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[protege-owl] Retrieving Necessary and Sufficient Conditions from Class

Timothy Redmond tredmond at
Fri Nov 19 08:36:50 PST 2010

On 11/19/2010 07:45 AM, Rodolfo Rieckhof wrote:
> Hello,
> i want to get all Necessary and Sufficient Conditions from an 
> arbitrary Class. How is this done with the Protege OWL API 3.4.4. 
> Right now i am using Jena 

In a choice between the OWL API 3.4.4 and Jena, I would tend to favor 
Jena.  The main advantage of the Protege OWL 3.4.4 api is that it will 
give you easy access to other Protege capabilities - e.g. you want to 
write a Protege 3 plugin or you want to use some Protege 3 widget or 

I was just looking at the javadoc and the Jena OntClass has a 
listEquivalentClasses method.

> but i though in the protege API should this be already implemented. 

In the Protege 3 OWL api, RDFSClass and hence OWLNamedClass has a 
getEquivalentClasses method.


> My first try was with
> OWLModel owlModel = ProtegeOWL.createJenaOWLModelFromURI(theURI);
> owlModel.getClses()
> but getClses is depracated which one is the new method ? A small code 
> example, the name of the class or a link to the documentation site 
> will be appreciated.
> Regards,
> Rodolfo
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