01: /**
02: * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
03: *
04: * Permission is hereby granted, free of charge, to any person obtaining a copy
05: * of this software and associated documentation files (the "Software"), to deal
06: * in the Software without restriction, including without limitation the rights
07: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
08: * copies of the Software, and to permit persons to whom the Software is
09: * furnished to do so, subject to the following conditions:
10: *
11: * The above copyright notice and this permission notice shall be included in
12: * all copies or substantial portions of the Software.
13: *
14: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17: * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20: * SOFTWARE.
21: */package com.liferay.portlet.messageboards.util.comparator;
22:
23: import com.liferay.portal.kernel.util.DateUtil;
24: import com.liferay.portal.kernel.util.OrderByComparator;
25: import com.liferay.portlet.messageboards.model.MBThread;
26:
27: import java.util.Date;
28:
29: /**
30: * <a href="ThreadLastPostDateComparator.java.html"><b><i>View Source</i></b>
31: * </a>
32: *
33: * @author Brian Wing Shun Chan
34: *
35: */
36: public class ThreadLastPostDateComparator extends OrderByComparator {
37:
38: public static String ORDER_BY_ASC = "lastPostDate ASC";
39:
40: public static String ORDER_BY_DESC = "lastPostDate DESC";
41:
42: public ThreadLastPostDateComparator() {
43: this (false);
44: }
45:
46: public ThreadLastPostDateComparator(boolean asc) {
47: _asc = asc;
48: }
49:
50: public int compare(Object obj1, Object obj2) {
51: MBThread thread1 = (MBThread) obj1;
52: MBThread thread2 = (MBThread) obj2;
53:
54: Date lastPostDate1 = thread1.getLastPostDate();
55: Date lastPostDate2 = thread2.getLastPostDate();
56:
57: if ((lastPostDate1 == null) || (lastPostDate2 == null)) {
58: return 0;
59: }
60:
61: int value = DateUtil.compareTo(lastPostDate1, lastPostDate2);
62:
63: if (_asc) {
64: return value;
65: } else {
66: return -value;
67: }
68: }
69:
70: public String getOrderBy() {
71: if (_asc) {
72: return ORDER_BY_ASC;
73: } else {
74: return ORDER_BY_DESC;
75: }
76: }
77:
78: private boolean _asc;
79:
80: }
|