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moodle/cache/classes/store_interface.php
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2024-08-20 15:27:05 +08:00

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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Cache store interface.
*
* This interface defines the static methods that must be implemented by every cache store plugin.
* To ensure plugins implement this class the abstract cache_store class implements this interface.
*
* @package core
* @category cache
* @copyright 2012 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
interface cache_store_interface {
/**
* Static method to check if the store requirements are met.
*
* @return bool True if the stores software/hardware requirements have been met and it can be used. False otherwise.
*/
public static function are_requirements_met();
/**
* Static method to check if a store is usable with the given mode.
*
* @param int $mode One of cache_store::MODE_*
*/
public static function is_supported_mode($mode);
/**
* Returns the supported features as a binary flag.
*
* @param array $configuration The configuration of a store to consider specifically.
* @return int The supported features.
*/
public static function get_supported_features(array $configuration = array());
/**
* Returns the supported modes as a binary flag.
*
* @param array $configuration The configuration of a store to consider specifically.
* @return int The supported modes.
*/
public static function get_supported_modes(array $configuration = array());
/**
* Generates an instance of the cache store that can be used for testing.
*
* Returns an instance of the cache store, or false if one cannot be created.
*
* @param cache_definition $definition
* @return cache_store|false
*/
public static function initialise_test_instance(cache_definition $definition);
/**
* Generates the appropriate configuration required for unit testing.
*
* @return array Array of unit test configuration data to be used by initialise().
*/
public static function unit_test_configuration();
}