[omniORB] converting servant * to objref in BOA

[David Riddoch]

Andy,


The difference between a servant (object implementation) and object
reference in CORBA is a bit like the difference between an instance of an
class in c++, and a pointer to it.

In c++ you get from an instance to a pointer by taking the address.  In
CORBA you get from a servant to an object reference by invoking _this().

Note that you have to activate your object _before_ you can get hold of
its reference.  Also in omniORB all servants used with the BOA _must_ be
heap allocated.  See the examples in <omniORB>/src/examples/boa/.


Cheers,
David




On Thu, 9 Nov 2000, Andy Faibishenko wrote:

> I have some code which does the following.
> 
> I have a class A which I pass into a remote CORBA interface.  The code on the remote side then calls back on a method in class A.  
> 
> I've declared A as follows
> 
> class A : public _sk_A
> {
> ...
> }
> 
> Then when I call the remote interface, I invoke
> A a;
> remoteObjRef->CallMeBack(&a);
> 
> This worked under Visibroker BOA but the OmniOrb3 complains about expecting a _objref_A *.  The docs mention OmniOrb requiring objrefs but how do I convert my A * to an objref *.  Am I inheriting from the wrong class?
> 
> Thanks.
> -Andy
> 
> PS  I need to port this to OmniOrb BOA not POA.