/**
  * Have we got a database?
  *
  * @return void
  * @access protected
  */
 protected static function _hasDb()
 {
     if (MiCache::$_hasDb === null) {
         MiCache::$_hasDb = file_exists(CONFIGS . 'database.php');
     }
     if (MiCache::$_hasDb) {
         return true;
     }
     return false;
 }