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List:       kde-devel
Subject:    Re: Another quick CORBA q.
From:       Lotzi Boloni <boloni () cs ! purdue ! edu>
Date:       1999-08-03 17:16:07
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> I want to do something like this:
> 
> interface MyInterface
> {
>   void addObject(in MyObject obj);
>   MyObject object(in string key);
> };
> 
> Is this possible without defining the interface for MyObject ?

  You don't have to define an interface, but you have to declare 
the structure in the IDL - as a conclusion, you must use the CORBA
datatypes (CORBA::Short and so on). 

> I'd really like to be able to keep my existing code (for MyObject and
> all associated types) rather than having to switch all of it to use STL and
> CORBA types.

  I know it seems a nuissance. The problem is the following: the CORBA
datatypes are platform, implementation, language and compiler independent.
A client running Java+Visibroker on a big endian machine should be able to
access  a server running C++ + MICO on a little endian machine. The
conversion should happen automatically at marshalling/unmarshalling. 

  Making the conversion to the CORBA datatypes whereever you are
presenting/getting data from the network is a small price to pay for this. 
And actually is a trivial job, because most CORBA datatypes map to
something very simple and can be handled by simple assignments. (But it is
still a nuissance).

> If I could just pass something like a void * and cast it I'd be happy :)

  There is something called type "Any". I would not recommend it.

             Lotzi


            

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