I found it's indeed a bug of OWL-API that was reported at the end of 2011. http://sourceforge.net/tracker/?func=detail&aid=3440117&group_id=90989&atid=595534
I think the easiest work around for me will be exporting everything to RDF/XML as long as the issue remains. > > > Hello, > > I have a set of ontologies heavily importing each other (generated by TBC). I > used to have them published as RDF/XML, and made them available via the > purl.org service at their URIs. Everything was fine, for example I was able > to load them with an ontology documentation tool > (http://www.essepuntato.it/lode/) and also services such as > http://owl.cs.manchester.ac.uk/converter/ were able to process the files (and > also dereference the imports successfully). > > However, then I stored all files as turtle (with TBC) which is great because > it better supports version control (especially in combination with the sorted > printer). Now the services mentioned above (they seem to use the OWLAPI > turtle parser) do not accept my files anymore. After doing some testing it > turned out that everything works fine as long as I do not use prefixes for > the ontology itself AND for the imports statements (Example below shows this > for using a prefix for the ontology resource only, but the same problem I > have with the imports). Are there any such restrictions on using prefixes I'm > not ware of, or is the OWL-API parser here wrong? > > Any help appreciated. I would not like to change everything back to RDF/XML, > or should I prefer RDF/XML for publishing anyway for some reason I > overlooked? > > Best regards > Jan > > > > WORKS also in TTL: > ###################################### > # Saved by TopBraid on Thu Jan 19 10:16:44 CET 2012 > # baseURI: http://purl.org/viso/test/ > > @prefix owl: <http://www.w3.org/2002/07/owl#> . > @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . > @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . > @prefix test: <http://purl.org/viso/test/> . > @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . > > <http://purl.org/viso/test/> > rdf:type owl:Ontology ; > owl:versionInfo "Created with TopBraid Composer"^^xsd:string . > > test:Thing_1 > rdf:type owl:Class ; > rdfs:subClassOf owl:Thing . > > > DOES NOT WORK in TTL > ###################################### > # Saved by TopBraid on Thu Jan 19 10:16:44 CET 2012 > # baseURI: http://purl.org/viso/test/ > > @prefix owl: <http://www.w3.org/2002/07/owl#> . > @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . > @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . > @prefix test: <http://purl.org/viso/test/> . > @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . > > test: > rdf:type owl:Ontology ; > owl:versionInfo "Created with TopBraid Composer"^^xsd:string . > > test:Thing_1 > rdf:type owl:Class ; > rdfs:subClassOf owl:Thing . > > > > > -- > Dipl. Medien-Inf. Jan Polowinski > Research Assistant > > Technische Universität Dresden > Department of Computer Science > Software- and Multimedia-Technology > 01062 Dresden > > Phone: +49 351 463 38608 > Mobil: +49 176 80158257 > E-Mail: [email protected] > -- Dipl. Medien-Inf. Jan Polowinski Research Assistant Technische Universität Dresden Department of Computer Science Software- and Multimedia-Technology 01062 Dresden Phone: +49 351 463 38608 Mobil: +49 176 80158257 E-Mail: [email protected] -- You received this message because you are subscribed to the Google Group "TopBraid Suite Users", the topics of which include TopBraid Composer, TopBraid Live, TopBraid Ensemble, SPARQLMotion and SPIN. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-users?hl=en
