| /* |
| * 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.samza.operators; |
| |
| import com.google.common.base.MoreObjects; |
| import java.util.Arrays; |
| import java.util.Objects; |
| |
| |
| /** |
| * A key and value pair. |
| * |
| * @param <K> type of the key |
| * @param <V> type of the value |
| */ |
| public final class KV<K, V> { |
| public final K key; |
| public final V value; |
| |
| public static <K, V> KV<K, V> of(K key, V value) { |
| return new KV<>(key, value); |
| } |
| |
| public KV(K key, V value) { |
| this.key = key; |
| this.value = value; |
| } |
| |
| public K getKey() { |
| return key; |
| } |
| |
| public V getValue() { |
| return value; |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } |
| if (!(other instanceof KV)) { |
| return false; |
| } |
| KV<?, ?> otherKv = (KV<?, ?>) other; |
| // deepEquals is used here for arrays. This impl comes from Beam. |
| return Objects.deepEquals(this.key, otherKv.key) |
| && Objects.deepEquals(this.value, otherKv.value); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Arrays.deepHashCode(new Object[] {key, value}); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .addValue(key) |
| .addValue(value) |
| .toString(); |
| } |
| } |