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[protege-owl] Please explain ont-policy.rdf

Timothy Redmond tredmond at
Tue Apr 3 16:23:39 PDT 2007

I don't know exactly what you are doing so it is hard to tell what 
happened.  First did you set protege.dir and from what directory did you 
start the applications?   For a regular protege startup (you can get 
around this), either the application needs to be started in an 
installation directory for Protege or you need to add a vm option:

    -Dprotege.dir=installation directory for protege.

I did find references to ont-policy.rdf in protege-owl.  It is used by 
the RefactorAcrossFiles action.  Is your application doing some sort of 
owl refactor operation when it gets the error?  Depending on the cause 
of the error you may be able to set  the system property


as follows to specify an alternative location for the ontPolicy file:

-Dedu.stanford.smi.protegex.owl.jena.loader.JenaLoader.ontPolicy=path to 

Jena also uses ont-policy.rdf internally and I don't know much about 
what it is doing with that.


Thang Duong wrote:
> I've been doing a SemanticWeb application, i used 
> ProtegeOWL.createJeanOWLModel(myOntologPath) to create a JenaOWLModel.
> When I ran application, the editor show the error message such as:
> DefaultURIResolver] Warning: Could not resolve 
> file://D:/SemanticWeb/lib/test.owl: 
> com.hp.hpl.jena.shared.WrappedIOException: rethrew: 
> D:\SemanticWeb\plugins\edu.stanford.smi.protegex.owl\ont- policy.rdf 
> (The system cannot find the path specified)
> I've tried to find the string 
> D:\SemanticWeb\plugins\edu.stanford.smi.protegex.owl\ont-policy.rdf to 
> change this string into 
> D:\SemanticWeb\lib\plugins\edu.stanford.smi.protegex.owl\ont- 
> policy.rdf. Because the simple truth is ont-policy.rdf file now is in 
> the path: D:\SemanticWeb\lib\plugins\edu.stanford.smi.protegex.owl\
> So, if you had tried to change the path pointing to ont-policy.rdf, 
> please show me how i can change .
> Thanks for looking over my problem.
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