[Zope] Deriving ZClasses from Other Product's ZClasses
Dieter Maurer
dieter@handshake.de
Tue, 14 Aug 2001 21:30:27 +0200 (CEST)
Ronald L. Chichester writes:
> Can you derive a ZClass in one product from a base class in another
> (separate) product?
In principle, this is possible.
However, there are rumors (--> searchable mailing list archives)
that the inheritance breaks when the product is exported
and later reimported.
The reporter concluded: effectively unusable.
> Which begs the next question...
>
> Can you search for multiple classes by searching for the base class.
There is no buildin for this.
But it would be possible to define such a search mechanism.
You would use "ZopeFind" on the "Products" folder to locate
all ZClasses and then look whether the sequence of bases
contain the one you are searching for.
Dieter