I wonder about exeptions. EJB require at least RemoteException
to be declared. There are no checked exceptions in JavaBeans patterns
except for constrained propereties. But JavaBeans patterns for
accessor methods still applicable with minor adaptation.
JavaBeans Event model require support from tools, because client
have access only to EJB Object. I think that JMS better fits EJB
as event model then something like to what was done in CORBA
Component Object Model.
But JavaBeans can be generated to warp EJB Remote interface and
to introduce JavaBeans compatible event model and property access
if modeling tool was used for application design.
Constantine
Tom Valesky wrote:
>
> On Thu, 8 Apr 1999, Anthony Eden wrote:
>
> > Has anyone come across a situation where an EJB could also be a JavaBean. By
> > this, I am suggesting that the JavaBean can be customized in a JavaBeans
> > compliant builder and then be distributed to an EJB compliant container and
> > executed as an EJB?
> >
> > Is this totally out there? Are there unresolvable conflicts between the two
> > design patterns? Have I forgotten my medicine?
> >
> > Thanks for your thoughts.
>
> Interesting question. Off the top of my head, I don't see any reason why
> this couldn't be done:
> - the requirements for a Java class to be a bean are pretty
> minimal
> - the java.beans classes and the javax.ejb classes are pretty
> orthogonal
>
> Admittedly, I haven't done much with "plain old" JavaBeans in quite some
> time, so there might be some problem that I'm not seeing.
>
> I'm not sure how distribution would work; IIRC "plain old" Beans are
> JARred as serialized class instances, whereas EJBs are JARred as
> serialized deployment descriptors. If there's a way around this, it should
> work OK -- Customizers and the like should just be ignored by the EJB
> deployment process, and the EJB stuff should be ignored by the JavaBean
> environment.
>
> Has anyone tried this yet?
>
> ===========================================================================
> Tom Valesky -- [EMAIL PROTECTED]
> http://www.patriot.net/users/tvalesky
>
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