com.hazelcast.map.impl.operation.MergeOperation Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2015, 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.operation;
import com.hazelcast.core.EntryEventType;
import com.hazelcast.core.EntryView;
import com.hazelcast.map.impl.event.MapEventPublisher;
import com.hazelcast.map.impl.MapServiceContext;
import com.hazelcast.map.impl.record.Record;
import com.hazelcast.map.impl.record.RecordInfo;
import com.hazelcast.map.impl.record.Records;
import com.hazelcast.map.merge.MapMergePolicy;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.Operation;
import java.io.IOException;
public class MergeOperation extends BasePutOperation {
private MapMergePolicy mergePolicy;
private EntryView mergingEntry;
private boolean merged;
private Data mergingValue;
public MergeOperation(String name, Data dataKey, EntryView entryView, MapMergePolicy policy) {
super(name, dataKey, null);
mergingEntry = entryView;
mergePolicy = policy;
}
public MergeOperation() {
}
@Override
public void run() {
Record oldRecord = recordStore.getRecord(dataKey);
if (oldRecord != null) {
dataOldValue = mapService.getMapServiceContext().toData(oldRecord.getValue());
}
merged = recordStore.merge(dataKey, mergingEntry, mergePolicy);
if (merged) {
Record record = recordStore.getRecord(dataKey);
if (record != null) {
MapServiceContext mapServiceContext = mapService.getMapServiceContext();
dataValue = mapServiceContext.toData(record.getValue());
mergingValue = mapService.getMapServiceContext().toData(mergingEntry.getValue());
}
}
}
@Override
public Object getResponse() {
return merged;
}
@Override
public boolean shouldBackup() {
final Record record = recordStore.getRecord(dataKey);
return merged && record != null;
}
@Override
public void afterRun() {
if (merged) {
final MapServiceContext mapServiceContext = mapService.getMapServiceContext();
final MapEventPublisher mapEventPublisher = mapServiceContext.getMapEventPublisher();
mapServiceContext.interceptAfterPut(name, dataValue);
mapEventPublisher.publishEvent(getCallerAddress(), name, EntryEventType.MERGED, false, dataKey, dataOldValue,
dataValue, mergingValue);
invalidateNearCaches();
evict();
}
}
@Override
public Operation getBackupOperation() {
if (dataValue == null) {
return new RemoveBackupOperation(name, dataKey);
} else {
final Record record = recordStore.getRecord(dataKey);
final RecordInfo replicationInfo = record != null ? Records.buildRecordInfo(record) : null;
return new PutBackupOperation(name, dataKey, dataValue, replicationInfo);
}
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeObject(mergingEntry);
out.writeObject(mergePolicy);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
mergingEntry = in.readObject();
mergePolicy = in.readObject();
}
}