| ArticleDisplayDateComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.portlet.journal.util.comparator;
21
22 import com.liferay.portal.kernel.util.DateUtil;
23 import com.liferay.portal.kernel.util.OrderByComparator;
24 import com.liferay.portlet.journal.model.JournalArticle;
25
26 /**
27 * <a href="ArticleDisplayDateComparator.java.html"><b><i>View Source</i></b>
28 * </a>
29 *
30 * @author Brian Wing Shun Chan
31 *
32 */
33 public class ArticleDisplayDateComparator extends OrderByComparator {
34
35 public static String ORDER_BY_ASC = "displayDate ASC, version ASC";
36
37 public static String ORDER_BY_DESC = "displayDate DESC, version DESC";
38
39 public ArticleDisplayDateComparator() {
40 this(false);
41 }
42
43 public ArticleDisplayDateComparator(boolean asc) {
44 _asc = asc;
45 }
46
47 public int compare(Object obj1, Object obj2) {
48 JournalArticle article1 = (JournalArticle)obj1;
49 JournalArticle article2 = (JournalArticle)obj2;
50
51 int value = DateUtil.compareTo(
52 article1.getDisplayDate(), article2.getDisplayDate());
53
54 if (value == 0) {
55 if (article1.getVersion() < article2.getVersion()) {
56 value = -1;
57 }
58 else if (article1.getVersion() > article2.getVersion()) {
59 value = 1;
60 }
61 }
62
63 if (_asc) {
64 return value;
65 }
66 else {
67 return -value;
68 }
69 }
70
71 public String getOrderBy() {
72 if (_asc) {
73 return ORDER_BY_ASC;
74 }
75 else {
76 return ORDER_BY_DESC;
77 }
78 }
79
80 private boolean _asc;
81
82 }