public static bool insertObj(object obj)
        {
            OracleConnection conn = pool.fetchConnection();
            bool             res  = OracleHelper.InsertObject(conn, obj);

            pool.releaseConnection(conn);
            return(res);
        }
        public TFlightTime Search(string f_id)
        {
            DBConnectionPool pool = new DBConnectionPool(10);
            OracleConnection conn = pool.fetchConnection();


            string      sql    = "select * from FLIGHTIME where F_ID='" + f_id + "'";
            TFlightTime flight = new TFlightTime();

            OracleCommand cmd = new OracleCommand();

            OracleHelper.PrepareCommand(cmd, conn, null, sql, null);

            OracleDataReader objReader = null;

            objReader = cmd.ExecuteReader();


            while (objReader.Read())
            {
                flight.f_id            = objReader[0].ToString();
                flight.t_airport       = objReader[1].ToString();
                flight.t_terminal      = objReader["t_terminal"].ToString();
                flight.ex_takeoff_time = objReader["ex_takeoff_time"].ToString();
                flight.ex_land_time    = objReader["ex_land_time"].ToString();
                flight.re_land_time    = null;
                flight.re_takeoff_time = null;
                flight.l_airport       = objReader["l_airport"].ToString();
                flight.l_termnal       = objReader["l_termnal"].ToString();
            }
            return(flight);
        }