On Mon, Oct 10, 2005 at 11:42:36AM -0600, Jared McIntyre wrote:
I've gone through the documentation, and I'm still unable to get this particular aspect of serialization working. I have two objects 'a' and 'b', and 'b' inherits from 'a'. I have a vector of 'a' pointers that may just be 'a' or may be 'b'. I've preregistered 'b', right before the vector serialization occurs, so that the serialization system should properly recognize that 'b' inherits from 'a'. However, only the 'a' pieces of each 'b' in the vector serializes. If I place all the 'b' items in a second 'b' containing vector, and serialize that afterwards, it properly discovers that the 'a' part has been serialized already and simply points to that reference. I don't really want to store this second 'b' vector. Is there a way to get a vector of a items to also serialize the 'b' part of the element if the item is a 'b'?
You might want to post some code that shows what's wrong. Have you tried informing the archives of the existence of derived 'b' via BOOST_CLASS_EXPORT(b)? And does your 'b' correctly serialize it's base class 'a' via base_object<> ?
Also, there is an issue in the documentation. In the "Pointers to Objects of Derived Classes" section, it has example registration code:
main(){ ... ar.template register_type<derived_one>(); ar.template register_type<derived_two>(); base *b; ar & b; }
I'm guessing that is supposed to be:
main(){ ... ar.register_type<derived_one>(); ar.register_type<derived_two>(); base *b; ar & b; }
Doesn't matter what order they're registered in. Just that they're registered. HTH, -t