| ArticleDisplayDateComparator.java |
1 /**
2 * Copyright (c) 2000-2009 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.journal.util.comparator;
24
25 import com.liferay.portal.kernel.util.DateUtil;
26 import com.liferay.portal.kernel.util.OrderByComparator;
27 import com.liferay.portlet.journal.model.JournalArticle;
28
29 /**
30 * <a href="ArticleDisplayDateComparator.java.html"><b><i>View Source</i></b>
31 * </a>
32 *
33 * @author Brian Wing Shun Chan
34 *
35 */
36 public class ArticleDisplayDateComparator extends OrderByComparator {
37
38 public static String ORDER_BY_ASC = "displayDate ASC, version ASC";
39
40 public static String ORDER_BY_DESC = "displayDate DESC, version DESC";
41
42 public ArticleDisplayDateComparator() {
43 this(false);
44 }
45
46 public ArticleDisplayDateComparator(boolean asc) {
47 _asc = asc;
48 }
49
50 public int compare(Object obj1, Object obj2) {
51 JournalArticle article1 = (JournalArticle)obj1;
52 JournalArticle article2 = (JournalArticle)obj2;
53
54 int value = DateUtil.compareTo(
55 article1.getDisplayDate(), article2.getDisplayDate());
56
57 if (value == 0) {
58 if (article1.getVersion() < article2.getVersion()) {
59 value = -1;
60 }
61 else if (article1.getVersion() > article2.getVersion()) {
62 value = 1;
63 }
64 }
65
66 if (_asc) {
67 return value;
68 }
69 else {
70 return -value;
71 }
72 }
73
74 public String getOrderBy() {
75 if (_asc) {
76 return ORDER_BY_ASC;
77 }
78 else {
79 return ORDER_BY_DESC;
80 }
81 }
82
83 private boolean _asc;
84
85 }