/**
  * Кэш типов участия на кафедре
  *
  * @static
  * @return CArrayList
  */
 public static function getCacheTypes()
 {
     if (is_null(self::$_cacheTypes)) {
         self::$_cacheTypes = new CArrayList();
         foreach (CActiveRecordProvider::getAllFromTable(TABLE_TYPES)->getItems() as $item) {
             $term = new CTerm($item);
             self::$_cacheTypes->add($term->getId(), $term);
         }
     }
     return self::$_cacheTypes;
 }