| 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 static String[] ORDER_BY_FIELDS = {"displayDate", "version"};
40
41 public ArticleDisplayDateComparator() {
42 this(false);
43 }
44
45 public ArticleDisplayDateComparator(boolean asc) {
46 _asc = asc;
47 }
48
49 public int compare(Object obj1, Object obj2) {
50 JournalArticle article1 = (JournalArticle)obj1;
51 JournalArticle article2 = (JournalArticle)obj2;
52
53 int value = DateUtil.compareTo(
54 article1.getDisplayDate(), article2.getDisplayDate());
55
56 if (value == 0) {
57 if (article1.getVersion() < article2.getVersion()) {
58 value = -1;
59 }
60 else if (article1.getVersion() > article2.getVersion()) {
61 value = 1;
62 }
63 }
64
65 if (_asc) {
66 return value;
67 }
68 else {
69 return -value;
70 }
71 }
72
73 public String getOrderBy() {
74 if (_asc) {
75 return ORDER_BY_ASC;
76 }
77 else {
78 return ORDER_BY_DESC;
79 }
80 }
81
82 public String[] getOrderByFields() {
83 return ORDER_BY_FIELDS;
84 }
85
86 public boolean isAscending() {
87 return _asc;
88 }
89
90 private boolean _asc;
91
92 }