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https://issues.apache.org/jira/browse/JENA-1938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17163314#comment-17163314
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Dave Reynolds commented on JENA-1938:
-------------------------------------
As noted earlier the OWL axioms are:
* {{owl:Class rdf:type rdfs:Class .}}
* {{owl:Class rdfs:subClassOf rdfs:Class .}}
So there are things that are rdfs:Class that are not owl:Class and the current
behaviour is correct a not a bug.
If you want to mix use of RDFS and OWL and use the RDFS profile and work with a
reasoner configuration that is able to infer that all owl:Classes are
rdfs:Classes (i.e. the second axiom above).
> OntClass query does not return classes that are of type RDFS.Class
> ------------------------------------------------------------------
>
> Key: JENA-1938
> URL: https://issues.apache.org/jira/browse/JENA-1938
> Project: Apache Jena
> Issue Type: Bug
> Components: Ontology API
> Affects Versions: Jena 3.16.0
> Reporter: Amir Hooshmand
> Priority: Major
> Labels: easyfix, ready-to-commit
>
> Team,
> There is a bug in the Ontology API; the OntClass query does not return
> classes that are RDFS.Class. You receive only OWL.Class and OWL.Restriction
> classes
> There are two functions affected due to this bug (to my best knowledge);
> * ontClass.listNamedClasses();
> * ontClass.listClasses();
> The Bug is in "org.apache.jena.ontology.impl" in
> * OWLProfile Class,
> * method getClassDescriptionTypes()
> * in Line 218
> My suggestion to fix the bug:
> * add <<< RDFS.Class >>> to the ArrayList.
>
> Thanks
> Amir
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