| KeyValuePairComparator.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.util.Comparator;
23
24 /**
25 * <a href="KeyValuePairComparator.java.html"><b><i>View Source</i></b></a>
26 *
27 * @author Brian Wing Shun Chan
28 *
29 */
30 public class KeyValuePairComparator implements Comparator<KeyValuePair> {
31
32 public KeyValuePairComparator() {
33 this(true);
34 }
35
36 public KeyValuePairComparator(boolean asc) {
37 this(true, asc);
38 }
39
40 public KeyValuePairComparator(boolean byKey, boolean asc) {
41 _byKey = byKey;
42 _asc = asc;
43 }
44
45 public int compare(KeyValuePair kvp1, KeyValuePair kvp2) {
46 if (_byKey) {
47 String key1 = kvp1.getKey();
48 String key2 = kvp2.getKey();
49
50 if (_asc) {
51 return key1.compareTo(key2);
52 }
53 else {
54 return -(key1.compareTo(key2));
55 }
56 }
57 else {
58 String value1 = kvp1.getValue();
59 String value2 = kvp2.getValue();
60
61 if (_asc) {
62 return value1.compareTo(value2);
63 }
64 else {
65 return -(value1.compareTo(value2));
66 }
67 }
68 }
69
70 private boolean _byKey;
71 private boolean _asc;
72
73 }