[Zope3-dev] Re: partial adapters

[Garrett Smith]

Steve Alexander wrote:

> Garrett Smith wrote:
> 
>> Did partial adapters ever make it into 3.0?
>  
> Why do you want partial adapters?  Would subscription adapters do what 
> you need?
> 

It's the use case cited in the proposal -- multiple sources of 
'sublocations' (I'm calling them subobjects). I'm handling it with three 
adapters, one of which coordinates the use of the other two.

Here's what it looks like:

class ISubobjects:
   """Provides subobjects for an object."""

   def __iter__():
     """Iterates all of an object's subobjects."""

I'm using it as follows (obvious):

   for subobject in ISubobjects(object):
     doSomething(subobject)

One of the adapters knows about object attributes and another about 
container items. The third coordinates the use of the two, iterating 
object attributes first, then container items.

I'm happy with what I have now, but recalled that this was one of the 
drivers behind partial adapters. Though admitedly, I don't think I fully 
understood partials :-)

  -- Garrett