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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.qpid.server.store.berkeleydb.tuple;
import java.util.UUID;
import com.sleepycat.bind.tuple.TupleBinding;
import com.sleepycat.bind.tuple.TupleInput;
import com.sleepycat.bind.tuple.TupleOutput;
import org.apache.qpid.server.message.EnqueableMessage;
import org.apache.qpid.server.store.StoredMessage;
import org.apache.qpid.server.store.Transaction;
import org.apache.qpid.server.store.TransactionLogResource;
import org.apache.qpid.server.store.berkeleydb.entry.PreparedTransaction;
public class PreparedTransactionBinding extends TupleBinding<PreparedTransaction>
{
@Override
public PreparedTransaction entryToObject(TupleInput input)
{
Transaction.Record[] enqueues = readRecords(input);
Transaction.Record[] dequeues = readRecords(input);
return new PreparedTransaction(enqueues, dequeues);
}
private Transaction.Record[] readRecords(TupleInput input)
{
Transaction.Record[] records = new Transaction.Record[input.readInt()];
for(int i = 0; i < records.length; i++)
{
records[i] = new RecordImpl(new UUID(input.readLong(), input.readLong()), input.readLong());
}
return records;
}
@Override
public void objectToEntry(PreparedTransaction preparedTransaction, TupleOutput output)
{
writeRecords(preparedTransaction.getEnqueues(), output);
writeRecords(preparedTransaction.getDequeues(), output);
}
private void writeRecords(Transaction.Record[] records, TupleOutput output)
{
if(records == null)
{
output.writeInt(0);
}
else
{
output.writeInt(records.length);
for(Transaction.Record record : records)
{
UUID id = record.getQueue().getId();
output.writeLong(id.getMostSignificantBits());
output.writeLong(id.getLeastSignificantBits());
output.writeLong(record.getMessage().getMessageNumber());
}
}
}
private static class RecordImpl implements Transaction.Record, TransactionLogResource, EnqueableMessage
{
private long _messageNumber;
private UUID _queueId;
public RecordImpl(UUID queueId, long messageNumber)
{
_messageNumber = messageNumber;
_queueId = queueId;
}
public TransactionLogResource getQueue()
{
return this;
}
public EnqueableMessage getMessage()
{
return this;
}
public long getMessageNumber()
{
return _messageNumber;
}
public boolean isPersistent()
{
return true;
}
public StoredMessage<?> getStoredMessage()
{
throw new UnsupportedOperationException();
}
@Override
public UUID getId()
{
return _queueId;
}
}
}
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