[Zope] Export format documentation

[Sébastien VINOT]

> -----Message d'origine-----
> De : Andreas Jung [mailto:lists at zopyx.com] 
> Envoyé : jeudi 8 juin 2006 14:48
> À : Sébastien VINOT; zope at zope.org
> Objet : Re: RE : [Zope] Export format documentation
> 
> 
> 
> 
> --On 8. Juni 2006 14:44:39 +0200 Sébastien VINOT 
> <sebastien.vinot at logisphere.fr> wrote:
> 
> >>
> >> >
> >> > I'm wondering if it is possible to load datas for a zexp
> >> file without
> >> > the old product and then build new instances of my new
> >> product. That
> >> > is why I'd like to know if there is a good documentation 
> concerning 
> >> > the internal structure of zexp files.
> >>
> >> The .zexp files are Python pickles. The XML generated through 
> >> export/import is basically an XML representation of the Python 
> >> pickle. The most straight forward solution would be to write a 
> >> migration script for your stuff and
> >> not to look into pickles...but you can of course follow the
> >> pickle road if
> >> you like it the hard way :-)
> >>
> >> -aj
> >
> > You're right, I did not think about XML : thanks for the very good 
> > idea !
> 
> Possibly my reply wasn't clear enough. The pickle format 
> (binary or XML) 
> appears too low-level in order to write a reasonable 
> migration script. The recommended solution would be to write 
> a reasonable migration on the 
> application level based on your current data...
> 
> -aj
> 

That's right I misunderstood your answer. Thanks for your explanations.

Sebastien.