[Boost-users] Re: serialization library - reloading objects

From: Robert Ramey (ramey_at_[hidden])
Date: 2004-12-03 11:25:02

Hmmm - I've considered that in the past in order to implement a "memento
archive" that could be used for do/undo functionality.  This wouldn't be too
hard as it would be an derivation from any existing archive which
specializes the archive save/load member templates for pointers.  In
considering this, a couple of quesions come to mind like:

a) for collections, what if members are added/deleted between the save and
load.
b) This would basically replace the deep class assignment capability which
is often already built-in. Its not clear that using the serialization is any
better.

Robert Ramey

"Sergey Skorniakov" <s.skorniakov_at_[hidden]> wrote in message
news:copc31$q23$1_at_sea.gmane.org...
> Hello, All!
>
> Are there any way to load existing objects by base class pointer without
> creating new?
> Examination of input archives source code does not give me any idea how I
> can achieve it. I think I need some mechanism for runtime switching
archive
> object tracking behaviour in that way so all objects will interpreted as
> already created (or per-object tracking registration without actual object
> loading to pre-register pointer to object as already created before object
> loading).
>
> With best regards, Sergey.