| ColumnsComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions 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.portal.tools.comparator;
24
25 import java.util.Comparator;
26 import java.util.List;
27
28 /**
29 * <a href="ColumnsComparator.java.html"><b><i>View Source</i></b></a>
30 *
31 * @author Brian Wing Shun Chan
32 *
33 */
34 public class ColumnsComparator implements Comparator<Object> {
35
36 public ColumnsComparator(String columnName) {
37 this(new String[] {columnName});
38 }
39
40 public ColumnsComparator(List<String> columnNames) {
41 this(columnNames.toArray(new String[columnNames.size()]));
42 }
43
44 public ColumnsComparator(String[] columnNames) {
45 _columnNames = columnNames;
46 }
47
48 public int compare(Object obj1, Object obj2) {
49 Object[] column1 = (Object[])obj1;
50 Object[] column2 = (Object[])obj2;
51
52 String columnName1 = (String)column1[0];
53 String columnName2 = (String)column2[0];
54
55 int x = -1;
56
57 for (int i = 0; i < _columnNames.length; i++) {
58 if (_columnNames[i].equals(columnName1)) {
59 x = i;
60
61 break;
62 }
63 }
64
65 int y = -1;
66
67 for (int i = 0; i < _columnNames.length; i++) {
68 if (_columnNames[i].equals(columnName2)) {
69 y = i;
70
71 break;
72 }
73 }
74
75 if ((x == -1) && (y > -1)) {
76 return 1;
77 }
78 else if ((x > -1) && (y == -1)) {
79 return -1;
80 }
81 else if ((x > -1) && (y > -1)) {
82 if (x < y) {
83 return -1;
84 }
85 else if (x > y) {
86 return 1;
87 }
88 }
89
90 return 0;
91 }
92
93 private String[] _columnNames;
94
95 }