javax.jms.XASession Maven / Gradle / Ivy
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package javax.jms;
import javax.transaction.xa.XAResource;
/** The {@code XASession} interface extends the capability of
* {@code Session} by adding access to a JMS provider's support for the
* Java Transaction API (JTA) (optional). This support takes the form of a
* {@code 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
* {@code XASession} by obtaining its {@code XAResource}. It uses
* the {@code XAResource} to assign the session to a transaction, prepare
* and commit work on the transaction, and so on.
*
*
An {@code 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 {@code Session}. Behind the scenes, the application server
* controls the transaction management of the underlying
* {@code XASession}.
*
*
The {@code 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 javax.jms.Session
*
* @version JMS 2.0
* @since JMS 1.0
*
*/
public interface XASession extends Session {
/** Gets the session associated with this {@code XASession}.
*
* @return the session object
*
* @exception JMSException if an internal error occurs.
*
* @since JMS 1.1
*/
Session
getSession() throws JMSException;
/** Returns an XA resource to the caller.
*
* @return an XA resource to the caller
*/
XAResource
getXAResource();
/** Indicates whether the session is in transacted mode.
*
* @return true
*
* @exception JMSException if the JMS provider fails to return the
* transaction mode due to some internal error.
*/
boolean
getTransacted() throws JMSException;
/** Throws a {@code TransactionInProgressException}, since it should
* not be called for an {@code XASession} object.
*
* @exception TransactionInProgressException if the method is called on
* an {@code XASession}.
*
*/
void
commit() throws JMSException;
/** Throws a {@code TransactionInProgressException}, since it should
* not be called for an {@code XASession} object.
*
* @exception TransactionInProgressException if the method is called on
* an {@code XASession}.
*
*/
void
rollback() throws JMSException;
}