Hi, Thanks for the reply.
Yes, I understood that. But what is strange is that the class that gives an error (of the first error) is defined in my file as <owl:Class rdf:about="http://bla.bla/B";> So it should be defined in the basic model as a class. Right ? On 25 January 2013 21:40, Tayfun Gökmen Halaç <[email protected]>wrote: > 2013/1/25 Dave Reynolds <[email protected]> > > > On 25/01/13 14:25, Tayfun Gökmen Halaç wrote: > > > >> Hi, > >> > >> Nothing changes if the model creation is done by > >> ModelFactory.**createOntologyModel(**OntModelSpec.OWL_MEM_TRANS_**INF) > >> in my > >> example code. > >> > >> What does "as(OntClass.class) part doesn't work" mean? If you get an > >> exception like com.hp.hpl.jena.ontology.**ConversionException, your > class > >> resources do not have a type assertion. > >> > > > > It means there's no type assertion on that class :) > > > > > > By default OntModels work in strict mode, so to know that something can > be > > treated as a class it is looking for a statement that it is of type > > owl:Class. If you have inference this may be inferred for you but in any > > case it is best practice to explicitly declare classes. > > > > Here's the example. > > OntModel model = ModelFactory > .createOntologyModel(OntModelSpec.OWL_MEM_TRANS_INF); > OntClass classA = model.createClass("http://bla.bla/A";); > Resource classB = model.createResource("http://bla.bla/B";); > > classA.addDisjointWith(classB); > > ExtendedIterator<OntClass> classes = model.listClasses(); > while (classes.hasNext()) { > OntClass ontClass = (OntClass) classes.next(); > System.out.println(ontClass); > } > > If you create model with > OntModelSpec.OWL_MEM_MICRO_RULE_INF, > OntModelSpec.OWL_MEM_MINI_RULE_INF, OntModelSpec.OWL_MEM_RULE_INF, > OntModel infers the class assertion for the class B. But, it is not done > by OntModelSpec.OWL_MEM, OntModelSpec.OWL_MEM_RDFS_INF, > OntModelSpec.OWL_MEM_TRANS_INF. > > > > > > You can use ontmodel.setStrictMode(false) to disable this checking. > > > > Dave > > > > > >> Best, > >> Tayfun > >> > >> > >> 2013/1/25 Dave Reynolds <[email protected]> > >> > >> You don't need to load your ontology twice. An OntModel is just a > wrapper > >>> round an underlying model so you can construct both a with-inference > and > >>> a > >>> without-inference OntModel over the same Model. > >>> > >>> Dave > >>> > >>> > >>> On 25/01/13 03:35, Emanuel Santos wrote: > >>> > >>> Hi Tayfun, > >>>> > >>>> Thank you so much! > >>>> > >>>> That way only works if I choose a model without any class-hierarchy > >>>> inference. Of course. > >>>> > >>>> When I'm working with a model with class-hierarchy inference (e.g. > >>>> OWL_MEM_TRANS_INF > >>>> ou a reasoner) can I still get the direct Disjointwith classes ?? I > >>>> tried > >>>> it getting them using the baseModel but the "as(OntClass.class)" part > >>>> doesn't work. If there isn't any other way...I'm doomed to load 2x my > >>>> ontology... it is not good :) Any ideas ? > >>>> > >>>> Thanks! > >>>> > >>>> best, > >>>> > >>>> Emanuel > >>>> > >>>> > >>>> > >>>> > >>>> On 24 January 2013 22:32, Tayfun Gökmen Halaç > >>>> <[email protected]>****wrote: > >>>> > >>>> Hi Emanuel, > >>>> > >>>>> > >>>>> Not with a direct method. You can obtain those sets with a modified > >>>>> version > >>>>> of previous solution. > >>>>> > >>>>> // create the ontology... > >>>>> OntModel model = ModelFactory.****createOntologyModel(); > >>>>> OntClass classA = model.createClass("http://bla.****bla/A< > >>>>> http://bla.bla/A> > >>>>> "); > >>>>> OntClass classB = model.createClass("http://bla.****bla/B< > >>>>> http://bla.bla/B> > >>>>> "); > >>>>> OntClass classC = model.createClass("http://bla.****bla/C< > >>>>> http://bla.bla/C> > >>>>> "); > >>>>> OntClass classD = model.createClass("http://bla.****bla/D< > >>>>> http://bla.bla/D> > >>>>> "); > >>>>> > >>>>> classA.addDisjointWith(classB)****; > >>>>> classA.addDisjointWith(classC)****; > >>>>> > >>>>> classC.addDisjointWith(classD)****; > >>>>> > >>>>> > >>>>> // list disjoint sets... > >>>>> ResIterator classesHasDisjoint = model > >>>>> .listResourcesWithProperty(****OWL.disjointWith); > >>>>> while (classesHasDisjoint.hasNext()) { > >>>>> OntClass cls = classesHasDisjoint.next().as(****OntClass.class); > >>>>> List<OntClass> disjointList = cls.listDisjointWith().toList(****); > >>>>> disjointList.add(0, cls); > >>>>> System.out.println(****disjointList); > >>>>> > >>>>> } > >>>>> > >>>>> Console output: > >>>>> [http://bla.bla/A, http://bla.bla/C, http://bla.bla/B] > >>>>> [http://bla.bla/C, http://bla.bla/D] > >>>>> > >>>>> Best, > >>>>> Tayfun > >>>>> > >>>>> > >>>>> 2013/1/24 Emanuel Santos <[email protected]> > >>>>> > >>>>> Hi, > >>>>> > >>>>>> > >>>>>> Thanks for the reply! > >>>>>> > >>>>>> Maybe I was not clear. > >>>>>> > >>>>>> For instance, given these classes: > >>>>>> > >>>>>> <owl:Class rdf:about="http://bla#A!> > >>>>>> <owl:disjointWith rdf:resource="http:/bla#B"/> > >>>>>> <owl:disjointWith rdf:resource="http:/bla#C"/> > >>>>>> </owl:Class> > >>>>>> > >>>>>> <owl:Class rdf:about="http://bla#C";> > >>>>>> <owl:disjointWith rdf:resource="http:/bla#D"/> > >>>>>> </owl:Class> > >>>>>> > >>>>>> I want to obtain these sets : {A,B,C} and {C,D}. > >>>>>> Only the direct classes. > >>>>>> > >>>>>> Thanks! > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> On 24 January 2013 14:03, Fabio Aiub Sperotto <[email protected] > > > >>>>>> wrote: > >>>>>> > >>>>>> Hi Emanuel, > >>>>>> > >>>>>>> > >>>>>>> I don't know if I have a good solution for you (I'm not the best > >>>>>>> programmer), but recently I made this: Search for all classes of > >>>>>>> > >>>>>>> ontology. > >>>>>> > >>>>>> For each class X, return the set of classes that is disjoint with > X: > >>>>>>> > >>>>>>> model.read(new InputStreamReader(in), ""); //read the > >>>>>>> ontology > >>>>>>> > >>>>>>> Iterator classes = model.listClasses(); //list all > classes > >>>>>>> in > >>>>>>> ontology > >>>>>>> while (classes.hasNext()){ > >>>>>>> OntClass ontologyClass = (OntClass) classes.next(); > >>>>>>> //get > >>>>>>> > >>>>>>> one > >>>>>> > >>>>> > >>>>> class > >>>>>> > >>>>>>> > >>>>>>> //get list of disjoint classes from ontologyClass > >>>>>>> Iterator disjointClasses = > >>>>>>> > >>>>>>> ontologyClass.****listDisjointWith(); > >>>>>> > >>>>> > >>>>> > >>>>>> while(disjointClasses.hasNext(****)){ > >>>>>>> System.out.print("Class > "+ontologyClass.getLocalName() > >>>>>>> ****+" > >>>>>>> is > >>>>>>> disjoint with: "); > >>>>>>> System.out.println(****disjointClasses.next()); > >>>>>>> > >>>>>>> } > >>>>>>> System.out.println(""); > >>>>>>> > >>>>>>> } > >>>>>>> > >>>>>>> This will help? My some mistake? > >>>>>>> > >>>>>>> > >>>>>>> 2013/1/24 Emanuel Santos <[email protected]> > >>>>>>> > >>>>>>> Hi, > >>>>>>> > >>>>>>>> > >>>>>>>> I just started using Jena. > >>>>>>>> Any easyway to get all set of classes "disjointWith" ? > >>>>>>>> > >>>>>>>> Thanks > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>> > >>>>>>> -- > >>>>>>> Fabio Aiub Sperotto > >>>>>>> Mestrando em Modelagem Computacional > >>>>>>> about.me/fabiosperotto > >>>>>>> www.twitter.com/fabio_gk > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>> > >>>>> > >>>> > >>> > >> > > >
