Hello Holger,
thanks for your quick response. I have downloaded the new API and it works
just fine. But i have another question.
How can i insert a SPIN constraint dynamically in my ontology ? I have
tried the following:
I create a constraint, just like in the examples with:
...
String query = prefixes +
"CONSTRUCT { _:b0 bad:deviceIngressProtection ?value;" +
" rdfs:label 'the value should be between 20 an 30'} " +
"WHERE { ?dev rdf:type bad:Device ; bad:deviceIngressProtection ?value ." +
" FILTER ( ?value < 20 || ?value > 30) " +
"}";
Query arqQuery = ARQFactory.get().createQuery(model, query);
ARQ2SPIN arq2SPIN = new ARQ2SPIN(model);
Construct spinQuery = (Construct) arq2SPIN.createQuery(arqQuery, null);
//then i load my Onotology
File root = new File("ontologies");
String dataURL = new File(root.getAbsolutePath() +
"/Thermokon_Easysens_Funkschalter_BJ_V1.owl").toURI().toString();
Reasoner reasoner = PelletReasonerFactory.theInstance().create();
// create an empty model
OntModel ontModel = ModelFactory.createOntologyModel(
PelletReasonerFactory.THE_SPEC );
ontModel.read( dataURL );
//add the model with the Constraint
ontModel.addl(model);
SPINModuleRegistry.get().registerAll(ontModel);
// let SPIN do its work
List<ConstraintViolation> cvs = SPINConstraints.check(ontModel, null);
System.out.println("Constraint violations:" + cvs.size());
for(ConstraintViolation cv : cvs) {
System.out.println(" - at " + SPINLabels.get().getLabel(cv.getRoot()) + ": "
+ cv.getRoot());
}
the Problem is that i don´t get any constrains violation (cvs = 0).
Although when i run the query with ARQ I get 1. Could you tell me please
wich is the wright way to do this ? . Is it a problem, that the is Ontology
in rdf ?
Regards,
Rodolfo
2010/10/6 Holger Knublauch <[email protected]>:
> Hi Rodolfo,
>
> thanks a lot for this bug report. It was indeed a (simple) recursive loop.
Since this was a small but rather critical bug, I have just updated the SPIN
API that is on the web with a fix. The file has still the same version
number etc, but the infinite loop should be gone now. I plan to do a proper
release with a couple of new features in a few weeks after it went through
QA.
>
> Thanks again
> Holger
>
>
> On Oct 6, 2010, at 4:28 AM, [email protected] wrote:
>
>> Hello everyone,
>> I just downloaded the implementation of the SPIN API 1.1.2 and when
>> i run the example KennedysInferencingAndConstraintsExample i get an
>> StackOverflowError. I haven't changed anything in the source and i
>> think the problem is in this piece of code:
>>
>> ...
>> // Run constraints on a single instance only
>> Resource person = cvs.get(0).getRoot();
>> List<ConstraintViolation> localCVS =
SPINConstraints.check(person,
>> null);
>> System.out.println("Constraint violations for " +
>> SPINLabels.get().getLabel(person) + ": " + localCVS.size());
>>
>> i am using jena 2.6.3 and ARQ 2.8.5. I would be very thankful for any
>> help.
>>
>> Regards
>> Rodolfo
>>
>> Console output:
>>
>> Inferred triples: 136
>> Constraint violations:
>> - at spin:AskTemplates:
>> - at spin:UpdateTemplates:
>> - at spin:SelectTemplates:
>> - at spin:ConstructTemplates:
>> - at kennedys:JosephKennedy: age must be within a realistic range
>> - at kennedys:StephenSmith: Same-sex marriage not permitted (in this
>> model)
>> - at kennedys:JeanKennedy: Same-sex marriage not permitted (in this
>> model)
>> Exception in thread "main" java.lang.StackOverflowError
>> at
>> org.topbraid.spin.constraints.SPINConstraints.check(SPINConstraints.java:
>> 259)
>> at
>> org.topbraid.spin.constraints.SPINConstraints.check(SPINConstraints.java:
>> 259)
>> ....
>>
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>
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