com.hazelcast.collection.impl.txnqueue

Class TransactionalQueueProxySupport

java.lang.Object

com.hazelcast.spi.AbstractDistributedObject<S>

com.hazelcast.spi.TransactionalDistributedObject<QueueService>

com.hazelcast.collection.impl.txnqueue.TransactionalQueueProxySupport

All Implemented Interfaces:

DistributedObject, TransactionalObject

Direct Known Subclasses:

TransactionalQueueProxy

public abstract class TransactionalQueueProxySupport
extends TransactionalDistributedObject<QueueService>
implements TransactionalObject

Provides support for proxy of the Transactional Queue.

Field Summary

Fields

Modifier and Type	Field and Description
protected QueueConfig	config
protected String	name
protected int	partitionId

Fields inherited from class com.hazelcast.spi.TransactionalDistributedObject

tx

Fields inherited from class com.hazelcast.spi.AbstractDistributedObject

PARTITIONING_STRATEGY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TransactionalQueueProxySupport(NodeEngine nodeEngine, QueueService service, String name, Transaction tx)

Method Summary

Modifier and Type	Method and Description
protected void	checkTransactionState()
String	getName() Returns the unique name for this DistributedObject.
String	getServiceName() Returns the service name for this object.
boolean	offerInternal(Data data, long timeout) Tries to accomodate one more item in the queue in addition to the already offered items.
Data	peekInternal(long timeout)
Data	pollInternal(long timeout)
int	size()

Methods inherited from class com.hazelcast.spi.TransactionalDistributedObject

toObjectIfNeeded

Methods inherited from class com.hazelcast.spi.AbstractDistributedObject

destroy, equals, getDistributedObjectName, getNameAsPartitionAwareData, getNodeEngine, getOperationService, getPartitionId, getPartitionKey, getService, hashCode, invalidate, invokeOnPartition, postDestroy, preDestroy, throwNotActiveException, toData, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hazelcast.core.DistributedObject

destroy, getPartitionKey

Field Detail

name

protected final String name

partitionId

protected final int partitionId

config

protected final QueueConfig config

Constructor Detail

TransactionalQueueProxySupport

protected TransactionalQueueProxySupport(NodeEngine nodeEngine,
                                         QueueService service,
                                         String name,
                                         Transaction tx)

Method Detail

checkTransactionState

protected void checkTransactionState()

offerInternal

public boolean offerInternal(Data data,
                             long timeout)

Tries to accomodate one more item in the queue in addition to the already offered items. If it succeeds by getting an item ID, it will add the item to the Makes a reservation for a TransactionalQueue#offer operation and adds the commit operation to the transaction log.

Parameters:

data - the serialised item being offered

timeout - the wait timeout in milliseconds for the offer reservation

Returns:

true if the item reservation was made

See Also:

TxnReserveOfferOperation, TxnOfferOperation

pollInternal

public Data pollInternal(long timeout)

peekInternal

public Data peekInternal(long timeout)

size

public int size()

getName

public String getName()

Description copied from interface: DistributedObject

Returns the unique name for this DistributedObject. The returned value will never be null. The suggested way for getting name is retrieving it through DistributedObjectUtil.getName(DistributedObject) because this might be also a PrefixedDistributedObject.

Specified by:

getName in interface DistributedObject

Returns:

the unique name for this object.

getServiceName

public final String getServiceName()

Description copied from interface: DistributedObject

Returns the service name for this object.

Specified by:

getServiceName in interface DistributedObject

Specified by:

getServiceName in class AbstractDistributedObject<QueueService>

Returns:

the service name for this object.