| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.mrunit.internal.util; |
| |
| import java.util.Comparator; |
| |
| import org.apache.hadoop.mrunit.types.Pair; |
| |
| public class PairEquality<K, V> { |
| |
| private final Comparator<K> keyComparator; |
| private final Comparator<V> valueComparator; |
| |
| public PairEquality(final Comparator<K> keyComparator, |
| final Comparator<V> valueComparator) { |
| this.keyComparator = keyComparator; |
| this.valueComparator = valueComparator; |
| } |
| |
| public boolean isTrueFor(final Pair<K, V> o1, Pair<K, V> o2) { |
| return equalityOf(o1.getFirst(), o2.getFirst(), keyComparator) |
| && equalityOf(o1.getSecond(), o2.getSecond(), valueComparator); |
| } |
| |
| private <T> boolean equalityOf(final T t1, final T t2, final Comparator<T> c) { |
| if (c != null) { |
| return c.compare(t1, t2) == 0; |
| } |
| if (t1 == null && t2 == null) { |
| return true; |
| } |
| if (t1 != null && t2 == null) { |
| return false; |
| } |
| if (t1 == null && t2 != null) { |
| return false; |
| } |
| return t1.equals(t2); |
| } |
| } |