| ArticleVersionComparator.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.OrderByComparator;
26 import com.liferay.portlet.journal.model.JournalArticle;
27
28 /**
29 * <a href="ArticleVersionComparator.java.html"><b><i>View Source</i></b></a>
30 *
31 * @author Brian Wing Shun Chan
32 */
33 public class ArticleVersionComparator extends OrderByComparator {
34
35 public static String ORDER_BY_ASC = "version ASC";
36
37 public static String ORDER_BY_DESC = "version DESC";
38
39 public static String[] ORDER_BY_FIELDS = {"version"};
40
41 public ArticleVersionComparator() {
42 this(false);
43 }
44
45 public ArticleVersionComparator(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 = 0;
54
55 if (article1.getVersion() < article2.getVersion()) {
56 value = -1;
57 }
58 else if (article1.getVersion() > article2.getVersion()) {
59 value = 1;
60 }
61
62 if (_asc) {
63 return value;
64 }
65 else {
66 return -value;
67 }
68 }
69
70 public String getOrderBy() {
71 if (_asc) {
72 return ORDER_BY_ASC;
73 }
74 else {
75 return ORDER_BY_DESC;
76 }
77 }
78
79 public String[] getOrderByFields() {
80 return ORDER_BY_FIELDS;
81 }
82
83 public boolean isAscending() {
84 return _asc;
85 }
86
87 private boolean _asc;
88
89 }