Hi Hermann,

Am 21.09.2007 um 14:03 schrieb Hermann Himmelbauer:

Hi,
Does someone know how to create interfaces with circular references?

E.g.:

class IHusband(Interface):
   wife = Object(schema=IWife)

class IWife(Interface):
   husband = Object(schema=IHusband)

What's the suggested solution to this problem?

Perhaps I should modify the classes after they are declared, e.g.:

class IHusband(Interface):
   pass

class IWife(Interface):
   pass

IHusband.wife = Object(schema = IWife)
IWife.husband = Object(schema = IHusband)

Or is there a better solution?


I don't think dot notation works for schema fields, you should use mapping notation. Otherwise I had a similar problem some time ago and coded it similarly, although slightly simpler:

class IHusband(Interface):
   wife = Object(schema= Interface)

class IWife(Interface):
   husband = Object(schema= IHusband)

IHusband['wife '].schema = IWife

Regards,

Markus Kemmerling
___________________
Medical University Vienna
Core Unit for Medical Education
P.O. Box 10  A-1097 Vienna
phone: +43-1-40 160-36 863  fax: +43-1-40 160-93 65 00
http://www.meduniwien.ac.at/bemaw/


Best Regards,
Herman

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