> It seems we're each one misunderstand the others. :-)
>
> I mean, we'll not have something like this direct in PSQL:
> java_plugin_call('MyClass.myProcedure');
>
> I.e., call a non registered (in FB) external procedure.

Bahhhh... I was never thinking in direction of extending the PSQL with
java_plugin_call... from the very beginning it was supposed to look like
a normal procedure with all strings attached (savepoints, grants).

Roman

P.S. BTW, did you read those two documents about the architecture in the
"Files" section of this group? They are old, but the idea is still the same.