com.hazelcast.replicatedmap.impl.operation.GetOperation Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of hazelcast Show documentation

Core Hazelcast Module

There is a newer version: 5.4.0

/*
 * 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.replicatedmap.impl.operation;

import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.replicatedmap.impl.ReplicatedMapService;
import com.hazelcast.replicatedmap.impl.record.ReplicatedRecord;
import com.hazelcast.replicatedmap.impl.record.ReplicatedRecordStore;
import com.hazelcast.spi.AbstractOperation;
import java.io.IOException;

public class GetOperation extends AbstractOperation {

    private String name;
    private Data key;
    private transient Object response;

    public GetOperation() {
    }

    public GetOperation(String name, Data key) {
        this.name = name;
        this.key = key;
    }

    @Override
    public void run() throws Exception {
        ReplicatedMapService service = getService();
        ReplicatedRecordStore store = service.getReplicatedRecordStore(name, false, getPartitionId());
        ReplicatedRecord record = store.getReplicatedRecord(key);
        if (record != null) {
            response = record.getValue();
        }
    }

    @Override
    public boolean returnsResponse() {
        return true;
    }

    @Override
    public Object getResponse() {
        return response;
    }

    @Override
    protected void writeInternal(ObjectDataOutput out) throws IOException {
        out.writeUTF(name);
        out.writeData(key);
    }

    @Override
    protected void readInternal(ObjectDataInput in) throws IOException {
        name = in.readUTF();
        key = in.readData();
    }
}