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1 package org.nextime.ion.backoffice.messageBoard;
2
3 import java.io.FileInputStream  ;
4 import java.io.FileOutputStream ;
5 import java.io.ObjectInputStream ;
6 import java.io.ObjectOutputStream ;
7 import java.io.Serializable ;
8 import java.util.Collections ;
9 import java.util.Vector ;
10
11 import javax.servlet.http.HttpServlet ;
12
13 public class MessageBoard implements Serializable {
14
15 private Vector messages;
16 private static MessageBoard instance;
17 private static String storePath;
18
19 public Vector getMessages() {
20 Collections.sort(messages);
21 return messages;
22 }
23
24 public void addMessage(Message m) {
25 messages.add(m);
26 store();
27 }
28
29 public void removeMessage(Message m) {
30 messages.remove(m);
31 store();
32 }
33
34 private MessageBoard() {
35 messages = new Vector ();
36 }
37
38 public static MessageBoard getInstance() {
39 if (instance == null) {
40 try {
41 FileInputStream fis = new FileInputStream (storePath);
42 ObjectInputStream ois = new ObjectInputStream (fis);
43 instance = (MessageBoard) ois.readObject();
44 } catch (Exception e) {
45 instance = new MessageBoard();
46 e.printStackTrace();
47 }
48 }
49 return instance;
50 }
51
52 protected static void init(HttpServlet servlet) {
53 storePath =
54 servlet.getServletContext().getRealPath(
55 "/WEB-INF/messageBoard/store");
56 }
57
58 private void store() {
59 try {
60 FileOutputStream fos = new FileOutputStream (storePath);
61 ObjectOutputStream oos = new ObjectOutputStream (fos);
62 oos.writeObject(this);
63 } catch (Exception e) {
64 e.printStackTrace();
65 }
66 }
67
68 }
69 |
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