119 lines
3.7 KiB
PHP
119 lines
3.7 KiB
PHP
<?php
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/*
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* $Id: Memcache.php 4910 2008-09-12 08:51:56Z romanb $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.org>.
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*/
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/**
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* Memcache cache driver.
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*
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.phpdoctrine.org
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* @since 1.0
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* @version $Revision: 4910 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_ORM_Cache_MemcacheCache implements Doctrine_ORM_Cache_Cache
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{
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/**
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* @var Memcache $_memcache memcache object
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*/
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private $_memcache;
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/**
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* constructor
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*
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* @param array $options associative array of cache driver options
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*/
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public function __construct()
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{
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if ( ! extension_loaded('memcache')) {
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throw new Doctrine_Cache_Exception('In order to use Memcache driver, the memcache extension must be loaded.');
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}
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}
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/**
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* Sets the memcache instance to use.
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*
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* @param Memcache $memcache
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*/
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public function setMemcache(Memcache $memcache)
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{
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$this->_memcache = $memcache;
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}
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/**
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* Gets the memcache instance used by the cache.
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*
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* @return Memcache
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*/
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public function getMemcache()
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{
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return $this->_memcache;
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}
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/**
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* Test if a cache is available for the given id and (if yes) return it (false else).
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*
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* @param string $id cache id
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* @param boolean $testCacheValidity if set to false, the cache validity won't be tested
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* @return string cached datas (or false)
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*/
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public function fetch($id, $testCacheValidity = true)
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{
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return $this->_memcache->get($id);
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}
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/**
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* Test if a cache is available or not (for the given id)
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*
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* @param string $id cache id
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* @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
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*/
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public function contains($id)
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{
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return (bool) $this->_memcache->get($id);
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}
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/**
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* Save some string datas into a cache record
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*
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* Note : $data is always saved as a string
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*
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* @param string $data data to cache
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* @param string $id cache id
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* @param int $lifeTime if != false, set a specific lifetime for this cache record (null => infinite lifeTime)
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* @return boolean true if no problem
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*/
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public function save($id, $data, $lifeTime = false)
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{
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return $this->_memcache->set($id, $data, 0, $lifeTime);
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}
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/**
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* Remove a cache record
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*
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* @param string $id cache id
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* @return boolean true if no problem
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*/
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public function delete($id)
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{
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return $this->_memcache->delete($id);
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}
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}
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