com.hazelcast.map.impl.ComputeIfPresentEntryProcessor Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.map.impl;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.IdentifiedDataSerializable;
import java.io.IOException;
import java.util.Map;
import java.util.function.BiFunction;
public class ComputeIfPresentEntryProcessor implements EntryProcessor, IdentifiedDataSerializable {
BiFunction biFunction;
public ComputeIfPresentEntryProcessor() {
}
public ComputeIfPresentEntryProcessor(BiFunction biFunction) {
this.biFunction = biFunction;
}
@Override
public V process(Map.Entry entry) {
V newValue = biFunction.apply(entry.getKey(), entry.getValue());
if (newValue != null) {
entry.setValue(newValue);
} else {
((LazyMapEntry) entry).remove();
}
return newValue;
}
@Override
public int getFactoryId() {
return MapDataSerializerHook.F_ID;
}
@Override
public int getClassId() {
return MapDataSerializerHook.COMPUTE_IF_PRESENT_PROCESSOR;
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeObject(biFunction);
}
@Override
public void readData(ObjectDataInput in) throws IOException {
biFunction = in.readObject();
}
}