com.hazelcast.concurrent.atomicreference.operations.GetAndAlterOperation Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, 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.concurrent.atomicreference.operations;
import com.hazelcast.concurrent.atomicreference.AtomicReferenceDataSerializerHook;
import com.hazelcast.concurrent.atomicreference.ReferenceWrapper;
import com.hazelcast.core.IFunction;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.NodeEngine;
public class GetAndAlterOperation extends AbstractAlterOperation {
public GetAndAlterOperation() {
}
public GetAndAlterOperation(String name, Data function) {
super(name, function);
}
@Override
public void run() throws Exception {
NodeEngine nodeEngine = getNodeEngine();
IFunction f = nodeEngine.toObject(function);
ReferenceWrapper reference = getReference();
Object input = nodeEngine.toObject(reference.get());
response = input;
//noinspection unchecked
Object output = f.apply(input);
shouldBackup = !isEquals(input, output);
if (shouldBackup) {
backup = nodeEngine.toData(output);
reference.set(backup);
}
}
@Override
public int getId() {
return AtomicReferenceDataSerializerHook.GET_AND_ALTER;
}
}