classes/plfilterorder.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2010 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 abstract class PlFilterOrder
  23 {
  24     protected $desc = false;
  25     public function __construct($desc = false)
  26     {
  27         $this->desc = $desc;
  28     }
  29
  30     public function buildSort(PlFilter &$pf)
  31     {
  32         $sel = $this->getSortTokens($pf);
  33         if (!is_array($sel)) {
  34             $sel = array($sel);
  35         }
  36         if ($this->desc) {
  37             foreach ($sel as $k => $s) {
  38                 $sel[$k] = $s . ' DESC';
  39             }
  40         }
  41         return $sel;
  42     }
  43
  44     abstract protected function getSortTokens(PlFilter &$pf);
  45 }
  46
  47 ?>