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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/>.
/**
* Class for loading/storing context level data from the DB.
*
* @package tool_dataprivacy
* @copyright 2018 David Monllao
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace tool_dataprivacy;
defined('MOODLE_INTERNAL') || die();
/**
* Class for loading/storing context level data from the DB.
*
* @copyright 2018 David Monllao
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class contextlevel extends \core\persistent {
/**
* Database table.
*/
const TABLE = 'tool_dataprivacy_ctxlevel';
/**
* Return the definition of the properties of this model.
*
* @return array
*/
protected static function define_properties() {
return array(
'contextlevel' => array(
'type' => PARAM_INT,
'description' => 'The context level.',
),
'purposeid' => array(
'type' => PARAM_INT,
'description' => 'The purpose id.',
),
'categoryid' => array(
'type' => PARAM_INT,
'description' => 'The category id.',
),
);
}
/**
* Returns an instance by contextlevel.
*
* @param mixed $contextlevel
* @param mixed $exception
* @return null
*/
public static function get_record_by_contextlevel($contextlevel, $exception = true) {
global $DB;
$cache = \cache::make('tool_dataprivacy', 'contextlevel');
if ($data = $cache->get($contextlevel)) {
return new static(0, $data);
}
if (!$record = $DB->get_record(self::TABLE, array('contextlevel' => $contextlevel))) {
if (!$exception) {
return false;
} else {
throw new \dml_missing_record_exception(self::TABLE);
}
}
return new static(0, $record);
}
/**
* Is the provided purpose used by any contextlevel?
*
* @param int $purposeid
* @return bool
*/
public static function is_purpose_used($purposeid) {
global $DB;
return $DB->record_exists(self::TABLE, array('purposeid' => $purposeid));
}
/**
* Is the provided category used by any contextlevel?
*
* @param int $categoryid
* @return bool
*/
public static function is_category_used($categoryid) {
global $DB;
return $DB->record_exists(self::TABLE, array('categoryid' => $categoryid));
}
/**
* Adds the new record to the cache.
*
* @return null
*/
protected function after_create() {
$cache = \cache::make('tool_dataprivacy', 'contextlevel');
$cache->set($this->get('contextlevel'), $this->to_record());
}
/**
* Updates the cache record.
*
* @param bool $result
* @return null
*/
protected function after_update($result) {
$cache = \cache::make('tool_dataprivacy', 'contextlevel');
$cache->set($this->get('contextlevel'), $this->to_record());
}
/**
* Removes unnecessary stuff from db.
*
* @return null
*/
protected function before_delete() {
$cache = \cache::make('tool_dataprivacy', 'contextlevel');
$cache->delete($this->get('contextlevel'));
}
}