/**
* @return CArrayList|null
*/
public static function getAllQuestions()
{
if (!self::$_cacheQuestionsInit) {
self::$_cacheQuestionsInit = true;
foreach (CActiveRecordProvider::getAllFromTable(TABLE_EXAMINATION_QUESTIONS)->getItems() as $obj) {
$q = new CExamQuestion($obj);
self::getCacheQuestions()->add($q->getId(), $q);
}
}
return self::getCacheQuestions();
}
