Hi,
Does anyone have a good approach to changing the class of an object
already stored in the ZODB?
A site is using classes defined and customised in a product on the
filesystem, and I want to split the product into two to separate the
unmodified vanilla product, and customisations. I found a script from
shane when I googled which purported to do this, but I did not
understand exactly what it did and so am a bit nervous of using it.
Also, it appeared to do it all in one transaction, which would not be
practical for this site (too many objects).
I had originally been envisaging doing something in __getstate__ for
these objects, so when they were retrieved, they were updated and marked
as having been changed so they would be committed at the end of the
transaction. But I don't really know exactly what!
I don't think it will work to use module_aliases because there will
still be a class that can be imported from the original location.
Any help much appreciated,
Miles
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