Thanks for your feedback. I am in the process of designing the EJB
infrastructure, and I believe I am coming up with common issues that most
developers have faced. Is there a EJB design newsgroup?
Currently, I am only using entity beans. I have taken advantage of the
read-only setting in the optimizations section in WL. However, we have not
reached a final decision on an app server yet, so I am weary to rely on any
specific product features.
I have been reading alot about design patterns in EJB, particularly the
Session wraps Entity model which I will be using. My clients will be
calling a "helper" stateless session bean that will utilize my entity beans
and return a state object back to the client. By using a stateless session
bean, will the entity bean be "wrapped" in the session beans transaction and
thus the repeated store/load on every accessor method invocation eliminated?
What transaction attribute should I specify for my entity bean - supports?
If not, is grouping properties in to a single accessor method a better
approach?
Thanks.
> -----Original Message-----
> From: Chris Raber [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, June 13, 2000 6:14 PM
> To: [EMAIL PROTECTED]
> Subject: Re: ejbStore on accessor method
>
> Chris,
>
> Were are you controlling the transaction from? If you are transactionless
> it
> may be WL's policy to treat each invocation on the bean as a transaction
> (I
> think EJB implementors are free to interpret this part of the spec).
>
> If you want all the invocations to be in a single transaction, you should
> start a transaction from a higher level object (e.g. a session bean or
> from
> the client). Better yet, get all state you want from the bean in a single
> invocation using a "by value" style call.
>
> We have documented this and related issues in our Developer's Guide
> available at www.gemstone.com or www.javasuccess.com
>
> Regards,
>
> -Chris.
>
> > -----Original Message-----
> > From: Chris Brown [SMTP:[EMAIL PROTECTED]]
> > Sent: Tuesday, June 13, 2000 10:12 AM
> > To: [EMAIL PROTECTED]
> > Subject: ejbStore on accessor method
> >
> >
> > I am using WL 5.1.
> >
> > I have a BMP entity bean with a transaction attribute of supports for
> the
> > bean. I have noticed that for every access to my access methods
> (getXXX)
> > that ejbStore is being called. This seems very inefficient, can someone
> > explain why?
> >
> > Thanks
> >
> >
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