Hello Lorenz, where should I upload my file? On Wed, Jan 18, 2017 at 6:26 PM, Lorenz Buehmann < [email protected]> wrote:
> > > On 18.01.2017 14:43, Sidra shah wrote: > > Similarly, how can I make BestCategory as data property? When I take it > as > > object property, it does not behave likely I really want. > Whatever this means. > (I'm not sure if you really understand the difference between object and > data property.) > > When I take BestCategory as data property and execute the rule, it saves > my > > BestCategory as Annotation property. I have made the Domain of > BestCategory > > property as Category and range as String. > No no no, now we're at the same point and level we had in the discussion > with neha gupta. > Either your provide the whole ontology and the code, or we have to stop > here. > > > > I do not know when taken as object property, it is saved as > objectproperty > > assertions and when taken as data property, it is saved as Annotations. > > I wish I could share the screen shot of my ontology so that you get more > > clear picture of my problem. > Screenshots of Protege do not help us, since the "real" data including > URIs and naming would be missing. > Upload the WHOLE ONTOLOGY + the WHOLE RUNNING CODE somewhere. > > > > Best regards > > > > On Wed, Jan 18, 2017 at 4:14 PM, Sidra shah <[email protected]> > wrote: > > > >> Hello Lorenz, its not giving me the exception now but it does not > display > >> the message JOption,. It does not read the * if (s1=="CatPhysics")* > >> > >> > >> RDFNode phFav=indiv.getPropertyValue(favcat); > >> if (phFav!=null){ > >> RDFNode l1=phFav.asResource(); > >> > >> > >> String s1=l1.toString(); > >> } > >> > >> if (s1=="CatPhysics"){ > >> JOptionPane.showMessageDialog(null, "Phyics category"); > >> } > >> > >> > >> > >> On Wed, Jan 18, 2017 at 2:12 PM, Sidra shah <[email protected]> > >> wrote: > >> > >>> Thank you Lorenz, let me read the document you mention here. I will > come > >>> back after reading and applying. > >>> > >>> Best regards > >>> > >>> On Wed, Jan 18, 2017 at 1:46 PM, Lorenz B. > <[email protected] > >>> ig.de> wrote: > >>> > >>>> What is for you the "value of a resource"? The URI? > >>>> > >>>> There is only one good source for developers, and that's Javadoc [1] - > >>>> that's why we always refer to if people have questions. > >>>> > >>>> asResource() converts the RDFNode object to a resource > >>>> > >>>> [1] > >>>> https://jena.apache.org/documentation/javadoc/jena/org/apach > >>>> e/jena/rdf/model/RDFNode.html > >>>> > >>>>> Hello Lorenz, this was the question I was expected to ask? I mean > >>>> values of > >>>>> BestCategory are resources. > >>>>> Kindly if you can guide me how to get the value, I searched it on the > >>>> web > >>>>> but could not found any related resources. > >>>>> > >>>>> Kind regards > >>>>> > >>>>> On Wed, Jan 18, 2017 at 10:57 AM, Lorenz B. < > >>>>> [email protected]> wrote: > >>>>> > >>>>>>> OntModel model2=ModelFactory.createOntologyModel( > >>>>>> OntModelSpec.OWL_DL_MEM); > >>>>>>> InputStream in =FileManager.get().open("F://20-8.owl"); > >>>>>>> if (in==null) { > >>>>>>> throw new IllegalArgumentException( "File: " + " > not > >>>>>>> found"); > >>>>>>> } model2.read(in,""); > >>>>>>> > >>>>>>> String ns=" > >>>>>>> http://www.semanticweb.org/t/ontologies/2016/7/myOWL#";; > >>>>>>> > >>>>>>> OntProperty favcat=model2.getOntProperty(ns+ > "BestCategory"); > >>>>>>> String name=jTextField1.getText(); > >>>>>>> Individual indiv = user1.createIndividual(ns + name); > >>>>>>> RDFNode phFav=indiv.getPropertyValue(favcat); > >>>>>>> if (phFav!=null){ > >>>>>>> Literal l1=phFav.asLiteral(); > >>>>>> If BestCategory is an object property, why do you cast the value as > >>>>>> literal?! > >>>>>>> s1=l1.toString(); } > >>>>>>> } > >>>>>>> if (s1=="CatPhysics"){ > >>>>>>> JOptionPane.showMessageDialog(null, "Physics"); > >>>>>>> } > >>>>>>> > >>>>>>> The rule itself is > >>>>>>> > >>>>>>> String rule ="[rule1: ( ?x http://www.semanticweb.org/ > >>>>>>> t/ontologies/2016/7/myOWL#Physics_Preferred_Category ?cat1 )" + > >>>>>>> "( ?x http://www.semanticweb.org/t/ontologies/2016/7/myOWL# > >>>>>>> Chem_Preferred_Category ?cat2 )" + > >>>>>>> "( ?x http://www.semanticweb.org/t/o > >>>> ntologies/2016/7/myOWL#Geo_ > >>>>>>> Preferred_Category ?cat3 )" + > >>>>>>> "greaterThan(?cat1,?cat2), greaterThan(?cat1,?cat3)" > >>>>>>> + " -> (?x http://www.semanticweb.org/t/ > >>>>>>> ontologies/2016/7/myOWL#BestCategory > http://www.semanticweb.org/t/ > >>>>>>> ontologies/2016/7/myOWL#BestCategory#Physics )]"; > >>>>>>> > >>>>>>> > >>>>>>> The BestCategory is object property. > >>>>>>> > >>>>>>> Regards > >>>>>>> > >>>>>>> > >>>>>>> On Tue, Jan 17, 2017 at 8:16 PM, Andy Seaborne <[email protected]> > >>>> wrote: > >>>>>>>> A Complete, Minimal Example please. > >>>>>>>> > >>>>>>>> > >>>>>>>> Partial code, no data is not complete. > >>>>>>>> It must compile and run to be complete. > >>>>>>>> > >>>>>>>> Minimal means only what is necessary to ask the question not the > >>>> whole > >>>>>>>> data or whole application. > >>>>>>>> > >>>>>>>> Andy > >>>>>>>> > >>>>>>>> On 17/01/17 17:14, Sidra shah wrote: > >>>>>>>> > >>>>>>>>> I am surprise that when there is no value in BestCategory, it > >>>> gives me > >>>>>> no > >>>>>>>>> error and when the rule executes and value comes in BestCategory, > >>>> it > >>>>>> gives > >>>>>>>>> me now *"RequiredLiteralException*" > >>>>>>>>> > >>>>>>>>> The code I used here is > >>>>>>>>> > >>>>>>>>> OntProperty favcat=model2.getOntProperty(ns+ "BestCategory"); > >>>>>>>>> > >>>>>>>>> RDFNode phFav=indiv.getPropertyValue(favcat); > >>>>>>>>> if (phFav!=null){ > >>>>>>>>> Literal l1=phFav.asLiteral(); > >>>>>>>>> > >>>>>>>>> s1=l1.toString();} > >>>>>>>>> > >>>>>>>>> if (s1=="CatPhysics"){ > >>>>>>>>> JOptionPane.showMessageDialog(null, "Physics"); > >>>>>>>>> } > >>>>>>>>> > >>>>>>>>> Best regards > >>>>>>>>> > >>>>>>>>> On Tue, Jan 17, 2017 at 5:53 PM, Sidra shah < > >>>> [email protected]> > >>>>>>>>> wrote: > >>>>>>>>> > >>>>>>>>> Hello Chris, thanks a lot for your suggestion. > >>>>>>>>>> Best regards. > >>>>>>>>>> > >>>>>>>>>> On Tue, Jan 17, 2017 at 5:37 PM, Chris Dollin < > >>>>>>>>>> [email protected]> wrote: > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>>> On 17/01/17 13:30, Sidra shah wrote: > >>>>>>>>>>> > >>>>>>>>>>> Hi Lorenz, I am sorry but with much regards, you discussed here > >>>> the > >>>>>>>>>>>> problem, not the solution :) :) > >>>>>>>>>>>> > >>>>>>>>>>>> I know this if there is no value, there must be Null > exception, > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>> This is not true. > >>>>>>>>>>> > >>>>>>>>>>> but can you suggest me a way where we dodge the compiler > >>>>>>>>>>> > >>>>>>>>>>> No "dodging" of the compiler is required. Instead, just write > >>>>>>>>>>> perfectly ordinary code that tests to see if the result of > >>>>>>>>>>> getPropertyValue is null, and take one action if it isn't and > >>>>>>>>>>> a different one if it is. > >>>>>>>>>>> > >>>>>>>>>>> There's nothing special about this. You don't need to use > >>>>>>>>>>> break (which is for escaping from loops); just an if > >>>>>>>>>>> with suitable then and else parts. > >>>>>>>>>>> > >>>>>>>>>>> I know this is more a Java problem, but any help I will > >>>> appreciate. > >>>>>>>>>>> Find someone /local/ doing the same or similar course and talk > to > >>>>>>>>>>> them (and have them talk to you) about programming and this > >>>>>>>>>>> problem. I don't mean copy each other's work; I mean use each > >>>>>>>>>>> other to understand what the problem is about and how the code > >>>>>>>>>>> works. Each of you will know things that the other doesn't; > >>>> share. > >>>>>>>>>>> Chris > >>>>>>>>>>> > >>>>>>>>>>> -- > >>>>>>>>>>> "He could not weigh up which was worse and so tried not to > think > >>>>>> about > >>>>>>>>>>> either." > >>>>>>>>>>> /The > >>>> Spellgrinder's > >>>>>>>>>>> Apprentice/ > >>>>>>>>>>> > >>>>>>>>>>> Epimorphics Ltd, http://www.epimorphics.com > >>>>>>>>>>> Registered address: Court Lodge, 105 High Street, Portishead, > >>>> Bristol > >>>>>>>>>>> BS20 6PT > >>>>>>>>>>> Epimorphics Ltd. is a limited company registered in England > >>>> (number > >>>>>>>>>>> 7016688) > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>> -- > >>>>>> 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 > >>>> > >>>> > >
