I think you must call getObject() on the mybrains instance first to get the object! Andreas ----- Original Message ----- From: "Nicholas Henke" <henken@unholymess.com> To: <zope-dev@zope.org>; <zodb-dev@zope.org> Sent: Wednesday, May 29, 2002 16:05 Subject: [ZODB-Dev] ZODB, Catalog and actually using it Hello~~ I am playing with using the Catalog class in ZCatalog along with CatalogQuery to create a generic object layer on top of ZODB. I can index and search til I am blue in the face, and I always get the correct answers. Now for the problems... Say I have the following obj: class test(Persistent): variable = 1 def function(self): print self.__dict__ now if I do: catalog = Catalog() catalog.addIndex('variable', Fieldindex('variable')) catalog.addColumn('variable') obj = test() catalog.catalogObject(obj, id(obj)) catalog_query = CatalogQuery(catalog, "variable==1") results = catalog_query() for r in results: print r.variable # ok print r.getRID() # ok print r.function # NameError ...so I can get an object (a mybrains instance )back that allows me to print r.variable, but I cannot get r.function(). How does one do this? Is there a mapping between RIDs in the catalog and real objects somewhere? Do I need to do that mapping in an IOBtree (it would make the most sense since I am using id(obj) as the uid in the catalog)? Is there somewhere in Zope/google/web that does this? Thanks for any help!! Nic _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://lists.zope.org/mailman/listinfo/zodb-dev