setMessageDrivenContext() doubt

[Deepak Jain]

EJB Core Specification:
The setMessageDrivenContext method is called by the bean�s container to associate a message-
driven bean instance with its context maintained by the container. Typically a message-driven bean
instance retains its message-driven context as part of its state.

To test this functionality I had MDB that implements MessageDrivenBean interface.

/**
 * Message-Driven Bean implementation class for: ShippingRequestMDB This is a
 * JMS MDB becuase it implements javax.jms.MessageListener.
 * 
 */
@MessageDriven(description = "Shipping Request Message consumer.", name = "ShippingRequestMessageConsumer", mappedName = "ShippingRequestMessageConsumer", activationConfig = {
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
@ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/ShippingRequestQueue") })
@TransactionManagement(TransactionManagementType.CONTAINER)
public class ShippingRequestProcessorMDB implements MessageListener,
SessionBean, MessageDrivenBean {
private Connection connection;
 
private DataSource dataSource;
 
@Resource
private MessageDrivenContext context;
 
.....
 
public void setMessageDrivenContext(MessageDrivenContext arg0)
throws EJBException {
System.out.println("MDB.setMessageDrivenContext************");
context = arg0;
}
}

setMessageDrivenContext() was never invoked and context remained null, which resulted in a NullPointerException in the onMessage().

[Deepak Jain]

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[Deepak Jain]

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