CountProjection.class.php

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00001 <?php
00002 /***************************************************************************
00003  *   Copyright (C) 2007 by Konstantin V. Arkhipov                          *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU Lesser General Public License as        *
00007  *   published by the Free Software Foundation; either version 3 of the    *
00008  *   License, or (at your option) any later version.                       *
00009  *                                                                         *
00010  ***************************************************************************/
00011 
00015     abstract class CountProjection extends BaseProjection
00016     {
00020         public function process(Criteria $criteria, JoinCapableQuery $query)
00021         {
00022             return $query->get($this->getFunction($criteria, $query));
00023         }
00024         
00028         protected function getFunction(
00029             Criteria $criteria,
00030             JoinCapableQuery $query
00031         )
00032         {
00033             Assert::isNotNull($this->property);
00034             
00035             return
00036                 SQLFunction::create(
00037                     'count',
00038                     $this->property
00039                         ? $criteria->getDao()->guessAtom($this->property, $query)
00040                         : $criteria->getDao()->getIdName()
00041                 )->
00042                 setAlias($this->alias);
00043         }
00044     }
00045 ?>