[Zope] Products breaking other Products?

[James W. Howe]

At 12:14 PM 2/11/00 -0600, Tres Seaver wrote:
>"James W. Howe" <jwh@allencreek.com> wrote:
> >
>[...]
> >
> > My question is this, why should a product unrelated to my product cause
> > problems with my ZClasses?  I feel a bit uncomfortable with the notion that
> > one product can seemingly affect another.  I don't believe any of my code
> > relied on anything relating to the PTK.  Can someone explain what might
> > have happened?
>
>When Zope starts up, it runs through each Product, importing it as a Python
>module.  My guess is that the broken PTKBase was earlier in the list than your
>custom product, and that an exception propagated uncaught out of it,
>interrupting the normal product loading.  If this is so, then we need to 
>look at
>hardening Zope's product loading mechanism against such behavior.

The strange thing is that none of the products themselves looked broken and 
I was able to add new instances of ZClasses contained in my product.  Only 
existing ZClasses belonging to my product displayed as broken.  I don't 
know what order Zope brings products in, but my product comes before the 
PTKBase product if you sort alphabetically.  I'll admit that I don't know 
much about Zope internals, but something seems wrong if installing one 
product breaks things in another.

James W. Howe				mailto:jwh@allencreek.com
Allen Creek Software, Inc.		pgpkey: http://ic.net/~jwh/pgpkey.html		
Ann Arbor, MI  48103