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List:       zope
Subject:    Re: [Zope] Archetype or Product inheritance
From:       Dieter Maurer <dieter () handshake ! de>
Date:       2004-09-29 18:57:45
Message-ID: 16731.1449.468862.546868 () gargle ! gargle ! HOWL
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Bryan Simmons wrote at 2004-9-28 21:41 -0400:
>Suppose I have a zope product, or an Archetype-based content-type, like ATEvent.
>If I use __implements__ to define another content-type, will my new
>content-type inherit the
>ATEvent schema?

I do not think the "__implements__" does anything beside
a bit of documentation and support for a lookup by interface
during factory lookup (only used to create indexes, AFAIK)

It does not control schema extension...


Instead, you would define a new Archetype class
and use

  class MyNewATClass(BaseClass1, BaseClass2, ...):

    schema = schema1 + schema2 + ... + Schema(...)

The "schema_i" can be schemas from base classes or from somewhere
else.

-- 
Dieter
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