Re: [Quantlib-dev] QuantLib-SWING: is it possible to use polymorphism?

[Luigi B. <lui...@gm...>]

On Wed, 2009-10-21 at 17:58 +0100, Andrea wrote:
> On 21/10/09 15:55, Luigi Ballabio wrote:
> > 	unfortunately, polymorphism doesn't currently work across
> languages.
> > 
> Indeed.
> I've tried to use directors and it seems to work well if there are no
> shared_ptr involved.
> 
> My problem now is [...] I don't seem to be able to create a shared_ptr
> in the target language.

There would be quite a bit of work to do.  You would have to:
- add a constructor to boost::shared_ptr in common.i so that it takes a
pointer;
- modify the exported payoff classes so that they no longer hide the
shared_ptr (e.g., export the actual PlainVanillaPayoff, not
PlainVanillaPayoffPtr) and enable directors;
- export the shared_ptr<Payoff> as a separate class;
- fix the other interfaces so that they work with the new classes.

Let me know if you get stuck in any of the steps.

Luigi


-- 

Green's Law of Debate: 
Anything is possible if you don't know what you're talking about.