Actually this is more correct than what I said. The strong type checking of
Java won't allow a method invocation from a class loaded by one class
loader on the same class loaded by another class loader, even if they
have exactly the same bytecode. So only intra-ear calls are optimized.
I'll double check this with a test case but this is how the code reads.
----- Original Message -----
From: "Julian Gosnell" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, July 10, 2001 12:27 PM
Subject: Re: [JBoss-user] In VM optimization between JBoss and Servlet
Container
> This is my understanding of the situation.
>
> Provided that EJBs and Servlets/JSP are packaged within the same EAR file,
the
> J2EEDeployer will coordinate their deployment to the EJB and Web
Containers.
>
> This coordination involves passing the same ClassLoader to both
Containers.
>
> Any components deployed with the same ClassLoader SHOULD be able to talk
to
> each other directly (without serialisation of the call).
>
> i.e. If you have two components with high-bandwidth needs between them,
deploy
> them within the same EAR.
>
> If you deploy them separately you are not giving the J2EEDeployer any
> information about which other components you would like to share a
ClassLoader
> with - so it has no way to perform this optimisation for you.
>
> I'm speaking with experience on the WebContainer side and extrapolating
that
> to the EJB side - so I am open to correction on this.
>
>
> Jules
>
>
>
> "C Murphy @ Intechtual" wrote:
>
> > Hello,
> >
> > I'm working on a presentation for a client and I have a quick question
> > about the optimization of in VM EJB calls in JBoss. I read in the
> > documentation about how EJB-to-EJB calls are automatically optimized by
> > bypassing the network layer. I didn't find any specific documentation,
but
> > it makes sense that calls from the Web/Servlet container to EJBs would
also
> > be optimized when they are running in the same VM.
> >
> > My question is: Is this true for the in VM Servlet container in all
cases?
> >
> > The documentation talks about the differnce between internal references
> > (Web App and EJBs deployed in an ear) and external references (deployed
> > serperately). Are the calls always optimized because they're in the
same
> > VM or does deploying them in seperate jar files negate the
optimization?
> >
> > I appreciate the help
> >
> > Chris Murphy
> >
> > _______________________________________________
> > JBoss-user mailing list
> > [EMAIL PROTECTED]
> > http://lists.sourceforge.net/lists/listinfo/jboss-user
>
>
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