You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@jena.apache.org by "Lorenz Bühmann (Jira)" <ji...@apache.org> on 2020/07/22 07:05:00 UTC
[jira] [Commented] (JENA-1938) OntClass query does not return
classes that are of type RDFS.Class
[ https://issues.apache.org/jira/browse/JENA-1938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17162540#comment-17162540 ]
Lorenz Bühmann commented on JENA-1938:
--------------------------------------
why do you think this is a bug?
RDFS has a more general notion of class than OWL has. In particular, rdfs:Class is not an OWL class it only holds
{noformat}
owl:Class rdfs:subClassOf rdfs:Class
{noformat}
> 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
> Environment: 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
> 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
--
This message was sent by Atlassian Jira
(v8.3.4#803005)