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

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<?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>.
*/
/**
* ComparisonExpression = ComparisonOperator ( QuantifiedExpression | Expression | "(" Subselect ")" )
*
* @package Doctrine
* @subpackage Query
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @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_ComparisonExpression extends Doctrine_Query_Production
{
protected $_operator;
protected $_expression;
protected $_isSubselect;
public function syntax($paramHolder)
{
// ComparisonExpression = ComparisonOperator ( QuantifiedExpression | Expression | "(" Subselect ")" )
$this->_operator = $this->AST('ComparisonOperator', $paramHolder);
if (($this->_isSubselect = $this->_isSubselect()) === true) {
$this->_parser->match('(');
$this->_expression = $this->AST('Subselect', $paramHolder);
$this->_parser->match(')');
$this->_isSubselect = true;
} else {
switch ($this->_parser->lookahead['type']) {
case Doctrine_Query_Token::T_ALL:
case Doctrine_Query_Token::T_ANY:
case Doctrine_Query_Token::T_SOME:
$this->_expression = $this->AST('QuantifiedExpression', $paramHolder);
break;
default:
$this->_expression = $this->AST('Expression', $paramHolder);
break;
}
}
}
public function buildSql()
{
return $this->_operator . ' ' . (($this->_isSubselect) ?
'(' . $this->_expression->buildSql() . ')' : $this->_expression->buildSql()
);
}
/* Getters */
public function getOperator()
{
return $this->_operator;
}
public function getExpression()
{
return $this->_expression;
}
public function isSubselect()
{
return $this->_isSubselect;
}
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}