/
CollectionTransactionLogRecord.java
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/
CollectionTransactionLogRecord.java
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/*
* Copyright (c) 2008-2018, 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.collection.impl.txncollection;
import com.hazelcast.collection.impl.CollectionTxnUtil;
import com.hazelcast.collection.impl.collection.CollectionDataSerializerHook;
import com.hazelcast.collection.impl.txncollection.operations.CollectionCommitOperation;
import com.hazelcast.collection.impl.txncollection.operations.CollectionPrepareOperation;
import com.hazelcast.collection.impl.txncollection.operations.CollectionRollbackOperation;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.spi.Operation;
import com.hazelcast.transaction.impl.TransactionLogRecord;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* This class contains Transaction log for the Collection.
*/
public class CollectionTransactionLogRecord implements TransactionLogRecord {
protected String name;
protected List<Operation> operationList;
protected int partitionId;
protected String transactionId;
protected String serviceName;
public CollectionTransactionLogRecord() {
}
public CollectionTransactionLogRecord(String serviceName, String transactionId, String name, int partitionId) {
this.serviceName = serviceName;
this.transactionId = transactionId;
this.name = name;
this.partitionId = partitionId;
this.operationList = new ArrayList<Operation>();
}
@Override
public Operation newPrepareOperation() {
long[] itemIds = createItemIdArray();
return new CollectionPrepareOperation(partitionId, name, serviceName, itemIds, transactionId);
}
@Override
public Operation newCommitOperation() {
return new CollectionCommitOperation(partitionId, name, serviceName, operationList);
}
@Override
public void onCommitSuccess() {
// NOP
}
@Override
public void onCommitFailure() {
// NOP
}
@Override
public Operation newRollbackOperation() {
long[] itemIds = createItemIdArray();
return new CollectionRollbackOperation(partitionId, name, serviceName, itemIds);
}
@Override
public Object getKey() {
return name;
}
public void addOperation(CollectionTxnOperation operation) {
Iterator<Operation> iterator = operationList.iterator();
while (iterator.hasNext()) {
CollectionTxnOperation op = (CollectionTxnOperation) iterator.next();
if (op.getItemId() == operation.getItemId()) {
iterator.remove();
break;
}
}
operationList.add((Operation) operation);
}
public int removeOperation(long itemId) {
Iterator<Operation> iterator = operationList.iterator();
while (iterator.hasNext()) {
CollectionTxnOperation op = (CollectionTxnOperation) iterator.next();
if (op.getItemId() == itemId) {
iterator.remove();
break;
}
}
return operationList.size();
}
/**
* Creates an array of IDs for all operations in this transaction log. The ID is negative if the operation is a remove
* operation.
*
* @return an array of IDs for all operations in this transaction log
*/
protected long[] createItemIdArray() {
int size = operationList.size();
long[] itemIds = new long[size];
for (int i = 0; i < size; i++) {
CollectionTxnOperation operation = (CollectionTxnOperation) operationList.get(i);
itemIds[i] = CollectionTxnUtil.getItemId(operation);
}
return itemIds;
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeUTF(serviceName);
out.writeUTF(transactionId);
out.writeUTF(name);
out.writeInt(partitionId);
CollectionTxnUtil.write(out, operationList);
}
@Override
public void readData(ObjectDataInput in) throws IOException {
serviceName = in.readUTF();
transactionId = in.readUTF();
name = in.readUTF();
partitionId = in.readInt();
operationList = CollectionTxnUtil.read(in);
}
@Override
public int getFactoryId() {
return CollectionDataSerializerHook.F_ID;
}
@Override
public int getId() {
return CollectionDataSerializerHook.COLLECTION_TRANSACTION_LOG_RECORD;
}
}