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 }