}
    catch( const mysqlpp::BadQuery &exception ) {

        this->addWarningToLog( std::string( exception.what() ) + " using query: " + updateQuery.str() );
        return "invalid";

    }
    catch( const mysqlpp::Exception &exception ) {

        this->addErrorToLog( std::string( exception.what() ) + " using query: " + updateQuery.str() );
        return "invalid";

    }