shark and null pointers, elegant solution?

Hi again,

Another curiosity with shark corba interface.
corba in itself does not allow null pointer to be returned
from methods. However lotso f shark methods seems to return
null when no data is available (like no description for an activity
or no activity associated with AuditEvent).
Every time this happens, it throws a BAD_PARAM Corba exception.
Does anyone have an elegant way to handle those problems? putting bunches

of try {
   activity = event.activity();
} catch (BAD_PARAM p){
    if (p.minor != 201)
	throw p;
}

around each method subject to sending a null is a pain in the ass :s

Thanks.
-- 
David Delbecq
Royal Meteorological Institute of Belgium

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