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.journal.util.comparator;
22:
23: import com.liferay.portal.kernel.util.DateUtil;
24: import com.liferay.portal.kernel.util.OrderByComparator;
25: import com.liferay.portlet.journal.model.JournalArticle;
26:
27: /**
28: * <a href="ArticleDisplayDateComparator.java.html"><b><i>View Source</i></b>
29: * </a>
30: *
31: * @author Brian Wing Shun Chan
32: *
33: */
34: public class ArticleDisplayDateComparator extends OrderByComparator {
35:
36: public static String ORDER_BY_ASC = "displayDate ASC, version ASC";
37:
38: public static String ORDER_BY_DESC = "displayDate DESC, version DESC";
39:
40: public ArticleDisplayDateComparator() {
41: this (false);
42: }
43:
44: public ArticleDisplayDateComparator(boolean asc) {
45: _asc = asc;
46: }
47:
48: public int compare(Object obj1, Object obj2) {
49: JournalArticle article1 = (JournalArticle) obj1;
50: JournalArticle article2 = (JournalArticle) obj2;
51:
52: int value = DateUtil.compareTo(article1.getDisplayDate(),
53: article2.getDisplayDate());
54:
55: if (value == 0) {
56: if (article1.getVersion() < article2.getVersion()) {
57: value = -1;
58: } else if (article1.getVersion() > article2.getVersion()) {
59: value = 1;
60: }
61: }
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: }
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