| ArticleDisplayDateComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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 public class ArticleDisplayDateComparator extends OrderByComparator {
36
37 public static String ORDER_BY_ASC = "displayDate ASC, version ASC";
38
39 public static String ORDER_BY_DESC = "displayDate DESC, version DESC";
40
41 public static String[] ORDER_BY_FIELDS = {"displayDate", "version"};
42
43 public ArticleDisplayDateComparator() {
44 this(false);
45 }
46
47 public ArticleDisplayDateComparator(boolean asc) {
48 _asc = asc;
49 }
50
51 public int compare(Object obj1, Object obj2) {
52 JournalArticle article1 = (JournalArticle)obj1;
53 JournalArticle article2 = (JournalArticle)obj2;
54
55 int value = DateUtil.compareTo(
56 article1.getDisplayDate(), article2.getDisplayDate());
57
58 if (value == 0) {
59 if (article1.getVersion() < article2.getVersion()) {
60 value = -1;
61 }
62 else if (article1.getVersion() > article2.getVersion()) {
63 value = 1;
64 }
65 }
66
67 if (_asc) {
68 return value;
69 }
70 else {
71 return -value;
72 }
73 }
74
75 public String getOrderBy() {
76 if (_asc) {
77 return ORDER_BY_ASC;
78 }
79 else {
80 return ORDER_BY_DESC;
81 }
82 }
83
84 public String[] getOrderByFields() {
85 return ORDER_BY_FIELDS;
86 }
87
88 public boolean isAscending() {
89 return _asc;
90 }
91
92 private boolean _asc;
93
94 }