Eloy Lafuente
74 lines
2.3 KiB
PHP
74 lines
2.3 KiB
PHP
<?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/>.
|
|
|
|
/**
|
|
* @package moodlecore
|
|
* @subpackage backup-settings
|
|
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
|
|
/**
|
|
* This abstract class defines one backup_setting
|
|
*
|
|
* TODO: Finish phpdocs
|
|
*/
|
|
abstract class backup_setting extends base_setting implements checksumable {
|
|
|
|
// Some constants defining levels of setting
|
|
const ROOT_LEVEL = 1;
|
|
const COURSE_LEVEL = 5;
|
|
const SECTION_LEVEL = 9;
|
|
const ACTIVITY_LEVEL = 13;
|
|
|
|
protected $level; // level of the setting
|
|
|
|
public function get_level() {
|
|
return $this->level;
|
|
}
|
|
|
|
public function add_dependency($obj) {
|
|
if (! $obj instanceof backup_setting) {
|
|
throw new backup_setting_exception('dependency_is_not_backkup_setting');
|
|
}
|
|
// Check the dependency level is >= current level
|
|
if ($obj->get_level() < $this->level) {
|
|
throw new backup_setting_exception('cannot_add_upper_level_dependency');
|
|
}
|
|
parent::add_dependency($obj);
|
|
}
|
|
|
|
// checksumable interface methods
|
|
|
|
public function calculate_checksum() {
|
|
// Checksum is a simple md5 hash of name, value, level
|
|
// Not following dependencies at all. Each setting will
|
|
// calculate its own checksum
|
|
return md5($this->name . '-' . $this->value . '-' . $this->level);
|
|
}
|
|
|
|
public function is_checksum_correct($checksum) {
|
|
return $this->calculate_checksum() === $checksum;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Exception class used by all the @backup_setting stuff
|
|
*/
|
|
class backup_setting_exception extends base_setting_exception {
|
|
}
|