Zach Laine wrote:
I did something stupid with my serialization code. I blithely changed the names of several polymorphic classes everywhere they appeared in the code, since they had moved out of a class into that class's namespace (e.g. SomeNS::View::Primitive became SomeNS::Primitive). Several months later, I discovered that I could no longer read old binary archives, because I was using Boost.Serialization's BOOST_CLASS_EXPORT() macro, and this macro was now registering the Primtive type with the name-string "Primitive", instead of "View::Primitive", which is how it was saved in the oldest archives.
Ouch.
would it be technically possible to add a BOOST_CLASS_EXPORT_ALIAS() macro, or some such? If it is possible, I'm willing to supply the implementation.
I might be possible by hacking your own copy of extended_type_info.hpp. I don't think we'd want to include such thing in the library. So I would suggest: a) make the hack b) make small program which loads your old archives and creates new ones. This should be very easy. c) Forget this ever happened. Robert Ramey