/*
* 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.collection.txn;
import com.hazelcast.collection.CollectionItem;
import com.hazelcast.collection.set.SetService;
import com.hazelcast.core.TransactionalSet;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.NodeEngine;
import com.hazelcast.transaction.TransactionException;
import com.hazelcast.transaction.impl.TransactionSupport;
import com.hazelcast.util.ExceptionUtil;
import java.util.Collection;
import java.util.HashSet;
import java.util.concurrent.Future;
/**
* @author ali 4/16/13
*/
public class TransactionalSetProxy<E> extends AbstractTransactionalCollectionProxy<SetService, E>
implements TransactionalSet<E> {
private final HashSet<CollectionItem> set = new HashSet<CollectionItem>();
public TransactionalSetProxy(String name, TransactionSupport tx, NodeEngine nodeEngine, SetService service) {
super(name, tx, nodeEngine, service);
}
@Override
public boolean add(E e) {
checkTransactionState();
throwExceptionIfNull(e);
final NodeEngine nodeEngine = getNodeEngine();
final Data value = nodeEngine.toData(e);
if (!getCollection().add(new CollectionItem(-1, value))){
return false;
}
CollectionReserveAddOperation operation = new CollectionReserveAddOperation(name, tx.getTxnId(), value);
try {
Future<Long> f = nodeEngine.getOperationService().invokeOnPartition(getServiceName(), operation, partitionId);
Long itemId = f.get();
if (itemId != null) {
if (!itemIdSet.add(itemId)) {
throw new TransactionException("Duplicate itemId: " + itemId);
}
CollectionTxnAddOperation op = new CollectionTxnAddOperation(name, itemId, value);
tx.addTransactionLog(new CollectionTransactionLog(itemId, name, partitionId, getServiceName(), tx.getTxnId(), op));
return true;
}
} catch (Throwable t) {
throw ExceptionUtil.rethrow(t);
}
return false;
}
@Override
public String getServiceName() {
return SetService.SERVICE_NAME;
}
@Override
protected Collection<CollectionItem> getCollection() {
return set;
}
}