Source code: openfuture/bugbase/model/BugReportTitleComparator.java
1 package openfuture.bugbase.model;
2 /*
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2 of the License, or (at your option) any later version.<p>
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.<p>
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA<br>
16 * http://www.gnu.org/copyleft/lesser.html
17 */
18
19 import java.util.Comparator;
20 import openfuture.bugbase.domain.BugReport;
21
22 // Configuration Management Information:
23 // -------------------------------------
24 // $Id: BugReportTitleComparator.java,v 1.3 2001/07/01 06:46:30 wreissen Exp $
25 //
26 // Version History:
27 // ----------------
28 // $Log: BugReportTitleComparator.java,v $
29 // Revision 1.3 2001/07/01 06:46:30 wreissen
30 // fixed errors in DOS/Unix-translation.
31 //
32 // Revision 1.1 2001/03/12 09:21:19 wreissen
33 // initial version.
34 //
35 //
36 // ***********************************************************************************
37 /**
38 * Compares two {@link openfuture.bugbase.domain.BugReport bug reports} by
39 * their {@link openfuture.bugbase.domain.BugReport#getTitle() title}.<p>
40 *
41 *
42 * Created: Fri Mar 09 06:40:48 2001
43 *
44 * @author <a href="mailto:wolfgang@openfuture.de">Wolfgang Reissenberger</a>
45 * @version $Revision: 1.3 $
46 */
47
48 public class BugReportTitleComparator implements Comparator {
49
50 /**
51 * Compare two objects. If <code>o1</code> and <code>o1</code> are
52 * {@link openfuture.bugbase.domain.BugReport bug reports}, their
53 * {@link openfuture.bugbase.domain.BugReport#getTitle() title} is compared.
54 *
55 * @param o1 a value of type 'Object'
56 * @param o2 a value of type 'Object'
57 * @return -1 if <code>o1</code> is smaller, 1 if <code>o1</code>
58 * is greater and 0 of <code>o1</code> is equal to
59 * <code>o2</code>.
60 */
61 public int compare(Object o1, Object o2) {
62 if (o1 instanceof BugReport && o2 instanceof BugReport) {
63
64 BugReport report1 = (BugReport)o1;
65 BugReport report2 = (BugReport)o2;
66
67 int result = compareTitle(report1.getTitle(), report2.getTitle());
68 if (result != 0) return result;
69
70 return(BugReportIdComparator.compareId(report1.getId(),
71 report2.getId()));
72 } else {
73 throw new IllegalArgumentException();
74 }
75 }
76
77 private int compareTitle(String id1, String id2) {
78
79 if (id1 == null && id2 == null) return 0;
80 if (id1 == null) return -1;
81 if (id2 == null) return 1;
82
83 return(id1.compareTo(id2));
84 }
85
86 } // BugReportTitleComparator