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

60 lines
2.1 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>.
*/
/**
* DeleteStatement = DeleteClause [WhereClause]
*
* @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 1.0
* @version $Revision$
*/
class Doctrine_Query_Production_DeleteStatement extends Doctrine_Query_Production
{
protected $_deleteClause;
protected $_whereClause;
public function syntax($paramHolder)
{
// DeleteStatement = DeleteClause [WhereClause]
$this->_deleteClause = $this->AST('DeleteClause', $paramHolder);
if ($this->_isNextToken(Doctrine_Query_Token::T_WHERE)) {
$this->_whereClause = $this->AST('WhereClause', $paramHolder);
}
}
public function buildSql()
{
// The 1=1 is needed to workaround the affected_rows in MySQL.
// Simple "DELETE FROM table_name" gives 0 affected rows.
return $this->_deleteClause->buildSql() . (($this->_whereClause !== null)
? ' ' . $this->_whereClause->buildSql() : ' WHERE 1 = 1');
}
}