[Zope-Coders] ZopeUndo bug fix

[Jens Vagelpohl]

+1 for at least 2.6 because we would need it for viacom's storage 
servers

jens

On Thursday, Oct 3, 2002, at 14:41 US/Eastern, Jeremy Hylton wrote:

> There is a seeming bug in Zope/ZEO that will cause problems for people
> who run the ZEO server that does not have access to Zope's lib/python
> directory.  In some cases, an App.Undo.Prefix object is passed from
> client to server.  If the server doesn't have access to Zope's
> lib/python, it won't be able to unpickle the Prefix object.
>
> I think this is a bug, because it is very desirable to use separate
> lib/python directories for Zope and ZEO.  If you don't, the ZEO server
> can end up loading and attempting to install all sorts of Zope
> products as a side-effect of conflict resolution.
>
> To make Undo work in a segregated Zope/ZEO environment, I've added a
> ZopeUndo package that contains the Prefix object.  I'm going to change
> App.Undo to get the Prefix class from ZopeUndo.  Then I'll package
> ZopeUndo with ZODB3.  This solution will allow people to use
> segregated Zope/ZEO configurations and still use undo fully.
>
> I'd like to call this a bug fix and backport to 2.5 and 2.6.  Would
> there be any objections?
>
> Jeremy
>
>
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