[Zope] Re: Simple ZCatalog question

[Tim Moore]

Tim Cook <tim@freepm.org> writes:

> Tim Moore wrote:
> > 
> > Tim Cook <tim@freepm.org> writes:
> > 
> > > Tim Moore wrote:
> > >
> > > > 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 :-)
> > >
> > > Been there, done that, found it in the mailing list archives.
> > > It should be a TextIndex.
> > 
> > OK, thanks but then what should the actual query contain?
> > --
> > Tim Moore
> 
> Okay, I misunderstood the problem.  Create a Z Search Interface and
> study the code generated to see how to query the catalog.

No, I understand the basic query syntax.  What I'm trying to do is
create query which returns all of the objects of type 'Timeslot' that
have some non-null value for their 'archive_url' property.  It's the
second half of that query that I can't figure out...

Catalog(meta_type='Timeslot', archive_url='???')

I've tried archive_url='*', but that doesn't work.  Is this even
possible using ZCatalog?
-- 
Tim Moore