[Zope] Simple ZCatalog question

[Dieter Maurer]

Tim Moore writes:
 > OK, I searched through how-tos and any other documentation I could
 > find, but I couldn't come up with an answer to this simple question,
 > so I'm afraid I have to turn to the list.
 > 
 > I'm trying to query a ZCatalog for objects where a particular property
 > (which I'm cataloging as a FieldIndex) is not empty.  I can't figure
 > out for the life of me what the syntax to do this is :-)
I fear this type of query is not forseen:

  you can try to emulate the query with a minimum range query and
  a sufficiently small minimal value.

  Look at the ZCatalog section in

    URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html

  for details.


Dieter