket, usually ')'
|
||
*
|
||
* @return array
|
||
*/
|
||
public static function sqlExplode($str,$d = " ",$e1 = '(',$e2 = ')') {
|
||
$str = explode("$d",$str);
|
||
$i = 0;
|
||
$term = array();
|
||
foreach($str as $key => $val) {
|
||
if (empty($term[$i])) {
|
||
$term[$i] = trim($val);
|
||
|
||
$s1 = substr_count($term[$i],"$e1");
|
||
$s2 = substr_count($term[$i],"$e2");
|
||
|
||
if(substr($term[$i],0,1) == "(") {
|
||
if($s1 == $s2)
|
||
$i++;
|
||
} else {
|
||
if( ! (substr_count($term[$i], "'") & 1) &&
|
||
! (substr_count($term[$i], "\"") & 1) &&
|
||
! (substr_count($term[$i], "<EFBFBD>") & 1)
|
||
) $i++;
|
||
}
|
||
} else {
|
||
$term[$i] .= "$d".trim($val);
|
||
$c1 = substr_count($term[$i],"$e1");
|
||
$c2 = substr_count($term[$i],"$e2");
|
||
|
||
if(substr($term[$i],0,1) == "(") {
|
||
if($c1 == $c2)
|
||
$i++;
|
||
} else {
|
||
if( ! (substr_count($term[$i], "'") & 1) &&
|
||
! (substr_count($term[$i], "\"") & 1) &&
|
||
! (substr_count($term[$i], "<EFBFBD>") & 1)
|
||
) $i++;
|
||
}
|
||
}
|
||
}
|
||
return $term;
|
||
}
|
||
|
||
/**
|
||
* generateAlias
|
||
*
|
||
* @param string $tableName
|
||
* @return string
|
||
*/
|
||
final public function generateAlias($tableName) {
|
||
if(isset($this->tableIndexes[$tableName])) {
|
||
return $tableName.++$this->tableIndexes[$tableName];
|
||
} else {
|
||
$this->tableIndexes[$tableName] = 1;
|
||
return $tableName;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* loads a component
|
||
*
|
||
* @param string $path the path of the loadable component
|
||
* @param integer $fetchmode optional fetchmode, if not set the components default fetchmode will be used
|
||
* @throws Doctrine_Query_Exception
|
||
* @return Doctrine_Table
|
||
*/
|
||
final public function load($path, $loadFields = true) {
|
||
$e = preg_split("/[.:]/",$path);
|
||
$index = 0;
|
||
$currPath = '';
|
||
|
||
foreach($e as $key => $fullname) {
|
||
try {
|
||
$copy = $e;
|
||
|
||
$e2 = preg_split("/[-(]/",$fullname);
|
||
$name = $e2[0];
|
||
|
||
$currPath .= ".".$name;
|
||
|
||
if($key == 0) {
|
||
$currPath = substr($currPath,1);
|
||
|
||
$table = $this->connection->getTable($name);
|
||
|
||
$tname = $table->getTableName();
|
||
|
||
if( ! isset($this->tableAliases[$currPath]))
|
||
$this->tableIndexes[$tname] = 1;
|
||
|
||
$this->parts["from"][$tname] = true;
|
||
|
||
$this->tableAliases[$currPath] = $tname;
|
||
|
||
$tableName = $tname;
|
||
} else {
|
||
|
||
$index += strlen($e[($key - 1)]) + 1;
|
||
// the mark here is either '.' or ':'
|
||
$mark = substr($path,($index - 1),1);
|
||
|
||
if(isset($this->tableAliases[$prevPath])) {
|
||
$tname = $this->tableAliases[$prevPath];
|
||
} else
|
||
$tname = $table->getTableName();
|
||
|
||
|
||
$fk = $table->getRelation($name);
|
||
$name = $fk->getTable()->getComponentName();
|
||
$original = $fk->getTable()->getTableName();
|
||
|
||
|
||
|
||
if(isset($this->tableAliases[$currPath])) {
|
||
$tname2 = $this->tableAliases[$currPath];
|
||
} else
|
||
$tname2 = $this->generateAlias($original);
|
||
|
||
if($original !== $tname2)
|
||
$aliasString = $original." AS ".$tname2;
|
||
else
|
||
$aliasString = $original;
|
||
|
||
switch($mark):
|
||
case ":":
|
||
$join = 'INNER JOIN ';
|
||
break;
|
||
case ".":
|
||
$join = 'LEFT JOIN ';
|
||
break;
|
||
default:
|
||
throw new Doctrine_Exception("Unknown operator '$mark'");
|
||
endswitch;
|
||
|
||
if($fk->getType() == Doctrine_Relation::MANY_AGGREGATE ||
|
||
$fk->getType() == Doctrine_Relation::MANY_COMPOSITE) {
|
||
if( ! $loadFields) {
|
||
$this->subqueryAliases[] = $tname2;
|
||
}
|
||
|
||
$this->needsSubquery = true;
|
||
}
|
||
|
||
if($fk instanceof Doctrine_ForeignKey ||
|
||
$fk instanceof Doctrine_LocalKey) {
|
||
|
||
$this->parts["join"][$tname][$tname2] = $join.$aliasString." ON ".$tname.".".$fk->getLocal()." = ".$tname2.".".$fk->getForeign();
|
||
|
||
} elseif($fk instanceof Doctrine_Association) {
|
||
$asf = $fk->getAssociationFactory();
|
||
|
||
$assocTableName = $asf->getTableName();
|
||
|
||
if( ! $loadFields) {
|
||
$this->subqueryAliases[] = $assocTableName;
|
||
}
|
||
$this->parts["join"][$tname][$assocTableName] = $join.$assocTableName." ON ".$tname.".id = ".$assocTableName.".".$fk->getLocal();
|
||
$this->parts["join"][$tname][$tname2] = $join.$aliasString." ON ".$tname2.".id = ".$assocTableName.".".$fk->getForeign();
|
||
}
|
||
|
||
$this->joins[$tname2] = $prevTable;
|
||
|
||
|
||
$table = $fk->getTable();
|
||
$this->tableAliases[$currPath] = $tname2;
|
||
|
||
$tableName = $tname2;
|
||
}
|
||
|
||
if( ! isset($this->tables[$tableName])) {
|
||
$this->tables[$tableName] = $table;
|
||
|
||
if($loadFields) {
|
||
$this->parseFields($fullname, $tableName, $e2, $currPath);
|
||
}
|
||
}
|
||
|
||
|
||
$prevPath = $currPath;
|
||
$prevTable = $tableName;
|
||
} catch(Exception $e) {
|
||
throw new Doctrine_Query_Exception($e->__toString());
|
||
}
|
||
}
|
||
return $table;
|
||
}
|
||
/**
|
||
* parseFields
|
||
*
|
||
* @param string $fullName
|
||
* @param string $tableName
|
||
* @param array $exploded
|
||
* @param string $currPath
|
||
* @return void
|
||
*/
|
||
final public function parseFields($fullName, $tableName, array $exploded, $currPath) {
|
||
$table = $this->tables[$tableName];
|
||
|
||
$fields = array();
|
||
|
||
if(strpos($fullName, "-") === false) {
|
||
$fetchmode = $table->getAttribute(Doctrine::ATTR_FETCHMODE);
|
||
|
||
if(isset($exploded[1])) {
|
||
if(count($exploded) > 2) {
|
||
$fields = $this->parseAggregateValues($fullName, $tableName, $exploded, $currPath);
|
||
} elseif(count($exploded) == 2) {
|
||
$fields = explode(",",substr($exploded[1],0,-1));
|
||
}
|
||
}
|
||
} else {
|
||
if(isset($exploded[1])) {
|
||
$fetchmode = $this->parseFetchMode($exploded[1]);
|
||
} else
|
||
$fetchmode = $table->getAttribute(Doctrine::ATTR_FETCHMODE);
|
||
|
||
if(isset($exploded[2])) {
|
||
if(substr_count($exploded[2], ")") > 1) {
|
||
|
||
} else {
|
||
$fields = explode(",",substr($exploded[2],0,-1));
|
||
}
|
||
}
|
||
|
||
}
|
||
if( ! $this->aggregate)
|
||
$this->loadFields($table, $fetchmode, $fields, $currPath);
|
||
}
|
||
public function parseAggregateFunction($func,$reference) {
|
||
$pos = strpos($func,"(");
|
||
|
||
if($pos !== false) {
|
||
$funcs = array();
|
||
|
||
$name = substr($func, 0, $pos);
|
||
$func = substr($func, ($pos + 1), -1);
|
||
$params = Doctrine_Query::bracketExplode($func, ",", "(", ")");
|
||
|
||
foreach($params as $k => $param) {
|
||
$params[$k] = $this->parseAggregateFunction($param,$reference);
|
||
}
|
||
|
||
$funcs = $name."(".implode(", ", $params).")";
|
||
|
||
return $funcs;
|
||
|
||
} else {
|
||
if( ! is_numeric($func)) {
|
||
|
||
$func = $this->getTableAlias($reference).".".$func;
|
||
|
||
return $func;
|
||
} else {
|
||
return $func;
|
||
}
|
||
}
|
||
}
|
||
final public function parseAggregateValues($fullName, $tableName, array $exploded, $currPath) {
|
||
$this->aggregate = true;
|
||
$pos = strpos($fullName,"(");
|
||
$name = substr($fullName, 0, $pos);
|
||
$string = substr($fullName, ($pos + 1), -1);
|
||
|
||
$exploded = Doctrine_Query::bracketExplode($string, ',');
|
||
foreach($exploded as $k => $value) {
|
||
$exploded[$k] = $this->parseAggregateFunction($value, $currPath);
|
||
$this->parts["select"][] = $exploded[$k];
|
||
}
|
||
}
|
||
}
|
||
?>
|