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<?php
/**
* @version $id:$
* @package Joomla.Framework
* @subpackage Cache
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* XCache cache storage handler
*
* @package Joomla.Framework
* @subpackage Cache
* @since 1.5
*/
class JCacheStorageXCache extends JCacheStorage
{
/**
* Constructor
*
* @access protected
* @param array $options optional parameters
*/
function __construct( $options = array() )
{
parent::__construct($options);
$config =& JFactory::getConfig();
$this->_hash = $config->getValue('config.secret');
}
/**
* Get cached data by id and group
*
* @access public
* @param string $id The cache data id
* @param string $group The cache data group
* @param boolean $checkTime True to verify cache time expiration threshold
* @return mixed Boolean false on failure or a cached data string
* @since 1.5
*/
function get($id, $group, $checkTime)
{
$cache_id = $this->_getCacheId($id, $group);
//check if id exists
if( !xcache_isset( $cache_id ) ){
return false;
}
return xcache_get($cache_id);
}
/**
* Store the data by id and group
*
* @access public
* @param string $id The cache data id
* @param string $group The cache data group
* @param string $data The data to store in cache
* @return boolean True on success, false otherwise
* @since 1.5
*/
function store($id, $group, $data)
{
$cache_id = $this->_getCacheId($id, $group);
return xcache_set($cache_id, $data, $this->_lifetime);
}
/**
* Remove a cached data entry by id and group
*
* @access public
* @param string $id The cache data id
* @param string $group The cache data group
* @return boolean True on success, false otherwise
* @since 1.5
*/
function remove($id, $group)
{
$cache_id = $this->_getCacheId($id, $group);
if( !xcache_isset( $cache_id ) ){
return true;
}
return xcache_unset($cache_id);
}
/**
* Clean cache for a group given a mode.
*
* group mode : cleans all cache in the group
* notgroup mode : cleans all cache not in the group
*
* @access public
* @param string $group The cache data group
* @param string $mode The mode for cleaning cache [group|notgroup]
* @return boolean True on success, false otherwise
* @since 1.5
*/
function clean($group, $mode)
{
return true;
}
/**
* Test to see if the cache storage is available.
*
* @static
* @access public
* @return boolean True on success, false otherwise.
*/
function test()
{
return (extension_loaded('xcache'));
}
/**
* Get a cache_id string from an id/group pair
*
* @access private
* @param string $id The cache data id
* @param string $group The cache data group
* @return string The cache_id string
* @since 1.5
*/
function _getCacheId($id, $group)
{
$name = md5($this->_application.'-'.$id.'-'.$this->_hash.'-'.$this->_language);
return 'cache_'.$group.'-'.$name;
}
}