[Castor] Mapping and inheritance

[silvin pedcervo]

Hi,
I've played with a simple example with Castor and i must say it's a really nice tool imho. Now, i'm wondering about the way to use inheritance with it.
Let's say I've got :
- a base Question class
- QuestionA, QuestionB classes that inherits from the simple Question class
- a Questionnaire class, object of that class contains sthg like a Vector of Question objects that can be instances of either QuestionA or QuestionB.
Any idea?
I hope this is not a too dumb question, if so, all my apologizes.
Thanks a lot in advance
Cheers
silvin