com.interface21.ejb.support
Class AbstractStatelessSessionBean

java.lang.Object
  |
  +--com.interface21.ejb.support.AbstractEnterpriseBean
        |
        +--com.interface21.ejb.support.AbstractSessionBean
              |
              +--com.interface21.ejb.support.AbstractStatelessSessionBean

All Implemented Interfaces:

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

public abstract class AbstractStatelessSessionBean

extends AbstractSessionBean

Convenient superclass for stateless session beans (SLSBs), minimizing the work involved in implementing an SLSB and preventing common errors. Note that SLSBs are the most useful kind of EJB.
As the ejbActivate() and ejbPassivate() methods cannot be invoked on SLSBs, these methods are implemented to throw an exception and should not be overriden by subclasses. (Unfortunately the EJB specification forbids enforcing this by making these two methods final.)
Subclasses are left to implement the ejbCreate() method to ensure that they offer a no-argument implementation of the home interface's create() method as required by the EJB specification.

Author:

Rod Johnson

See Also:

Serialized Form

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

logger

Constructor Summary

AbstractStatelessSessionBean()

Method Summary

void	ejbActivate()
abstract void	ejbCreate() This is declared abstract to ensure that subclasses implement this method.
void	ejbPassivate()

Methods inherited from class com.interface21.ejb.support.AbstractSessionBean

ejbRemove, getSessionContext, setSessionContext

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractStatelessSessionBean

public AbstractStatelessSessionBean()

Method Detail

ejbCreate

public abstract void ejbCreate()
                        throws javax.ejb.CreateException

This is declared abstract to ensure that subclasses implement this method. Otherwise it isn't required by the compiler, but will fail on deployment. This is a common cause of errors in implementing SLSBs.
The BeanFactory is available at this point

ejbActivate

public void ejbActivate()
                 throws javax.ejb.EJBException

See Also:

This method always throws an exception, as it should not be invoked by the EJB container.

ejbPassivate

public void ejbPassivate()
                  throws javax.ejb.EJBException

See Also:

This method always throws an exception, as it should not be invoked by the EJB container.