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<?php
/**
* Moodle algebra question type class.
*
* @copyright © 2010 Hon Wai, Lau
* @author Hon Wai, Lau <lau65536@gmail.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License version 3
* @package questionbank
* @subpackage questiontypes
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Provides the information to backup algebra questions
*/
class backup_qtype_algebra_plugin extends backup_qtype_plugin {
/**
* Returns the qtype information to attach to question element
*/
protected function define_question_plugin_structure() {
// Define the virtual plugin element with the condition to fulfill
$plugin = $this->get_plugin_element(null, '../../qtype', 'algebra');
// Create one standard named plugin element (the visible container)
$pluginwrapper = new backup_nested_element($this->get_recommended_name());
// connect the visible container ASAP
$plugin->add_child($pluginwrapper);
// This qtype uses standard question_answers, add them here
// to the tree before any other information that will use them
$this->add_question_question_answers($pluginwrapper);
// Now create the qtype own structures
$algebravariables = new backup_nested_element('algebra_variables');
$algebravariable = new backup_nested_element('algebra_variable', array('id'), array(
'name', 'min', 'max'));
$algebra = new backup_nested_element('algebra', array('id'), array(
'compareby', 'nchecks', 'tolerance',
'disallow', 'allowedfuncs', 'answerprefix'));
// Now the own qtype tree
$pluginwrapper->add_child($algebravariables);
$algebravariables->add_child($algebravariable);
$pluginwrapper->add_child($algebra);
// set source to populate the data
$algebra->set_source_table('question_algebra', array('questionid' => backup::VAR_PARENTID));
$algebravariable->set_source_table('question_algebra_variables', array('question' => backup::VAR_PARENTID));
// don't need to annotate ids nor files
return $plugin;
}
}
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