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doctrine2/lib/Doctrine/Cache/Xcache.php

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2007-11-25 23:45:33 +03:00
<?php
/*
* $Id: Xcache.php 2007-11-19 14:47:59Z demongloom $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
Doctrine::autoload('Doctrine_Cache_Driver');
/**
* Doctrine_Cache_Xcache
*
* @package Doctrine
* @subpackage Cache
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision: $
* @author Dmitry Bakaleinik (dima@snaiper.net)
*/
class Doctrine_Cache_Xcache extends Doctrine_Cache_Driver
{
/**
* constructor
*
* @param array $options associative array of cache driver options
*/
public function __construct($options = array())
{
if ( !extension_loaded('xcache') ) {
throw new Doctrine_Cache_Exception('In order to use Xcache driver, the xcache extension must be loaded.');
}
parent::__construct($options);
}
/**
* Test if a cache is available for the given id and (if yes) return it (false else)
*
* Note : return value is always "string" (unserialization is done by the core not by the backend)
*
* @param string $id cache id
* @param boolean $testCacheValidity if set to false, the cache validity won't be tested
* @return string cached datas (or false)
*/
public function fetch($id, $testCacheValidity = true)
{
return $this->contains($id) ? xcache_get($id) : false;
}
/**
* Test if a cache is available or not (for the given id)
*
* @param string $id cache id
* @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
*/
public function contains($id)
{
return xcache_isset($id);
}
/**
* Save some string datas into a cache record
*
* Note : $data is always saved as a string
*
* @param string $data data to cache
* @param string $id cache id
* @param int $lifeTime if != false, set a specific lifetime for this cache record (null => infinite lifeTime)
* @return boolean true if no problem
*/
public function save($id, $data, $lifeTime = false)
{
return xcache_set($id, $data, $lifeTime);
}
/**
* Remove a cache record
*
* @param string $id cache id
* @return boolean true if no problem
*/
public function delete($id)
{
return xcache_unset($id);
}
}