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Struts & Hibernate
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| | | Does the state of StateMachine survive after passivated? | Does the state of StateMachine survive after passivated? 2003-09-25 - By Sean Brydon
Back
Hi,
stateless session beans do not call activate or passivate as part of
their lifecycle. They are pooled so any state kept (should be state
useable for all clients and not session conversational type state) as a
field will live as the bean comes in/out of the pool.
hope that helps,
Sean
peng wang wrote:
>Hi,
>
>In petstore, there is EJB controller as
>public class EJBControllerLocalEJB implements
>SessionBean {
>
> protected StateMachine sm;
> protected SessionContext sc;
>
> public EJBControllerLocalEJB() {}
>
>
> public void ejbCreate() {
> sm = new StateMachine(this, sc);
> }
>
> /** returns an EventResponse */
>
> public EventResponse processEvent(Event ev)
> throws EventException {
> return (sm.processEvent(ev));
> }
>
> public void setSessionContext(SessionContext sc) {
> this.sc = sc;
> }
>
> public void ejbRemove() {
> sm = null;
> }
>
> public void ejbActivate() {}
>
> public void ejbPassivate() {}
>}
>As I know, there is a HashMap actionMap within
>StateMachine sm which
>may store some action Objects. Can the info stored in
>the Hashmap
>survive if the EJBControllerLocalEJB instance has been
>passivated and
>been activated back again? I am not sure because I
>think
>EJBControllerLocalEJB is stateless.
>
>Thanks!
>
>
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