org.apache.activemq

Class ActiveMQXASession

java.lang.Object

org.apache.activemq.ActiveMQSession

org.apache.activemq.ActiveMQXASession

All Implemented Interfaces:

Runnable, QueueSession, Session, TopicSession, XAQueueSession, XASession, XATopicSession, ActiveMQDispatcher, StatsCapable

public class ActiveMQXASession
extends ActiveMQSession
implements QueueSession, TopicSession, XAQueueSession, XATopicSession

The XASession interface extends the capability of Session by adding access to a JMS provider's support for the Java Transaction API (JTA) (optional). This support takes the form of a javax.transaction.xa.XAResource object. The functionality of this object closely resembles that defined by the standard X/Open XA Resource interface.

An application server controls the transactional assignment of an XASession by obtaining its XAResource. It uses the XAResource to assign the session to a transaction, prepare and commit work on the transaction, and so on.

An XAResource provides some fairly sophisticated facilities for interleaving work on multiple transactions, recovering a list of transactions in progress, and so on. A JTA aware JMS provider must fully implement this functionality. This could be done by using the services of a database that supports XA, or a JMS provider may choose to implement this functionality from scratch.

A client of the application server is given what it thinks is a regular JMS Session. Behind the scenes, the application server controls the transaction management of the underlying XASession.

The XASession interface is optional. JMS providers are not required to support this interface. This interface is for use by JMS providers to support transactional environments. Client programs are strongly encouraged to use the transactional support available in their environment, rather than use these XA interfaces directly.

See Also:

Session, QueueSession, TopicSession, XASession

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.activemq.ActiveMQSession

ActiveMQSession.DeliveryListener

Field Summary

Fields inherited from class org.apache.activemq.ActiveMQSession

acknowledgementMode, asyncDispatch, closed, connection, consumerIdGenerator, consumers, debug, deliveryIdGenerator, executor, INDIVIDUAL_ACKNOWLEDGE, info, MAX_ACK_CONSTANT, producerIdGenerator, producers, sendMutex, sessionAsyncDispatch, started

Fields inherited from interface javax.jms.Session

AUTO_ACKNOWLEDGE, CLIENT_ACKNOWLEDGE, DUPS_OK_ACKNOWLEDGE, SESSION_TRANSACTED

Constructor Summary

Constructors

Constructor and Description
ActiveMQXASession(ActiveMQXAConnection connection, SessionId sessionId, int theAcknowlegeMode, boolean dispatchAsync)

Method Summary

Methods

Modifier and Type	Method and Description
void	commit() Commits all messages done in this transaction and releases any locks currently held.
protected void	doStartTransaction() Send TransactionInfo to indicate transaction has started
QueueSession	getQueueSession()
Session	getSession()
TopicSession	getTopicSession()
boolean	getTransacted() Indicates whether the session is in transacted mode.
XAResource	getXAResource()
boolean	isAutoAcknowledge() Checks whether the session used auto acknowledgment.
void	rollback() Rolls back any messages done in this transaction and releases any locks currently held.

Methods inherited from class org.apache.activemq.ActiveMQSession

acknowledge, addConsumer, addProducer, asyncSendPacket, checkClosed, checkMessageListener, close, close, configureMessage, createBlobMessage, createBlobMessage, createBlobMessage, createBlobMessage, createBrowser, createBrowser, createBytesMessage, createConsumer, createConsumer, createConsumer, createConsumer, createConsumer, createConsumer, createDurableSubscriber, createDurableSubscriber, createMapMessage, createMessage, createObjectMessage, createObjectMessage, createProducer, createPublisher, createQueue, createReceiver, createReceiver, createSender, createStreamMessage, createSubscriber, createSubscriber, createTemporaryQueue, createTemporaryTopic, createTextMessage, createTextMessage, createTopic, dispatch, dispose, getAcknowledgeMode, getBlobTransferPolicy, getConnection, getConnectionExecutor, getDeliveryListener, getLastDeliveredSequenceId, getMessageListener, getNextConsumerId, getNextDeliveryId, getNextProducerId, getScheduler, getSessionId, getSessionInfo, getSessionStats, getStats, getTransactionContext, getTransformer, getUnconsumedMessages, hasUncomsumedMessages, isAsyncDispatch, isClientAcknowledge, isClosed, isDupsOkAcknowledge, isIndividualAcknowledge, isInUse, isRunning, isSessionAsyncDispatch, isTransacted, recover, redispatch, removeConsumer, removeProducer, run, send, sendAck, sendAck, setAsyncDispatch, setBlobTransferPolicy, setDeliveryListener, setMessageListener, setOptimizeAcknowledge, setPrefetchSize, setSessionAsyncDispatch, setTransactionContext, setTransformer, start, stop, syncSendPacket, toString, unsubscribe

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.jms.QueueSession

createBrowser, createBrowser, createQueue, createReceiver, createReceiver, createSender, createTemporaryQueue

Methods inherited from interface javax.jms.TopicSession

createDurableSubscriber, createDurableSubscriber, createPublisher, createSubscriber, createSubscriber, createTemporaryTopic, createTopic, unsubscribe

Methods inherited from interface javax.jms.Session

close, createBytesMessage, createConsumer, createConsumer, createConsumer, createMapMessage, createMessage, createObjectMessage, createObjectMessage, createProducer, createStreamMessage, createTextMessage, createTextMessage, getAcknowledgeMode, getMessageListener, recover, run, setMessageListener

Constructor Detail

ActiveMQXASession

public ActiveMQXASession(ActiveMQXAConnection connection,
                 SessionId sessionId,
                 int theAcknowlegeMode,
                 boolean dispatchAsync)
                  throws JMSException

Throws:

JMSException

Method Detail

getTransacted

public boolean getTransacted()
                      throws JMSException

Description copied from class: ActiveMQSession

Indicates whether the session is in transacted mode.

Specified by:

getTransacted in interface Session

Specified by:

getTransacted in interface XASession

Overrides:

getTransacted in class ActiveMQSession

Returns:

true if the session is in transacted mode

Throws:

JMSException - if there is some internal error.

rollback

public void rollback()
              throws JMSException

Description copied from class: ActiveMQSession

Rolls back any messages done in this transaction and releases any locks currently held.

Specified by:

rollback in interface Session

Specified by:

rollback in interface XASession

Overrides:

rollback in class ActiveMQSession

Throws:

JMSException - if the JMS provider fails to roll back the transaction due to some internal error.

IllegalStateException - if the method is not called by a transacted session.

commit

public void commit()
            throws JMSException

Description copied from class: ActiveMQSession

Commits all messages done in this transaction and releases any locks currently held.

Specified by:

commit in interface Session

Specified by:

commit in interface XASession

Overrides:

commit in class ActiveMQSession

Throws:

JMSException - if the JMS provider fails to commit the transaction due to some internal error.

TransactionRolledBackException - if the transaction is rolled back due to some internal error during commit.

IllegalStateException - if the method is not called by a transacted session.

getSession

public Session getSession()
                   throws JMSException

Specified by:

getSession in interface XASession

Throws:

JMSException

getXAResource

public XAResource getXAResource()

Specified by:

getXAResource in interface XASession

getQueueSession

public QueueSession getQueueSession()
                             throws JMSException

Specified by:

getQueueSession in interface XAQueueSession

Throws:

JMSException

getTopicSession

public TopicSession getTopicSession()
                             throws JMSException

Specified by:

getTopicSession in interface XATopicSession

Throws:

JMSException

isAutoAcknowledge

public boolean isAutoAcknowledge()

Description copied from class: ActiveMQSession

Checks whether the session used auto acknowledgment.

Overrides:

isAutoAcknowledge in class ActiveMQSession

Returns:

true - if the session uses client acknowledgment.

doStartTransaction

protected void doStartTransaction()
                           throws JMSException

Description copied from class: ActiveMQSession

Send TransactionInfo to indicate transaction has started

Overrides:

doStartTransaction in class ActiveMQSession

Throws:

JMSException - if some internal error occurs