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Java > Open Source Codes > com > j2biz > blogunity > util > TrackBackComparator


1 /*
2  * $Id: TrackBackComparator.java,v 1.1 2005/01/06 23:17:33 keyboardsamurai Exp $
3  * Created on 07.01.2005
4  * Last commit on $Date: 2005/01/06 23:17:33 $ by $Author: keyboardsamurai $
5  * Copyright (c) 2005 j2biz Group, http://www.j2biz.com
6  * Koeln / Duesseldorf , Germany
7  *
8  * @author Juan Antonio Agudo
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23  *
24  */
25
26 package com.j2biz.blogunity.util;
27
28 import java.io.Serializable JavaDoc;
29 import java.util.Comparator JavaDoc;
30
31 import org.apache.commons.logging.Log;
32 import org.apache.commons.logging.LogFactory;
33
34 import com.j2biz.blogunity.exception.BlogunityRuntimeException;
35 import com.j2biz.blogunity.i18n.I18N;
36 import com.j2biz.blogunity.i18n.I18NStatusFactory;
37 import com.j2biz.blogunity.pojo.Trackback;
38
39 /**
40  * @author tag Juan Antonio Agudo
41  *
42  */
43 public class TrackBackComparator implements Comparator JavaDoc, Serializable JavaDoc {
44
45     /**
46      * Comment for <code>serialVersionUID</code>
47      */
48     private static final long serialVersionUID = 3257565126692778295L;
49
50     /**
51      * Logger for this class
52      */
53     private static final Log log = LogFactory.getLog(TrackBackComparator.class);
54
55     /*
56      * (non-Javadoc)
57      *
58      * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
59      */
60     public int compare(Object JavaDoc o1, Object JavaDoc o2) {
61         if (o1 instanceof Trackback && o2 instanceof Trackback) {
62             try {
63                 Trackback track1 = (Trackback) o1;
64                 Trackback track2 = (Trackback) o2;
65
66                 return track1.getDate().compareTo(track2.getDate());
67             } catch (Exception JavaDoc e) {
68                 log.error("compare(Object, Object)", e);
69                 throw new BlogunityRuntimeException(I18NStatusFactory.create(I18N.ERRORS.UNABLE_TO_COMPARE,
70                         new String JavaDoc[] { "trackbacks" }, e));
71             }
72         }
73         return 0;
74     }
75
76 }
77
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