1 package fr.ifremer.quadrige3.ui.core.dto;
2
3 /*
4 * #%L
5 * Dali :: Core
6 * $Id:$
7 * $HeadURL:$
8 * %%
9 * Copyright (C) 2014 - 2015 Ifremer
10 * %%
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Affero General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU Affero General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 * #L%
24 */
25
26 import java.util.Comparator;
27
28 /**
29 * Dali entity comparator that treats Null entity as greater than all others
30 *
31 * @author Ludovic Pecquot <ludovic.pecquot@e-is.pro>
32 */
33 public class QuadrigeBeanComparator implements Comparator<QuadrigeBean> {
34
35 /** {@inheritDoc} */
36 @Override
37 public int compare(QuadrigeBean left, QuadrigeBean right) {
38 if (left == right) {
39 return 0;
40 }
41 if (left == null) {
42 return 1;
43 }
44 if (right == null) {
45 return -1;
46 }
47 if ((left instanceof QuadrigeAbstractBean) && (right instanceof QuadrigeAbstractBean)) {
48 return ((QuadrigeAbstractBean) left).compareTo(right);
49 } else {
50 return 0;
51 }
52 }
53
54 }