Hello,
thanks for your answer Scott, but is there any way to use SPIN without the
TBD, and add the constraints with the api dynamically ?
2010/10/7 Scott Henninger <shennin...@topquadrant.com>
> Rodolfo; There may be a couple of SPIN principles that may be helpful to
> you. The first is that constraints, constructors and rules are defined for
> a class and applied to its members. The second is that ?this should be used
> to state that the query is applied to individual members. I.e. in the
> following query:
> 1) is defined as a spin:constraint property for bad:Device
> 2) the triple pattern <?dev rdf:type bad:Device> is not necessary because
> ?this is pre-bound to each member of bad:Device
>
> CONSTRUCT {
> _:b0 a spin:ConstraintViolation .
> _:b0 spin:violationRoot ?this .
> _:b0 spin:violationPath bad:deviceIngressProtection .
> _:b0 rdfs:label "the value should be between 20 and 30" .
> }
> WHERE {
> ?this bad:deviceIngressProtection ?value .
> FILTER ((?value < 20) || (?value > 30)) .
> }
>
> In this case, I'm using Composer's constraint violation infrastructure to
> show this, so I'm creating a ConstraintViolation instance and hanging it on
> the bad:deviceIngressProtection property.
>
> I'm attaching a model that demonstrates this. You can try it out in TBC
> Free/SE/ME.
>
> -- Scott
>
>
> On 10/7/10 1:29 AM, dennis wrote:
>
> Hi Rodolfo,
>
> could it be that ?value refers to a plain literal? I've realized that
> arithmetic operations don't work if the literals are not explicitly
> typed e.g. as xsd:integer or xsd:double, and maybe this holds for <
> and > comparisons as well...
>
> Cheers,
> Dennis
>
> On 7 Okt., 03:37, Holger Knublauch <hol...@topquadrant.com>
> <hol...@topquadrant.com> wrote:
>
> Hi Rudolfo,
>
> I am not sure where the problem is in your example. I think I need more
> information - feel free to send me your specific example (off-list). I notice
> that you are creating the CONSTRUCT query but it is unclear whether this
> constraint is also attached to the model somehow.
>
> Holger
>
> On Oct 7, 2010, at 5:00 AM, Rodolfo Rieckhof wrote:
>
>
> 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 <hol...@topquadrant.com>
> <hol...@topquadrant.com>:
>
> 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, rodo2...@googlemail.com 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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