| 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 */
34 public class ArticleVersionComparator extends OrderByComparator {
35
36 public static String ORDER_BY_ASC = "version ASC";
37
38 public static String ORDER_BY_DESC = "version DESC";
39
40 public static String[] ORDER_BY_FIELDS = {"version"};
41
42 public ArticleVersionComparator() {
43 this(false);
44 }
45
46 public ArticleVersionComparator(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 = 0;
55
56 if (article1.getVersion() < article2.getVersion()) {
57 value = -1;
58 }
59 else if (article1.getVersion() > article2.getVersion()) {
60 value = 1;
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 public String[] getOrderByFields() {
81 return ORDER_BY_FIELDS;
82 }
83
84 public boolean isAscending() {
85 return _asc;
86 }
87
88 private boolean _asc;
89
90 }