[Interface-dev] Class -> interface adapters, and design question

[Jim Fulton]

Itamar Shtull-Trauring wrote:
> Hi,
> 
> I've started the port of Twisted's components, and I've got some
> questions.
> 
> I can't figure out how to register a class->interface adapter.
> aRegistry.register([Klass], [IFoo], '', AdapterClass) doesn't work.

You want:

   adapter.aRegistry.register([implmentedBy(Klass)], [IFoo], '', AdapterClass)

The first argument is a seqience of specifications.  You get the specification
for a class using implementedBy.

> I decided that Twisted would have its own (global) registry, and append
> it to z.i.interface.adapter_hooks. Make sense?

Is that because you don't want to depend on zope.component?

Note that zope.interface.adapter.AdapterRegistry doesn't actually
provide adapter factory sementics.  That's what
zope.component.adapter.GlobalAdapterService does.  I'm open to providing
those sementics in zope.interface.adapter.

> When the code is starting to actually pass tests and is not in the midst
> of major surgery I'll post link to source.

Cool

Jim

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