com.hazelcast.cardinality.impl.operations.AggregateOperation 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.cardinality.impl.operations;
import com.hazelcast.cardinality.impl.CardinalityEstimatorDataSerializerHook;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.spi.impl.operationservice.Operation;
import com.hazelcast.spi.impl.operationservice.MutatingOperation;
import java.io.IOException;
public class AggregateOperation
extends CardinalityEstimatorBackupAwareOperation
implements MutatingOperation {
private long hash;
public AggregateOperation() {
}
public AggregateOperation(String name, long hash) {
super(name);
this.hash = hash;
}
@Override
public int getClassId() {
return CardinalityEstimatorDataSerializerHook.ADD;
}
@Override
public void run() throws Exception {
getCardinalityEstimatorContainer().add(hash);
}
@Override
public Operation getBackupOperation() {
return new AggregateBackupOperation(name, hash);
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(hash);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
hash = in.readLong();
}
}