| StringComparator.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.kernel.util;
21
22 import java.io.Serializable;
23
24 import java.util.Comparator;
25
26 /**
27 * <a href="StringComparator.java.html"><b><i>View Source</i></b></a>
28 *
29 * @author Brian Wing Shun Chan
30 *
31 */
32 public class StringComparator implements Comparator<String>, Serializable {
33
34 public StringComparator() {
35 this(true, false);
36 }
37
38 public StringComparator(boolean asc, boolean caseSensitive) {
39 _asc = asc;
40 _caseSensitive = caseSensitive;
41 }
42
43 public int compare(String s1, String s2) {
44 if (s1 == null) {
45 s1 = StringPool.BLANK;
46 }
47
48 if (s2 == null) {
49 s2 = StringPool.BLANK;
50 }
51
52 if (!_asc) {
53 String temp = s1;
54
55 s1 = s2;
56 s2 = temp;
57 }
58
59 if (_caseSensitive) {
60 return s1.compareTo(s2);
61 }
62 else {
63 return s1.compareToIgnoreCase(s2);
64 }
65 }
66
67 private boolean _asc;
68 private boolean _caseSensitive;
69
70 }