1
2 /*
3 * SmartCrawler
4 *
5 * $Id: ProviderFactory.java,v 1.4 2005/06/27 16:37:49 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.common;
28
29 /***
30 *
31 *
32 * @author <a href="mailto:pozzad@alice.it">Davide Pozza</a>
33 * @version <tt>$Revision: 1.4 $</tt>
34 */
35 public class ProviderFactory {
36
37 private static ProviderFactory cf;
38 //private static Log log = SCLogFactory.getLog(ProviderFactory.class);
39
40 /***
41 *
42 * @return
43 */
44 public static synchronized ProviderFactory instance() {
45 if (cf == null) {
46 cf = new ProviderFactory();
47 }
48 return cf;
49 }
50 /***
51 * Creates a new instance of ProviderFactory
52 */
53 private ProviderFactory() {
54 }
55
56
57 /***
58 *
59 * @return
60 */
61 public Provider create() {
62 return ImprovedLinksProvider.instance();
63 //return LockingLinksProvider.instance();
64 //return LinksProvider.instance();
65 }
66 }