/home/edulekha/studygroup.edulekha.com/ow_core/cache_manager.php
<?php
/**
* EXHIBIT A. Common Public Attribution License Version 1.0
* The contents of this file are subject to the Common Public Attribution License Version 1.0 (the “License”);
* you may not use this file except in compliance with the License. You may obtain a copy of the License at
* http://www.oxwall.org/license. The License is based on the Mozilla Public License Version 1.1
* but Sections 14 and 15 have been added to cover use of software over a computer network and provide for
* limited attribution for the Original Developer. In addition, Exhibit A has been modified to be consistent
* with Exhibit B. Software distributed under the License is distributed on an “AS IS” basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language
* governing rights and limitations under the License. The Original Code is Oxwall software.
* The Initial Developer of the Original Code is Oxwall Foundation (http://www.oxwall.org/foundation).
* All portions of the code written by Oxwall Foundation are Copyright (c) 2011. All Rights Reserved.
* EXHIBIT B. Attribution Information
* Attribution Copyright Notice: Copyright 2011 Oxwall Foundation. All rights reserved.
* Attribution Phrase (not exceeding 10 words): Powered by Oxwall community software
* Attribution URL: http://www.oxwall.org/
* Graphic Image as provided in the Covered Code.
* Display of Attribution Information is required in Larger Works which are defined in the CPAL as a work
* which combines Covered Code or portions thereof with code not governed by the terms of the CPAL.
*/
/**
* The class is a gateway for auth. adapters and provides common API to authenticate users.
*
* @author Sardar Madumarov <madumarov@gmail.com>
* @package ow_core
* @method static OW_CacheManager getInstance()
* @since 1.0
*/
class OW_CacheManager
{
use OW_Singleton;
const CLEAN_ALL = 'all';
const CLEAN_OLD = 'old';
const CLEAN_MATCH_TAGS = 'match_tag';
const CLEAN_MATCH_ANY_TAG = 'match_any_tag';
const CLEAN_NOT_MATCH_TAGS = 'not_match_tags';
const TAG_OPTION_INSTANT_LOAD = 'base.tag_option.instant_load';
/**
* @var OW_ICacheBackend
*/
private $cacheBackend;
/**
* @var integer
*/
private $lifetime;
/**
* @var boolean
*/
private $cacheEnabled;
/**
* Constructor.
*/
private function __construct()
{
$this->cacheEnabled = !false;
}
public function getCacheEnabled()
{
return $this->cacheEnabled;
}
public function setCacheEnabled( $cacheEnabled )
{
$this->cacheEnabled = (bool) $cacheEnabled;
}
public function load( $key )
{
if ( $this->cacheAvailable() )
{
return $this->cacheBackend->load($key);
}
return null;
}
public function test( $key )
{
if ( $this->cacheAvailable() )
{
return $this->cacheBackend->test($key);
}
return false;
}
public function save( $data, $key, $tags = array(), $specificLifetime = false )
{
if ( $this->cacheAvailable() )
{
return $this->cacheBackend->save($data, $key, $tags, ($specificLifetime === false ? $this->lifetime : $specificLifetime));
}
return false;
}
public function remove( $key )
{
if ( $this->cacheAvailable() )
{
return $this->cacheBackend->remove($key);
}
return false;
}
public function clean( $tags = array(), $mode = self::CLEAN_MATCH_ANY_TAG )
{
if ( $this->cacheAvailable() )
{
return $this->cacheBackend->clean($tags, $mode);
}
return false;
}
/**
* @param OW_ICacheBackend $cacheBackend
*/
public function setCacheBackend( OW_ICacheBackend $cacheBackend )
{
$this->cacheBackend = $cacheBackend;
}
/**
* @param int $lifetime
*/
public function setLifetime( $lifetime )
{
$this->lifetime = $lifetime;
}
private function cacheAvailable()
{
return $this->cacheBackend !== null && $this->cacheEnabled;
}
}