The connector architecutre API is being defined as we speak (I hope),
and is supposed to be available someday in the future (rumor has it,
before JavaOne).
arkin
Peter Michael wrote:
>
> Hi,
>
> I've been following the threads on both the EJB and the J2EE mailing lists
> for
> quite a while now and it seems that a lot of posting have one of the
> following
> subjects: "How do I access my files from EJB", "Can I use multiple threads
> within
> an EJB", "How can I do loggin from an EJB", and so on. The answers go from
> "You can't.",
> "You should not do that", "It's against the spec but if you really have to
> do that,...",
> and this leads me to the conclussion that something is rotten in the state
> of J2EE.
>
> It's lacking the possibility to install your own services that can be
> sources of activity
> (EJBs are passive components, they are being driven by external requests)
> and interact
> with your EJBs in a container-safe manner (EJBs are not meant to provide
> such services,
> they are for writing business code!). To be able to write such services we
> would
> need a J2EE Resource Manager SPI (service provider interface) that defines
> the
> interfaces between the service, the container and the rest of J2EE, so you
> can
> integrate theses services with transactions, security and all the other
> stuff.
> So when you write a J2EE Applications, you write (or buy) your EJBs (which
> implement the
> business logic) and your RMBs (Resource Manager Beans - which implements the
> services you need, e.g. logging, file access, etc. ). Much better than
> having to
> work around the EJB spec all the time, I think.
> (I don't know how much of what I am proposing is already included in the
> J2EE Connector Architekture (JSR-16), but I think it doesn't define services
> that run inside the server, just connectors to other (mostly legacy) systems
> like ERPs.)
>
> Comments? Suggestions?
>
> Regards,
> Michael
>
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--
----------------------------------------------------------------------
Assaf Arkin www.exoffice.com
CTO, Exoffice Technologies, Inc. www.exolab.org
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