[Zope] ZCatalog Strategy

[Mark Gibson]

I'm struggling to weigh the cost of getObject() vs. the cost of adding 
more metadata to the catalog.  I'll explain my situation.

I have 10,000 widgets cataloged.  I do a path and date query that 
returns me maybe 12 of these.  Then I have a choice of calling 
getObject().getData() on each of these, or I could add getData to the 
catalog metadata.

Does the cost of calling getObject() for a dozen objects justify 
creating a new metadata field?

More generally how does a large amount of metadata in the catalog affect 
performance of queries?

The wisdom of those more knowledgeable than me would be appreciated.

Mark