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Java > Open Source Codes > org > opencms > i18n > CmsLocaleComparator


1 /*
2  * File : $Source: /usr/local/cvs/opencms/src/org/opencms/i18n/CmsLocaleComparator.java,v $
3  * Date : $Date: 2005/06/23 11:11:24 $
4  * Version: $Revision: 1.7 $
5  *
6  * This library is part of OpenCms -
7  * the Open Source Content Mananagement System
8  *
9  * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.com)
10  *
11  * This library is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * This library is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * For further information about Alkacon Software GmbH, please see the
22  * company website: http://www.alkacon.com
23  *
24  * For further information about OpenCms, please see the
25  * project website: http://www.opencms.org
26  *
27  * You should have received a copy of the GNU Lesser General Public
28  * License along with this library; if not, write to the Free Software
29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30  */
31
32 package org.opencms.i18n;
33
34 import java.util.Comparator JavaDoc;
35 import java.util.Locale JavaDoc;
36
37 /**
38  * Simple comparator implementation for locales, that compares the String value of the locales.<p>
39  *
40  * @author Alexander Kandzior
41  *
42  * @version $Revision: 1.7 $
43  *
44  * @since 6.0.0
45  */
46 public final class CmsLocaleComparator implements Comparator JavaDoc {
47
48     /** Static locale comparator. */
49     private static final Comparator JavaDoc LOCALE_COMPARATOR = new CmsLocaleComparator();
50
51     /**
52      * Hides the public constructor.<p>
53      */
54     private CmsLocaleComparator() {
55
56         // noop
57 }
58
59     /**
60      * Returns a static instance of the locale comparator.<p>
61      *
62      * @return a static instance of the locale comparator
63      */
64     public static Comparator JavaDoc getComparator() {
65
66         return LOCALE_COMPARATOR;
67     }
68
69     /**
70      * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
71      */
72     public int compare(Object JavaDoc o1, Object JavaDoc o2) {
73
74         if ((o1 instanceof Locale JavaDoc) && (o2 instanceof Locale JavaDoc)) {
75             return o1.toString().compareTo(o2.toString());
76         }
77         return 0;
78     }
79 }
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