[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.

As a followup to a message I just sent, I realize that in addition to the 
PTKBase product, I also had the DemoPortal product installed.  This product 
did appear in the list before my product and so could have caused the 
problem you describe.  What may have happened is that I had the DemoPortal 
from the older PTKBase.  I then upgraded to the newer version.  Perhaps 
this broke the older DemoPortal.  I do seem to remember having trouble 
deleting it (basically I wasn't able to delete it).  Now that I'm back to 
using the older PTKBase, I was able to delete the DemoPortal product from 
my list (along with PTKBase).

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