Examples of org.mindswap.pellet.jena.ModelExtractor

org.mindswap.pellet.jena.ModelExtractor
Extract a Jena model that contains the information Pellet inferred. Models can be generated about classes, properties or individuals. Note that individual models do not contain any information about property assertions, it just contains type assertions about individuals. @author Evren Sirin


  private void extractInferences() {
    if( selector.size() == 0 )
      throw new PelletCmdException( "Selector is empty, provide types to extract" );


    ModelExtractor extractor = new ModelExtractor( getKB() );
    extractor.setSelector( selector );


    Model extracted = ModelFactory.createDefaultModel();
    
    if( SetUtils.intersects( selector, ModelExtractor.StatementType.ALL_CLASS_STATEMENTS ) ) {
      startTask( "Extracting class statements" );
      extractor.extractClassModel( extracted );
      finishTask( "Extracting class statements" );
    }


    if( SetUtils.intersects( selector, ModelExtractor.StatementType.ALL_PROPERTY_STATEMENTS ) ) {
      startTask( "Extracting property statements" );
      extractor.extractPropertyModel( extracted );
      finishTask( "Extracting property statements" );
    }


    if( SetUtils.intersects( selector, ModelExtractor.StatementType.ALL_INDIVIDUAL_STATEMENTS ) ) {
      startTask( "Extracting individual statements" );
      extractor.extractIndividualModel( extracted );
      finishTask( "Extracting individual statements" );
    }


    output( extracted );
  }

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          return true;
        }
        
        @Override
        public ExtendedIterator<Triple> find(KnowledgeBase kb, PelletInfGraph pellet, Node s, Node p, Node o) {
          ModelExtractor me = new ModelExtractor( kb );
          me.setSelector( StatementType.ALL_STATEMENTS );
          Graph graph = me.extractModel().getGraph();
          return graph.find( Triple.ANY );
        }
      }
    );

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    rawModel.add(a, RDF.type, C);
    rawModel.add(C, RDFS.subClassOf, D);
    
    OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC, rawModel );


    ModelExtractor extractor = new ModelExtractor(model);
    Model inferences = extractor.extractModel();
    
    assertTrue(inferences.contains(a, RDF.type, D));
  }

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          return true;
        }
        
        @Override
        public ExtendedIterator<Triple> find(KnowledgeBase kb, GraphLoader loader, Node s, Node p, Node o) {
          ModelExtractor me = new ModelExtractor( kb );
          me.setSelector( StatementType.ALL_STATEMENTS );
          Graph graph = me.extractModel().getGraph();
          return graph.find( Triple.ANY );
        }
      }
    );

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    rawModel.add(a, RDF.type, C);
    rawModel.add(C, RDFS.subClassOf, D);
    
    OntModel model = ModelFactory.createOntologyModel( PelletReasonerFactory.THE_SPEC, rawModel );


    ModelExtractor extractor = new ModelExtractor(model);
    Model inferences = extractor.extractModel();
    
    assertTrue(inferences.contains(a, RDF.type, D));
  }

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