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doctrine2/lib/Doctrine/Query/Production/Primary.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>.
*/
/**
* Primary = PathExpression | Atom | "(" Expression ")" | Function | AggregateExpression
*
* @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_Primary extends Doctrine_Query_Production
{
protected $_expression;
public function syntax($paramHolder)
{
// Primary = PathExpression | Atom | "(" Expression ")" | Function | AggregateExpression
switch ($this->_parser->lookahead['type']) {
case Doctrine_Query_Token::T_IDENTIFIER:
if ($this->_isFunction()) {
return $this->AST('Function', $paramHolder);
} else {
return $this->AST('PathExpression', $paramHolder);
}
break;
case Doctrine_Query_Token::T_STRING:
case Doctrine_Query_Token::T_INTEGER:
case Doctrine_Query_Token::T_FLOAT:
case Doctrine_Query_Token::T_INPUT_PARAMETER:
return $this->AST('Atom', $paramHolder);
break;
case Doctrine_Query_Token::T_AVG:
case Doctrine_Query_Token::T_COUNT:
case Doctrine_Query_Token::T_MAX:
case Doctrine_Query_Token::T_MIN:
case Doctrine_Query_Token::T_SUM:
return $this->AST('AggregateExpression', $paramHolder);
break;
case Doctrine_Query_Token::T_NONE:
if ($this->_isNextToken('(')) {
$this->_parser->match('(');
$this->_expression = $this->AST('Expression', $paramHolder);
$this->_parser->match(')');
}
break;
default:
$this->_parser->syntaxError('Could not process primary type');
break;
}
}
public function buildSql()
{
return '(' . $this->_expression->buildSql() . ')';
}
}