NotificationQueue


1   /*
2    * This file is part of "SnipSnap Wiki/Weblog".
3    *
4    * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5    * All Rights Reserved.
6    *
7    * Please visit http://snipsnap.org/ for updates and contact.
8    *
9    * --LICENSE NOTICE--
10   * This program is free software; you can redistribute it and/or
11   * modify it under the terms of the GNU General Public License
12   * as published by the Free Software Foundation; either version 2
13   * of the License, or (at your option) any later version.
14   *
15   * This program is distributed in the hope that it will be useful,
16   * but WITHOUT ANY WARRANTY; without even the implied warranty of
17   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18   * GNU General Public License for more details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with this program; if not, write to the Free Software
22   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23   * --LICENSE NOTICE--
24   */
25  
26  package org.snipsnap.notification;
27  
28  import java.util.LinkedList  ;
29  import java.util.List  ;
30  
31  /**
32   * Queues notifications
33   *
34   * @author Stephan J. Schmidt
35   * @version $Id: NotificationQueue.java 645 2003-01-09 09:49:12Z stephan $
36   */
37  
38  public class NotificationQueue {
39    private List   list;
40  
41    public NotificationQueue() {
42      list = new LinkedList  ();
43    }
44  
45    public synchronized void add(String   message) {
46      list.add(message);
47    }
48  
49    public synchronized String   remove() {
50      String   message = (String  ) list.remove(0);
51      return message;
52    }
53  
54    public boolean hasItems() {
55      return !list.isEmpty();
56    }
57  }
58

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