On 10/3/06, Thierry Florac <[EMAIL PROTECTED]> wrote:
- generally speaking, is it better to keep a single "big catalog", or a set of many catalogs, each of them indexing a smaller set of classes ? I suppose that querying is more simple with a single catalog, but what about general performances ??
That completely depends on what you are gonna do. I would say that you should have one catalog, except for specail cases, where you index a certain type only to do a certain type of lookups. (In those cases, you often don't even need a whole catalog, but a BTree is often enough).
- I have to index "main content", but also "reference" classes which are used to classify my main content (example : I describe "forests" in a first step and afterwards, my main contents can be affected to one or more forests). In such a case, I want to make queries concerning forests themselves, but also queries about main content concerning forests they are attached to (to get, for example, every subject attached to a given forest). In this case also, is it better to keep track of the reference itself (myContent.forest = myForest) or of an attribute of the reference (myContent.forestId = myForest.uniqueId) ??
I'd go with the attribute, although I guess a field index should be able to index the object directly (haven't tried though).
- perhaps a stupid question, but what's the best method to get the equivalent of Zope2's "meta_type" indexing, to only get instances of a given class, when queried indexes are applied to several classes (example : I use adapters to handle workflow publication on a wide set of classes, and I want to retrieve contents of a given class in a given workflow step) ??
Hmm. What a good question. :) -- Lennart Regebro, Nuxeo http://www.nuxeo.com/ CPS Content Management http://www.cps-project.org/ _______________________________________________ Zope3-users mailing list Zope3firstname.lastname@example.org http://mail.zope.org/mailman/listinfo/zope3-users