[Zope] (no subject)

[Aaron Payne]

Hi all,

I am getting an error when I query a ZCatalog.  I'm working using ZPatterns 
with Zope 2.3.1b3 (source release, python 1.5.2, linux2), Python Version 
1.5.2, System Platform freebsd4.

Error Type: ValueError
Error Value: __nonzero__ should return >= 0

Here is the scenerio leading to the problem.
1. Create an object in a rack with newItem()
     Search ZCatalog for the item and it is found.
2. Delete the item
     Search ZCatalog for the item and the error is produced.

Updating or Clearing the catalog resolves the problem. Here is the 
Skinscript method I use with the Catalog.

WHEN OBJECT ADDED CALL ProjectCatalog.catalog_object(self, 
_.string.join(self.getPhysicalPath(),'/'))
WHEN OBJECT DELETED CALL 
ProjectCatalog.uncatalog_object(_.string.join(self.getPhysicalPath(),'/'))
WHEN OBJECT CHANGED CALL 
ProjectCatalog.uncatalog_object(_.string.join(self.getPhysicalPath(),'/')), 
ProjectCatalog.catalog_object(self, _.string.join(self.getPhysicalPath(),'/'))

Another thing,  after I edit the item it is no longer indexed in the catalog.
Is this another version of the key error issue?

Traceback (innermost last):
   File /usr/local/etc/Zope2d/lib/python/ZPublisher/Publish.py, line 223, 
in publish_module
   File /usr/local/etc/Zope2d/lib/python/ZPublisher/Publish.py, line 187, 
in publish
   File /usr/local/etc/Zope2d/lib/python/Zope/__init__.py, line 221, in 
zpublisher_exception_hook
     (Object: Traversable)
   File /usr/local/etc/Zope2d/lib/python/ZPublisher/Publish.py, line 171, 
in publish
   File /usr/local/etc/Zope2d/lib/python/ZPublisher/mapply.py, line 160, in 
mapply
     (Object: catalogItems)
   File /usr/local/etc/Zope2d/lib/python/ZPublisher/Publish.py, line 112, 
in call_object
     (Object: catalogItems)
   File /usr/local/etc/Zope2d/lib/python/OFS/DTMLMethod.py, line 189, in 
__call__
     (Object: catalogItems)
   File /usr/local/etc/Zope2d/lib/python/DocumentTemplate/DT_String.py, 
line 538, in __call__
     (Object: catalogItems)
   File /usr/local/etc/Zope2d/lib/python/DocumentTemplate/DT_In.py, line 
652, in renderwob
     (Object: ProjectCatalog)
ValueError: (see above)

-thanks,
Aaron