smartticketservlet.java

这个范例程序演示了利用j2me技术开发无线服务器支持的应用。这是一个电影票订购程序

        return;
    } 

    private void getTheaters(SmartTicketBD smartTicketBD, 
                             DataInputStream call, 
                             DataOutputStream result) throws IOException, 
                             ModelException, ApplicationException {
        String zipCode = call.readUTF();
        Theater[] theaters = smartTicketBD.getTheaters(zipCode);

        result.writeInt(theaters.length);

        for (int i = 0; i < theaters.length; i++) {
            theaters[i].serialize(result);
        } 

        return;
    } 

    private void getTheaterSchedule(SmartTicketBD smartTicketBD, 
                                    DataInputStream call, 
                                    DataOutputStream result) throws IOException, 
                                    ModelException, ApplicationException {
        String theaterKey = call.readUTF();
        TheaterSchedule theaterSchedule = 
            smartTicketBD.getTheaterSchedule(theaterKey);

        theaterSchedule.serialize(result, true);

        return;
    } 

    private void getMovie(SmartTicketBD smartTicketBD, DataInputStream call, 
                          DataOutputStream result) throws IOException, 
                          ModelException, ApplicationException {
        String movieKey = call.readUTF();
        Movie movie = smartTicketBD.getMovie(movieKey);

        movie.serialize(result);

        return;
    } 

    private void getMoviePoster(SmartTicketBD smartTicketBD, 
                                DataInputStream call, 
                                DataOutputStream result) throws IOException, 
                                ModelException, ApplicationException {
        String movieKey = call.readUTF();
        byte[] poster = smartTicketBD.getMoviePoster(movieKey);

        result.writeInt(poster.length);
        result.write(poster, 0, poster.length);

        return;
    } 

    private void getMovieShowtimes(SmartTicketBD smartTicketBD, 
                                   DataInputStream call, 
                                   DataOutputStream result) throws IOException, 
                                   ModelException, ApplicationException {
        String theaterKey = call.readUTF();
        String movieKey = call.readUTF();
        int[][] showtimes = smartTicketBD.getMovieShowTimes(theaterKey, 
                movieKey);

        TheaterSchedule.serializeShowTimes(showtimes, result);

        return;
    } 

    private void getSeatingPlan(SmartTicketBD smartTicketBD, 
                                DataInputStream call, 
                                DataOutputStream result) throws IOException, 
                                ModelException, ApplicationException {
        String theaterKey = call.readUTF();
        String movieKey = call.readUTF();
        int[] showtime = new int[3];

        showtime[0] = call.readInt();
        showtime[1] = call.readInt();
        showtime[2] = call.readInt();

        SeatingPlan seatingPlan = smartTicketBD.getSeatingPlan(theaterKey, 
                movieKey, showtime);

        seatingPlan.serialize(result);

        return;
    } 

    private void reserveSeats(SmartTicketBD smartTicketBD, 
                              DataInputStream call, 
                              DataOutputStream result) throws IOException, 
                              ModelException, ApplicationException {
        String theaterKey = call.readUTF();
        String movieKey = call.readUTF();
        int[] showtime = new int[3];

        showtime[0] = call.readInt();
        showtime[1] = call.readInt();
        showtime[2] = call.readInt();

        SeatingPlan.Seat[] seats = new SeatingPlan.Seat[call.readInt()];

        for (int i = 0; i < seats.length; i++) {
            seats[i] = SeatingPlan.Seat.deserialize(call);
        } 

        Reservation reservation = smartTicketBD.reserveSeats(theaterKey, 
                movieKey, showtime, seats);

        reservation.serialize(result);

        return;
    } 

    private void purchaseTickets(SmartTicketBD smartTicketBD, 
                                 DataInputStream call, 
                                 DataOutputStream result) throws IOException, 
                                 ModelException, ApplicationException {
        String reservationId = call.readUTF();

        smartTicketBD.purchaseTickets(reservationId);

        return;
    } 

    private void cancelSeatReservation(SmartTicketBD smartTicketBD, 
                                       DataInputStream call, 
                                       DataOutputStream result) throws IOException, 
                                       ModelException, ApplicationException {
        String reservationId = call.readUTF();

        smartTicketBD.cancelSeatReservation(reservationId);

        return;
    } 

    private void getLocales(SmartTicketBD smartTicketBD, 
                            DataInputStream call, 
                            DataOutputStream result) throws IOException, 
                            ModelException, ApplicationException {
        String[] locales = smartTicketBD.getLocales();

        result.writeInt(locales.length);

        for (int i = 0; i < locales.length; i++) {
            result.writeUTF(locales[i]);
        } 

        return;
    } 

    private void getResourceBundle(SmartTicketBD smartTicketBD, 
                                   DataInputStream call, 
                                   DataOutputStream result) throws IOException, 
                                   ModelException, ApplicationException {
        String baseName = call.readUTF();
        String locale = call.readUTF();
        IndexedResourceBundle bundle = 
            smartTicketBD.getResourceBundle(baseName, locale);

        bundle.serialize(result);

        return;
    } 

    public void initiateSynchronization(SmartTicketBD smartTicketBD, 
                                        DataInputStream call, 
                                        DataOutputStream result) throws IOException, 
                                        ModelException, ApplicationException {
        SyncAnchor syncAnchor = SyncAnchor.deserialize(call);
        long clientTime = call.readLong();

        syncAnchor = smartTicketBD.initiateSynchronization(syncAnchor, 
                clientTime);

        syncAnchor.serialize(result);

        return;
    } 

    public void synchronizeMovieRatings(SmartTicketBD smartTicketBD, 
                                        DataInputStream call, 
                                        DataOutputStream result) throws IOException, 
                                        ModelException, ApplicationException {
        int conflictResolutionStrategyId = call.readInt();
        MovieRating[] changedMovieRatings = new MovieRating[call.readInt()];

        for (int i = 0; i < changedMovieRatings.length; i++) {
            changedMovieRatings[i] = MovieRating.deserialize(call);
        } 

        MovieRating[] updatedMovieRatings = 
            smartTicketBD.synchronizeMovieRatings(changedMovieRatings, 
                                                  conflictResolutionStrategyId);

        if (updatedMovieRatings != null) {
            result.writeInt(updatedMovieRatings.length);

            for (int i = 0; i < updatedMovieRatings.length; i++) {
                updatedMovieRatings[i].serialize(result);
            } 
        } else {
            result.writeInt(0);
        } 

        return;
    } 

    public void commitMovieRatings(SmartTicketBD smartTicketBD, 
                                   DataInputStream call, 
                                   DataOutputStream result) throws IOException, 
                                   ModelException, ApplicationException {
        MovieRating[] resolvedMovieRatings = new MovieRating[call.readInt()];

        for (int i = 0; i < resolvedMovieRatings.length; i++) {
            resolvedMovieRatings[i] = MovieRating.deserialize(call);
        } 

        MovieRating[] updatedMovieRatings = 
            smartTicketBD.commitMovieRatings(resolvedMovieRatings);

        if (updatedMovieRatings != null) {
            result.writeInt(updatedMovieRatings.length);

            for (int i = 0; i < updatedMovieRatings.length; i++) {
                updatedMovieRatings[i].serialize(result);
            } 
        } else {
            result.writeInt(0);
        } 

        return;
    } 

    /**
     * @link dependency
     */
    /* # SmartTicketBD lnkSmartTicketBD; */
}