/home/edulekha/studygroup.edulekha.com/ow_system_plugins/base/bol/db_cache_service.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.
*/
/**
* Database cache service
*
* @author Sergey Kambalin <greyexpert@gmail.com>
* @package ow_system_plugins.base.bol
* @since 1.0
*/
class BOL_DbCacheService implements OW_CacheService
{
/**
*
* @var BOL_DbCacheDao
*/
private $dbCacheDao;
private function __construct()
{
$this->dbCacheDao = BOL_DbCacheDao::getInstance();
}
/**
* Class instance
*
* @var BOL_DbCacheService
*/
private static $classInstance;
/**
* Returns class instance
*
* @return BOL_DbCacheService
*/
public static function getInstance()
{
if ( !isset(self::$classInstance) )
{
self::$classInstance = new self();
}
return self::$classInstance;
}
public function get( $key )
{
$dto = $this->dbCacheDao->findByName($key);
return $dto === null ? false : $dto->value;
}
public function set( $key, $var, $lifeTime = 0 )
{
$dto = $this->dbCacheDao->findByName($key);
if ( $dto === null )
{
$dto = new BOL_DbCache();
$dto->name = $key;
}
$dto->expireStamp = empty($lifeTime) ? PHP_INT_MAX : time() + $lifeTime;
$dto->value = $var;
$this->dbCacheDao->save($dto);
}
public function deleteExpiredList()
{
$this->dbCacheDao->deleteExpiredList();
}
}