FieldGroup.class.php

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00001 <?php
00002 /***************************************************************************
00003  *   Copyright (C) 2006-2007 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     final class FieldGroup implements DialectString
00016     {
00017         private $list = array();
00018         
00022         public function add(Castable $field)
00023         {
00024             $this->list[] = $field;
00025             
00026             return $this;
00027         }
00028         
00029         public function toDialectString(Dialect $dialect)
00030         {
00031             if (!$this->list)
00032                 return null;
00033             
00034             $out = array();
00035             
00036             foreach ($this->list as $field)
00037                 $out[] = $field->toDialectString($dialect);
00038             
00039             return implode(', ', $out);
00040         }
00041     }
00042 ?>