Well, it's probably cheating in terms of the spec (and possibly not portable
as a result), but you could create a separate "connection pool" service for
these MQ series connections, and have your session bean allocate and
de-allocate instances from the pool per session bean invocation. This way no
state needs to be passivated/activated.
We have customers that have done this sort of thing for CICS connections
with good success.
-Chris.
> -----Original Message-----
> From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, March 22, 1999 10:29 AM
> To: [EMAIL PROTECTED]
> Subject: EJB Activation/Passivation.
>
> I am writing an EJB that uses MQSeries.
>
> The bean is a stateful session bean.
>
> Since MQ series is an external resource and the classes are not
> serializable
> during passivation I close the connections and set the objects to null.
> Then, when the bean is activated, I reconnect to MQ Series.
>
> These beans are used over a long period of time during which
> activation/passivation occurs many times.
>
> I would like to be able to create the connection once. Use the connection
> for an extended period of time. Then close the connection.
>
> In regards to the stateful session bean the EJB spec. says:
>
> "In advanced cases, a session Bean's conversational state may contain open
> resources. Examples of this are: open files, open sockets, and open
> database
> cursors. It is not possible for a container to retain open resources while
> a
> session Bean is passivated. A developer of such a session Bean must close
> and open the resources using the ejbPassivate and ejbActivate
> notifications."
>
> However in regards to the entity bean the spec. says:
>
> "The ejbPassivate() method gives the enterprise Bean the chance to release
> any resources that should not be held while the instance is in the pool
> (these resources typically had been allocated during the ejbActivate()
> method)."
>
>
> Is there any way that I can avoid reconnecting each time the bean is
> passivated/activated?
>
> Do the same rules regarding open resources for session beans apply to
> entity
> beans?
>
>
> Thanks,
>
> Phillip Schroder
> Senior Software Engineer
> Carreker-Antinori, Inc
>
> [EMAIL PROTECTED]
>
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