[ZODB-Dev] problem with broken

[Marius Gedminas]

On Wed, Nov 05, 2008 at 11:48:35AM +0100, Christian Theune wrote:
> On Wed, 2008-11-05 at 11:31 +0100, Laurence Rowe wrote:
> > Broken objects occur when the class for a pickled object cannot be 
> > imported. To change the location of a class, you need to provide an 
> > alias at the old location so that the object can be unpickled, i.e. 
> > MyOldClassName = MyNewClassName. You can only remove MyOldClassName 
> > after you have updated all of the pickles (with your code below).
> 
> Note: We made a relatively good experience by removing those symbols
> from their original modules and provide a generation which first sets up
> dummies, then runs migration code to remove/rebase those objects and
> then remove the dummies again.

How do you do that?  Monkey-patching?

> That way you can get your source code clean of 'BBB' code in a single
> generation.

Marius Gedminas
-- 
F U cn rd dis U mst uz Unix.
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