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MDL-20636 Backup and restore of Opaque questions.
This commit is contained in:
Tim Hunt
parent
515e6b97b5
commit
cd4b6c1932
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package moodlecore
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* @subpackage backup-moodle2
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* @copyright 2011 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Provides the information to backup ddwtos questions
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*
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* @copyright 2011 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class backup_qtype_opaque_plugin extends backup_qtype_plugin {
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/**
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* Returns the qtype information to attach to question element
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*/
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protected function define_question_plugin_structure() {
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// Define the virtual plugin element with the condition to fulfill
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$plugin = $this->get_plugin_element(null, '../../qtype', 'opaque');
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// Create one standard named plugin element (the visible container)
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$pluginwrapper = new backup_nested_element($this->get_recommended_name());
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// connect the visible container ASAP
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$plugin->add_child($pluginwrapper);
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// Now create the qtype own structures
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$opaque = new backup_nested_element('opaque', array('id'), array(
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'remoteid', 'remoteversion'));
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$engine = new backup_nested_element('engine', array('id'), array('name', 'passkey'));
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$server = new backup_nested_element('server', array('type'), array('url'));
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// Now the own qtype tree
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$pluginwrapper->add_child($opaque);
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$opaque->add_child($engine);
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$engine->add_child($server);
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// set source to populate the data
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$opaque->set_source_table('question_opaque', array('questionid' => backup::VAR_PARENTID));
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$engine->set_source_sql('
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SELECT e.*
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FROM {question_opaque_engines} e
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JOIN {question_opaque} qo ON qo.engineid = e.id
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WHERE qo.id = ?',
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array(backup::VAR_PARENTID));
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$server->set_source_table('question_opaque_servers', array('engineid' => backup::VAR_PARENTID));
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return $plugin;
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}
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/**
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* Returns one array with filearea => mappingname elements for the qtype
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*
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* Used by {@link get_components_and_fileareas} to know about all the qtype
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* files to be processed both in backup and restore.
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*/
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public static function get_qtype_fileareas() {
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return array(
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'correctfeedback' => 'question_created',
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'partiallycorrectfeedback' => 'question_created',
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'incorrectfeedback' => 'question_created');
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}
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}
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@ -0,0 +1,110 @@
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package moodlecore
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* @subpackage backup-moodle2
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* @copyright 2011 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->dirroot . '/question/type/opaque/locallib.php');
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/**
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* restore plugin class that provides the necessary information
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* needed to restore one ddwtos qtype plugin
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*
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* @copyright 2011 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class restore_qtype_opaque_plugin extends restore_qtype_plugin {
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protected $enginemanager = null;
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/* Overridden. See parent class for docs. */
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protected function define_question_plugin_structure() {
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return array(
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new restore_path_element('opaque', $this->get_pathfor('/opaque'), true),
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new restore_path_element('engine', $this->get_pathfor('/opaque/engine')),
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new restore_path_element('server', $this->get_pathfor('/opaque/engine/server')),
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);
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}
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/**
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* Process the qtype/opaque element
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*/
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public function process_opaque($data) {
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global $DB;
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$engine = (object) $data['engine'][0];
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$engine->questionengines = array();
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$engine->questionbanks = array();
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foreach ($data['engine'][0]['server'] as $server) {
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if ($server['type'] == 'qe') {
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$engine->questionengines[] = $server['url'];
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} else if ($server['type'] == 'qb') {
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$engine->questionbanks[] = $server['url'];
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}
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}
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if (empty($engine->questionengines)) {
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throw new coding_exception('Missing question engine URLs in an Opaque question backup.');
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}
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// Detect if the question is created or mapped
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$oldquestionid = $this->get_old_parentid('question');
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$newquestionid = $this->get_new_parentid('question');
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$questioncreated = $this->get_mappingid('question_created', $oldquestionid) ? true : false;
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// If the question has been created by restore, we need to create its question_ddwtos too
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if (!$questioncreated) {
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// New question, insert.
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$question = (object) $data;
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$question->engineid = $this->engine_manager()->find_or_create_engineid($engine);
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$question->questionid = $newquestionid;
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$DB->insert_record('question_opaque', $question);
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}
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}
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/**
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* Process the qtype/opaque/server element
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*/
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public function process_engine($data) {
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// Do nothing. All the data is processed in process_opaque.
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}
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/**
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* Process the qtype/opaque/server element
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*/
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public function process_server($data) {
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// Do nothing. All the data is processed in process_opaque.
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}
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/**
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* @return qtype_opaque_engine_manager an engine manager.
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*/
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protected function engine_manager() {
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if (is_null($this->enginemanager)) {
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$this->enginemanager = new qtype_opaque_engine_manager();
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}
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return $this->enginemanager;
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}
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}
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