Question on Transaction support

Hi again,
 
Thanks for your previous answers, most helpful :-)
 
now, is there any direct support for transactions in keel?
 
I don't remember seeing this anywhere in the docos.  Is there a transactable interface for components (entity and service components) ?
 
If not, is there any plans for this?  I think spring do deal with transactions, can we piggy back on the concepts they use?
 
in any case, would keel transactions be able to participate in a J2EE (ejb) transaction ?  I gues it's more like the other way around, since using ejb's in keel is just one of the options.
 
Please us know.
 
Too many questions for a day (specially for a saturday) I guess ;-)
 
Thanks, Carlos