Ahhh... Got it working now. Thanks. :) Not sure I know how to activate ZCatalog searching though, or if it is on all the time; the example only mentions ZCatalog once when it deletes it. What determines if a search is a raw object-database search and when it uses the ZCatalog? Always returning the objects is going to a bit slow, though. Couldn't it just return the Pluggable Brains if you search the ZCatalog; or at least have an option to only return them? Bye, -- Bjorn
-----Original Message----- From: Stephan Richter [mailto:srichter@cbu.edu] Sent: Monday, October 08, 2001 23:33 To: Bjorn Stabell Cc: Zope-dev@zope.org Subject: RE: [Zope-dev] ZCatalog searching for missing values
I just tried out ZOQLMethod as well. Couldn't get it to work, but it looks like really solid craftsmanship. I like the user-friendly way of selecting base object and the complete syntax. :) Some questions:
1. I couldn't get any query to work. I keep getting
exceptions.TypeError argument 2 to map() must be a sequence object
Solved. See below.
Here's an example query that I've tried
SELECT id WHERE title == '' RECURSIVE;
You can only select meta types (this is by design; I just don't want to deal with brains and all that stuff right now.)!! Did you see the help? It has a long example in there as well. But there is another bug. You have to specify FROM right now. I will fix that. Okay, is fixed for the next release.
So,
SELECT "DTML Method" FROM "." WHERE title == '' RECURSIVE;
should work.
2. Is the ZCatalog searching implemented? How do I activate it?
Yes, see the "Rather Lengthy Example".
3. Do you have any plans to implement JOIN?
No, for the reasons given above. You select only objects, not attributes.
BUT, patches are always welcomed!!! :-)
The exists function would be very cool.
I will look into this. Hopefully it will be not too hard to implement.
Keep up the great work. Hope this helps flush out some features :)
I hope I will. :-) Yes it does. If you and all the other Zope people could write me some arguments to support attribute selection, then I will look into it (but it will be not that easy).
Regards, Stephan
-- Stephan Richter CBU - Physics and Chemistry Student Web2k - Web Design/Development & Technical Project Management