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[protege-discussion] Attaching data to classes and querying it

Terence Fitzgerald terence.fitzgerald at
Wed Apr 2 12:57:39 PDT 2008

Thanks, Samson, for your quick reply.  I clearly hadn't gotten to
metaclasses yet, but I'll be using them now!



You need to create your own metaclasses so that you can attach 
class-specific information and query for them. See [1] and subsequent 
pages on creating metaclasses and instances of metaclasses. The basic 
idea is that a class is an instance of some metaclass, just as normal 
instances are instances of classes. So you can treat classes as 
instances if they are instances of appropriate metaclasses.


Samson Tu                                   email: swt at
Senior Research Scientist                   web:
Center for Biomedical Informatics Research  phone: 1-650-725-3391
Stanford University                         fax: 1-650-725-7944

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