com.hazelcast.concurrent.atomicreference.AtomicReferenceContainer Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, 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;
import com.hazelcast.nio.serialization.Data;
public class AtomicReferenceContainer {
private Data value;
public Data get() {
return value;
}
public void set(Data value) {
this.value = value;
}
public boolean compareAndSet(Data expect, Data value) {
if (!contains(expect)) {
return false;
}
this.value = value;
return true;
}
public boolean contains(Data expected) {
if (value == null) {
return expected == null;
}
return value.equals(expected);
}
public Data getAndSet(Data value) {
Data tempValue = this.value;
this.value = value;
return tempValue;
}
public boolean isNull() {
return value == null;
}
}