com.hazelcast.queue.impl.tx
Class TxnPrepareOperation

java.lang.Object
  extended by com.hazelcast.spi.Operation
      extended by com.hazelcast.queue.impl.operations.QueueOperation
          extended by com.hazelcast.queue.impl.operations.QueueBackupAwareOperation
              extended by com.hazelcast.queue.impl.tx.TxnPrepareOperation
All Implemented Interfaces:
DataSerializable, IdentifiedDataSerializable, BackupAwareOperation, RemotePropagatable<Operation>, PartitionAwareOperation

public class TxnPrepareOperation
extends QueueBackupAwareOperation

Prepare operation for the transactional queue.


Field Summary
 
Fields inherited from class com.hazelcast.queue.impl.operations.QueueOperation
name, response
 
Constructor Summary
TxnPrepareOperation()
           
TxnPrepareOperation(String name, long itemId, boolean pollOperation, String transactionId)
           
 
Method Summary
 Operation getBackupOperation()
          Creates the BackupOperation responsible for making the backup.
 int getId()
          Returns type identifier for this class.
protected  void readInternal(ObjectDataInput in)
           
 void run()
           
 boolean shouldBackup()
          Checks if a backup needs to be made.
protected  void writeInternal(ObjectDataOutput out)
           
 
Methods inherited from class com.hazelcast.queue.impl.operations.QueueBackupAwareOperation
getAsyncBackupCount, getSyncBackupCount
 
Methods inherited from class com.hazelcast.queue.impl.operations.QueueOperation
afterRun, beforeRun, getFactoryId, getName, getOrCreateContainer, getQueueService, getResponse, getServiceName, hasListener, publishEvent, returnsResponse
 
Methods inherited from class com.hazelcast.spi.Operation
getCallerAddress, getCallerUuid, getCallId, getCallTimeout, getConnection, getExecutorName, getInvocationTime, getLogger, getNodeEngine, getPartitionId, getReplicaIndex, getResponseHandler, getService, getWaitTimeout, isUrgent, logError, onException, readData, setCallerUuid, setExecutorName, setNodeEngine, setPartitionId, setReplicaIndex, setResponseHandler, setService, setServiceName, setValidateTarget, setWaitTimeout, toString, validatesTarget, writeData
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.hazelcast.spi.PartitionAwareOperation
getPartitionId
 
Methods inherited from interface com.hazelcast.nio.serialization.DataSerializable
readData, writeData
 

Constructor Detail

TxnPrepareOperation

public TxnPrepareOperation()

TxnPrepareOperation

public TxnPrepareOperation(String name,
                           long itemId,
                           boolean pollOperation,
                           String transactionId)
Method Detail

run

public void run()
         throws Exception
Specified by:
run in class Operation
Throws:
Exception

shouldBackup

public boolean shouldBackup()
Description copied from interface: BackupAwareOperation
Checks if a backup needs to be made.

If a call has not made any change, e.g. an AtomicLong increment with 0, no backup needs to be made.

Returns:
true if a backup needs to be made, false otherwise.

getBackupOperation

public Operation getBackupOperation()
Description copied from interface: BackupAwareOperation
Creates the BackupOperation responsible for making the backup.

Returns:
the created BackupOperation.

writeInternal

protected void writeInternal(ObjectDataOutput out)
                      throws IOException
Overrides:
writeInternal in class QueueOperation
Throws:
IOException

readInternal

protected void readInternal(ObjectDataInput in)
                     throws IOException
Overrides:
readInternal in class QueueOperation
Throws:
IOException

getId

public int getId()
Description copied from interface: IdentifiedDataSerializable
Returns type identifier for this class. Id should be unique per DataSerializableFactory.

Returns:
type id


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