1 files changed, 63 insertions, 0 deletions
diff --git a/backup/moodle2/backup_qtype_algebra_plugin.class.php b/backup/moodle2/backup_qtype_algebra_plugin.class.php
new file mode 100644
index 0000000..9e08467
--- /dev/null
+++ b/backup/moodle2/backup_qtype_algebra_plugin.class.php
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * Moodle algebra question type class.
+ *
+ * @copyright &copy; 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;
+    }
+}