EJB.5.6 Client View of Session Object s Life Cycle

EJB.5.6 Client View of Session Object's Life Cycle

From a client point of view, the life cycle of a session object is illustrated in Figure EJB.5-2.

Figure EJB.5-2. Life Cycle of a Session Object

A session object does not exist until it is created. When a client creates a session object, the client has a reference to the newly created session object's remote interface.

A client that has a reference to a session object can then do any of the following:

• Invoke business methods defined in the session object's remote interface.

• Get a reference to the session object's home interface.

• Get a handle for the session object.

• Pass the reference as a parameter or return value within the scope of the client.

• Remove the session object. A container may also remove the session object automatically when the session object's lifetime expires .

It is invalid to reference a session object that does not exist. Attempted invocations on a session object that does not exist result in java.rmi.NoSuchObjectException .