Examples of com.hp.hpl.jena.rdf.model.StmtIterator

com.hp.hpl.jena.rdf.model.StmtIterator
An iterator which returns RDF Statements.
RDF iterators are standard Java iterators, except that they have extras method to return specifically typed objects, in this case RDF Statements and have a close() method that should be called to free resources if the application does not complete the iteration.

        ? config.getVocabularyStore().getHighIndegreeProperties()
        : config.getVocabularyStore().getHighOutdegreeProperties();
    Map<Property, Integer> highCounts = isInverse
        ? highIndegreeProperties
        : highOutdegreeProperties;
    StmtIterator it = isInverse
        ? model.listStatements(null, null, resource)
        : resource.listProperties();
    Map<Property, Integer> valueCounts = new HashMap<Property, Integer>();
    while (it.hasNext()) {
      Property p = it.next().getPredicate();
      if (!valueCounts.containsKey(p)) {
        valueCounts.put(p, 0);
      }
      valueCounts.put(p, valueCounts.get(p) + 1);
    }

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    List<Statement> o_stmts = new ArrayList<Statement>(); 
    
    // new statements to be added:
    List<Statement> n_stmts = new ArrayList<Statement>(); 
    
    StmtIterator existingStmts = model.listStatements();
    while ( existingStmts.hasNext() ) {
      Statement o_stmt = existingStmts.nextStatement();
      Resource sbj = o_stmt.getSubject();
      Property prd = o_stmt.getPredicate();
      RDFNode obj = o_stmt.getObject();
      
      boolean any_change = false;

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    Resource ontRes = JenaUtil2.getFirstIndividual(model, OWL.Ontology);
    List<Statement> prexistStatements = null; 
    if ( ontRes != null ) {
      prexistStatements = new ArrayList<Statement>();
//      log.info("Getting pre-existing properties for OWL.Ontology individual: " +ontRes.getURI());
      StmtIterator iter = ontRes.listProperties();
      while ( iter.hasNext() ) {
        Statement st = iter.nextStatement();
        prexistStatements.add(st);
      }  
    }

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    // new statements to be added:
    List<Statement> n_stmts = new ArrayList<Statement>(); 
    
    // check all statements in the model:
    StmtIterator existingStmts = model.listStatements();
    while ( existingStmts.hasNext() ) {
      Statement o_stmt = existingStmts.nextStatement();
      Resource sbj = o_stmt.getSubject();
      Property prd = o_stmt.getPredicate();
      RDFNode obj = o_stmt.getObject();
      
      // will indicate that o_stmt is affected by the namespace change:

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    Resource ontRes = JenaUtil2.getFirstIndividual(model, OWL.Ontology);
    List<Statement> prexistStatements = null; 
    if ( ontRes != null ) {
      prexistStatements = new ArrayList<Statement>();
      log.info("Getting pre-existing properties for OWL.Ontology individual: " +ontRes.getURI());
      StmtIterator iter = ontRes.listProperties();
      while ( iter.hasNext() ) {
        Statement st = iter.nextStatement();
        prexistStatements.add(st);
      }  
    }

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    if ( ont != null ) {
      prexistStatements = new ArrayList<Statement>();
      if ( log.isDebugEnabled() ) {
        log.debug("Getting pre-existing properties from Ontology: " +ont.getURI());
      }
      StmtIterator iter = ont.listProperties();
      while ( iter.hasNext() ) {
        Statement st = iter.nextStatement();
        prexistStatements.add(st);
      }  
    }

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    Resource ontRes = JenaUtil2.getFirstIndividual(model, OWL.Ontology);
    List<Statement> prexistStatements = null; 
    if ( ontRes != null ) {
      prexistStatements = new ArrayList<Statement>();
      log.info("Getting pre-existing properties for OWL.Ontology individual: " +ontRes.getURI());
      StmtIterator iter = ontRes.listProperties();
      while ( iter.hasNext() ) {
        Statement st = iter.nextStatement();
        prexistStatements.add(st);
      }  
    }

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    }
  }


  // verbatim copy from JenaUtil except for the generics supportee by the recent jena version
  public static Resource getFirstIndividual(Model model, Resource resType) {
    StmtIterator iter = model.listStatements(null, RDF.type, resType);
    if (iter.hasNext()) {
      Statement sta = (Statement) iter.next();
      return (Resource) sta.getSubject();
    } else
      return null;
  }

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      // Log.error messages have been already generated.
    }


    if ( false && log.isDebugEnabled() ) {
      log.debug("_listStatements:");
      StmtIterator iter = _model.listStatements();
      while (iter.hasNext()) {
        com.hp.hpl.jena.rdf.model.Statement sta = iter.nextStatement();
        Resource sjt = sta.getSubject();
        log.debug("      " + 
            PrintUtil.print(sjt)
            + "   " +
            PrintUtil.print(sta.getPredicate().getURI())

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    }


    Model termModel = ModelFactory.createDefaultModel();
    
    if ( true ) { // get all statements about the term
      StmtIterator iter = model.listStatements(termRes, (Property) null, (Property) null);
      if (iter.hasNext()) {
        while (iter.hasNext()) {
          com.hp.hpl.jena.rdf.model.Statement sta = iter.nextStatement();
          
          termModel.add(sta);
        }
      }
    }
    
    if ( true ) { // test for subclasses
      StmtIterator iter = model.listStatements(null, RDFS.subClassOf, termRes);
      if  ( iter.hasNext() ) {
        while ( iter.hasNext() ) {
          com.hp.hpl.jena.rdf.model.Statement sta = iter.nextStatement();
          
          termModel.add(sta);
        }
      }
    }
    


    if ( model instanceof OntModel ) {
      OntModel ontModel = (OntModel) model;
      ExtendedIterator<Individual> iter = ontModel.listIndividuals(termRes);
      if ( iter.hasNext() ) {
        while ( iter.hasNext() ) {
          Resource idv = (Resource) iter.next();


          termModel.add(idv, RDF.type, termRes);
        }
      }
    }

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