| /* |
| * 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 |
| * |
| * https://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.avro.util; |
| |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.function.Function; |
| |
| public class MapUtil { |
| |
| private MapUtil() { |
| super(); |
| } |
| |
| /** |
| * A temporary workaround for Java 8 specific performance issue JDK-8161372 |
| * .<br> |
| * This class should be removed once we drop Java 8 support. |
| * |
| * @see <a href= |
| * "https://bugs.openjdk.java.net/browse/JDK-8161372">JDK-8161372</a> |
| */ |
| public static <K, V> V computeIfAbsent(ConcurrentMap<K, V> map, K key, Function<K, V> mappingFunction) { |
| V value = map.get(key); |
| if (value != null) { |
| return value; |
| } |
| return map.computeIfAbsent(key, mappingFunction::apply); |
| } |
| |
| } |