ObjectValuePairComparator.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="ObjectValuePairComparator.java.html"><b><i>View Source</i></b></a> 26 * 27 * @author Brian Wing Shun Chan 28 * 29 */ 30 public class ObjectValuePairComparator<K, V> 31 implements Comparator<ObjectValuePair<K, V>> { 32 33 public ObjectValuePairComparator() { 34 this(true); 35 } 36 37 public ObjectValuePairComparator(boolean asc) { 38 this(true, asc); 39 } 40 41 public ObjectValuePairComparator(boolean byKey, boolean asc) { 42 _byKey = byKey; 43 _asc = asc; 44 } 45 46 public int compare(ObjectValuePair<K, V> ovp1, ObjectValuePair<K, V> ovp2) { 47 if (_byKey) { 48 Comparable key1 = (Comparable)ovp1.getKey(); 49 Comparable key2 = (Comparable)ovp2.getKey(); 50 51 if (_asc) { 52 return key1.compareTo(key2); 53 } 54 else { 55 return -(key1.compareTo(key2)); 56 } 57 } 58 else { 59 Comparable value1 = (Comparable)ovp1.getValue(); 60 Comparable value2 = (Comparable)ovp2.getValue(); 61 62 if (_asc) { 63 return value1.compareTo(value2); 64 } 65 else { 66 return -(value1.compareTo(value2)); 67 } 68 } 69 } 70 71 private boolean _byKey; 72 private boolean _asc; 73 74 }