| KeyValuePairComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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.util.Comparator;
26
27 /**
28 * <a href="KeyValuePairComparator.java.html"><b><i>View Source</i></b></a>
29 *
30 * @author Brian Wing Shun Chan
31 */
32 public class KeyValuePairComparator implements Comparator<KeyValuePair> {
33
34 public KeyValuePairComparator() {
35 this(true);
36 }
37
38 public KeyValuePairComparator(boolean asc) {
39 this(true, asc);
40 }
41
42 public KeyValuePairComparator(boolean byKey, boolean asc) {
43 _byKey = byKey;
44 _asc = asc;
45 }
46
47 public int compare(KeyValuePair kvp1, KeyValuePair kvp2) {
48 if (_byKey) {
49 String key1 = kvp1.getKey();
50 String key2 = kvp2.getKey();
51
52 if (_asc) {
53 return key1.compareTo(key2);
54 }
55 else {
56 return -(key1.compareTo(key2));
57 }
58 }
59 else {
60 String value1 = kvp1.getValue();
61 String value2 = kvp2.getValue();
62
63 if (_asc) {
64 return value1.compareTo(value2);
65 }
66 else {
67 return -(value1.compareTo(value2));
68 }
69 }
70 }
71
72 private boolean _byKey;
73 private boolean _asc;
74
75 }