/*
* 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.map.tx;
import com.hazelcast.map.operation.BaseRemoveOperation;
import com.hazelcast.map.record.Record;
import com.hazelcast.map.operation.RemoveBackupOperation;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.ResponseHandler;
import com.hazelcast.spi.WaitNotifyKey;
import java.io.IOException;
/**
* @author mdogan 3/25/13
*/
public class TxnDeleteOperation extends BaseRemoveOperation implements MapTxnOperation {
private long version;
private boolean successful = false;
private String ownerUuid;
public TxnDeleteOperation() {
}
public TxnDeleteOperation(String name, Data dataKey, long version) {
super(name, dataKey);
this.version = version;
}
@Override
public void run() {
recordStore.unlock(dataKey, ownerUuid, getThreadId());
Record record = recordStore.getRecord(dataKey);
if (record == null || version == record.getVersion()){
dataOldValue = getNodeEngine().toData(recordStore.remove(dataKey));
successful = dataOldValue != null;
}
}
@Override
public boolean shouldWait() {
return !recordStore.canAcquireLock(dataKey, ownerUuid, getThreadId());
}
public void afterRun() {
if (successful)
super.afterRun();
}
@Override
public void onWaitExpire() {
final ResponseHandler responseHandler = getResponseHandler();
responseHandler.sendResponse(false);
}
public long getVersion() {
return version;
}
public void setVersion(long version) {
this.version = version;
}
@Override
public Object getResponse() {
return Boolean.TRUE;
}
public boolean shouldNotify() {
return true;
}
public Operation getBackupOperation() {
return new RemoveBackupOperation(name, dataKey, true);
}
@Override
public void setOwnerUuid(String ownerUuid) {
this.ownerUuid = ownerUuid;
}
@Override
public boolean shouldBackup() {
return true;
}
public WaitNotifyKey getNotifiedKey() {
return getWaitKey();
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeLong(version);
out.writeUTF(ownerUuid);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
version = in.readLong();
ownerUuid = in.readUTF();
}
}