1 /*
2 * The SmartWeb Framework
3 * Copyright (C) 2004-2006
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 * For further informations on the SmartWeb Framework please visit
20 *
21 * http://smartweb.sourceforge.net
22 */
23
24 package net.smartlab.web.file;
25
26 import java.net.URL;
27
28 /**
29 * TODO documentation
30 * @author rlogiacco
31 * @uml.dependency supplier="net.smartlab.web.file.DirectoryFactory"
32 * @uml.dependency supplier="net.smartlab.web.file.FileFactory"
33 */
34 public class Domain extends net.smartlab.web.Domain {
35
36 /*# net.smartlab.web.registry.EntryFactory factory */
37
38 /**
39 * Stores the singleton <code>instance</code> for this class.
40 */
41 private static Domain instance = null;
42
43 private URL root;
44
45 /**
46 * Blocks class instantiation to enforce the singleton pattern.
47 */
48 private Domain(URL root) {
49 this.root = root;
50 }
51
52 /**
53 * @param root
54 * @return the singleton instance.
55 */
56 public static synchronized Domain getInstance(URL root) {
57 if (instance == null) {
58 instance = new Domain(root);
59 }
60 return instance;
61 }
62 }