[Zope3-dev] Re: RFC - Partial Adapters

[Steve Alexander]

Garrett Smith wrote:
> Jim Fulton wrote:
> 
>> I see partial adapter uses as being relatively limited. <shrug>.
> 
> 
> I'm trying to 'get' this concept. It looks like this is a facility to 
> express one-to-many relationships between objects in terms of an interface.
> 
> In your example, is ISublocations merely a marker interface?
> 
> It's also not clear to me how the term 'partial' applies to these adapters.

Rather than get the single adapter that is more appropriate, you get all 
of the adapters that match.

Each adapter contributes one "part" of the total results. So, each one 
is a partial adapter.

In the example, each ISublocations adapter tells you about some 
locations that exist under the location being adapted. If you iterate 
over the matching partial adapters, and get all of the locations from 
each partial adapters, you will have all of the locations under the 
object you originally adapted.

--
Steve Alexander