Hi Binh,
I couldn't find your reference to your mapping file. I don't think you are
going to get any inference on D2RQ. If you search on the list you'll find I
tried some aproaches, but all ended up bringing everything they need onto
memory (lot of SQL queries to end with an inferred model in-memory).
One approach would be to map, file the results obtained with the mapping,
use that file with your ontology and create an InfModel in Java (Jena).
If your question was related to Jena, then this is the wrong list :-(.
Regards
Nacho Larrateguy
On Tue, Nov 29, 2011 at 2:39 PM, Tran Thai Binh <thaibinht...@gmail.com>wrote:
> Dear all,
>
> I have a problem with inference value. I create two rdf files. One for
> schema, one for data
> For schema rdf file, I create subclass a2 of a1, and one dataproperty p1.
> a2 have definition "a1 and p1 some float[>2]"
>
> I expect some instant when I query for a2 but Jena returns nothing. I
> attach rdf files and my code below. Could anyone help me to solve problem.
>
> Thank in advance.
> Binh
>
>
>
> *(1) for schema*
>
> <?xml version="1.0"?>
> <!DOCTYPE rdf:RDF [
> <!ENTITY owl "http://www.w3.org/2002/07/owl#"; >
> <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#"; >
> <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#"; >
> <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; >
> <!ENTITY Ontology1322586150669 "
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#";
> >
> ]>
> <rdf:RDF xmlns="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#";
> xml:base="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl";
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";
> xmlns:owl="http://www.w3.org/2002/07/owl#";
> xmlns:xsd="http://www.w3.org/2001/XMLSchema#";
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
> xmlns:Ontology1322586150669="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#";>
> <owl:Ontology rdf:about="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Datatypes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Data properties
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
> <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Classes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
> <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a2-->
> <owl:Class rdf:about="&Ontology1322586150669;a2">
> <rdfs:subClassOf>
> <owl:Class>
> <owl:intersectionOf rdf:parseType="Collection">
> <rdf:Description
> rdf:about="&Ontology1322586150669;a1"/>
> <owl:Restriction>
> <owl:onProperty
> rdf:resource="&Ontology1322586150669;p1"/>
> <owl:someValuesFrom>
> <rdfs:Datatype>
> <owl:onDatatype rdf:resource="&xsd;float"/>
> <owl:withRestrictions
> rdf:parseType="Collection">
> <rdf:Description>
> <xsd:minExclusive
> rdf:datatype="&xsd;integer">2</xsd:minExclusive>
> </rdf:Description>
> </owl:withRestrictions>
> </rdfs:Datatype>
> </owl:someValuesFrom>
> </owl:Restriction>
> </owl:intersectionOf>
> </owl:Class>
> </rdfs:subClassOf>
> </owl:Class>
> </rdf:RDF>
> <!-- Generated by the OWL API (version 3.2.3.22702)
> http://owlapi.sourceforge.net -->
>
> *(2) for data*
> <?xml version="1.0"?>
> <!DOCTYPE rdf:RDF [
> <!ENTITY owl "http://www.w3.org/2002/07/owl#"; >
> <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#"; >
> <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#"; >
> <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; >
> <!ENTITY Ontology1322586150669 "
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#";
> >
> ]>
> <rdf:RDF xmlns="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl#";
> xml:base="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl";
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";
> xmlns:owl="http://www.w3.org/2002/07/owl#";
> xmlns:xsd="http://www.w3.org/2001/XMLSchema#";
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
> xmlns:Ontology1322586150669="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#";>
> <owl:Ontology rdf:about="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Datatypes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Data properties
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
> <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Classes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
> <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Individuals
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#c-->
>
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;c">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">5</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;q">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">1</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#rf-->
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;rf">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">16</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> </rdf:RDF>
> <!-- Generated by the OWL API (version 3.2.3.22702)
> http://owlapi.sourceforge.net -->
>
>
> *This is my code in Jena*
>
> package query;
> import com.hp.hpl.jena.query.*;
> import com.hp.hpl.jena.rdf.model.*;
> import com.hp.hpl.jena.reasoner.*;
> import com.hp.hpl.jena.util.FileManager;
>
> public class query {
>
> public static void main(String[] args) {
>
> Model schema = FileManager.get().loadModel("O1.owl");
> Model data = FileManager.get().loadModel("O2.owl");
>
> Reasoner reasoner = ReasonerRegistry.getOWLReasoner();
> reasoner = reasoner.bindSchema(schema);
> InfModel infmodel = ModelFactory.createInfModel(reasoner, data);
>
> String queryString =
> "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
> "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
> "PREFIX test: <
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#
> >"+
> "select ?data " +
> "where {?data a test:a2}";
>
> Query query = QueryFactory.create(queryString);
>
> System.out.println("----------------------");
> System.out.println("Query Result Sheet");
> System.out.println("----------------------");
> System.out.println("Direct&Indirect Descendants (inf)");
> System.out.println("-------------------");
>
> // Execute the query and obtain results
> QueryExecution qe = QueryExecutionFactory.create(query,
> infmodel);
> ResultSet results = qe.execSelect();
>
> // Output query results
> ResultSetFormatter.out(System.out, results, query);
>
> qe.close();
> System.out.println("----------------------");
>
>
> }
> }
>
>
>
> --
> Trần Thái Bình
> GIS and Remote Sensing
> thaibinht...@gmail.com
> ttb...@vast-hcm.ac.vn
> Phone: (848) 38247360
> mobile:
> - Việt Nam -
>
>
> ------------------------------------------------------------------------------
> All the data continuously generated in your IT infrastructure
> contains a definitive record of customers, application performance,
> security threats, fraudulent activity, and more. Splunk takes this
> data and makes sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-novd2d
> _______________________________________________
> d2rq-map-devel mailing list
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>
>
--
Luis Larrateguy
Blog: http://nacho.larrateguy.com.ar/
Web: http://larrateguy.com.ar/luisignacio
------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure
contains a definitive record of customers, application performance,
security threats, fraudulent activity, and more. Splunk takes this
data and makes sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-novd2d
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