you can also refer : Developer Guide> Developing Connectors
http://docs.sun.com/app/docs/doc/819-3672/bealk?a=view
On Fri, 2007-12-14 at 12:22 +0530, Jagadish Prasath Ramu wrote:
>
> On Fri, 2007-12-14 at 05:58 +0000, Stephen Connolly wrote:
> > We have a number of resources that need to be, essentially, server
> > singletons shared across all applications on the server instance.
> >
> > These singletons manage access to an off-server resource via a TCP &
> > UDP messaging stack and then map those messages into an object model
> > with the observer event model.
> >
> > I don't want to have each enterprise app forking a new TCP & UDP set
> > of channels with event parsers building the object model and
> > propagating events as this will generate extra load on the far end
> > (which has limited resources)
> >
> > To my mind the RAR fits exactly what I want, but mostly I just see
> > things that can be mapped to JMS.
> >
> Yes, ResourceAdapter will help to solve this issue. JMS support to
> app.server happens through ResourceAdapter. Any type of external system
> can be made (by developing a RAR) accessible to application deployed in
> the app. server.
> > How will this look to deployers, how will they configure the JNDI
> > lookups? Will those using our API be able to just use resource
> > injection to get our singleton...
> They will lookup a connector resource.
> >
> > @Resource
> > private com.mycompany.MyStackConnectionProxyFactory myStack;
> Yes, possible.
> >
> > How will they package their applications? If they include the rar will
> > that result in two connections again (which they get with the current
> > jar approach that we use), or will the container see that it's the
> > same rar as already deployed and expose that rar's classloader through
> > some fancy rar magic.
> RAR will be deployed separately. Applications will use resources.
> (connector resource).
>
> You can refer
> http://java.sun.com/javaee/reference/code/index.jsp
> J2EE 1.4 sample apps : /j2ee14/connectors/apps/mailconnector
>
>
> Thanks,
> - Jagadish
> >
> > I've more questions, but I think they can wait for now!
> >
> > -Stephen
> >
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