[Zope] zCatalog and subobjects

[Chris McDonough]

ZCatalog doesn't do well on hierarchical searches like this.  The way
you're doing it (without some sort of change to your objects'
structures) is pretty much the only way.  There's a "ZTopics" product
floating around that is supposed to provide functionality like this, but
1) I don't know if it's released, 2) I've never used it.

You *could* add a method to your "superobjects" that returned the
meta_type of all of its subobjects and add that to the Catalog index,
e.g.

def getChildMetaTypes(self):
   return map(lambda x: getattr(x, 'meta_type'), self.objectValues())

then add getChildMetaTypes as a keyword index...

then...

for x in Catalog.searchResults(getChildMetaTypes="My Kind Of Object"):
     ...





Menard.Jean-Francois@hydro.qc.ca wrote:
> 
> (Post #2)
> I'm trying to search a zCatalog to find all the objects containing a certain
> type of sub-object.
> 
> Right now, I use a dtml-if inside the result loop, but the result count is
> obviously wrong.
> 
> There must be a better way to do this, right?
> 
> Jean-François Ménard
> Intranet DPAS
> Pratiques d'affaires et orientations
> *        (514) 840-3000  poste 3939
> *  (514) 840-5585
> *  menard.jean-francois@hydro.qc.ca
> *         855 Ste-Catherine est, 6e étage
>               Montréal, Qué. H2L 4P5
> 
> _______________________________________________
> Zope maillist  -  Zope@zope.org
> http://lists.zope.org/mailman/listinfo/zope
> **   No cross posts or HTML encoding!  **
> (Related lists -
>  http://lists.zope.org/mailman/listinfo/zope-announce
>  http://lists.zope.org/mailman/listinfo/zope-dev )

-- 
Chris McDonough
Digital Creations
Publishers of Zope - http://www.zope.org