86 lines
2.7 KiB
PHP
86 lines
2.7 KiB
PHP
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<?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.org>.
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*/
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/**
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* DeleteStatement = DeleteClause [WhereClause]
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*
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* @package Doctrine
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* @subpackage Query
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Janne Vanhala <jpvanhal@cc.hut.fi>
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link http://www.phpdoctrine.org
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* @since 2.0
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* @version $Revision$
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*/
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class Doctrine_Query_Production_DeleteStatement extends Doctrine_Query_Production
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{
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protected $_deleteClause;
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protected $_whereClause;
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public function syntax($paramHolder)
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{
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// DeleteStatement = DeleteClause [WhereClause]
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$this->_deleteClause = $this->AST('DeleteClause', $paramHolder);
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if ($this->_isNextToken(Doctrine_Query_Token::T_WHERE)) {
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$this->_whereClause = $this->AST('WhereClause', $paramHolder);
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}
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}
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public function buildSql()
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{
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// The 1=1 is needed to workaround the affected_rows in MySQL.
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// Simple "DELETE FROM table_name" gives 0 affected rows.
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return $this->_deleteClause->buildSql() . (($this->_whereClause !== null)
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? ' ' . $this->_whereClause->buildSql() : ' WHERE 1 = 1');
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}
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/**
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* Visitor support
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*
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* @param object $visitor
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*/
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public function accept($visitor)
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{
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$this->_deleteClause->accept($visitor);
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if ($this->_whereClause) {
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$this->_whereClause->accept($visitor);
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}
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$visitor->visitDeleteStatement($this);
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}
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/* Getters */
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public function getDeleteClause()
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{
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return $this->_deleteClause;
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}
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public function getWhereClause()
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{
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return $this->_whereClause;
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}
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}
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