01: /**
02: * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
03: *
04: * Permission is hereby granted, free of charge, to any person obtaining a copy
05: * of this software and associated documentation files (the "Software"), to deal
06: * in the Software without restriction, including without limitation the rights
07: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
08: * copies of the Software, and to permit persons to whom the Software is
09: * 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: */package com.liferay.portal.kernel.util;
22:
23: import java.util.Comparator;
24:
25: /**
26: * <a href="KeyValuePairComparator.java.html"><b><i>View Source</i></b></a>
27: *
28: * @author Brian Wing Shun Chan
29: *
30: */
31: public class KeyValuePairComparator implements Comparator {
32:
33: public KeyValuePairComparator() {
34: this (true);
35: }
36:
37: public KeyValuePairComparator(boolean asc) {
38: this (true, asc);
39: }
40:
41: public KeyValuePairComparator(boolean byKey, boolean asc) {
42: _byKey = byKey;
43: _asc = asc;
44: }
45:
46: public int compare(Object obj1, Object obj2) {
47: KeyValuePair kvp1 = (KeyValuePair) obj1;
48: KeyValuePair kvp2 = (KeyValuePair) obj2;
49:
50: if (_byKey) {
51: String key1 = kvp1.getKey();
52: String key2 = kvp2.getKey();
53:
54: if (_asc) {
55: return key1.compareTo(key2);
56: } else {
57: return -(key1.compareTo(key2));
58: }
59: } else {
60: String value1 = kvp1.getValue();
61: String value2 = kvp2.getValue();
62:
63: if (_asc) {
64: return value1.compareTo(value2);
65: } else {
66: return -(value1.compareTo(value2));
67: }
68: }
69: }
70:
71: private boolean _byKey;
72: private boolean _asc;
73:
74: }
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