in owlcs/owlapi, it is also possible to reference to the document IRI itself: `<a> owl:import <file://docuemnt.owl>`. it is allowed by specification.
but in jena-ontapi the import closure can only contain the version IRI or the ontology IRI, not document IRI. On 2024/08/08 14:06:29 Phillip Ross wrote: > For reference, the owlcs owlapi models an ontology identifier as a > composite of ontology IRI and version IRI, the latter of which may be > null. And the document IRI is either the version IRI if it has been > specified, or the ontology IRI if there is no version IRI. > > On Thu, Aug 8, 2024 at 3:08 AM Sergei Zuev <ssz...@apache.org> wrote: > > > > In the new API, the ontology identifier is either the version IRI or the > > ontology IRI. The document IRI is not an identifier. > > Perhaps this is a flaw - document support was added at the last moment, and > > for managing imports closure no document-manager is needed. > > > > Typical work with documents can be like this: > > ``` > > DocumentGraphRepository repository = > > GraphRepository.createGraphDocumentRepositoryMem(); > > repository.addMapping( > > "http://www.co-ode.org/ontologies/pizza/pizza.owl";, > > documentPath); > > OntModel m = OntModelFactory.getModelOrNull( > > "http://www.co-ode.org/ontologies/pizza/pizza.owl";, > > OntSpecification.OWL2_DL_MEM_BUILTIN_RDFS_INF, > > repository); > > m.write(System.out, "ttl"); > > ``` > > > > Here, `http://www.co-ode.org/ontologies/pizza/pizza.owl` is an ontology > > IRI. `DocumentGraphRepository` manages mappings between documents and > > ontologies. > > > > If you think that some functionality is missing, please open a github issue. > > > > By the way, the external library owlcs/ontapi, which works on top of > > apache-ontapi, has its own full-fledged ontology manager, which works > > according to the specification, i.e. the ontology identifier can also be a > > document IRI. > > > > On 2024/08/07 11:15:58 Steve Vestal wrote: > > > I have some questions about doing an OWL import closure. My > > > understanding is that an Import for an owl:Ontology can use any of a > > > URL, an ontology IRI, or a version IRI to access an OWL document. > > > Different documents that have the same ontology IRI may be accessed > > > using different URLs, either identical copies or with different version > > > IRIs. > > > > > > The link given on the page > > > https://jena.apache.org/documentation/ontology/#graphrepository > > > (https://jena.apache.org/documentation/javadoc/jena/org.apache.jena.ontapi/org/apache/jena/ontapi/GraphRepository.html) > > > gets a "URL was not found" error. A search didn't turn it up. What > > > package contains this class? > > > > > > That page says "By default, when an ontology model reads an ontology > > > document, it will/not/locate and load the document’s imports." A search > > > of this page did not find OntDocumentManager, which I have been using. > > > FileManager seems to be deprecated in favor of RDFDataMgr. Will > > > OntDocumentManager be deprecated or modified? > > > > > > What is the recommended way to accumulate a set of URLs, ontology IRIs, > > > and version IRIs, and use that set to do an import closure? > > > >
