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 * * @throws Zend_Cache_Exception * @return int integer between 0 and 100 */ public function getFillingPercentage() { return array(); } /** * 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) { } }