OqlProjectionClause.class.php

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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     class OqlProjectionClause extends OqlQueryListedClause
00016     {
00020         public static function create()
00021         {
00022             return new self;
00023         }
00024         
00028         public function toProjection()
00029         {
00030             $projection = Projection::chain();
00031             foreach ($this->list as $property) {
00032                 $projection->add(
00033                     $property->evaluate($this->parameters)
00034                 );
00035             }
00036             
00037             return $projection;
00038         }
00039     }
00040 ?>