On Thu, 22 Feb 2001, Johan Carlsson wrote:
Casey Duncan <casey_duncan@yahoo.com> wrote:
Yes, you always get all the meta-data. However, does anyone know how the "used" argument of ZCatalog.searchResults works, or why you would use it?
'used' tells you the names of the indexes which actually participated in the search (as distinct from those you asked for).
What does this meen?
Example, What's the different between:
searchResults(used=(index1,index2), index1='kalle', index2='kaviar')
and;
searchResults(index1='kalle', index2='kaviar')
There is no practical difference, unless you are "federating" queries across multiple catalogs; the 'used' parameter is there solely to accumulate a record of the indices used in the search.
(Are used supposed to be a tuple?)
It should be something supporting the mapping interface. Here is how it is used (from 'lib/python/Products/ZCatalog/Catalog.py'): if used is None: used={} for i in self.indexes.keys(): try: index = self.indexes[i].__of__(self) if hasattr(index,'_apply_index'): r=index._apply_index(args) if r is not None: r, u = r for name in u: used[name]=1 In other words, "Nothing to see here; move along." :) Tres. -- =============================================================== Tres Seaver tseaver@digicool.com Digital Creations "Zope Dealers" http://www.zope.org