[omniORB] POA::deactivate_object and id_to_reference

[Duncan Grisby]

On Thursday 6 November, Rene Jager wrote:

> > The best way to know when the last request on an object has finished,
> > and it has been successfully deactivated is to use a POA with a
> > ServantActivator. That way, the etherealize method will be called when
> > the object is deactivated.
> 
> but I'm using default servant(s)...

Oh well, you're out of luck then...

> I realize that isn't an omniORB issue, but a CORBA spec issue; wouldn't
> it be nice to be able to check whether an object is requested to be
> deactivated. If I understand the spec correctly, it is not possible to
> check if an incoming call is the last or that deactivation is requested
> when using default servants. Now it is not possible to know when to
> clean-up... the solution I use now is to have some sort of "garbage"
> collector that scans for data of requested deactivated objects, and
> cleans up if the objects are really deactivated (catching
> ObjectNotActive exception). I don't like it, but I didn't see any other
> way right now. Is it a design flaw wrt CORBA specs or am I missing
> something? 

You're right that there is no way to know these things. The ORB / POA
knows, of course, so you could add an API to it to expose the
information, but not in a CORBA standard way.

If you feel strongly about it, you could submit an issue to the OMG.
Don't hold your breath waiting for them to deal with it, though.

Cheers,

Duncan.

-- 
 -- Duncan Grisby         --
  -- duncan at grisby.org     --
   -- http://www.grisby.org --