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Java > Open Source Codes > enterprise > lottery_annotation_web_servlet > PlayLotteryServlet


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23
24 package enterprise.lottery_annotation_web_servlet;
25
26 import java.io.IOException JavaDoc;
27 import java.util.Locale JavaDoc;
28 import java.util.ResourceBundle JavaDoc;
29
30 import javax.naming.InitialContext JavaDoc;
31 import javax.servlet.http.HttpServlet JavaDoc;
32 import javax.servlet.http.HttpServletRequest JavaDoc;
33 import javax.servlet.http.HttpServletResponse JavaDoc;
34 import javax.servlet.RequestDispatcher JavaDoc;
35 import javax.servlet.ServletException JavaDoc;
36
37 import enterprise.lottery_annotation_ejb_stateful.Lottery;
38 import enterprise.lottery_annotation_ejb_stateless.Dice;
39
40
41 public class PlayLotteryServlet extends HttpServlet JavaDoc {
42     
43     /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
44      * @param request servlet request
45      * @param response servlet response
46      */
47     protected void processRequest(HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response)
48     throws ServletException JavaDoc, IOException JavaDoc {
49         response.setContentType("text/html");
50
51     Lottery lottery;
52         Dice dice;
53         int NO_OF_DIGITS = 6;
54         ResourceBundle JavaDoc rb = ResourceBundle.getBundle("LocalStrings", Locale.getDefault());
55
56         try {
57             InitialContext JavaDoc initContext = new InitialContext JavaDoc();
58
59             lottery =
60                 (Lottery) initContext.lookup("enterprise.lottery_annotation_ejb_stateful.Lottery");
61         dice =
62                 (Dice) initContext.lookup("enterprise.lottery_annotation_ejb_stateless.Dice");
63         }
64         catch (Exception JavaDoc e) {
65             System.out.println(rb.getString("exception_creating_initial_context") +
66                 ": " + e.toString());
67             return;
68         }
69
70     lottery.setName(request.getParameter("lottery_name"));
71
72     for(int i=0; i<NO_OF_DIGITS; i++) {
73             lottery.select(dice.play());
74         }
75
76     String JavaDoc lotteryName = lottery.getName();
77         String JavaDoc lotteryNumber = lottery.getNumber();
78     String JavaDoc lotteryDate = lottery.getDate();
79
80         //set the results in the Request object
81 request.setAttribute("lottery_name", lottery.getName());
82         request.setAttribute("lottery_number", lottery.getNumber());
83         request.setAttribute("lottery_date", lottery.getDate());
84
85         // dispatch jsp for output
86 response.setContentType("text/html");
87         RequestDispatcher JavaDoc dispatcher =
88             getServletContext().getRequestDispatcher("/LotteryView.jsp");
89         dispatcher.include(request, response);
90         return;
91     }
92
93
94     /** Handles the HTTP <code>GET</code> method.
95      * @param request servlet request
96      * @param response servlet response
97      */
98     protected void doGet(HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response)
99     throws ServletException JavaDoc, IOException JavaDoc {
100         processRequest(request, response);
101     }
102     
103
104     /** Handles the HTTP <code>POST</code> method.
105      * @param request servlet request
106      * @param response servlet response
107      */
108     protected void doPost(HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response)
109     throws ServletException JavaDoc, IOException JavaDoc {
110         processRequest(request, response);
111     }
112     
113
114     /** Returns a short description of the servlet.
115      */
116     public String JavaDoc getServletInfo() {
117         ResourceBundle JavaDoc rb = ResourceBundle.getBundle("LocalStrings", Locale.getDefault());
118         return rb.getString("servlet_description");
119     }
120 }
121
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