Re: [Boost-users] [serialization] Serializing derived template classvia base pointer

Subject: Re: [Boost-users] [serialization] Serializing derived template classvia base pointer
From: Robert Ramey (ramey_at_[hidden])
Date: 2013-01-17 15:01:24

Daniel Mitchell wrote:
> Hi everyone, has any progress has been made on a general solution for
> this problem? Given classes like these,
>
> struct base {
>  template<typename Archive>
>  void serialize(Archive& ar, unsigned version) { }
>  virtual ~base() = default;
> };
>
> template<typename T>
> struct derived : base {
>  template<typename Archive>
>  void serialize(Archive& ar, unsigned version) { ar & data; }
>  T data;
> };
>
> is it possible to serialize the derived type (with T unknown) via a
> base pointer? Sticking a call to register_type<derived> in
> derived::serialize doesn't seem to do it.

There are several demos in the examples directory which show how to do this.

Robert Ramey