protected function _checkArrValuesEmpty($aData, $aKeys)
    {
        if (!is_array($aKeys) || count($aKeys) < 1) {
            return false;
        }

        foreach ($aKeys as $sKey) {
            if (isset($aData[$sKey]) && !empty($aData[$sKey])) {
                return false;
            }
        }

        return true;
    }