[Zope-dev] Catalog class--does it support boolean queries?

Dieter Maurer dieter@handshake.de
Thu, 14 Dec 2000 23:48:01 +0100 (CET)


Marc Conley writes:
 > ....
 > Should boolean queries work using Catalog 
 > or is it
 > necessary to use ZCatalog instead to get that functionality?
 > ....
ZCatalog is nothing more than a thin wrapper around
Catalog (to make a Catalog a persistent object in ZODB).
All search facilities of ZCatalog are in fact implemented
by Catalog.

This implies: Catalog can do boolean queries.


Note: the catalog has notorious bugs (at least until
Zope 2.2.2). If it does not work, it may be one
of these bugs.


Dieter