| MessageCreateDateComparator.java |
1 /**
2 * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * 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 */
22
23 package com.liferay.portlet.messageboards.util.comparator;
24
25 import com.liferay.portal.kernel.util.DateUtil;
26 import com.liferay.portal.kernel.util.OrderByComparator;
27 import com.liferay.portlet.messageboards.model.MBMessage;
28
29 /**
30 * <a href="MessageCreateDateComparator.java.html"><b><i>View Source</i></b></a>
31 *
32 * @author Brian Wing Shun Chan
33 *
34 */
35 public class MessageCreateDateComparator extends OrderByComparator {
36
37 public static String ORDER_BY_ASC_1 = "createDate ASC";
38
39 public static String ORDER_BY_DESC_1 = "createDate DESC";
40
41 public static String ORDER_BY_ASC_2 = "MBMessage.createDate ASC";
42
43 public static String ORDER_BY_DESC_2 = "MBMessage.createDate DESC";
44
45 public MessageCreateDateComparator(boolean asc, boolean useTableNames) {
46 _asc = asc;
47 _useTableNames = useTableNames;
48 }
49
50 public int compare(Object obj1, Object obj2) {
51 MBMessage message1 = (MBMessage)obj1;
52 MBMessage message2 = (MBMessage)obj2;
53
54 int value = DateUtil.compareTo(
55 message1.getCreateDate(), message2.getCreateDate());
56
57 if (_asc) {
58 return value;
59 }
60 else {
61 return -value;
62 }
63 }
64
65 public String getOrderBy() {
66 if (_asc) {
67 if (_useTableNames) {
68 return ORDER_BY_ASC_2;
69 }
70 else {
71 return ORDER_BY_ASC_1;
72 }
73 }
74 else {
75 if (_useTableNames) {
76 return ORDER_BY_DESC_2;
77 }
78 else {
79 return ORDER_BY_DESC_1;
80 }
81 }
82 }
83
84 private boolean _asc;
85 private boolean _useTableNames;
86
87 }