Package javax.ejb

Interface SessionBean

All Superinterfaces:
EnterpriseBean, Serializable
public interface SessionBean extends EnterpriseBean
The SessionBean interface defines methods that the EJB container uses to notify a session bean instance of the instance's life cycle events.

As of EJB 3.0 it is no longer required that a session bean class implement this interface.

Since:
EJB 1.0

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    ejbActivate()
    The activate method is called when a stateful session bean instance is activated from its "passive" state.
    void
    ejbPassivate()
    The passivate method is called before a stateful session bean instance enters the "passive" state.
    void
    ejbRemove()
    A container invokes this method before it ends the life of the session object.
    void
    setSessionContext(SessionContext ctx)
    Set the associated session context.

  • Method Details

    • setSessionContext

      void setSessionContext(SessionContext ctx) throws EJBException, RemoteException
      Set the associated session context. The container calls this method after the instance creation.

      The session bean instance should store the reference to the context object in an instance variable.

      This method is called with no transaction context.

      Parameters:
      ctx - A SessionContext interface for the instance.
      Throws:
      EJBException - Thrown by the method to indicate a failure caused by a system-level error.
      RemoteException - This exception is defined in the method signature to provide backward compatibility for applications written for the EJB 1.0 specification. Enterprise beans written for the EJB 1.1 specification should throw the javax.ejb.EJBException instead of this exception. Enterprise beans written for the EJB2.0 and higher specifications must throw the javax.ejb.EJBException instead of this exception.

    • ejbRemove

      void ejbRemove() throws EJBException, RemoteException
      A container invokes this method before it ends the life of the session object. This happens as a result of a client's invoking a remove operation, or when a container decides to terminate the session object after a timeout.

      This method is called with no transaction context.

      Throws:
      EJBException - Thrown by the method to indicate a failure caused by a system-level error.
      RemoteException - This exception is defined in the method signature to provide backward compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the EJB 1.1 specification should throw the javax.ejb.EJBException instead of this exception. Enterprise beans written for the EJB2.0 and higher specifications must throw the javax.ejb.EJBException instead of this exception.

    • ejbActivate

      void ejbActivate() throws EJBException, RemoteException
      The activate method is called when a stateful session bean instance is activated from its "passive" state. The instance should acquire any resource that it has released earlier in the ejbPassivate method.

      This method is called with no transaction context.

      Throws:
      EJBException - Thrown by the method to indicate a failure caused by a system-level error.
      RemoteException - This exception is defined in the method signature to provide backward compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the EJB 1.1 specification should throw the javax.ejb.EJBException instead of this exception. Enterprise beans written for the EJB2.0 and higher specifications must throw the javax.ejb.EJBException instead of this exception.

    • ejbPassivate

      void ejbPassivate() throws EJBException, RemoteException
      The passivate method is called before a stateful session bean instance enters the "passive" state. The instance should release any resources that it can re-acquire later in the ejbActivate method.

      After the passivate method completes, the instance must be in a state that allows the container to use the Java Serialization protocol to externalize and store away the instance's state.

      This method is called with no transaction context.

      Throws:
      EJBException - Thrown by the method to indicate a failure caused by a system-level error.
      RemoteException - This exception is defined in the method signature to provide backward compatibility for enterprise beans written for the EJB 1.0 specification. Enterprise beans written for the EJB 1.1 specification should throw the javax.ejb.EJBException instead of this exception. Enterprise beans written for the EJB2.0 and higher specifications must throw the javax.ejb.EJBException instead of this exception.