[ZF-7498]Line endings in Zend/Cache

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@17442 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Cache/Backend/ZendServer.php

@@ -1,207 +1,207 @@
-<?php
-/**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category   Zend
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- * @version    $Id$
- */
-
-
-/** @see Zend_Cache_Backend_Interface */
-require_once 'Zend/Cache/Backend/Interface.php';
-
-/** @see Zend_Cache_Backend */
-require_once 'Zend/Cache/Backend.php';
-
-
-/**
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- */
-abstract class Zend_Cache_Backend_ZendServer extends Zend_Cache_Backend implements Zend_Cache_Backend_Interface
-{
-    /**
-     * Available options
-     *
-     * =====> (string) namespace :
-     * Namespace to be used for chaching operations
-     *
-     * @var array available options
-     */
-    protected $_options = array(
-        'namespace' => 'zendframework'
-    );
-
-    /**
-     * Store data
-     *
-     * @param mixed  $data        Object to store
-     * @param string $id          Cache id
-     * @param int    $timeToLive  Time to live in seconds
-     * @throws Zend_Cache_Exception
-     */
-    abstract protected function _store($data, $id, $timeToLive);
-
-    /**
-     * Fetch data
-     *
-     * @param string $id          Cache id
-     * @throws Zend_Cache_Exception
-     */
-    abstract protected function _fetch($id);
-
-    /**
-     * Unset data
-     *
-     * @param string $id          Cache id
-     */
-    abstract protected function _unset($id);
-
-    /**
-     * Clear cache
-     */
-    abstract protected function _clear();
-
-    /**
-     * Test if a cache is available for the given id and (if yes) return it (false else)
-     *
-     * @param  string  $id                     cache id
-     * @param  boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
-     * @return string cached datas (or false)
-     */
-    public function load($id, $doNotTestCacheValidity = false)
-    {
-        $tmp = $this->_fetch($id);
-        if ($tmp !== null) {
-            return $tmp;
-        }
-        return false;
-    }
-
-    /**
-     * Test if a cache is available or not (for the given id)
-     *
-     * @param  string $id cache id
-     * @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
-     * @throws Zend_Cache_Exception
-     */
-    public function test($id)
-    {
-        $tmp = $this->_fetch('internal-metadatas---' . $id);
-        if ($tmp !== null) {
-        	if (!is_array($tmp) || !isset($tmp['mtime'])) {
-        		Zend_Cache::throwException('Cache metadata for \'' . $id . '\' id is corrupted' );
-        	}
-            return $tmp['mtime'];
-        }
-        return false;
-    }
-
-    /**
-     * Compute & return the expire time
-     *
-     * @return int expire time (unix timestamp)
-     */
-    private function _expireTime($lifetime)
-    {
-        if ($lifetime === null) {
-            return 9999999999;
-        }
-        return time() + $lifetime;
-    }
-
-    /**
-     * Save some string datas into a cache record
-     *
-     * Note : $data is always "string" (serialization is done by the
-     * core not by the backend)
-     *
-     * @param string $data datas to cache
-     * @param string $id cache id
-     * @param array $tags array of strings, the cache record will be tagged by each string entry
-     * @param int $specificLifetime if != false, set a specific lifetime for this cache record (null => infinite lifetime)
-     * @return boolean true if no problem
-     */
-    public function save($data, $id, $tags = array(), $specificLifetime = false)
-    {
-        $lifetime = $this->getLifetime($specificLifetime);
-        $metadatas = array(
-            'mtime' => time(),
-            'expire' => $this->_expireTime($lifetime),
-        );
-
-        if (count($tags) > 0) {
-            $this->_log('Zend_Cache_Backend_ZendServer::save() : tags are unsupported by the ZendServer backends');
-        }
-
-        return  $this->_store($data, $id, $lifetime) &&
-                $this->_store($metadatas, 'internal-metadatas---' . $id, $lifetime);
-    }
-
-    /**
-     * Remove a cache record
-     *
-     * @param  string $id cache id
-     * @return boolean true if no problem
-     */
-    public function remove($id)
-    {
-    	$result1 = $this->_unset($id);
-    	$result2 = $this->_unset('internal-metadatas---' . $id);
-
-        return $result1 && $result2;
-    }
-
-    /**
-     * Clean some cache records
-     *
-     * Available modes are :
-     * 'all' (default)  => remove all cache entries ($tags is not used)
-     * 'old'            => unsupported
-     * 'matchingTag'    => unsupported
-     * 'notMatchingTag' => unsupported
-     * 'matchingAnyTag' => unsupported
-     *
-     * @param  string $mode clean mode
-     * @param  array  $tags array of tags
-     * @throws Zend_Cache_Exception
-     * @return boolean true if no problem
-     */
-    public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
-    {
-        switch ($mode) {
-            case Zend_Cache::CLEANING_MODE_ALL:
-            	$this->_clear();
-                return true;
-                break;
-            case Zend_Cache::CLEANING_MODE_OLD:
-                $this->_log("Zend_Cache_Backend_ZendServer::clean() : CLEANING_MODE_OLD is unsupported by the Zend Server backends.");
-                break;
-            case Zend_Cache::CLEANING_MODE_MATCHING_TAG:
-            case Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG:
-            case Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG:
-            	$this->_clear();
-                $this->_log('Zend_Cache_Backend_ZendServer::clean() : tags are unsupported by the Zend Server backends.');
-                break;
-            default:
-                Zend_Cache::throwException('Invalid mode for clean() method');
-                break;
-        }
-    }
-}
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+
+/** @see Zend_Cache_Backend_Interface */
+require_once 'Zend/Cache/Backend/Interface.php';
+
+/** @see Zend_Cache_Backend */
+require_once 'Zend/Cache/Backend.php';
+
+
+/**
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+abstract class Zend_Cache_Backend_ZendServer extends Zend_Cache_Backend implements Zend_Cache_Backend_Interface
+{
+    /**
+     * Available options
+     *
+     * =====> (string) namespace :
+     * Namespace to be used for chaching operations
+     *
+     * @var array available options
+     */
+    protected $_options = array(
+        'namespace' => 'zendframework'
+    );
+
+    /**
+     * Store data
+     *
+     * @param mixed  $data        Object to store
+     * @param string $id          Cache id
+     * @param int    $timeToLive  Time to live in seconds
+     * @throws Zend_Cache_Exception
+     */
+    abstract protected function _store($data, $id, $timeToLive);
+
+    /**
+     * Fetch data
+     *
+     * @param string $id          Cache id
+     * @throws Zend_Cache_Exception
+     */
+    abstract protected function _fetch($id);
+
+    /**
+     * Unset data
+     *
+     * @param string $id          Cache id
+     */
+    abstract protected function _unset($id);
+
+    /**
+     * Clear cache
+     */
+    abstract protected function _clear();
+
+    /**
+     * Test if a cache is available for the given id and (if yes) return it (false else)
+     *
+     * @param  string  $id                     cache id
+     * @param  boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
+     * @return string cached datas (or false)
+     */
+    public function load($id, $doNotTestCacheValidity = false)
+    {
+        $tmp = $this->_fetch($id);
+        if ($tmp !== null) {
+            return $tmp;
+        }
+        return false;
+    }
+
+    /**
+     * Test if a cache is available or not (for the given id)
+     *
+     * @param  string $id cache id
+     * @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
+     * @throws Zend_Cache_Exception
+     */
+    public function test($id)
+    {
+        $tmp = $this->_fetch('internal-metadatas---' . $id);
+        if ($tmp !== null) {
+            if (!is_array($tmp) || !isset($tmp['mtime'])) {
+                Zend_Cache::throwException('Cache metadata for \'' . $id . '\' id is corrupted' );
+            }
+            return $tmp['mtime'];
+        }
+        return false;
+    }
+
+    /**
+     * Compute & return the expire time
+     *
+     * @return int expire time (unix timestamp)
+     */
+    private function _expireTime($lifetime)
+    {
+        if ($lifetime === null) {
+            return 9999999999;
+        }
+        return time() + $lifetime;
+    }
+
+    /**
+     * Save some string datas into a cache record
+     *
+     * Note : $data is always "string" (serialization is done by the
+     * core not by the backend)
+     *
+     * @param string $data datas to cache
+     * @param string $id cache id
+     * @param array $tags array of strings, the cache record will be tagged by each string entry
+     * @param int $specificLifetime if != false, set a specific lifetime for this cache record (null => infinite lifetime)
+     * @return boolean true if no problem
+     */
+    public function save($data, $id, $tags = array(), $specificLifetime = false)
+    {
+        $lifetime = $this->getLifetime($specificLifetime);
+        $metadatas = array(
+            'mtime' => time(),
+            'expire' => $this->_expireTime($lifetime),
+        );
+
+        if (count($tags) > 0) {
+            $this->_log('Zend_Cache_Backend_ZendServer::save() : tags are unsupported by the ZendServer backends');
+        }
+
+        return  $this->_store($data, $id, $lifetime) &&
+                $this->_store($metadatas, 'internal-metadatas---' . $id, $lifetime);
+    }
+
+    /**
+     * Remove a cache record
+     *
+     * @param  string $id cache id
+     * @return boolean true if no problem
+     */
+    public function remove($id)
+    {
+        $result1 = $this->_unset($id);
+        $result2 = $this->_unset('internal-metadatas---' . $id);
+
+        return $result1 && $result2;
+    }
+
+    /**
+     * Clean some cache records
+     *
+     * Available modes are :
+     * 'all' (default)  => remove all cache entries ($tags is not used)
+     * 'old'            => unsupported
+     * 'matchingTag'    => unsupported
+     * 'notMatchingTag' => unsupported
+     * 'matchingAnyTag' => unsupported
+     *
+     * @param  string $mode clean mode
+     * @param  array  $tags array of tags
+     * @throws Zend_Cache_Exception
+     * @return boolean true if no problem
+     */
+    public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
+    {
+        switch ($mode) {
+            case Zend_Cache::CLEANING_MODE_ALL:
+                $this->_clear();
+                return true;
+                break;
+            case Zend_Cache::CLEANING_MODE_OLD:
+                $this->_log("Zend_Cache_Backend_ZendServer::clean() : CLEANING_MODE_OLD is unsupported by the Zend Server backends.");
+                break;
+            case Zend_Cache::CLEANING_MODE_MATCHING_TAG:
+            case Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG:
+            case Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG:
+                $this->_clear();
+                $this->_log('Zend_Cache_Backend_ZendServer::clean() : tags are unsupported by the Zend Server backends.');
+                break;
+            default:
+                Zend_Cache::throwException('Invalid mode for clean() method');
+                break;
+        }
+    }
+}

library/Zend/Cache/Backend/ZendServer/Disk.php

@@ -1,100 +1,100 @@
-<?php
-/**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category   Zend
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- * @version    $Id$
- */
-
-
-/** @see Zend_Cache_Backend_Interface */
-require_once 'Zend/Cache/Backend/Interface.php';
-
-/** @see Zend_Cache_Backend_ZendServer */
-require_once 'Zend/Cache/Backend/ZendServer.php';
-
-
-/**
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- */
-class Zend_Cache_Backend_ZendServer_Disk extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
-{
-    /**
-     * Constructor
-     *
-     * @param  array $options associative array of options
-     * @throws Zend_Cache_Exception
-     */
-    public function __construct(array $options = array())
-    {
-        if (!function_exists('zend_disk_cache_store')) {
-            Zend_Cache::throwException('Zend_Cache_ZendServer_Disk backend has to be used within Zend Server environment.');
-        }
-        parent::__construct($options);
-    }
-
-	/**
-     * Store data
-     *
-     * @param mixed  $data        Object to store
-     * @param string $id          Cache id
-     * @param int    $timeToLive  Time to live in seconds
-     * @return boolean true if no problem
-     */
-    protected function _store($data, $id, $timeToLive)
-    {
-    	if (zend_disk_cache_store($this->_options['namespace'] . '::' . $id,
-    	                          $data,
-    	                          $timeToLive) === false) {
-            $this->_log('Store operation failed.');
-            return false;
-    	}
-    	return true;
-    }
-
-    /**
-     * Fetch data
-     *
-     * @param string $id          Cache id
-     */
-    protected function _fetch($id)
-    {
-    	return zend_disk_cache_fetch($this->_options['namespace'] . '::' . $id);
-    }
-
-    /**
-     * Unset data
-     *
-     * @param string $id          Cache id
-     * @return boolean true if no problem
-     */
-    protected function _unset($id)
-    {
-    	return zend_disk_cache_delete($this->_options['namespace'] . '::' . $id);
-    }
-
-    /**
-     * Clear cache
-     */
-    protected function _clear()
-    {
-    	zend_disk_cache_clear($this->_options['namespace']);
-    }
-}
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+
+/** @see Zend_Cache_Backend_Interface */
+require_once 'Zend/Cache/Backend/Interface.php';
+
+/** @see Zend_Cache_Backend_ZendServer */
+require_once 'Zend/Cache/Backend/ZendServer.php';
+
+
+/**
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Cache_Backend_ZendServer_Disk extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
+{
+    /**
+     * Constructor
+     *
+     * @param  array $options associative array of options
+     * @throws Zend_Cache_Exception
+     */
+    public function __construct(array $options = array())
+    {
+        if (!function_exists('zend_disk_cache_store')) {
+            Zend_Cache::throwException('Zend_Cache_ZendServer_Disk backend has to be used within Zend Server environment.');
+        }
+        parent::__construct($options);
+    }
+
+    /**
+     * Store data
+     *
+     * @param mixed  $data        Object to store
+     * @param string $id          Cache id
+     * @param int    $timeToLive  Time to live in seconds
+     * @return boolean true if no problem
+     */
+    protected function _store($data, $id, $timeToLive)
+    {
+        if (zend_disk_cache_store($this->_options['namespace'] . '::' . $id,
+                                  $data,
+                                  $timeToLive) === false) {
+            $this->_log('Store operation failed.');
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Fetch data
+     *
+     * @param string $id          Cache id
+     */
+    protected function _fetch($id)
+    {
+        return zend_disk_cache_fetch($this->_options['namespace'] . '::' . $id);
+    }
+
+    /**
+     * Unset data
+     *
+     * @param string $id          Cache id
+     * @return boolean true if no problem
+     */
+    protected function _unset($id)
+    {
+        return zend_disk_cache_delete($this->_options['namespace'] . '::' . $id);
+    }
+
+    /**
+     * Clear cache
+     */
+    protected function _clear()
+    {
+        zend_disk_cache_clear($this->_options['namespace']);
+    }
+}

library/Zend/Cache/Backend/ZendServer/ShMem.php

@@ -1,100 +1,100 @@
-<?php
-/**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category   Zend
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- * @version    $Id$
- */
-
-
-/** @see Zend_Cache_Backend_Interface */
-require_once 'Zend/Cache/Backend/Interface.php';
-
-/** @see Zend_Cache_Backend_ZendServer */
-require_once 'Zend/Cache/Backend/ZendServer.php';
-
-
-/**
- * @package    Zend_Cache
- * @subpackage Zend_Cache_Backend
- * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- */
-class Zend_Cache_Backend_ZendServer_ShMem extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
-{
-    /**
-     * Constructor
-     *
-     * @param  array $options associative array of options
-     * @throws Zend_Cache_Exception
-     */
-    public function __construct(array $options = array())
-    {
-        if (!function_exists('zend_shm_cache_store')) {
-            Zend_Cache::throwException('Zend_Cache_ZendServer_ShMem backend has to be used within Zend Server environment.');
-        }
-        parent::__construct($options);
-    }
-
-    /**
-     * Store data
-     *
-     * @param mixed  $data        Object to store
-     * @param string $id          Cache id
-     * @param int    $timeToLive  Time to live in seconds
-     *
-     */
-    protected function _store($data, $id, $timeToLive)
-    {
-        if (zend_shm_cache_store($this->_options['namespace'] . '::' . $id,
-                                  $data,
-                                  $timeToLive) === false) {
-            $this->_log('Store operation failed.');
-            return false;
-        }
-        return true;
-    }
-
-    /**
-     * Fetch data
-     *
-     * @param string $id          Cache id
-     */
-    protected function _fetch($id)
-    {
-        return zend_shm_cache_fetch($this->_options['namespace'] . '::' . $id);
-    }
-
-    /**
-     * Unset data
-     *
-     * @param string $id          Cache id
-     * @return boolean true if no problem
-     */
-    protected function _unset($id)
-    {
-        return zend_shm_cache_delete($this->_options['namespace'] . '::' . $id);
-    }
-
-    /**
-     * Clear cache
-     */
-    protected function _clear()
-    {
-        zend_shm_cache_clear($this->_options['namespace']);
-    }
-}
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+
+/** @see Zend_Cache_Backend_Interface */
+require_once 'Zend/Cache/Backend/Interface.php';
+
+/** @see Zend_Cache_Backend_ZendServer */
+require_once 'Zend/Cache/Backend/ZendServer.php';
+
+
+/**
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Cache_Backend_ZendServer_ShMem extends Zend_Cache_Backend_ZendServer implements Zend_Cache_Backend_Interface
+{
+    /**
+     * Constructor
+     *
+     * @param  array $options associative array of options
+     * @throws Zend_Cache_Exception
+     */
+    public function __construct(array $options = array())
+    {
+        if (!function_exists('zend_shm_cache_store')) {
+            Zend_Cache::throwException('Zend_Cache_ZendServer_ShMem backend has to be used within Zend Server environment.');
+        }
+        parent::__construct($options);
+    }
+
+    /**
+     * Store data
+     *
+     * @param mixed  $data        Object to store
+     * @param string $id          Cache id
+     * @param int    $timeToLive  Time to live in seconds
+     *
+     */
+    protected function _store($data, $id, $timeToLive)
+    {
+        if (zend_shm_cache_store($this->_options['namespace'] . '::' . $id,
+                                  $data,
+                                  $timeToLive) === false) {
+            $this->_log('Store operation failed.');
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Fetch data
+     *
+     * @param string $id          Cache id
+     */
+    protected function _fetch($id)
+    {
+        return zend_shm_cache_fetch($this->_options['namespace'] . '::' . $id);
+    }
+
+    /**
+     * Unset data
+     *
+     * @param string $id          Cache id
+     * @return boolean true if no problem
+     */
+    protected function _unset($id)
+    {
+        return zend_shm_cache_delete($this->_options['namespace'] . '::' . $id);
+    }
+
+    /**
+     * Clear cache
+     */
+    protected function _clear()
+    {
+        zend_shm_cache_clear($this->_options['namespace']);
+    }
+}