smartticketbd.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

/*
 * Copyright 2001, 2002, 2003 Sun Microsystems, Inc. All Rights Reserved.
 * Except for any files in PNG format (which are marked with the filename
 * extension ".png"), GIF format (which are marked with the filename
 * extension ".gif"), or JPEG format (which are marked with the filename
 * extension ".jpg"), redistribution and use in source and binary forms,
 * with or without modification, are permitted provided that the
 * following conditions are met:
 * - Redistribution of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * - Redistribution in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * You may compile, use, perform and display the following files with
 * original Java Smart Ticket Sample Application code obtained from Sun
 * Microsystems, Inc. only:
 * - files in PNG format and having the ".png" extension
 * - files in GIF format and having the ".gif" extension
 * - files in JPEG format and having the ".jpg" extension
 * You may not modify or redistribute .png, .gif, or .jpg files in any
 * form, in whole or in part, by any means without prior written
 * authorization from Sun Microsystems, Inc. and its licensors, if any.
 * Neither the name of Sun Microsystems, Inc., the 'Java Smart Ticket
 * Sample Application', 'Java', 'Java'-based names, or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or maintenance
 * of any nuclear facility.
 * $Id: SmartTicketBD.java,v 1.13 2003/03/19 22:59:32 zull Exp $
 */
package com.sun.j2me.blueprints.smartticket.server.web.midp;

import javax.ejb.*;
import javax.naming.*;
import javax.rmi.*;
import javax.servlet.*;
import java.io.*;
import java.rmi.*;
import java.util.*;
import java.net.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.account.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.movie.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.schedule.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.reservation.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.synchronizing.*;
import com.sun.j2me.blueprints.smartticket.server.ejb.show.Seat;
import com.sun.j2me.blueprints.smartticket.server.ejb.show.Seating;
import com.sun.j2me.blueprints.smartticket.server.ejb.theater.TheaterLocal;
import com.sun.j2me.blueprints.smartticket.server.ejb.rating.MovieRatingData;
import com.sun.j2me.blueprints.smartticket.shared.midp.ApplicationException;
import com.sun.j2me.blueprints.smartticket.shared.midp.IndexedResourceBundle;
import com.sun.j2me.blueprints.smartticket.shared.midp.model.*;

/**
 * This "business delegate" (see "Core J2EE Patterns" for more information on this pattern) provides an interface to the
 * application's business functionality.
 */
public class SmartTicketBD implements RemoteModel {
    public static final String EJB_REF_FACADE = "ejb/SmartTicketFacade";
    private SmartTicketFacadeLocal facade;
    private ServletContext servletContext = null;

    public SmartTicketBD(ServletContext servletContext) 
            throws ApplicationException {
        this.servletContext = servletContext;

        try {
            Context context = 
                (Context) new InitialContext().lookup("java:comp/env");

            facade = 
                ((SmartTicketFacadeLocalHome) context.lookup(EJB_REF_FACADE)).create();

            return;
        } catch (Exception e) {
            throw new ApplicationException(e);
        } 
    }

    protected void clear() {
        try {
            facade.remove();
        } catch (RemoveException re) {}

        return;
    } 

    public void login(String userName, String password) 
            throws ModelException, ApplicationException {
        System.err.println("login: " + userName + " " + password);

        try {
            facade.login(userName, password);

            return;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_USER_NOT_FOUND);
        } catch (Exception e) {
            throw new ApplicationException(e);
        } 
    } 

    public void createAccount(AccountInfo accountInfo) 
            throws ModelException, ApplicationException {
        try {
            facade.createAccount(accountInfo.getUserName(), 
                                 accountInfo.getPassword(), "", "", "00000", 
                                 "",    /* FIXME */
            accountInfo.getCreditCardNumber(), 
            accountInfo.getCreditCardHolderName(), 
            accountInfo.getCreditCardExpirationDate(), 
            "" /* accountInfo.getCreditCardType() */ /* FIXME */);

            return;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_USER_ALREADY_EXISTS);
        } catch (Exception e) {
            throw new ApplicationException(e);
        } 
    } 

    public void updateAccount(AccountInfo accountInfo) 
            throws ModelException, ApplicationException {
        try {
            facade.updateAccount(accountInfo.getUserName(), 
                                 accountInfo.getPassword(), "", "", "00000", 
                                 "",    /* FIXME */
            accountInfo.getCreditCardNumber(), 
            accountInfo.getCreditCardHolderName(), 
            accountInfo.getCreditCardExpirationDate(), 
            "" /* accountInfo.getCreditCardType() */ /* FIXME */);

            return;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_USER_NOT_LOGGED_IN);
        } catch (Exception e) {
            throw new ApplicationException(e);
        } 
    } 

    public Theater[] getTheaters(String zipCode) 
            throws ModelException, ApplicationException {
        try {
            TheaterLocal[] theaters = facade.getTheaters(zipCode);
            Theater[] _theaters = new Theater[theaters.length];

            for (int i = 0; i < _theaters.length; i++) {
                _theaters[i] = new Theater(theaters[i].getId(), 
                                           theaters[i].getName(), 
                                           theaters[i].getAddress(), 
                                           theaters[i].getZipCode());
            } 

            return _theaters;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_THEATERS_NOT_FOUND);
        } catch (Exception e) {
            e.printStackTrace(System.err);

            throw new ApplicationException(e);
        } 
    } 

    public TheaterSchedule getTheaterSchedule(String theaterKey) 
            throws ModelException, ApplicationException {
        try {
            MovieScheduleLocal[] movieSchedules = 
                facade.getMovieSchedules(theaterKey);
            TheaterSchedule _theaterSchedule = new TheaterSchedule(theaterKey, 
                    movieSchedules[0].getTheaterSchedule().getExpirationDate().getTime());
            TheaterSchedule.MovieSchedule[] _movieSchedules = 
                new TheaterSchedule.MovieSchedule[movieSchedules.length];

            for (int i = 0; i < _movieSchedules.length; i++) {
                _movieSchedules[i] = 
                    _theaterSchedule.new MovieSchedule(new Movie(movieSchedules[i].getMovieId(), movieSchedules[i].getMovie().getTitle(), movieSchedules[i].getMovie().getSummary(), movieSchedules[i].getMovie().getRating()), 
                                                       null);
            } 

            _theaterSchedule.setMovieSchedules(_movieSchedules);

            return _theaterSchedule;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_THEATER_SCHEDULE_NOT_FOUND);
        } catch (Exception e) {
            e.printStackTrace(System.err);

            throw new ApplicationException(e);
        } 
    } 

    public Movie getMovie(String movieKey) 
            throws ModelException, ApplicationException {
        try {
            MovieLocal movieLocal = facade.getMovie(movieKey);
            Movie movie = new Movie(movieLocal.getId(), 
                                    movieLocal.getTitle(), 
                                    movieLocal.getSummary(), 
                                    movieLocal.getRating());

            return movie;
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_MOVIE_NOT_FOUND);
        } catch (Exception e) {
            throw new ApplicationException(e);
        } 
    } 

    public byte[] getMoviePoster(String movieKey) 
            throws ModelException, ApplicationException {
        try {
            MovieLocal movieLocal = facade.getMovie(movieKey);
            String posterURL = movieLocal.getPosterURL();
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            InputStream in = getResourceAsStream(posterURL);
            byte[] buffer = new byte[1024];

            for (int n = 0; (n = in.read(buffer, 0, buffer.length)) >= 0; ) {
                out.write(buffer, 0, n);
            } 

            return out.toByteArray();
        } catch (SmartTicketFacadeException stfe) {
            throw new ModelException(ModelException.CAUSE_MOVIE_POSTER_NOT_FOUND);