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

From: Sergey Skorniakov (s.skorniakov_at_[hidden])
Date: 2004-12-03 12:06:05

Hello, Robert!
You wrote  on Fri, 3 Dec 2004 08:25:02 -0800:

 RR> Hmmm - I've considered that in the past in order to implement a
 RR> "memento archive" that could be used for do/undo functionality.  This
 RR> wouldn't be too hard as it would be an derivation from any existing
 RR> archive which specializes the archive save/load member templates for
 RR> pointers.

Thanks, I'll try to do it.

 RR>  In considering this, a couple of quesions come to mind like:
 RR> a) for collections, what if members are added/deleted between the save
 RR> and load.

In my case, it is impossible. I'm writing custom RPC and has difficulties 
with returning function arguments by reference or pointer.

 RR> b) This would basically replace the deep class assignment capability
 RR> which is often already built-in. Its not clear that using the
 RR> serialization is any better.

Yes, I need exactly such a replacement.

 RR> Robert Ramey

 RR> "Sergey Skorniakov" <s.skorniakov_at_[hidden]> wrote in message
 RR> 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
 RR> 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.

With best regards, Sergey.