protected function _getDefaultIndex() {
        $config = Zend_Registry::get('config');

        if (!isset($config->app->name)) {
            throw new Exception(self::ERROR_NO_APP_NAME_CONFIGURED);
        }

        $appName = str_replace(' ', '', $config->app->name);
        $appName = Garp_Util_String::camelcasedToDashed($appName);

        if (!$appName) {
            throw new Exception(self::ERROR_APP_NAME_EMPTY);
        }

        $indexName = $appName . '-' . APPLICATION_ENV;

        return $indexName;
    }