1
2 /*
3 * SmartCrawler
4 *
5 * $Id: CustomCallsQueue.java,v 1.2 2005/07/08 12:09:34 vincool Exp $
6 * Copyright 2005 Davide Pozza
7 *
8 * This program is free software; you can redistribute it
9 * and/or modify it under the terms of the GNU General Public
10 * License as published by the Free Software Foundation;
11 * either version 2 of the License, or (at your option) any
12 * later version.
13 *
14 * This program is distributed in the hope that it will be
15 * useful, but WITHOUT ANY WARRANTY; without even the implied
16 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
17 * PURPOSE. See the GNU General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the Free
22 * Software Foundation, Inc., 59 Temple Place, Suite 330,
23 * Boston, MA 02111-1307 USA
24 *
25 */
26
27 package org.smartcrawler.retriever;
28
29 import org.smartcrawler.common.SimpleQueue;
30
31 /***
32 *
33 *
34 * @author <a href="mailto:pozzad@alice.it">Davide Pozza</a>
35 * @version <tt>$Revision: 1.2 $</tt>
36 */
37 public class CustomCallsQueue extends SimpleQueue {
38
39 private static CustomCallsQueue ccs = null;
40
41
42 /***
43 * Creates a new instance of CustomCallsStack.
44 */
45 private CustomCallsQueue() {
46 super();
47 }
48
49 /***
50 *
51 * @return The CustomCallsQueue instance
52 */
53 public synchronized static CustomCallsQueue instance() {
54 if (ccs == null){
55 ccs = new CustomCallsQueue();
56 }
57 return ccs;
58 }
59 }