Tryin to develop a jca connector

Hi

I'´ve a package that allow applications connect to an IBM host using
sockets and 3270 telnet protocol.

I want to isolate and standarize such layer using JCA to run it as a
resource adapter in an application server.

I'm new to jca and reading specification is drivin me a little bit
confused. I' ve "googled" for sample code but the few I found are
simple db resource adapters implementations so I wonder if some one
could point me to a non db jca samples... or guides/books about this
matter.

I've found this sample code:

http://java.sun.com/developer/technicalArticles/J2EE/connectorclient/resourceadapter.html

but the article is similar to those I've read but I'm still confused.

I know I need to wrap my EIS connector with my resource adapter but
what I couldn´t see clear is where should I do it.

I supposed that it should be in the lower layer, the connection
implementation, but all the sample codes I saw make and instance of
this class but recommend to put the EIS code in the managedconnection
class.

I've a simple class called CICSSocket that make the connection with
EIS and with two methods read and write to allow those operation the
EIS throw sockets and a open method to open the socket.

If make an instance of CICSSocket in the Connection class constructor,
it will be a wrapper but I'll be returning a Connection instance, not
a CICSSocket instance, so how the AS or the client will call
CICSSockets methods ? How the AS could pass parameters to CICSSocket
to make the connection ?

What happen if I do the above in the ManagedConnection class as I saw
in various samples ? How will it work to wrap my class ?

So, I've a clear map of all but I really don't understand how all
components interact and how to do it and couldn´t found real samples
about it.

Could somebody please send me a simple sample code or explanation to
make me see the light ?

Thanks in advance

C

.

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