| StringComparator.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.kernel.util;
24
25 import java.io.Serializable;
26
27 import java.util.Comparator;
28
29 /**
30 * <a href="StringComparator.java.html"><b><i>View Source</i></b></a>
31 *
32 * @author Brian Wing Shun Chan
33 *
34 */
35 public class StringComparator implements Comparator<String>, Serializable {
36
37 public StringComparator() {
38 this(true, false);
39 }
40
41 public StringComparator(boolean asc, boolean caseSensitive) {
42 _asc = asc;
43 _caseSensitive = caseSensitive;
44 }
45
46 public int compare(String s1, String s2) {
47 if (s1 == null) {
48 s1 = StringPool.BLANK;
49 }
50
51 if (s2 == null) {
52 s2 = StringPool.BLANK;
53 }
54
55 if (!_asc) {
56 String temp = s1;
57
58 s1 = s2;
59 s2 = temp;
60 }
61
62 if (_caseSensitive) {
63 return s1.compareTo(s2);
64 }
65 else {
66 return s1.compareToIgnoreCase(s2);
67 }
68 }
69
70 private boolean _asc;
71 private boolean _caseSensitive;
72
73 }