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<?php
/*
* $Id: Apc.php 10831 2013-05-29 19:32:17Z btowles $
*
* 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.doctrine-project.org>.
*/
/**
* APC Cache Driver
*
* @package Doctrine
* @subpackage Cache
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7490 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Jonathan H. Wage <jonwage@gmail.com>
*/
class Doctrine_Cache_Apc extends Doctrine_Cache_Driver
{
/**
* constructor
*
* @param array $options associative array of cache driver options
*/
public function __construct($options = array())
{
if ( ! extension_loaded('apc')) {
throw new Doctrine_Cache_Exception('The apc extension must be loaded for using this backend !');
}
parent::__construct($options);
}
/**
* Fetch a cache record from this cache driver instance
*
* @param string $id cache id
* @param boolean $testCacheValidity if set to false, the cache validity won't be tested
* @return mixed Returns either the cached data or false
*/
protected function _doFetch($id, $testCacheValidity = true)
{
return apc_fetch($id);
}
/**
* Test if a cache record exists for the passed id
*
* @param string $id cache id
* @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
*/
protected function _doContains($id)
{
$found = false;
apc_fetch($id, $found);
return $found;
}
/**
* Save a cache record directly. This method is implemented by the cache
* drivers and used in Doctrine_Cache_Driver::save()
*
* @param string $id cache id
* @param string $data data to cache
* @param int $lifeTime if != false, set a specific lifetime for this cache record (null => infinite lifeTime)
* @return boolean true if no problem
*/
protected function _doSave($id, $data, $lifeTime = false)
{
return apc_store($id, $data, $lifeTime);
}
/**
* Remove a cache record directly. This method is implemented by the cache
* drivers and used in Doctrine_Cache_Driver::delete()
*
* @param string $id cache id
* @return boolean true if no problem
*/
protected function _doDelete($id)
{
return apc_delete($id);
}
/**
* Fetch an array of all keys stored in cache
*
* @return array Returns the array of cache keys
*/
protected function _getCacheKeys()
{
$ci = apc_cache_info('user');
$keys = array();
foreach ($ci['cache_list'] as $entry) {
$keys[] = $entry['info'];
}
return $keys;
}
}