| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| CompareUtil |
|
| 2.3333333333333335;2.333 |
| 1 | /* | |
| 2 | * $Id: CompareUtil.java 787720 2009-06-23 15:39:21Z apetrelli $ | |
| 3 | * | |
| 4 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 5 | * or more contributor license agreements. See the NOTICE file | |
| 6 | * distributed with this work for additional information | |
| 7 | * regarding copyright ownership. The ASF licenses this file | |
| 8 | * to you under the Apache License, Version 2.0 (the | |
| 9 | * "License"); you may not use this file except in compliance | |
| 10 | * with the License. You may obtain a copy of the License at | |
| 11 | * | |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 13 | * | |
| 14 | * Unless required by applicable law or agreed to in writing, | |
| 15 | * software distributed under the License is distributed on an | |
| 16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 17 | * KIND, either express or implied. See the License for the | |
| 18 | * specific language governing permissions and limitations | |
| 19 | * under the License. | |
| 20 | */ | |
| 21 | ||
| 22 | package org.apache.tiles; | |
| 23 | ||
| 24 | /** | |
| 25 | * Utilities to work with comparation between objects. | |
| 26 | * | |
| 27 | * @version $Rev: 787720 $ $Date: 2009-06-24 01:39:21 +1000 (Wed, 24 Jun 2009) $ | |
| 28 | * @since 2.2.0 | |
| 29 | */ | |
| 30 | public final class CompareUtil { | |
| 31 | ||
| 32 | /** | |
| 33 | * Private constructor to avoid instantiation. | |
| 34 | */ | |
| 35 | 0 | private CompareUtil() { } |
| 36 | ||
| 37 | /** | |
| 38 | * Checks if two objects (eventually null) are the same. They are considered the same | |
| 39 | * even if they are both null. | |
| 40 | * | |
| 41 | * @param obj1 The first object to check. | |
| 42 | * @param obj2 The second object to check. | |
| 43 | * @return <code>true</code> if the objects are the same. | |
| 44 | * @since 2.2.0 | |
| 45 | */ | |
| 46 | public static boolean nullSafeEquals(Object obj1, Object obj2) { | |
| 47 | 233 | if (obj1 != null) { |
| 48 | 101 | return obj1.equals(obj2); |
| 49 | } | |
| 50 | 132 | return obj2 == null; |
| 51 | } | |
| 52 | ||
| 53 | /** | |
| 54 | * Returns <code>0</code> if the object is null, the hash code of the object | |
| 55 | * otherwise. | |
| 56 | * | |
| 57 | * @param obj The object from which the hash code must be calculated.. | |
| 58 | * @return The hash code. | |
| 59 | * @since 2.2.0 | |
| 60 | */ | |
| 61 | public static int nullSafeHashCode(Object obj) { | |
| 62 | 98 | if (obj != null) { |
| 63 | 42 | return obj.hashCode(); |
| 64 | } | |
| 65 | 56 | return 0; |
| 66 | } | |
| 67 | } |