[omniORB] dynamic loading service

[Sai-Lai Lo]

Renzo,

It is possible to do what you want with the hook that is in place since
omniORB 2.5.0.

Check out the class 'loader' in <top>/include/omniORB2/omniORB.h.

I'll add to the user guide to make this feature more prominent.

If you can produce a working example of using this hook and loading
implementation DLLs, please share it will other users. I'm sure there are
many users interested in this functionality. 

Sai-Lai

>>>>> Renzo Tomaselli writes:

> 	I would like to setup an Omniorb2 service for NT with the capability to
> load object implementations on demand. It's pretty easy to achieve it with
> a simple resident object carrying a couple of methods such as load/unload,
> where objects to load are persistent (fixed key) and bound to a DLL by
> means of a config table. However it would be much more interesting to have
> automatic loading at the very first "touch" of such persistent objects;
> this would require the capability for the Omniorb2 BOA (in the server) to
> trap CORBA::OBJECT_NOT_EXIST, load the implementation DLL and try again.
> Much like the proxy SystemException handler, but on the opposite side of
> the wire.
> Since I didn't find such feature in the latest snapshot, where is the most
> suitable point to insert such hook at BOA level (thus modifying BOA sources
> off course) ? Had anyone got a similar need among Omniorb users community ?


-- 
Dr. Sai-Lai Lo                          |       Research Scientist
                                        |
E-mail:         S.Lo@orl.co.uk          |       Olivetti & Oracle Research Lab
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