[Zope-dev] Externalize or Adapt? (ZPatterns)

[Mike]

Mike wrote:
> 
> > I will add a "retrieveItem" method to the Specialist which, instead of
> > accessing a rack in the local specialist (the default implementation), it
> > will instead call (for example) SkyDivers.getItem().  Thus, when you call
> > Customers.getItem(), you will actually get an object from the SkyDivers
> > specialist.  In other words, I make the horizontal domain specialist
> > delegate to the vertical specialist.

Maybe the best way is to put a 'thumb' data source into Customers
instead of native one. This thumb should translate all messages to
SkyDivers' data source. I'm just considering on specialized racks which
implement non-standard api, such as 'findItem( criteria)',
'itemValues()' or something similar.

By the way, racks should have a kind of 'scanning' api, like Zope's
Folders, at least they should have itemIds() method.

Mike