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doctrine2/lib/Doctrine/ORM/Query/Production/SimpleSelectClause.php

92 lines
2.7 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>.
*/
/**
* SimpleSelectClause = "SELECT" ["DISTINCT"] SelectExpression
*
* @package Doctrine
* @subpackage Query
* @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_SimpleSelectClause extends Doctrine_Query_Production
{
protected $_isDistinct;
protected $_selectExpression;
public function syntax($paramHolder)
{
// SimpleSelectClause = "SELECT" ["DISTINCT"] SelectExpression
$this->_isDistinct = false;
$this->_parser->match(Doctrine_Query_Token::T_SELECT);
if ($this->_isNextToken(Doctrine_Query_Token::T_DISTINCT)) {
$this->_parser->match(Doctrine_Query_Token::T_DISTINCT);
$this->_isDistinct = true;
}
$this->_selectExpression = $this->AST('SelectExpression', $paramHolder);
}
public function semantical($paramHolder)
{
// We need to validate the SelectExpression
$this->_selectExpression->semantical($paramHolder);
}
public function buildSql()
{
return 'SELECT ' . (($this->_isDistinct) ? 'DISTINCT ' : '')
. $this->_selectExpression->buildSql();
}
/**
* Visitor support
*
* @param object $visitor
*/
public function acccept($visitor)
{
$this->_selectExpression->accept($visitor);
$visitor->visitSimpleSelectClause($this);
}
/* Getters */
public function isDistinct()
{
return $this->_isDistinct;
}
public function getSelectExpression()
{
return $this->_selectExpression;
}
}