com.interface21.ejb.support
Class AbstractMessageDrivenBean

java.lang.Object
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  +--com.interface21.ejb.support.AbstractEnterpriseBean
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        +--com.interface21.ejb.support.AbstractMessageDrivenBean

All Implemented Interfaces:

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

Direct Known Subclasses:

AbstractJmsMessageDrivenBean

public abstract class AbstractMessageDrivenBean

extends AbstractEnterpriseBean

implements javax.ejb.MessageDrivenBean

Convenient superclass for MDBs. Doesn't require JMS, as EJB 2.1 MDBs are no longer JMS-specific: see the AbstractJmsMessageDrivenBean subclass.
This class ensures that subclasses have access to the MessageDrivenContext provided by the EJB container, and implement a no argument ejbCreate() method as required by the EJB specification, but not the javax.ejb.MessageDrivenBean interface.
NB: we cannot use final methods to implement EJB API methods, as this violates the EJB specification.

Author:

Rod Johnson

See Also:

Serialized Form

Fields inherited from class com.interface21.ejb.support.AbstractEnterpriseBean

logger

Constructor Summary

AbstractMessageDrivenBean()

Method Summary

abstract void	ejbCreate() Lifecycle method required by the EJB specification but not the MessageDrivenBean interface.
void	ejbRemove() This method is required by the EJB Specification.
protected javax.ejb.MessageDrivenContext	getMessageDrivenContext() Convenience method for subclasses to use
void	setMessageDrivenContext(javax.ejb.MessageDrivenContext messageDrivenContext) Required lifecycle method.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMessageDrivenBean

public AbstractMessageDrivenBean()

Method Detail

getMessageDrivenContext

protected final javax.ejb.MessageDrivenContext getMessageDrivenContext()

Convenience method for subclasses to use

Returns:

the MessageDrivenContext passed to this EJB by the EJB container

setMessageDrivenContext

public void setMessageDrivenContext(javax.ejb.MessageDrivenContext messageDrivenContext)

Required lifecycle method. Sets the MessageDriven context.

Specified by:

setMessageDrivenContext in interface javax.ejb.MessageDrivenBean

Parameters:

messageDrivenContext - MessageDrivenContext

ejbCreate

public abstract void ejbCreate()

Lifecycle method required by the EJB specification but not the MessageDrivenBean interface. We implement this as an abstract method to force subclasses to implement it. Can use BeanFactory here for initialization if required.

ejbRemove

public void ejbRemove()

This method is required by the EJB Specification.

Specified by:

ejbRemove in interface javax.ejb.MessageDrivenBean