1113 lines
38 KiB
PHP
1113 lines
38 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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Doctrine::autoload('Doctrine_Query_Abstract');
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/**
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* Doctrine_Query
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*
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* @package Doctrine
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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* @version $Revision$
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Query extends Doctrine_Query_Abstract implements Countable
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{
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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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protected $subqueryAliases = array();
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/**
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* @param boolean $needsSubquery
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*/
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protected $needsSubquery = false;
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protected $_status = array('needsSubquery' => true);
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/**
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* @param boolean $isSubquery whether or not this query object is a subquery of another
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* query object
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*/
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protected $isSubquery;
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protected $neededTables = array();
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/**
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* @var array $pendingFields
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*/
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protected $pendingFields = array();
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/**
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* @var array $pendingSubqueries SELECT part subqueries, these are called pending subqueries since
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* they cannot be parsed directly (some queries might be correlated)
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*/
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protected $pendingSubqueries = array();
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/**
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* @var array $_parsers an array of parser objects
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*/
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protected $_parsers = array();
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/**
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* @var array $_enumParams an array containing the keys of the parameters that should be enumerated
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*/
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protected $_enumParams = array();
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/**
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* @var array $_dqlParts an array containing all DQL query parts
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*/
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protected $_dqlParts = array(
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'select' => array(),
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'distinct' => false,
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'forUpdate' => false,
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'from' => array(),
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'set' => array(),
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'join' => array(),
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'where' => array(),
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'groupby' => array(),
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'having' => array(),
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'orderby' => array(),
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'limit' => false,
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'offset' => false,
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);
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/**
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* create
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* returns a new Doctrine_Query object
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*
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* @return Doctrine_Query
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*/
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public static function create()
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{
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return new Doctrine_Query();
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}
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/**
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* addEnumParam
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* sets input parameter as an enumerated parameter
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*
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* @param string $key the key of the input parameter
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* @return Doctrine_Query
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*/
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public function addEnumParam($key, $table = null, $column = null)
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{
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$array = (isset($table) || isset($column)) ? array($table, $column) : array();
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if ($key === '?') {
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$this->_enumParams[] = $array;
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} else {
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$this->_enumParams[$key] = $array;
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}
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}
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/**
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* getEnumParams
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* get all enumerated parameters
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*
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* @return array all enumerated parameters
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*/
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public function getEnumParams()
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{
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return $this->_enumParams;
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}
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/**
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* convertEnums
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* convert enum parameters to their integer equivalents
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*
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* @return array converted parameter array
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*/
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public function convertEnums($params)
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{
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foreach ($this->_enumParams as $key => $values) {
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if (isset($params[$key])) {
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if ( ! empty($values)) {
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$params[$key] = $values[0]->enumIndex($values[1], $params[$key]);
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}
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}
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}
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return $params;
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}
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/**
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* isSubquery
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* if $bool parameter is set this method sets the value of
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* Doctrine_Query::$isSubquery. If this value is set to true
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* the query object will not load the primary key fields of the selected
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* components.
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*
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* If null is given as the first parameter this method retrieves the current
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* value of Doctrine_Query::$isSubquery.
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*
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* @param boolean $bool whether or not this query acts as a subquery
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* @return Doctrine_Query|bool
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*/
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public function isSubquery($bool = null)
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{
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if ($bool === null) {
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return $this->isSubquery;
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}
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$this->isSubquery = (bool) $bool;
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return $this;
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}
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/**
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* getAggregateAlias
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*
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* @return string
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*/
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public function getAggregateAlias($dqlAlias)
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{
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if(isset($this->aggregateMap[$dqlAlias])) {
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return $this->aggregateMap[$dqlAlias];
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}
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return null;
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}
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/**
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* getParser
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* parser lazy-loader
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*
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* @throws Doctrine_Query_Exception if unknown parser name given
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* @return Doctrine_Query_Part
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*/
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public function getParser($name)
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{
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if ( ! isset($this->_parsers[$name])) {
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$class = 'Doctrine_Query_' . ucwords(strtolower($name));
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Doctrine::autoload($class);
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if ( ! class_exists($class)) {
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throw new Doctrine_Query_Exception('Unknown parser ' . $name);
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}
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$this->_parsers[$name] = new $class($this);
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}
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return $this->_parsers[$name];
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}
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/**
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* parseQueryPart
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* parses given DQL query part
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*
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* @param string $queryPartName the name of the query part
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* @param string $queryPart query part to be parsed
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* @param boolean $append whether or not to append the query part to its stack
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* if false is given, this method will overwrite
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* the given query part stack with $queryPart
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* @return Doctrine_Query this object
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*/
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public function parseQueryPart($queryPartName, $queryPart, $append = false)
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{
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if ($append) {
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$this->_dqlParts[$queryPartName][] = $queryPart;
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} else {
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$this->_dqlParts[$queryPartName] = $queryPart;
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}
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return $this->getParser($queryPartName)->parse($queryPart);
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}
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/**
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* getDql
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* returns the DQL query associated with this object
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*
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* the query is built from $_dqlParts
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*
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* @return string the DQL query
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*/
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public function getDql()
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{
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$q = '';
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$q .= ( ! empty($this->parts['select']))? 'SELECT ' . implode(', ', $this->parts['select']) : '';
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$q .= ( ! empty($this->parts['from']))? ' FROM ' . implode(' ', $this->parts['from']) : '';
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$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(' AND ', $this->parts['having']) : '';
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$q .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : '';
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$q .= ( ! empty($this->parts['limit']))? ' LIMIT ' . implode(' ', $this->parts['limit']) : '';
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$q .= ( ! empty($this->parts['offset']))? ' OFFSET ' . implode(' ', $this->parts['offset']) : '';
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return $q;
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}
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/**
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* processPendingFields
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* the fields in SELECT clause cannot be parsed until the components
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* in FROM clause are parsed, hence this method is called everytime a
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* specific component is being parsed.
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*
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* @throws Doctrine_Query_Exception if unknown component alias has been given
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* @param string $componentAlias the alias of the component
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* @return void
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*/
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public function processPendingFields($componentAlias)
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{
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$tableAlias = $this->getTableAlias($componentAlias);
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$table = $this->_aliasMap[$componentAlias]['table'];
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if (isset($this->pendingFields[$componentAlias])) {
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$fields = $this->pendingFields[$componentAlias];
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// check for wildcards
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if (in_array('*', $fields)) {
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$fields = $table->getColumnNames();
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} else {
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// only auto-add the primary key fields if this query object is not
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// a subquery of another query object
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if ( ! $this->isSubquery) {
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$fields = array_unique(array_merge($table->getPrimaryKeys(), $fields));
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}
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}
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}
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foreach ($fields as $name) {
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$name = $table->getColumnName($name);
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$this->parts['select'][] = $tableAlias . '.' .$name . ' AS ' . $tableAlias . '__' . $name;
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}
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$this->neededTables[] = $tableAlias;
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}
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/**
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* parseSelect
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* parses the query select part and
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* adds selected fields to pendingFields array
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*
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* @param string $dql
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*/
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public function parseSelect($dql)
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{
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$refs = Doctrine_Tokenizer::bracketExplode($dql, ',');
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foreach ($refs as $reference) {
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if (strpos($reference, '(') !== false) {
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if (substr($reference, 0, 1) === '(') {
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// subselect found in SELECT part
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$this->parseSubselect($reference);
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} else {
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$this->parseAggregateFunction2($reference);
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}
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} else {
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$e = explode('.', $reference);
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if (count($e) > 2) {
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$this->pendingFields[] = $reference;
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} else {
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$this->pendingFields[$e[0]][] = $e[1];
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}
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}
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}
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}
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/**
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* parseSubselect
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*
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* parses the subquery found in DQL SELECT part and adds the
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* parsed form into $pendingSubqueries stack
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*
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* @param string $reference
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* @return void
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*/
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public function parseSubselect($reference)
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{
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$e = Doctrine_Tokenizer::bracketExplode($reference, ' ');
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$alias = $e[1];
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if (count($e) > 2) {
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if (strtoupper($e[1]) !== 'AS') {
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throw new Doctrine_Query_Exception('Syntax error near: ' . $reference);
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}
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$alias = $e[2];
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}
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$subquery = substr($e[0], 1, -1);
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$this->pendingSubqueries[] = array($subquery, $alias);
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}
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public function parseAggregateFunction2($func)
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{
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$e = Doctrine_Tokenizer::bracketExplode($func, ' ');
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$func = $e[0];
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$pos = strpos($func, '(');
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$name = substr($func, 0, $pos);
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try {
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$argStr = substr($func, ($pos + 1), -1);
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$args = explode(',', $argStr);
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$func = call_user_func_array(array($this->conn->expression, $name), $args);
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if(substr($func, 0, 1) !== '(') {
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$pos = strpos($func, '(');
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$name = substr($func, 0, $pos);
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} else {
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$name = $func;
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}
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$e2 = explode(' ', $args[0]);
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$distinct = '';
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if (count($e2) > 1) {
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if (strtoupper($e2[0]) == 'DISTINCT') {
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$distinct = 'DISTINCT ';
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}
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$args[0] = $e2[1];
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}
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$parts = explode('.', $args[0]);
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$owner = $parts[0];
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$alias = (isset($e[1])) ? $e[1] : $name;
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$e3 = explode('.', $alias);
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if (count($e3) > 1) {
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$alias = $e3[1];
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$owner = $e3[0];
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}
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// a function without parameters eg. RANDOM()
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if ($owner === '') {
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$owner = 0;
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}
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$this->pendingAggregates[$owner][] = array($name, $args, $distinct, $alias);
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} catch(Doctrine_Expression_Exception $e) {
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throw new Doctrine_Query_Exception('Unknown function ' . $func . '.');
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}
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}
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public function processPendingSubqueries()
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{
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foreach ($this->pendingSubqueries as $value) {
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list($dql, $alias) = $value;
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$sql = $this->createSubquery()->parseQuery($dql, false)->getQuery();
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reset($this->_aliasMap);
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$componentAlias = key($this->_aliasMap);
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$tableAlias = $this->getTableAlias($componentAlias);
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$sqlAlias = $tableAlias . '__' . count($this->aggregateMap);
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$this->parts['select'][] = '(' . $sql . ') AS ' . $sqlAlias;
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$this->aggregateMap[$alias] = $sqlAlias;
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$this->subqueryAggregates[$componentAlias][] = $alias;
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}
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$this->pendingSubqueries = array();
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}
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public function processPendingAggregates($componentAlias)
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{
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$tableAlias = $this->getTableAlias($componentAlias);
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$map = reset($this->_aliasMap);
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$root = $map['table'];
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$table = $this->_aliasMap[$componentAlias]['table'];
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$aggregates = array();
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if(isset($this->pendingAggregates[$componentAlias])) {
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$aggregates = $this->pendingAggregates[$componentAlias];
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}
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if ($root === $table) {
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if (isset($this->pendingAggregates[0])) {
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$aggregates += $this->pendingAggregates[0];
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}
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}
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foreach($aggregates as $parts) {
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list($name, $args, $distinct, $alias) = $parts;
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$arglist = array();
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foreach($args as $arg) {
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$e = explode('.', $arg);
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if (is_numeric($arg)) {
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$arglist[] = $arg;
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} elseif (count($e) > 1) {
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$map = $this->_aliasMap[$e[0]];
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$table = $map['table'];
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$e[1] = $table->getColumnName($e[1]);
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if ( ! $table->hasColumn($e[1])) {
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throw new Doctrine_Query_Exception('Unknown column ' . $e[1]);
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}
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$arglist[] = $tableAlias . '.' . $e[1];
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} else {
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$arglist[] = $e[0];
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}
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}
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$sqlAlias = $tableAlias . '__' . count($this->aggregateMap);
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if (substr($name, 0, 1) !== '(') {
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$this->parts['select'][] = $name . '(' . $distinct . implode(', ', $arglist) . ') AS ' . $sqlAlias;
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} else {
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$this->parts['select'][] = $name . ' AS ' . $sqlAlias;
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}
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$this->aggregateMap[$alias] = $sqlAlias;
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$this->neededTables[] = $tableAlias;
|
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}
|
|
}
|
|
/**
|
|
* getQueryBase
|
|
* returns the base of the generated sql query
|
|
* On mysql driver special strategy has to be used for DELETE statements
|
|
*
|
|
* @return string the base of the generated sql query
|
|
*/
|
|
public function getQueryBase()
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|
{
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|
switch ($this->type) {
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case self::DELETE:
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$q = 'DELETE FROM ';
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break;
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case self::UPDATE:
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$q = 'UPDATE ';
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break;
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case self::SELECT:
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$distinct = ($this->isDistinct()) ? 'DISTINCT ' : '';
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$q = 'SELECT ' . $distinct . implode(', ', $this->parts['select']) . ' FROM ';
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break;
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}
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return $q;
|
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}
|
|
/**
|
|
* buildFromPart
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|
*
|
|
* @return string
|
|
*/
|
|
public function buildFromPart()
|
|
{
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$q = '';
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foreach ($this->parts['from'] as $k => $part) {
|
|
if ($k === 0) {
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$q .= $part;
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continue;
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}
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|
// preserve LEFT JOINs only if needed
|
|
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|
if (substr($part, 0, 9) === 'LEFT JOIN') {
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$e = explode(' ', $part);
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$aliases = array_merge($this->subqueryAliases,
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array_keys($this->neededTables));
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if( ! in_array($e[3], $aliases) &&
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! in_array($e[2], $aliases) &&
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! empty($this->pendingFields)) {
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continue;
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}
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|
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}
|
|
|
|
$e = explode(' ON ', $part);
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|
// we can always be sure that the first join condition exists
|
|
$e2 = explode(' AND ', $e[1]);
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|
$part = $e[0] . ' ON ' . array_shift($e2);
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|
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if ( ! empty($e2)) {
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$parser = new Doctrine_Query_JoinCondition($this);
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$part .= ' AND ' . $parser->_parse(implode(' AND ', $e2));
|
|
}
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|
$q .= ' ' . $part;
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|
}
|
|
return $q;
|
|
}
|
|
/**
|
|
* builds the sql query from the given parameters and applies things such as
|
|
* column aggregation inheritance and limit subqueries if needed
|
|
*
|
|
* @param array $params an array of prepared statement params (needed only in mysql driver
|
|
* when limit subquery algorithm is used)
|
|
* @return string the built sql query
|
|
*/
|
|
public function getQuery($params = array())
|
|
{
|
|
if (empty($this->parts['select']) || empty($this->parts['from'])) {
|
|
return false;
|
|
}
|
|
|
|
$needsSubQuery = false;
|
|
$subquery = '';
|
|
$map = reset($this->_aliasMap);
|
|
$table = $map['table'];
|
|
$rootAlias = key($this->_aliasMap);
|
|
|
|
if ( ! empty($this->parts['limit']) && $this->needsSubquery && $table->getAttribute(Doctrine::ATTR_QUERY_LIMIT) == Doctrine::LIMIT_RECORDS) {
|
|
$needsSubQuery = true;
|
|
}
|
|
|
|
// process all pending SELECT part subqueries
|
|
$this->processPendingSubqueries();
|
|
|
|
// build the basic query
|
|
|
|
$str = '';
|
|
if ($this->isDistinct()) {
|
|
$str = 'DISTINCT ';
|
|
}
|
|
|
|
$q = $this->getQueryBase();
|
|
$q .= $this->buildFromPart();
|
|
|
|
if ( ! empty($this->parts['set'])) {
|
|
$q .= ' SET ' . implode(', ', $this->parts['set']);
|
|
}
|
|
|
|
$string = $this->applyInheritance();
|
|
|
|
if ( ! empty($string)) {
|
|
$this->parts['where'][] = '(' . $string . ')';
|
|
}
|
|
|
|
|
|
$modifyLimit = true;
|
|
if ( ! empty($this->parts["limit"]) || ! empty($this->parts["offset"])) {
|
|
|
|
if ($needsSubQuery) {
|
|
$subquery = $this->getLimitSubquery();
|
|
|
|
|
|
switch (strtolower($this->conn->getName())) {
|
|
case 'mysql':
|
|
// mysql doesn't support LIMIT in subqueries
|
|
$list = $this->conn->execute($subquery, $params)->fetchAll(PDO::FETCH_COLUMN);
|
|
$subquery = implode(', ', $list);
|
|
break;
|
|
case 'pgsql':
|
|
// pgsql needs special nested LIMIT subquery
|
|
$subquery = 'SELECT doctrine_subquery_alias.' . $table->getIdentifier(). ' FROM (' . $subquery . ') AS doctrine_subquery_alias';
|
|
break;
|
|
}
|
|
|
|
$field = $this->aliasHandler->getShortAlias($rootAlias) . '.' . $table->getIdentifier();
|
|
|
|
// only append the subquery if it actually contains something
|
|
if ($subquery !== '') {
|
|
array_unshift($this->parts['where'], $field. ' IN (' . $subquery . ')');
|
|
}
|
|
|
|
$modifyLimit = false;
|
|
}
|
|
}
|
|
|
|
$q .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']) : '';
|
|
$q .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']) : '';
|
|
$q .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']): '';
|
|
$q .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : '';
|
|
|
|
if ($modifyLimit) {
|
|
$q = $this->conn->modifyLimitQuery($q, $this->parts['limit'], $this->parts['offset']);
|
|
}
|
|
|
|
// return to the previous state
|
|
if ( ! empty($string)) {
|
|
array_pop($this->parts['where']);
|
|
}
|
|
if ($needsSubQuery) {
|
|
array_shift($this->parts['where']);
|
|
}
|
|
return $q;
|
|
}
|
|
/**
|
|
* getLimitSubquery
|
|
* this is method is used by the record limit algorithm
|
|
*
|
|
* when fetching one-to-many, many-to-many associated data with LIMIT clause
|
|
* an additional subquery is needed for limiting the number of returned records instead
|
|
* of limiting the number of sql result set rows
|
|
*
|
|
* @return string the limit subquery
|
|
*/
|
|
public function getLimitSubquery()
|
|
{
|
|
$map = reset($this->_aliasMap);
|
|
$table = $map['table'];
|
|
$componentAlias = key($this->_aliasMap);
|
|
|
|
// get short alias
|
|
$alias = $this->aliasHandler->getShortAlias($componentAlias);
|
|
$primaryKey = $alias . '.' . $table->getIdentifier();
|
|
|
|
// initialize the base of the subquery
|
|
$subquery = 'SELECT DISTINCT ' . $primaryKey;
|
|
|
|
if ($this->conn->getDBH()->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
|
|
// pgsql needs the order by fields to be preserved in select clause
|
|
|
|
foreach ($this->parts['orderby'] as $part) {
|
|
$e = explode(' ', $part);
|
|
|
|
// don't add primarykey column (its already in the select clause)
|
|
if ($e[0] !== $primaryKey) {
|
|
$subquery .= ', ' . $e[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
$subquery .= ' FROM';
|
|
|
|
foreach ($this->parts['from'] as $part) {
|
|
// preserve LEFT JOINs only if needed
|
|
if (substr($part,0,9) === 'LEFT JOIN') {
|
|
$e = explode(' ', $part);
|
|
|
|
if ( ! in_array($e[3], $this->subqueryAliases) &&
|
|
! in_array($e[2], $this->subqueryAliases)) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
$subquery .= ' ' . $part;
|
|
}
|
|
|
|
// all conditions must be preserved in subquery
|
|
$subquery .= ( ! empty($this->parts['where']))? ' WHERE ' . implode(' AND ', $this->parts['where']) : '';
|
|
$subquery .= ( ! empty($this->parts['groupby']))? ' GROUP BY ' . implode(', ', $this->parts['groupby']) : '';
|
|
$subquery .= ( ! empty($this->parts['having']))? ' HAVING ' . implode(' AND ', $this->parts['having']) : '';
|
|
$subquery .= ( ! empty($this->parts['orderby']))? ' ORDER BY ' . implode(', ', $this->parts['orderby']) : '';
|
|
|
|
// add driver specific limit clause
|
|
$subquery = $this->conn->modifyLimitQuery($subquery, $this->parts['limit'], $this->parts['offset']);
|
|
|
|
$parts = Doctrine_Tokenizer::quoteExplode($subquery, ' ', "'", "'");
|
|
|
|
foreach($parts as $k => $part) {
|
|
if(strpos($part, "'") !== false) {
|
|
continue;
|
|
}
|
|
|
|
if($this->aliasHandler->hasAliasFor($part)) {
|
|
$parts[$k] = $this->aliasHandler->generateNewAlias($part);
|
|
}
|
|
|
|
if(strpos($part, '.') !== false) {
|
|
$e = explode('.', $part);
|
|
|
|
$trimmed = ltrim($e[0], '( ');
|
|
$pos = strpos($e[0], $trimmed);
|
|
|
|
$e[0] = substr($e[0], 0, $pos) . $this->aliasHandler->generateNewAlias($trimmed);
|
|
$parts[$k] = implode('.', $e);
|
|
}
|
|
}
|
|
$subquery = implode(' ', $parts);
|
|
|
|
return $subquery;
|
|
}
|
|
/**
|
|
* tokenizeQuery
|
|
* splits the given dql query into an array where keys
|
|
* represent different query part names and values are
|
|
* arrays splitted using sqlExplode method
|
|
*
|
|
* example:
|
|
*
|
|
* parameter:
|
|
* $query = "SELECT u.* FROM User u WHERE u.name LIKE ?"
|
|
* returns:
|
|
* array('select' => array('u.*'),
|
|
* 'from' => array('User', 'u'),
|
|
* 'where' => array('u.name', 'LIKE', '?'))
|
|
*
|
|
* @param string $query DQL query
|
|
* @throws Doctrine_Query_Exception if some generic parsing error occurs
|
|
* @return array an array containing the query string parts
|
|
*/
|
|
public function tokenizeQuery($query)
|
|
{
|
|
$e = Doctrine_Tokenizer::sqlExplode($query, ' ');
|
|
|
|
foreach($e as $k=>$part) {
|
|
$part = trim($part);
|
|
switch(strtolower($part)) {
|
|
case 'delete':
|
|
case 'update':
|
|
case 'select':
|
|
case 'set':
|
|
case 'from':
|
|
case 'where':
|
|
case 'limit':
|
|
case 'offset':
|
|
case 'having':
|
|
$p = $part;
|
|
$parts[$part] = array();
|
|
break;
|
|
case 'order':
|
|
case 'group':
|
|
$i = ($k + 1);
|
|
if(isset($e[$i]) && strtolower($e[$i]) === "by") {
|
|
$p = $part;
|
|
$parts[$part] = array();
|
|
} else
|
|
$parts[$p][] = $part;
|
|
break;
|
|
case "by":
|
|
continue;
|
|
default:
|
|
if( ! isset($p))
|
|
throw new Doctrine_Query_Exception("Couldn't parse query.");
|
|
|
|
$parts[$p][] = $part;
|
|
}
|
|
}
|
|
return $parts;
|
|
}
|
|
/**
|
|
* DQL PARSER
|
|
* parses a DQL query
|
|
* first splits the query in parts and then uses individual
|
|
* parsers for each part
|
|
*
|
|
* @param string $query DQL query
|
|
* @param boolean $clear whether or not to clear the aliases
|
|
* @throws Doctrine_Query_Exception if some generic parsing error occurs
|
|
* @return Doctrine_Query
|
|
*/
|
|
public function parseQuery($query, $clear = true)
|
|
{
|
|
if ($clear) {
|
|
$this->clear();
|
|
}
|
|
|
|
$query = trim($query);
|
|
$query = str_replace("\n", ' ', $query);
|
|
$query = str_replace("\r", ' ', $query);
|
|
|
|
$parts = $this->tokenizeQuery($query);
|
|
|
|
foreach($parts as $k => $part) {
|
|
$part = implode(' ', $part);
|
|
switch(strtolower($k)) {
|
|
case 'create':
|
|
$this->type = self::CREATE;
|
|
break;
|
|
case 'insert':
|
|
$this->type = self::INSERT;
|
|
break;
|
|
case 'delete':
|
|
$this->type = self::DELETE;
|
|
break;
|
|
case 'select':
|
|
$this->type = self::SELECT;
|
|
$this->parseSelect($part);
|
|
break;
|
|
case 'update':
|
|
$this->type = self::UPDATE;
|
|
$k = 'FROM';
|
|
|
|
case 'from':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
$parser->parse($part);
|
|
break;
|
|
case 'set':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
$parser->parse($part);
|
|
break;
|
|
case 'group':
|
|
case 'order':
|
|
$k .= 'by';
|
|
case 'where':
|
|
case 'having':
|
|
$class = 'Doctrine_Query_' . ucwords(strtolower($k));
|
|
$parser = new $class($this);
|
|
|
|
$name = strtolower($k);
|
|
$parser->parse($part);
|
|
break;
|
|
case 'limit':
|
|
$this->parts['limit'] = trim($part);
|
|
break;
|
|
case 'offset':
|
|
$this->parts['offset'] = trim($part);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
public function load($path, $loadFields = true)
|
|
{
|
|
// parse custom join conditions
|
|
$e = explode(' ON ', $path);
|
|
|
|
$joinCondition = '';
|
|
|
|
if (count($e) > 1) {
|
|
$joinCondition = ' AND ' . $e[1];
|
|
$path = $e[0];
|
|
}
|
|
|
|
$tmp = explode(' ', $path);
|
|
$originalAlias = (count($tmp) > 1) ? end($tmp) : null;
|
|
|
|
$e = preg_split("/[.:]/", $tmp[0], -1);
|
|
|
|
$fullPath = $tmp[0];
|
|
$prevPath = '';
|
|
$fullLength = strlen($fullPath);
|
|
|
|
if (isset($this->_aliasMap[$e[0]])) {
|
|
$table = $this->_aliasMap[$e[0]]['table'];
|
|
|
|
$prevPath = $parent = array_shift($e);
|
|
}
|
|
|
|
foreach ($e as $key => $name) {
|
|
// get length of the previous path
|
|
$length = strlen($prevPath);
|
|
|
|
// build the current component path
|
|
$prevPath = ($prevPath) ? $prevPath . '.' . $name : $name;
|
|
|
|
$delimeter = substr($fullPath, $length, 1);
|
|
|
|
// if an alias is not given use the current path as an alias identifier
|
|
if (strlen($prevPath) === $fullLength && isset($originalAlias)) {
|
|
$componentAlias = $originalAlias;
|
|
} else {
|
|
$componentAlias = $prevPath;
|
|
}
|
|
|
|
if ( ! isset($table)) {
|
|
// process the root of the path
|
|
|
|
$table = $this->loadRoot($name, $componentAlias);
|
|
} else {
|
|
$join = ($delimeter == ':') ? 'INNER JOIN ' : 'LEFT JOIN ';
|
|
|
|
$relation = $table->getRelation($name);
|
|
|
|
$this->_aliasMap[$componentAlias] = array('table' => $relation->getTable(),
|
|
'parent' => $parent,
|
|
'relation' => $relation);
|
|
if ( ! $relation->isOneToOne()) {
|
|
$this->needsSubquery = true;
|
|
}
|
|
|
|
$localAlias = $this->getShortAlias($parent, $table->getTableName());
|
|
$foreignAlias = $this->getShortAlias($componentAlias, $relation->getTable()->getTableName());
|
|
$localSql = $this->conn->quoteIdentifier($table->getTableName()) . ' ' . $localAlias;
|
|
$foreignSql = $this->conn->quoteIdentifier($relation->getTable()->getTableName()) . ' ' . $foreignAlias;
|
|
|
|
$map = $relation->getTable()->inheritanceMap;
|
|
|
|
if ( ! $loadFields || ! empty($map) || $joinCondition) {
|
|
$this->subqueryAliases[] = $foreignAlias;
|
|
}
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association) {
|
|
$asf = $relation->getAssociationFactory();
|
|
|
|
$assocTableName = $asf->getTableName();
|
|
|
|
if( ! $loadFields || ! empty($map) || $joinCondition) {
|
|
$this->subqueryAliases[] = $assocTableName;
|
|
}
|
|
|
|
$assocPath = $prevPath . '.' . $asf->getComponentName();
|
|
|
|
$assocAlias = $this->getShortAlias($assocPath, $asf->getTableName());
|
|
|
|
$queryPart = $join . $assocTableName . ' ' . $assocAlias . ' ON ' . $localAlias . '.'
|
|
. $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getLocal();
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association_Self) {
|
|
$queryPart .= ' OR ' . $localAlias . '.' . $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getForeign();
|
|
}
|
|
|
|
$this->parts['from'][] = $queryPart;
|
|
|
|
$queryPart = $join . $foreignSql . ' ON ' . $foreignAlias . '.'
|
|
. $relation->getTable()->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getForeign()
|
|
. $joinCondition;
|
|
|
|
if ($relation instanceof Doctrine_Relation_Association_Self) {
|
|
$queryPart .= ' OR ' . $foreignAlias . '.' . $table->getIdentifier() . ' = '
|
|
. $assocAlias . '.' . $relation->getLocal();
|
|
}
|
|
|
|
} else {
|
|
|
|
$queryPart = $join . $foreignSql
|
|
. ' ON ' . $localAlias . '.'
|
|
. $relation->getLocal() . ' = ' . $foreignAlias . '.' . $relation->getForeign()
|
|
. $joinCondition;
|
|
}
|
|
$this->parts['from'][] = $queryPart;
|
|
}
|
|
if ($loadFields) {
|
|
|
|
$restoreState = false;
|
|
// load fields if necessary
|
|
if ($loadFields && empty($this->pendingFields)
|
|
&& empty($this->pendingAggregates)
|
|
&& empty($this->pendingSubqueries)) {
|
|
|
|
$this->pendingFields[$componentAlias] = array('*');
|
|
|
|
$restoreState = true;
|
|
}
|
|
|
|
if(isset($this->pendingFields[$componentAlias])) {
|
|
$this->processPendingFields($componentAlias);
|
|
}
|
|
|
|
if(isset($this->pendingAggregates[$componentAlias]) || isset($this->pendingAggregates[0])) {
|
|
$this->processPendingAggregates($componentAlias);
|
|
}
|
|
|
|
if ($restoreState) {
|
|
$this->pendingFields = array();
|
|
$this->pendingAggregates = array();
|
|
}
|
|
}
|
|
$parent = $prevPath;
|
|
}
|
|
return end($this->_aliasMap);
|
|
}
|
|
/**
|
|
* loadRoot
|
|
*
|
|
* @param string $name
|
|
* @param string $componentAlias
|
|
*/
|
|
public function loadRoot($name, $componentAlias)
|
|
{
|
|
// get the connection for the component
|
|
$this->conn = Doctrine_Manager::getInstance()
|
|
->getConnectionForComponent($name);
|
|
|
|
$table = $this->conn->getTable($name);
|
|
$tableName = $table->getTableName();
|
|
|
|
// get the short alias for this table
|
|
$tableAlias = $this->aliasHandler->getShortAlias($componentAlias, $tableName);
|
|
// quote table name
|
|
$queryPart = $this->conn->quoteIdentifier($tableName);
|
|
|
|
if ($this->type === self::SELECT) {
|
|
$queryPart .= ' ' . $tableAlias;
|
|
}
|
|
|
|
$this->parts['from'][] = $queryPart;
|
|
$this->tableAliases[$tableAlias] = $componentAlias;
|
|
$this->_aliasMap[$componentAlias] = array('table' => $table);
|
|
|
|
return $table;
|
|
}
|
|
/**
|
|
* count
|
|
* fetches the count of the query
|
|
*
|
|
* This method executes the main query without all the
|
|
* selected fields, ORDER BY part, LIMIT part and OFFSET part.
|
|
*
|
|
* Example:
|
|
* Main query:
|
|
* SELECT u.*, p.phonenumber FROM User u
|
|
* LEFT JOIN u.Phonenumber p
|
|
* WHERE p.phonenumber = '123 123' LIMIT 10
|
|
*
|
|
* The query this method executes:
|
|
* SELECT COUNT(DISTINCT u.id) FROM User u
|
|
* LEFT JOIN u.Phonenumber p
|
|
* WHERE p.phonenumber = '123 123'
|
|
*
|
|
* @param array $params an array of prepared statement parameters
|
|
* @return integer the count of this query
|
|
*/
|
|
public function count($params = array())
|
|
{
|
|
// initialize temporary variables
|
|
$where = $this->parts['where'];
|
|
$having = $this->parts['having'];
|
|
$map = reset($this->_aliasMap);
|
|
$componentAlias = key($this->_aliasMap);
|
|
$table = $map['table'];
|
|
|
|
// build the query base
|
|
$q = 'SELECT COUNT(DISTINCT ' . $this->aliasHandler->getShortAlias($table->getTableName())
|
|
. '.' . $table->getIdentifier()
|
|
. ') FROM ' . $this->buildFromPart();
|
|
|
|
// append column aggregation inheritance (if needed)
|
|
$string = $this->applyInheritance();
|
|
|
|
if ( ! empty($string)) {
|
|
$where[] = $string;
|
|
}
|
|
// append conditions
|
|
$q .= ( ! empty($where)) ? ' WHERE ' . implode(' AND ', $where) : '';
|
|
$q .= ( ! empty($having)) ? ' HAVING ' . implode(' AND ', $having): '';
|
|
|
|
if ( ! is_array($params)) {
|
|
$params = array($params);
|
|
}
|
|
// append parameters
|
|
$params = array_merge($this->params, $params);
|
|
|
|
return (int) $this->getConnection()->fetchOne($q, $params);
|
|
}
|
|
|
|
/**
|
|
* query
|
|
* query the database with DQL (Doctrine Query Language)
|
|
*
|
|
* @param string $query DQL query
|
|
* @param array $params prepared statement parameters
|
|
* @see Doctrine::FETCH_* constants
|
|
* @return mixed
|
|
*/
|
|
public function query($query, $params = array())
|
|
{
|
|
$this->parseQuery($query);
|
|
|
|
return $this->execute($params);
|
|
}
|
|
/**
|
|
* getShortAlias
|
|
* some database such as Oracle need the identifier lengths to be < ~30 chars
|
|
* hence Doctrine creates as short identifier aliases as possible
|
|
*
|
|
* this method is used for the creation of short table aliases, its also
|
|
* smart enough to check if an alias already exists for given component (componentAlias)
|
|
*
|
|
* @param string $componentAlias the alias for the query component to search table alias for
|
|
* @param string $tableName the table name from which the table alias is being created
|
|
* @return string the generated / fetched short alias
|
|
*/
|
|
public function getShortAlias($componentAlias, $tableName)
|
|
{
|
|
return $this->aliasHandler->getShortAlias($componentAlias, $tableName);
|
|
}
|
|
}
|