org.objectweb.jonas_ejb.container
Class JMessageDrivenBean

java.lang.Object
  |
  +--org.objectweb.jonas_ejb.container.JMessageDrivenBean

All Implemented Interfaces:

javax.ejb.EJBContext, javax.ejb.MessageDrivenContext, javax.jms.MessageListener, java.lang.Runnable, javax.jms.ServerSession

public class JMessageDrivenBean

extends java.lang.Object

implements javax.jms.MessageListener, javax.jms.ServerSession, java.lang.Runnable, javax.ejb.MessageDrivenContext

Generic interposed class for Message Driven Beans This class presents these interfaces, depending on object reached: ServerSession interface to the ServerSessionPool MessageDrivenContext interface to the bean instance MessageListener interface to the JMS Session Runnable interface to the ThreadPool

Author:

Philippe Coq, Philippe Durieux, Christophe Ney (Easier Enhydra integration)

Field Summary

protected JMdbFactory	bf
protected javax.ejb.MessageDrivenBean	mdb
protected javax.jms.Session	sess
protected ThreadPool	thpool
protected javax.transaction.TransactionManager	tm
protected int	txattr

Constructor Summary

JMessageDrivenBean(JMdbFactory bf, javax.jms.Session sess, javax.ejb.MessageDrivenBean mdb, ThreadPool thpool)
constructor

Method Summary

java.security.Identity	getCallerIdentity() Deprecated.
java.security.Principal	getCallerPrincipal() Obtain the java.security.Principal that identifies the caller. throws a java.lang.IllegalStateException for message driven bean because there is no security context available (EJB v2.0, chapter 14.5.1)
javax.ejb.EJBHome	getEJBHome() Is disallowed.
javax.ejb.EJBLocalHome	getEJBLocalHome() Is disallowed.
java.util.Properties	getEnvironment() Deprecated. Use the JNDI naming context java:comp/env instead.
boolean	getRollbackOnly() Tests if the transaction has been marked for rollback only.
javax.jms.Session	getSession() Return the ServerSession's Session.
javax.transaction.UserTransaction	getUserTransaction() Obtains the transaction demarcation interface.
boolean	isCallerInRole(java.security.Identity role) Deprecated.
boolean	isCallerInRole(java.lang.String roleLink) Test if the caller has a given role.
void	onMessage(javax.jms.Message message) A message has been received by the Session.
void	run() Process messages by calling run method on Session.
void	setRollbackOnly() Marks the current transaction for rollback.
void	start() Cause the session's run method to be called to process messages that were just assigned to it.

Methods inherited from class java.lang.Object

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

Field Detail

sess

protected javax.jms.Session sess

bf

protected JMdbFactory bf

mdb

protected javax.ejb.MessageDrivenBean mdb

txattr

protected int txattr

tm

protected javax.transaction.TransactionManager tm

thpool

protected ThreadPool thpool

Constructor Detail

JMessageDrivenBean

public JMessageDrivenBean(JMdbFactory bf,
                          javax.jms.Session sess,
                          javax.ejb.MessageDrivenBean mdb,
                          ThreadPool thpool)

constructor

Parameters:

bf - The MDB Factory

sess - The JMS Session

mdb - The Message Driven Bean

thpool - The Thread Pool

Method Detail

onMessage

public void onMessage(javax.jms.Message message)

A message has been received by the Session. Basically, we have to do: preInvoke + onMessage + postInvoke. No exception should be returned to the caller.

Specified by:

onMessage in interface javax.jms.MessageListener

Parameters:

message - The received message to handle.

getSession

public javax.jms.Session getSession()
                             throws javax.jms.JMSException

Return the ServerSession's Session. This must be a Session created by the same Connection which will be dispatching messages to it. The provider will assign one or more messages to the Session and then call start on the ServerSession.

Specified by:

getSession in interface javax.jms.ServerSession

Returns:

the server session's session.

Throws:

javax.jms.JMSException - - if a JMS fails to get associated session for this serverSession due to some internal error.

start

public void start()
           throws javax.jms.JMSException

Cause the session's run method to be called to process messages that were just assigned to it.

Specified by:

start in interface javax.jms.ServerSession

Throws:

javax.jms.JMSException - - if a JMS fails to start the server session to process messages.

run

public void run()

Process messages by calling run method on Session. When finished, return the object in the pool.

Specified by:

run in interface java.lang.Runnable

getCallerIdentity

public java.security.Identity getCallerIdentity()

Deprecated.

Obtains the java.security.Identity of the caller. disallowed in messagedriven bean method because there is no security context

Specified by:

getCallerIdentity in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - always

getCallerPrincipal

public java.security.Principal getCallerPrincipal()

Obtain the java.security.Principal that identifies the caller. throws a java.lang.IllegalStateException for message driven bean because there is no security context available (EJB v2.0, chapter 14.5.1)

Specified by:

getCallerPrincipal in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - always

isCallerInRole

public boolean isCallerInRole(java.security.Identity role)

Deprecated.

Test if the caller has a given role.

Specified by:

isCallerInRole in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - for message driven bean because there is no security context available

isCallerInRole

public boolean isCallerInRole(java.lang.String roleLink)

Test if the caller has a given role.

Specified by:

isCallerInRole in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - for message driven bean because there is no security context available

setRollbackOnly

public void setRollbackOnly()

Marks the current transaction for rollback. Should be used only if the instance is associated with a transaction

Specified by:

setRollbackOnly in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - if the instance is not associated with a transaction

getRollbackOnly

public boolean getRollbackOnly()

Tests if the transaction has been marked for rollback only.

Specified by:

getRollbackOnly in interface javax.ejb.EJBContext

Returns:

True if transaction has been marked for rollback.

getEJBHome

public javax.ejb.EJBHome getEJBHome()

Is disallowed. There is no home for message driven bean.

Specified by:

getEJBHome in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - Always.

getEJBLocalHome

public javax.ejb.EJBLocalHome getEJBLocalHome()

Is disallowed. There is no local home for message driven bean.

Specified by:

getEJBLocalHome in interface javax.ejb.EJBContext

Throws:

java.lang.IllegalStateException - Always.

getEnvironment

public java.util.Properties getEnvironment()

Deprecated. Use the JNDI naming context java:comp/env instead.

Specified by:

getEnvironment in interface javax.ejb.EJBContext

Returns:

properties for the bean.

getUserTransaction

public javax.transaction.UserTransaction getUserTransaction()
                                                     throws java.lang.IllegalStateException

Obtains the transaction demarcation interface.

Specified by:

getUserTransaction in interface javax.ejb.EJBContext

Returns:

The UserTransaction interface that the enterprise bean instance can use for transaction demarcation.

Throws:

IllegalStateException: - Thrown if the instance container does not make the UserTransaction interface available to the instance.