Examples of org.openrdf.model.BNode

org.openrdf.model.BNode
A blank node (aka bnode, aka anonymous node). A blank node has an identifier to be able to compare it to other blank nodes internally. Please note that, conceptually, blank node equality can only be determined by examining the statements that refer to them.

      throw new SailConfigException("No type specified for repository implementation");
    }
  }


  public Resource export(Graph graph) {
    BNode implNode = graph.getValueFactory().createBNode();


    if (type != null) {
      graph.add(implNode, SAILTYPE, graph.getValueFactory().createLiteral(type));
    }

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  public void handleSolution(BindingSet bindingSet)
    throws TupleQueryResultHandlerException
  {
    try {
      BNode solutionNode = vf.createBNode();


      reportStatement(resultSetNode, SOLUTION, solutionNode);


      for (Binding binding : bindingSet) {
        BNode bindingNode = vf.createBNode();


        reportStatement(solutionNode, BINDING, bindingNode);
        reportStatement(bindingNode, VARIABLE, vf.createLiteral(binding.getName()));


        Value value = binding.getValue();


        // Map bnodes to new bnodes to prevent collisions with the bnodes
        // generated for the result format
        if (value instanceof BNode) {
          BNode mappedBNode = bnodeMap.get(value);


          if (mappedBNode == null) {
            mappedBNode = vf.createBNode();
            bnodeMap.put((BNode)value, mappedBNode);
          }

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    if (this == o) {
      return true;
    }


    if (o instanceof BNode) {
      BNode otherNode = (BNode)o;
      return this.getID().equals(otherNode.getID());
    }


    return false;
  }

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    return memURI;
  }


  public BNode createBNode(String nodeID) {
    BNode tempBNode = new BNodeImpl(nodeID);
    MemBNode memBNode = getMemBNode(tempBNode);


    if (memBNode == null) {
      memBNode = createMemBNode(tempBNode);
    }

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  public RdbmsBNode createBNode(String nodeID) {
    RdbmsBNode resource = bnodes.findInCache(nodeID);
    if (resource == null) {
      try {
        BNode impl = vf.createBNode(nodeID);
        resource = new RdbmsBNode(impl);
        bnodes.cache(resource);
      } catch (SQLException e) {
        throw new RdbmsRuntimeException(e);
      } catch (InterruptedException e) {

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    }
    finally {
      statements.close();
    }


    BNode bnode = (BNode)st.getSubject();


    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream out = new ObjectOutputStream(baos);
    out.writeObject(bnode);
    out.close();


    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    ObjectInputStream in = new ObjectInputStream(bais);
    BNode deserializedBNode = (BNode)in.readObject();
    in.close();


    assertTrue(bnode.equals(deserializedBNode));


    assertTrue(testCon.hasStatement(bnode, name, nameBob, true));

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    con.setNamespace("doap", DOAP.NAMESPACE);
    con.setNamespace("earl", EARL.NAMESPACE);
    con.setNamespace("dc", DC.NAMESPACE);


    projectNode = vf.createBNode();
    BNode releaseNode = vf.createBNode();
    con.add(projectNode, RDF.TYPE, DOAP.PROJECT);
    con.add(projectNode, DOAP.NAME, vf.createLiteral("OpenRDF Sesame"));
    con.add(projectNode, DOAP.RELEASE, releaseNode);
    con.add(releaseNode, RDF.TYPE, DOAP.VERSION);
    con.add(releaseNode, DOAP.NAME, vf.createLiteral("Sesame 2.0-SNAPSHOT"));

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      else {
        throw new RuntimeException("Unexpected test type: " + test.getClass());
      }


      try {
        BNode testNode = vf.createBNode();
        BNode resultNode = vf.createBNode();
        con.add(testNode, RDF.TYPE, EARL.ASSERTION);
        con.add(testNode, EARL.ASSERTEDBY, asserterNode);
        con.add(testNode, EARL.MODE, EARL.AUTOMATIC);
        con.add(testNode, EARL.SUBJECT, projectNode);
        con.add(testNode, EARL.TEST, vf.createURI(testURI));

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  public void saveUserRecommendationPrefs(String user) {
    Graph gToAdd = SesameUtils.createGraph();  
    ValueFactory vf = gToAdd.getValueFactory();
    
    Resource r = vf.createURI(user);
    BNode bn = vf.createBNode();
    URI uint = vf.createURI("http://www.w3.org/2001/XMLSchema#integer");
    
    try {
      bn.addProperty(Concepts.HAS_TYPE.get(gToAdd), vf.createLiteral(this.name.getName(), vf.createURI("http://www.w3.org/2001/XMLSchema#string")));
      bn.addProperty(Concepts.HAS_LIMIT.get(gToAdd), vf.createLiteral(String.valueOf(this.limit), uint));
      if(this.weight != null)
        bn.addProperty(Concepts.HAS_WEIGHT.get(gToAdd), vf.createLiteral(String.valueOf(this.weight), uint));
      
      r.addProperty(Concepts.HAS_RECOMMENDATION.get(gToAdd), bn);


      SesameWrapper.addGraph(Repository.FOAFREALM_REPOSITORY.getLocalRepository(), gToAdd);
    } catch (GraphException e) {

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        }
    }


    @Test
    public void testCreateBNodeWithNullArgumentWorks() {
        BNode b = ValueFactoryImpl.getInstance().createBNode(null);
        assertNull(b.stringValue());
        assertEquals(b, b);
    }

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