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

From: Robert Ramey (ramey_at_[hidden])
Date: 2004-12-06 13:25:07

Note:  the following is just speculation on my part - take with a grain of
salt.

"Sergey Skorniakov" <s.skorniakov_at_[hidden]> wrote in message
news:cp20fa$kbh$1_at_sea.gmane.org...
> 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.
>
> Its look like that I need to reimplement the whole basic_iarchive_impl. Am
I
> right?
>
I don't think that would be necessary nor would it be desirable.

The way I would go about is to make an "memento_iarchive" class as an
"archive adaptor".  This template would be used to alter the function of any
other existing archive to convert it into a "memento" archive.  See attached
sample.  This sample adapts any existing archive class to a "memento"
equivalent by overriding the serialization of pointers to simple copy of the
de-referenced data.

The attached sample does compile on two compilers.

Good Luck

Robert Ramey

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`
end