JCA sample implementations

Question

I need to develop a JCA adapter and am looking for some references. I searched on Amazon, and found only 2 JCA books and one of them has pretty bad comments. So I guess that

Answer 1

Inbound sample at google code: http://code.google.com/p/jca-sockets/

Other outbound on javaworld: Build your own J2EE Connector Architecture adapter

Hope they could help.

As Alex said, 'Have the hard days!':)