Garbage collecting the restrictions sounds interesting. I aught to be able to iterate through all anonymous classes and see if they're 'used' (or referenced).
Thanks for the response. -- Mark Fischer On Tue, Mar 5, 2013 at 5:20 PM, Dave Reynolds <dave.e.reyno...@gmail.com>wrote: > On 05/03/13 22:02, David Jordan wrote: > >> >> If you have your ontology in its own separate Model, doesn't >> model.removeAll() do it? >> > > I understood Mark to be trying to remove individual axioms from within a > Model, not just empty the Model. > > For example, if you have declared a class with some associated > restrictions in OWL then you have not just the class resource but a bunch > of bNodes representing the restrictions. So if you want to delete the class > but leave the rest of the ontology intact then you have to remove not just > all properties of the class resource but you also have to garbage collect > the restrictions (though normally restrictions aren't structured shared so > you could just delete them too). > > Dave > > > > On Mar 5, 2013, at 4:49 PM, Dave Reynolds wrote: >> >> On 05/03/13 20:20, Mark Fischer wrote: >>> >>>> Is there an easy way to cleanly remove resources from an Ontology? >>>> >>>> Currently, I just remove all statements that have the resource present. >>>> This works well enough but I'm worried that it will leave >>>> anonymous superclasses behind. >>>> >>> >>> Yes, it will. >>> >>> I also wonder if there is a more 'ontology' way of removing things like >>>> classes instead of using the underlying rdf graph directly. >>>> >>> >>> No there's no axiom-level remove operation in Jena, you'll to work with >>> the RDF graph I'm afraid. >>> >>> Dave >>> >>> >>> >> >
