[ZPatterns] getting multiple dataskins from a specialist at once?

[ra@burningman.com]

Phillip J. Eby wrote:
> At 06:11 PM 6/17/03 -0700, ra@burningman.com wrote:
> 
>> hi there,
>>
>> i've got a zpatterns application where the back-end data access is, 
>> unfortunately, very slow.  currently, when i need to get a large 
>> number of dataskin objects from a specialist, i have to call 
>> 'getItem()' separately for each one, and this takes an unbearably long 
>> time when there are more than just a few objects in my set.
>>
>> it's of course a simple matter to construct a query that gets all of 
>> the required data all at once.  does anyone know of a way to have a 
>> specialist return a large number of dataskin objects using only a 
>> single query on the back end?
> 
> 
> Not without customizing the specialist's code.

steve spicklemire seems to have done just this w/ his ZApp... i'll peek 
at that and see if it meets my needs.

> In PEAK, however, 
> there's a new kind of specialist called a QueryDM that can do this (i.e. 
> load state for a large number of objects at once).  Unfortunately, 
> PEAK's web-publishing framework isn't ready yet, and as far as I know 
> nobody has created any integration for PEAK into Zope 2.

i haven't started playing w/ PEAK yet, but i'm thinking about using it 
(w/ wxPython) to produce a native (i.e. non-web) gui app around my data. 
  then, as PEAK's interaction w/ Zope3 improves, development of a Zope3 
based web front end should follow fairly naturally.

for now, though, i've just gotta keep plugging away at my Zope2/Plone app...

thanks for the replies!

-r


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