OqlQueryExpressionClause.class.php

Go to the documentation of this file.
00001 <?php
00002 /****************************************************************************
00003  *   Copyright (C) 2009 by Vladlen Y. Koshelev                              *
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 OqlQueryExpressionClause extends OqlQueryClause
00016     {
00017         protected $expression = null;
00018         
00022         public function getExpression()
00023         {
00024             return $this->expression;
00025         }
00026         
00030         public function setExpression(OqlQueryExpression $expression)
00031         {
00032             $this->checkExpression($expression);
00033             $this->expression = $expression;
00034             
00035             return $this;
00036         }
00037         
00038         public function toLogic()
00039         {
00040             Assert::isNotNull($this->expression);
00041             
00042             return $this->expression->evaluate($this->parameters);
00043         }
00044         
00045         protected static function checkExpression(OqlQueryExpression $expression)
00046         {
00047         }
00048     }
00049 ?>