for an arbitrary incoming and outgoing connection to an EIS resource you should
look at

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

I am not sure if anyone has a JCA adapter to do what you want, so you will
probably have to write your own. there are a few getting started examples
around. once you get past the hello world stage they are not to hard to write.

creating a JNDI service provider may also work. they easy to write a basic one
but might not meet all of your transactional and resource pooling needs. [Message sent by forum member 'radix_zero']

http://forums.java.net/jive/thread.jspa?messageID=474207