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<?php
/*
* $Id: Array.php 6839 2009-12-01 19:19:05Z jwage $
*
* 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.org>.
*/
/**
* Array cache driver
*
* @package Doctrine
* @subpackage Cache
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.org
* @since 1.0
* @version $Revision: 6839 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Jonathan H. Wage <jonwage@gmail.com>
*/
class Doctrine_Cache_Array extends Doctrine_Cache_Driver implements Countable
{
/**
* @var array $data an array of cached data
*/
protected $data;
/**
* 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, $testCacheValidity = true)
{
if (isset($this->data[$id])) {
return $this->data[$id];
}
return false;
}
/**
* 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)
{
return isset($this->data[$id]);
}
/**
* 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)
{
$this->data[$id] = $data;
return true;
}
/**
* 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)
{
$exists = isset($this->data[$id]);
unset($this->data[$id]);
return $exists;
}
}
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