1
0
mirror of synced 2024-12-16 08:06:02 +03:00
doctrine2/lib/Doctrine/ORM/Query/Production/Join.php

163 lines
5.6 KiB
PHP

<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* Join = ["LEFT" | "INNER"] "JOIN" RangeVariableDeclaration [("ON" | "WITH") ConditionalExpression]
*
* @package Doctrine
* @subpackage Query
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Janne Vanhala <jpvanhal@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link http://www.phpdoctrine.org
* @since 2.0
* @version $Revision$
*/
class Doctrine_Query_Production_Join extends Doctrine_Query_Production
{
protected $_joinType;
protected $_rangeVariableDeclaration;
protected $_whereType;
protected $_conditionalExpression;
public function syntax($paramHolder)
{
$this->_joinType = 'INNER';
$this->_whereType = 'WITH';
if ($this->_isNextToken(Doctrine_Query_Token::T_LEFT)) {
$this->_parser->match(Doctrine_Query_Token::T_LEFT);
$this->_joinType = 'LEFT';
} else if ($this->_isNextToken(Doctrine_Query_Token::T_INNER)) {
$this->_parser->match(Doctrine_Query_Token::T_INNER);
}
$this->_parser->match(Doctrine_Query_Token::T_JOIN);
$this->_rangeVariableDeclaration = $this->AST('RangeVariableDeclaration', $paramHolder);
if ($this->_isNextToken(Doctrine_Query_Token::T_ON)) {
$this->_parser->match(Doctrine_Query_Token::T_ON);
$this->_whereType = 'ON';
$this->_conditionalExpression = $this->AST('ConditionalExpression', $paramHolder);
} else if ($this->_isNextToken(Doctrine_Query_Token::T_WITH)) {
$this->_parser->match(Doctrine_Query_Token::T_WITH);
$this->_conditionalExpression = $this->AST('ConditionalExpression', $paramHolder);
}
}
public function buildSql()
{
$parserResult = $this->_parser->getParserResult();
// Get the connection for the component
$conn = $this->_em->getConnection();
$sql = $this->_joinType . ' JOIN ' . $this->_rangeVariableDeclaration->buildSql();
$conditionExpression = isset($this->_conditionExpression)
? $this->_conditionExpression->buildSql() : '';
if ($this->_whereType == 'ON') {
return $sql . ' ON ' . $conditionExpression;
}
// We need to build the join conditions. Retrieving AssociationMapping
$queryComponent = $this->_rangeVariableDeclaration->getQueryComponent();
$association = $queryComponent['relation'];
$joinColumns = array();
if ($association->isOneToMany() || $association->isOneToOne()) {
if ($association->isInverseSide()) {
// joinColumns are found on the other (owning) side
$targetClass = $this->_em->getClassMetadata($association->getTargetEntityName());
$joinColumns = $targetClass->getAssociationMapping($association->getMappedByFieldName())
->getTargetToSourceKeyColumns();
} else {
$joinColumns = $association->getSourceToTargetKeyColumns();
}
} else {
//TODO: many-many
}
$relationConditionExpression = '';
// We have an array('localColumn' => 'foreignColumn', ...) here
foreach ($joinColumns as $localColumn => $foreignColumn) {
// leftExpression = rightExpression
// Defining leftExpression
$leftExpression = $conn->quoteIdentifier(
$parserResult->getTableAliasFromComponentAlias($queryComponent['parent']) . '.' . $localColumn
);
// Defining rightExpression
$rightExpression = $conn->quoteIdentifier(
$parserResult->getTableAliasFromComponentAlias(
$this->_rangeVariableDeclaration->getIdentificationVariable()
) . '.' . $foreignColumn
);
// Building the relation
$relationConditionExpression .= (($relationConditionExpression != '') ? ' AND ' : '')
. $leftExpression . ' = ' . $rightExpression;
}
$sql .= ' ON ' . $relationConditionExpression;
$sql .= empty($conditionExpression) ? '' : ' AND (' . $conditionExpression . ')';
return $sql;
}
/* Getters */
public function getJoinType()
{
return $this->_joinType;
}
public function getRangeVariableDeclaration()
{
return $this->_rangeVariableDeclaration;
}
public function getWhereType()
{
return $this->_whereType;
}
public function getConditionalExpression()
{
return $this->_conditionalExpression;
}
}