I think it would be great if MantaRay would support JCA.
Adding this functionality should handle:
1) Inbound (asynchronous message flow) and Outbound
(synchronous message flow) communications
2) Support of distributed (XA) and local transactions.
3) Automatic recovery of indoubt Xids via
Full JCA 1.5 support would be a nice addition to the
MantaRay project as it would make integration between
MantaRay and various application servers much easier.