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+<?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) 2005-2015 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
+ */
+
+/**
+ * @package Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+interface Zend_Cache_Backend_ExtendedInterface extends Zend_Cache_Backend_Interface
+{
+
+ /**
+ * Return an array of stored cache ids
+ *
+ * @return array array of stored cache ids (string)
+ */
+ public function getIds();
+
+ /**
+ * Return an array of stored tags
+ *
+ * @return array array of stored tags (string)
+ */
+ public function getTags();
+
+ /**
+ * 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 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 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 the filling percentage of the backend storage
+ *
+ * @return int integer between 0 and 100
+ */
+ public function getFillingPercentage();
+
+ /**
+ * 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);
+
+ /**
+ * 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 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();
+
+}