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Oracle® Streams Advanced Queuing Java API Reference 10g Release 2 (10.2) B14291-01 |
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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.
Session
Field Summary |
Fields inherited from interface javax.jms.Session |
AUTO_ACKNOWLEDGE, CLIENT_ACKNOWLEDGE, DUPS_OK_ACKNOWLEDGE, SESSION_TRANSACTED |
Method Summary | |
void |
commit() Throws a TransactionInProgressException , since it should not be called for an XASession object. |
Session |
getSession() Gets the session associated with this XASession . |
boolean |
getTransacted() Indicates whether the session is in transacted mode. |
javax.transaction.xa.XAResource |
getXAResource() Returns an XA resource to the caller. |
void |
rollback() Throws a TransactionInProgressException , since it should not be called for an XASession object. |
Method Detail |
public Session getSession() throws JMSException
XASession
.JMSException
- if an internal error occurs.public javax.transaction.xa.XAResource getXAResource()
public boolean getTransacted() throws JMSException
getTransacted
in interface Session
JMSException
- if the JMS provider fails to return the transaction mode due to some internal error.public void commit() throws JMSException
TransactionInProgressException
, since it should not be called for an XASession
object.commit
in interface Session
TransactionInProgressException
- if the method is called on an XASession
.JMSException
- if the JMS provider fails to commit the transaction due to some internal error.public void rollback() throws JMSException
TransactionInProgressException
, since it should not be called for an XASession
object.rollback
in interface Session
TransactionInProgressException
- if the method is called on an XASession
.JMSException
- if the JMS provider fails to roll back the transaction due to some internal error.
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Oracle® Streams Advanced Queuing Java API Reference 10g Release 2 (10.2) B14291-01 |
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