org.cementj.base
Class DefaultMessageDrivenBean

java.lang.Object
  org.cementj.base.DefaultMessageDrivenBean

All Implemented Interfaces:

java.io.Serializable, javax.ejb.EnterpriseBean, javax.ejb.MessageDrivenBean, javax.jms.MessageListener

public abstract class DefaultMessageDrivenBean
extends java.lang.Object
implements javax.ejb.MessageDrivenBean, javax.jms.MessageListener

Default implementation for message driven bean. This class will do the mundane mechanics of tracking context and implement several methods most developers stump anyway. All you have to do is extend this class, implement onMessage() and deploy.

Copyright: Delta Vortex Technologies, 2003.

See Also:

Serialized Form

Field Summary

protected javax.ejb.MessageDrivenContext

_messageDrivenContext

Constructor Summary

DefaultMessageDrivenBean()

Method Summary

void	ejbRemove() Hollow implementation to satisfy MessageDrivenBean interface.
javax.ejb.MessageDrivenContext	getMessageDrivenContext() Returns the container-provided message-driven context.
javax.transaction.UserTransaction	getUserTransaction() Obtains the UserTransaction from the container-provided message-driven context.
abstract void	onMessage(javax.jms.Message message) You must implement processing for messages for a MessageDrivenBean to be usedful.
void	setMessageDrivenContext(javax.ejb.MessageDrivenContext context) Records message driven context provided by the J2EE container.

Methods inherited from class java.lang.Object

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

Field Detail

_messageDrivenContext

protected javax.ejb.MessageDrivenContext _messageDrivenContext

Constructor Detail

DefaultMessageDrivenBean

public DefaultMessageDrivenBean()

Method Detail

setMessageDrivenContext

public void setMessageDrivenContext(javax.ejb.MessageDrivenContext context)
                             throws javax.ejb.EJBException

Records message driven context provided by the J2EE container.

Specified by:

setMessageDrivenContext in interface javax.ejb.MessageDrivenBean

Parameters:

context -

Throws:

EJBException

ejbRemove

public void ejbRemove()
               throws javax.ejb.EJBException

Hollow implementation to satisfy MessageDrivenBean interface. Override it you actually want something to happen here.

Specified by:

ejbRemove in interface javax.ejb.MessageDrivenBean

Throws:

EJBException

getUserTransaction

public javax.transaction.UserTransaction getUserTransaction()

Obtains the UserTransaction from the container-provided message-driven context. This will generate an IllegalStateException if the UserTransaction isn't obtainable.

Returns:

UserTransaction

getMessageDrivenContext

public javax.ejb.MessageDrivenContext getMessageDrivenContext()

Returns the container-provided message-driven context.

Returns:

MessageDrivenContext

onMessage

public abstract void onMessage(javax.jms.Message message)

You must implement processing for messages for a MessageDrivenBean to be usedful.

Specified by:

onMessage in interface javax.jms.MessageListener

Parameters:

message -