Inferred RDF triples (resp. OWL axioms) are inherent in an ontology by the rules (resp. OWL axioms) from which they can be entailed.
> Hi Lorenz, so it means these three classes can not be replaced using > setOntClass? > > On Fri, Jan 27, 2017 at 9:00 PM, Lorenz Buehmann < > [email protected]> wrote: > >> setOntClass does not replace classes that follow from rules byinference >> - this should be clear.I mean, how should this work? As long as the >> rules are used for inference and the data matches the body of the rules, >> the head will be added. >> >> >> On 27.01.2017 15:28, tina sani wrote: >>> My individual employee is a type of Technical, Manager and Programmer. I >>> want to replace all these classes with only one class Worker. I used the >>> following code, it supposed to replace it but it does not. >>> All these classes are defined in the code. >>> >>> if ((employee.hasOntClass(technical)) && >>> (employee.hasOntClass(programmer)) && (employee.hasOntClass(manager))) >>> { >>> employee.setOntClass(worker); >>> JOptionPane.showMessageDialog(null, "here are the three classes"); >>> } >>> >>> Though it display the message in the Dialog. >>> >>> On Fri, Jan 27, 2017 at 12:57 PM, Lorenz B. < >>> [email protected]> wrote: >>> >>>> Why should a method called "listOntClasses" just return a single class? >>>> The usage of the plural form should be clear enough. And Javadoc Javadoc >>>> Javadoc,... >>>>> Dave, I have read some where that Individual#listOntClasses will only >>>> list >>>>> one class at one time. >>>>> >>>>> And yes employee is individual and programmer, manager and worker are >>>> class >>>>> variables. >>>>> >>>>> On Fri, Jan 27, 2017 at 12:23 AM, Dave Reynolds < >>>> [email protected]> >>>>> wrote: >>>>> >>>>>> On 26/01/2017 21:08, tina sani wrote: >>>>>> >>>>>>> Hi Dave, Will this work? >>>>>>> >>>>>>> if ((employee1.hasOntClass(programmer)) && >>>>>>> ((employee1.hasOntClass(manager)) &&((employee1.hasOntClass(worker)) >>>>>>> { >>>>>>> >>>>>>> } >>>>>>> >>>>>> Try it and see! >>>>>> >>>>>> There's not enough there for us to tell for sure. If the variable >>>>>> employee1 is an Individual and if variables programmer, manager and >>>> worker >>>>>> are all Resources correctly corresponding to your classes then that >> will >>>>>> test if that Individual has all three of those classes in the model >>>>>> (whether asserted or inferred by rules). >>>>>> >>>>>> To add to my earlier answer, if you have an Individual rather than >> just >>>>>> and OntResource then Individual#listOntClasses will enable you to >>>> enumerate >>>>>> the classes conveniently. >>>>>> >>>>>> Dave >>>>>> >>>>>> >>>>>> On Thu, Jan 26, 2017 at 11:32 PM, Dave Reynolds < >>>> [email protected] >>>>>>> wrote: >>>>>>> >>>>>>> On 26/01/2017 15:20, tina sani wrote: >>>>>>>> How can I get all the classes of which an individual is a type? >> After >>>>>>>>> Jena >>>>>>>>> rules executed, my individual has multiple class like: >>>>>>>>> Employee001 is of type: Worker, Programmer, Manager. >>>>>>>>> >>>>>>>>> So can I get all these three classes in Jena ? I have read >> somewhere >>>>>>>>> that >>>>>>>>> getOntClass() only return one class at a time and that is on random >>>>>>>>> basis. >>>>>>>>> >>>>>>>>> See OntResource#listRDFTypes or, if you just have a Resource then >>>>>>>>> >>>>>>>> Resource#listProperties(RDF.type) or, as Charles says, use SPARQL. >>>>>>>> >>>>>>>> Dave >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> --- >>>>>>>> This email has been checked for viruses by Avast antivirus software. >>>>>>>> https://www.avast.com/antivirus >>>>>>>> >>>>>>>> >>>>>>>> >>>>>> --- >>>>>> This email has been checked for viruses by Avast antivirus software. >>>>>> https://www.avast.com/antivirus >>>>>> >>>>>> >>>> -- >>>> Lorenz Bühmann >>>> AKSW group, University of Leipzig >>>> Group: http://aksw.org - semantic web research center >>>> >>>> >> -- Lorenz Bühmann AKSW group, University of Leipzig Group: http://aksw.org - semantic web research center
