[Zope3-Users] querying the catalog

[Jim Fulton]

Duncan McGreggor wrote:
> 
> On Sep 30, 2005, at 11:31 PM, Alen Stanisic wrote:
> 
>> Not sure if it will help but whenever I had to look up a catalog I would
>> only do zapi.getUtility(ICatalog) and I noticed you are also providing a
>> name and context.
> 
> 
> Yeah, with or without the extra parameters, it always only returns the 
> root catalog instance.
> 
>> I also believe that if you are looking up a catalog by name as you seem
>> to be doing it is not enought for the catalog object to be named
>> accumac_catalog but you also have to register it as the name ('Register
>> As' field in New Utility Registration) during catalog creation.  I
>> usually leave 'Register As' blank as I only ever needed to get catalog
>> by ICatalog interface only -> zapi.getUtility(ICatalog)
> 
> 
> When I created it, I set "register as" to "accumac_catalog". Based on 
> the experience you shared, I deleted my catalog and did not give it a 
> name upon creation. zapi.getUtility(ICatalog) now works, as it gets the 
> "sub-site's" catalog in the accumac/++etc++site/default directory.
> 
> Very strange. If I understood this more, or if there was expert-aided 
> interest, I would troubleshoot this. It may not be a bug, but there at 
> least seem to be issues of an anti-intuitive nature here...
> 
> Alen, thanks again for your assistance in this matter :-)

I suspect there was a problem of some sort with your original registration.
We normally use named local catalogs and haven't had a problem.

BTW, you should not pass the "context" argument to the component-lookup
functions *unless* you want to find a component in a different site.

Jim

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