protected function rebuildConnectionString()
    {
        foreach ($this->availableDrivers as $driverName) {
            if (array_key_exists($driverName, $this->connectionStrings)) {
                continue;
            }
            $ConnStringInterface = __NAMESPACE__.'\\ConnectionString\\'.ucfirst($driverName).'ConnectionString';
            if (class_exists($ConnStringInterface)) {
                $ConnString = new $ConnStringInterface();
                $this->registerConnectionString($ConnString, $driverName);
            }
        }
    }