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.MBMessage;
26:
27: /**
28: * <a href="MessageCreateDateComparator.java.html"><b><i>View Source</i></b></a>
29: *
30: * @author Brian Wing Shun Chan
31: *
32: */
33: public class MessageCreateDateComparator extends OrderByComparator {
34:
35: public static String ORDER_BY_ASC_1 = "createDate ASC";
36:
37: public static String ORDER_BY_DESC_1 = "createDate DESC";
38:
39: public static String ORDER_BY_ASC_2 = "MBMessage.createDate ASC";
40:
41: public static String ORDER_BY_DESC_2 = "MBMessage.createDate DESC";
42:
43: public MessageCreateDateComparator(boolean asc,
44: boolean useTableNames) {
45: _asc = asc;
46: _useTableNames = useTableNames;
47: }
48:
49: public int compare(Object obj1, Object obj2) {
50: MBMessage message1 = (MBMessage) obj1;
51: MBMessage message2 = (MBMessage) obj2;
52:
53: int value = DateUtil.compareTo(message1.getCreateDate(),
54: message2.getCreateDate());
55:
56: if (_asc) {
57: return value;
58: } else {
59: return -value;
60: }
61: }
62:
63: public String getOrderBy() {
64: if (_asc) {
65: if (_useTableNames) {
66: return ORDER_BY_ASC_2;
67: } else {
68: return ORDER_BY_ASC_1;
69: }
70: } else {
71: if (_useTableNames) {
72: return ORDER_BY_DESC_2;
73: } else {
74: return ORDER_BY_DESC_1;
75: }
76: }
77: }
78:
79: private boolean _asc;
80: private boolean _useTableNames;
81:
82: }
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