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doctrine2/lib/Doctrine/Query/Production/UpdateItem.php

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2008-05-24 22:18:37 +04:00
<?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>.
*/
/**
* UpdateItem = PathExpression "=" (Expression | "NULL")
*
* @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
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* @version $Revision$
*/
class Doctrine_Query_Production_UpdateItem extends Doctrine_Query_Production
{
protected $_pathExpression;
protected $_expression;
public function syntax($paramHolder)
{
// UpdateItem = PathExpression "=" (Expression | "NULL")
$this->_pathExpression = $this->AST('PathExpression', $paramHolder);
$this->_parser->match('=');
if ($this->_isNextToken(Doctrine_Query_Token::T_NULL)) {
$this->_parser->match(Doctrine_Query_Token::T_NULL);
$this->_expression = null;
} else {
$this->_expression = $this->AST('Expression', $paramHolder);
}
}
public function buildSql()
{
return $this->_pathExpression->buildSql() . ' = '
. ($this->_expression === null ? 'NULL' : $this->_expression->buildSql());
}
/**
* Visitor support.
*/
public function accept($visitor)
{
$this->_pathExpression->accept($visitor);
if ($this->_expression) {
$this->_expression->accept($visitor);
}
$visitor->visitUpdateItem($this);
}
/* Getters */
public function getPathExpression()
{
return $this->_pathExpression;
}
public function getExpression()
{
return $this->_expression;
}
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}