[Zope-dev] RE: Subpath traversal interface (was RE: ANN: Python Methods 0.1. 7 up and over to DC) 7 up and over to DC)

[Michel Pelletier]

> -----Original Message-----
> From: Phillip J. Eby [mailto:pje@telecommunity.com]
> 

> It seems to me that what is wanted is a "traversable object", 
> rather than a
> traversable method.  That is, at least for the places where 
> I've wanted to
> use such a thing, I wanted to be able to define a 
> "__bobo_traverse__" with
> a PythonMethod.  But then, I don't want the whole path from 
> there either, I
> just want to be able to get the next element.  In any case, 
> it seems to me
> that the best way to do this is create a Traversable base 
> class that can be
> used in ZClasses, that defers __bobo_traverse__ to a method name
> ZopeTraverse or some such.  Then that method can be implemented in the
> ZClass however it is desired, whether by a PythonMethod, DTML 
> method, or
> even an SQL method, if appropriate.
> 
> IMHO, this doesn't belong in PythonMethods at all.

I think I agree there.  Subclassing traversability sounds cleaner.

>  (But 
> then, I don't know
> what the contributor was using it for, so perhaps some input 
> there would be
> useful.)

Evan?

-Michel