diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Cache/Backend/BlackHole.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Cache/Backend/BlackHole.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,250 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: BlackHole.php 20785 2010-01-31 09:43:03Z mikaelkael $
+ */
+
+/**
+ * @see Zend_Cache_Backend_Interface
+ */
+require_once 'Zend/Cache/Backend/ExtendedInterface.php';
+
+/**
+ * @see Zend_Cache_Backend
+ */
+require_once 'Zend/Cache/Backend.php';
+
+/**
+ * @package    Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Cache_Backend_BlackHole 
+    extends Zend_Cache_Backend 
+    implements Zend_Cache_Backend_ExtendedInterface
+{
+    /**
+     * Test if a cache is available for the given id and (if yes) return it (false else)
+     *
+     * @param  string $id cache id
+     * @param  boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
+     * @return string|false cached datas
+     */
+    public function load($id, $doNotTestCacheValidity = false)
+    {
+        return false;
+    }
+
+    /**
+     * Test if a cache is available or not (for the given id)
+     *
+     * @param  string $id cache id
+     * @return mixed false (a cache is not available) or "last modified" timestamp (int) of the available cache record
+     */
+    public function test($id)
+    {
+        return false;
+    }
+
+    /**
+     * 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)
+    {
+        return true;
+    }
+
+    /**
+     * Remove a cache record
+     *
+     * @param  string $id cache id
+     * @return boolean true if no problem
+     */
+    public function remove($id)
+    {
+        return true;
+    }
+
+    /**
+     * Clean some cache records
+     *
+     * Available modes are :
+     * 'all' (default)  => remove all cache entries ($tags is not used)
+     * 'old'            => remove too old cache entries ($tags is not used)
+     * 'matchingTag'    => remove cache entries matching all given tags
+     *                     ($tags can be an array of strings or a single string)
+     * 'notMatchingTag' => remove cache entries not matching one of the given tags
+     *                     ($tags can be an array of strings or a single string)
+     * 'matchingAnyTag' => remove cache entries matching any given tags
+     *                     ($tags can be an array of strings or a single string)
+     *
+     * @param  string $mode clean mode
+     * @param  tags array $tags array of tags
+     * @return boolean true if no problem
+     */
+    public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
+    {
+        return true;
+    }
+
+    /**
+     * Return an array of stored cache ids
+     *
+     * @return array array of stored cache ids (string)
+     */
+    public function getIds()
+    {
+        return array();
+    }
+
+    /**
+     * Return an array of stored tags
+     *
+     * @return array array of stored tags (string)
+     */
+    public function getTags()
+    {
+        return array();
+    }
+
+    /**
+     * Return an array of stored cache ids which match given tags
+     *
+     * In case of multiple tags, a logical AND is made between tags
+     *
+     * @param array $tags array of tags
+     * @return array array of matching cache ids (string)
+     */
+    public function getIdsMatchingTags($tags = array())
+    {
+        return array();
+    }
+
+    /**
+     * Return an array of stored cache ids which don't match given tags
+     *
+     * In case of multiple tags, a logical OR is made between tags
+     *
+     * @param array $tags array of tags
+     * @return array array of not matching cache ids (string)
+     */
+    public function getIdsNotMatchingTags($tags = array())
+    {
+        return array();
+    }
+
+    /**
+     * Return an array of stored cache ids which match any given tags
+     *
+     * In case of multiple tags, a logical AND is made between tags
+     *
+     * @param  array $tags array of tags
+     * @return array array of any matching cache ids (string)
+     */
+    public function getIdsMatchingAnyTags($tags = array())
+    {
+        return array();
+    }
+
+    /**
+     * Return the filling percentage of the backend storage
+     *
+     * @return int integer between 0 and 100
+     * @throws Zend_Cache_Exception
+     */
+    public function getFillingPercentage()
+    {
+        return 0;
+    }
+
+    /**
+     * Return an array of metadatas for the given cache id
+     *
+     * The array must include these keys :
+     * - expire : the expire timestamp
+     * - tags : a string array of tags
+     * - mtime : timestamp of last modification time
+     *
+     * @param  string $id cache id
+     * @return array array of metadatas (false if the cache id is not found)
+     */
+    public function getMetadatas($id)
+    {
+        return false;
+    }
+
+    /**
+     * Give (if possible) an extra lifetime to the given cache id
+     *
+     * @param  string $id cache id
+     * @param  int $extraLifetime
+     * @return boolean true if ok
+     */
+    public function touch($id, $extraLifetime)
+    {
+        return false;
+    }
+
+    /**
+     * Return an associative array of capabilities (booleans) of the backend
+     *
+     * The array must include these keys :
+     * - automatic_cleaning (is automating cleaning necessary)
+     * - tags (are tags supported)
+     * - expired_read (is it possible to read expired cache records
+     *                 (for doNotTestCacheValidity option for example))
+     * - priority does the backend deal with priority when saving
+     * - infinite_lifetime (is infinite lifetime can work with this backend)
+     * - get_list (is it possible to get the list of cache ids and the complete list of tags)
+     *
+     * @return array associative of with capabilities
+     */
+    public function getCapabilities()
+    {
+        return array(
+            'automatic_cleaning' => true,
+            'tags'               => true,
+            'expired_read'       => true,
+            'priority'           => true,
+            'infinite_lifetime'  => true,
+            'get_list'           => true,
+        );
+    }
+
+    /**
+     * PUBLIC METHOD FOR UNIT TESTING ONLY !
+     *
+     * Force a cache record to expire
+     *
+     * @param string $id cache id
+     */
+    public function ___expire($id)
+    {
+    }
+}