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egroupware_official/emailadmin/inc/class.emailadmin_horde_cache.inc.php
2015-01-21 19:49:09 +00:00

92 lines
2.3 KiB
PHP

<?php
/**
* EGroupware EMailAdmin: Horde_Cache compatible class using egw_cache
*
* @link http://www.stylite.de
* @package emailadmin
* @author Ralf Becker <rb-AT-stylite.de>
* @copyright (c) 2013 by Ralf Becker <rb-AT-stylite.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
/**
* Horde_Cache compatible class using egw_cache
*/
class emailadmin_horde_cache
{
/**
* App to use
*/
const APP = 'mail';
/**
* How to cache: instance-specific
*/
const LEVEL = egw_cache::INSTANCE;
/**
* Retrieve cached data.
*
* @param string $key Object ID to query.
* @param integer $lifetime Lifetime of the object in seconds.
*
* @return mixed Cached data, or false if none was found.
*/
public function get($key, $lifetime = 0)
{
$ret = egw_cache::getCache(self::LEVEL, 'mail', $key);
return !is_null($ret) ? $ret : false;
}
/**
* Store an object in the cache.
*
* @param string $key Object ID used as the caching key.
* @param mixed $data Data to store in the cache.
* @param integer $lifetime Object lifetime - i.e. the time before the
* data becomes available for garbage
* collection. If 0 will not be GC'd.
*/
public function set($key, $data, $lifetime = 0)
{
egw_cache::setCache(self::LEVEL, 'mail', $key, $data, $lifetime);
}
/**
* Checks if a given key exists in the cache, valid for the given
* lifetime.
*
* @param string $key Cache key to check.
* @param integer $lifetime Lifetime of the key in seconds.
*
* @return boolean Existence.
*/
public function exists($key, $lifetime = 0)
{
return !is_null(egw_cache::getCache(self::LEVEL, 'mail', $key));
}
/**
* Expire any existing data for the given key.
*
* @param string $key Cache key to expire.
*
* @return boolean Success or failure.
*/
public function expire($key)
{
egw_cache::unsetCache(self::LEVEL, 'mail', $key);
}
/**
* Clears all data from the cache.
*
* @throws Horde_Cache_Exception
*/
public function clear()
{
egw_cache::flush(self::LEVEL, self::APP);
}
}