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doctrine2/lib/Doctrine/ORM/Query/Parser/Join.php

91 lines
3.9 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" ["OUTER"] | "INNER"] "JOIN" JoinAssociationPathExpression
* ["AS"] AliasIdentificationVariable [("ON" | "WITH") ConditionalExpression]
*
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link http://www.phpdoctrine.org
* @since 2.0
* @version $Revision$
*/
class Doctrine_ORM_Query_Parser_Join extends Doctrine_ORM_Query_ParserRule
{
protected $_AST = null;
public function syntax($paramHolder)
{
// Join ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" JoinAssociationPathExpression
// ["AS"] AliasIdentificationVariable [("ON" | "WITH") ConditionalExpression]
$this->_AST = $this->AST('Join');
// Check Join type
if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_LEFT)) {
$this->_parser->match(Doctrine_ORM_Query_Token::T_LEFT);
// Possible LEFT OUTER join
if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_OUTER)) {
$this->_parser->match(Doctrine_ORM_Query_Token::T_OUTER);
$this->_AST->setJoinType(Doctrine_ORM_Query_AST_Join::JOIN_TYPE_LEFTOUTER);
} else {
$this->_AST->setJoinType(Doctrine_ORM_Query_AST_Join::JOIN_TYPE_LEFT);
}
} else if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_INNER)) {
// Default Join type. Not need to setJoinType.
$this->_parser->match(Doctrine_ORM_Query_Token::T_INNER);
}
$this->_parser->match(Doctrine_ORM_Query_Token::T_JOIN);
$this->_AST->setJoinAssociationPathExpression($this->parse('JoinAssociationPathExpression', $paramHolder));
if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_AS)) {
$this->_parser->match(Doctrine_ORM_Query_Token::T_AS);
}
$this->_AST->setAliasIdentificationVariable($this->parse('AliasIdentificationVariable', $paramHolder));
// Check Join where type
if (
$this->_isNextToken(Doctrine_ORM_Query_Token::T_ON) ||
$this->_isNextToken(Doctrine_ORM_Query_Token::T_WITH)
) {
// Apply matches and adjusts
if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_ON)) {
$this->_parser->match(Doctrine_ORM_Query_Token::T_ON);
$this->_AST->setWhereType(Doctrine_ORM_Query_AST_Join::JOIN_WHERE_ON);
} else {
// Default Join where type. Not need to setWhereType.
$this->_parser->match(Doctrine_ORM_Query_Token::T_WITH);
}
$this->_AST->setConditionalExpression($this->parse('ConditionalExpression', $paramHolder));
}
// Return AST node
return $this->_AST;
}
}