[ZODB-Dev] Convert a ZODB 3.2 -> ZODB 3.3

[Chris Cioffi]

Ah.  Yeah, the reason I moved from v3.2 to (then beta) v.3.3 was b/c I
was trying to be slick with some of my object behavior.  Using
Persistant as a base class let me have cleaner code....  Now I pay the
price :(

Maybe I'll dump the old data to text files (or something) and
reconstruct the objects in the new version....

I think playing with the raw pickles would be more effort than this
problem is worth.  (In a worst case I can re-process the data over a
weekend...)

Chris


On Thu, 7 Oct 2004 10:57:51 -0300, Christian Robottom Reis
<kiko at async.com.br> wrote:
> On Thu, Oct 07, 2004 at 09:31:20AM -0400, Chris Cioffi wrote:
> > I've got a stand alone ZODB app.  I can create new file storage files
> > no problem, but now I need to access the data from an older v3.2 file
> > storage file and I'm getting the error:
> >
> > No handlers could be found for logger "ZODB.FileStorage"
> > C:\Python23\Lib\site-packages\Persistence\__init__.py:25: UserWarning:
> > Couldn't import the ExtensionClass-based base class
> > ...
> 
> Well, it seems you have an ExtensionClass-based class stored in it. I
> haven't actually run into this problem myself but I understand you might
> have.
> 
> I'm not sure how to advise you here; Tim probably knows more about this
> than I do. I can explain what the problem is though: one or more
> instances saved in your ZODB file inherits from Persistence.Persistent
> (hardly surprising), and Persistent is gone from 3.3, replaced by a
> non-ExtensionClass-based Persistent class.
> 
> (I'm going to stop now because my next suggestion is going to be
> manipulating raw pickles and seeing if things break.)
> 
> Take care,
> --
> Christian Robottom Reis | http://async.com.br/~kiko/ | [+55 16] 3361 2331
> 


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