KeyValuePairComparator.java |
1 /** 2 * Copyright (c) 2000-2008 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.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 */ 33 public class KeyValuePairComparator implements Comparator<KeyValuePair> { 34 35 public KeyValuePairComparator() { 36 this(true); 37 } 38 39 public KeyValuePairComparator(boolean asc) { 40 this(true, asc); 41 } 42 43 public KeyValuePairComparator(boolean byKey, boolean asc) { 44 _byKey = byKey; 45 _asc = asc; 46 } 47 48 public int compare(KeyValuePair kvp1, KeyValuePair kvp2) { 49 if (_byKey) { 50 String key1 = kvp1.getKey(); 51 String key2 = kvp2.getKey(); 52 53 if (_asc) { 54 return key1.compareTo(key2); 55 } 56 else { 57 return -(key1.compareTo(key2)); 58 } 59 } 60 else { 61 String value1 = kvp1.getValue(); 62 String value2 = kvp2.getValue(); 63 64 if (_asc) { 65 return value1.compareTo(value2); 66 } 67 else { 68 return -(value1.compareTo(value2)); 69 } 70 } 71 } 72 73 private boolean _byKey; 74 private boolean _asc; 75 76 }