119 lines
3.5 KiB
PHP
119 lines
3.5 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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* AggregateExpression = ("AVG" | "MAX" | "MIN" | "SUM" | "COUNT") "(" ["DISTINCT"] Expression ")"
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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_AggregateExpression extends Doctrine_Query_Production
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{
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protected $_functionName;
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protected $_isDistinct;
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protected $_expression;
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public function syntax($paramHolder)
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{
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// AggregateExpression = ("AVG" | "MAX" | "MIN" | "SUM" | "COUNT") "(" ["DISTINCT"] Expression ")"
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$this->_isDistinct = false;
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$token = $this->_parser->lookahead;
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switch ($token['type']) {
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case Doctrine_Query_Token::T_AVG:
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case Doctrine_Query_Token::T_MAX:
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case Doctrine_Query_Token::T_MIN:
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case Doctrine_Query_Token::T_SUM:
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case Doctrine_Query_Token::T_COUNT:
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$this->_parser->match($token['type']);
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$this->_functionName = strtoupper($token['value']);
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break;
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default:
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$this->_parser->logError('AVG, MAX, MIN, SUM or COUNT');
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break;
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}
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$this->_parser->match('(');
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if ($this->_isNextToken(Doctrine_Query_Token::T_DISTINCT)) {
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$this->_parser->match(Doctrine_Query_Token::T_DISTINCT);
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$this->_isDistinct = true;
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}
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$this->_expression = $this->AST('Expression', $paramHolder);
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$this->_parser->match(')');
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}
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public function semantical($paramHolder)
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{
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$this->_expression->semantical($paramHolder);
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}
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public function buildSql()
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{
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return $this->_functionName
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. '(' . (($this->_isDistinct) ? 'DISTINCT ' : '')
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. $this->_expression->buildSql()
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. ')';
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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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$this->_expression->accept($visitor);
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$visitor->visitAggregateExpression($this);
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}
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/* Getters */
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public function getExpression()
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{
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return $this->_expression;
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}
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public function getFunctionName()
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{
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return $this->_functionName;
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}
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public function isDistinct()
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{
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return $this->_isDistinct;
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}
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}
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