# CacheSegmentHandler.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     final class CacheSegmentHandler implements SegmentHandler
    00016     {
    00017         private $index = null;
    00018
    00019         public function __construct($segmentId)
    00020         {
    00021             $this->index = $segmentId;
    00022         }
    00023
    00024         public function touch($key)
    00025         {
    00026             if (!Cache::me()->append($this->index, $key)) {
    00027                 return
    00028                     Cache::me()->set(
    00029                         $this->index,
    00030                         '|'.$key,
    00031                         Cache::EXPIRES_FOREVER
    00032                     );
    00033             }
    00034
    00035             return true;
    00036         }
    00037
    00038         public function unlink($key)
    00039         {
    00040             if ($data = Cache::me()->get($this->index)) {
    00041                 return
    00042                     Cache::me()->set(
    00043                         $this->index,
    00044                         str_replace('|'.$key, null, $data),
    00045                         Cache::EXPIRES_FOREVER
    00046                     );
    00047             }
    00048
    00049             return false;
    00050         }
    00051
    00052         public function ping($key)
    00053         {
    00054             if ($data = Cache::me()->get($this->index)) {
    00055                 return (strpos($data, '|'.$key) !== false);
    00056             }
    00057
    00058             return false;
    00059         }
    00060
    00061         public function drop()
    00062         {
    00063             return Cache::me()->delete($this->index);
    00064         }
    00065     }
    00066 ?>