function start_refresh()
{
global $course_doc;
global $refresh;
$xset_result = BoltXsetResult::lookup_id($refresh->xset_result_id);
if (!$xset_result) {
error_page("Exercise set result not found");
}
$view = BoltView::lookup_id($xset_result->view_id);
if (!$view) {
error_page("view not found");
}
$iter = new BoltIter($course_doc);
$iter->decode_state($view->state);
$iter->at();
$xset = $iter->xset;
if (!$xset || $xset->name != $xset_result->name) {
error_page("missing exercise set");
}
$xset->restart($iter);
$iter->at();
$mode = default_mode($iter->item);
$view_id = create_view($iter, $mode, 0);
show_item($iter, $view_id, 0, $mode);
}
function clear()
{
global $course_id;
admin_page_head("Deleting course data");
BoltEnrollment::delete_aux("course_id = {$course_id}");
BoltView::delete_aux("course_id = {$course_id}");
BoltResult::delete_aux("course_id = {$course_id}");
BoltXsetResult::delete_aux("course_id = {$course_id}");
BoltSelectFinished::delete_aux("course_id = {$course_id}");
BoltRefreshRec::delete_aux("course_id = {$course_id}");
BoltQuestion::delete_aux("course_id = {$course_id}");
echo "\n\t\tCourse data deleted.\n\t";
admin_page_tail();
}
function map_gen_uid($uid, $unit, $sb)
{
global $course, $now;
$class = get_class($unit);
switch ($class) {
case 'BoltExercise':
return map_gen_ex($uid, $unit, $sb);
case 'BoltLesson':
return map_gen_lesson($uid, $unit, $sb);
default:
$ret = false;
foreach ($unit->units as $u) {
$ret = map_gen_uid($uid, $u, $sb);
if (!$ret) {
break;
}
}
if ($ret && $class == 'BoltExerciseSet') {
$score = urand($sb->score_mean, $sb->score_dev);
BoltXsetResult::insert("(create_time, user_id, course_id, name, score) values ({$now}, {$uid}, {$course->id}, '{$unit->name}', {$score})");
}
return $ret;
}
}