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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/>.
/**
* Define all the backup steps that will be used by the backup_book_activity_task
*
* @package mod_book
* @copyright 2010 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die;
/**
* Structure step to backup one book activity
*/
class backup_book_activity_structure_step extends backup_activity_structure_step {
protected function define_structure() {
// Define each element separated.
$book = new backup_nested_element('book', array('id'), array(
'name', 'intro', 'introformat', 'numbering', 'navstyle',
'customtitles', 'timecreated', 'timemodified'));
$chapters = new backup_nested_element('chapters');
$chapter = new backup_nested_element('chapter', array('id'), array(
'pagenum', 'subchapter', 'title', 'content', 'contentformat',
'hidden', 'timemcreated', 'timemodified', 'importsrc'));
$tags = new backup_nested_element('chaptertags');
$tag = new backup_nested_element('tag', array('id'), array('itemid', 'rawname'));
$book->add_child($chapters);
$chapters->add_child($chapter);
// Define sources
$book->set_source_table('book', array('id' => backup::VAR_ACTIVITYID));
$chapter->set_source_table('book_chapters', array('bookid' => backup::VAR_PARENTID));
// Define file annotations
$book->annotate_files('mod_book', 'intro', null); // This file area hasn't itemid
$chapter->annotate_files('mod_book', 'chapter', 'id');
$book->add_child($tags);
$tags->add_child($tag);
// All these source definitions only happen if we are including user info.
if (core_tag_tag::is_enabled('mod_book', 'book_chapters')) {
$tag->set_source_sql('SELECT t.id, ti.itemid, t.rawname
FROM {tag} t
JOIN {tag_instance} ti ON ti.tagid = t.id
WHERE ti.itemtype = ?
AND ti.component = ?
AND ti.contextid = ?', array(
backup_helper::is_sqlparam('book_chapters'),
backup_helper::is_sqlparam('mod_book'),
backup::VAR_CONTEXTID));
}
// Return the root element (book), wrapped into standard activity structure
return $this->prepare_activity_structure($book);
}
}