org.apache.avro.util.MapUtil Maven / Gradle / Ivy
/*
* 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
* .
* This class should be removed once we drop Java 8 support.
*
* @see JDK-8161372
*/
public static V computeIfAbsent(ConcurrentMap map, K key, Function mappingFunction) {
V value = map.get(key);
if (value != null) {
return value;
}
return map.computeIfAbsent(key, mappingFunction::apply);
}
}