[Zope] May be a problem with ZClass

[Tim Wilson]

On Mon, May 27, 2002 at 05:32:23PM -0400, Chris McDonough wrote:
> 
> This can happen when you import and export ZClasses (not ZClass-based 
> products, but actual ZClasses).  There is a subtle bug in the ZClass 
> registry code that can cause instances to refer to an older class 
> definition.

Presumably, this is the source of the problem I've been seeing where I
can't view the 'Advanced' tab of any of my ZSQL methods. I get the
following:

 Error Type: SystemError
 Error Value: Failed to import class _ZClass_for_ZPhotoAlbum from module
 Products.Photo

I had the old ZPhotoAlbum ZClass-based product installed ages ago.

> workaround is to export all of your ZClass-based products as well as all 
> the objects in your root folder and start with a fresh Data.fs, 
> reimporting everything as necessary.

Ouch. Sounds painful. You're saying each folder, method, script, etc. in
the root folder would have to be exported separately?

-Tim

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