| ColumnsComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.portal.tools.comparator;
21
22 import java.util.Comparator;
23 import java.util.List;
24
25 /**
26 * <a href="ColumnsComparator.java.html"><b><i>View Source</i></b></a>
27 *
28 * @author Brian Wing Shun Chan
29 *
30 */
31 public class ColumnsComparator implements Comparator<Object> {
32
33 public ColumnsComparator(String columnName) {
34 this(new String[] {columnName});
35 }
36
37 public ColumnsComparator(List<String> columnNames) {
38 this(columnNames.toArray(new String[columnNames.size()]));
39 }
40
41 public ColumnsComparator(String[] columnNames) {
42 _columnNames = columnNames;
43 }
44
45 public int compare(Object obj1, Object obj2) {
46 Object[] column1 = (Object[])obj1;
47 Object[] column2 = (Object[])obj2;
48
49 String columnName1 = (String)column1[0];
50 String columnName2 = (String)column2[0];
51
52 int x = -1;
53
54 for (int i = 0; i < _columnNames.length; i++) {
55 if (_columnNames[i].equals(columnName1)) {
56 x = i;
57
58 break;
59 }
60 }
61
62 int y = -1;
63
64 for (int i = 0; i < _columnNames.length; i++) {
65 if (_columnNames[i].equals(columnName2)) {
66 y = i;
67
68 break;
69 }
70 }
71
72 if ((x == -1) && (y > -1)) {
73 return 1;
74 }
75 else if ((x > -1) && (y == -1)) {
76 return -1;
77 }
78 else if ((x > -1) && (y > -1)) {
79 if (x < y) {
80 return -1;
81 }
82 else if (x > y) {
83 return 1;
84 }
85 }
86
87 return 0;
88 }
89
90 private String[] _columnNames;
91
92 }