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

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

        b = new IndexBuilderNode(indexWriter) ;
        Resource r2 = ResourceFactory.createResource() ;
        b.index(r2, "bar") ;


        IndexLARQ index = b.getIndex() ;
        NodeIterator nIter = index.searchModelByIndex("foo") ;
        assertEquals(1, TestLARQUtils.count(nIter)) ;
        nIter = index.searchModelByIndex("bar") ;
        assertEquals(1, TestLARQUtils.count(nIter)) ;
    }

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                    Resource b = m.createResource( "http://foo/bar#b" );
                    OntProperty p = m.createOntProperty( "http://foo/bar#p" );
                    Literal l = m.createTypedLiteral( false );
                    m.add( a, p, b );
                    m.add( a, p, l );
                    NodeIterator ni = a.listPropertyValues( p );


                    while (ni.hasNext()) {
                        RDFNode n = ni.nextNode();
                        if (n.isResource()) {
                            assertEquals( b, n );
                            assertTrue( "Return value should be an OntResource", n instanceof OntResource );
                        }
                    }

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        DatasetGraphTDB dsg = (DatasetGraphTDB)TDBFactory.createDatasetGraph(location);


        TDBLoader.load(dsg, in, false);
        
        IndexLARQ index = AssemblerLARQ.make(dsg.toDataset(), "tmp/lucene");
        NodeIterator iter = index.searchModelByIndex("A*"); // use Lucene syntax here
        while ( iter.hasNext() ) {
          System.out.println(iter.next());
        }
  }

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        Iterator<RDFNode> iter = new Map1Iterator<HitLARQ, RDFNode>(converter, search(queryString)) ;
        if ( scoreLimit > 0 )
            iter = new IteratorTruncate<RDFNode>(new ScoreTest(scoreLimit), iter) ;
        
        NodeIterator nIter = new NodeIteratorImpl(iter, null) ; 
        return nIter ;
    }

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      seq.add(i);
    }
    //
    final List<RDFNode> retained = new ArrayList<RDFNode>();
    //
    final NodeIterator nIter = seq.iterator();
    for (int i = 0; i < num; i += 1)
    {
      final RDFNode x = nIter.nextNode();
      if (retain[i])
      {
        retained.add(x);
      }
      else
      {
        nIter.remove();
      }
    }
    //
    Assert.assertFalse(nIter.hasNext());
    Assert.assertEquals(retained, seq.iterator().toList());
  }

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    for (int i = 0; i < num; i += 1)
    {
      c.add(i);
    }
    Assert.assertEquals(num, c.size());
    final NodeIterator it = c.iterator();
    for (int i = 0; i < num; i += 1)
    {
      Assert.assertEquals(i, ((Literal) it.nextNode()).getInt());
    }
    Assert.assertFalse(it.hasNext());
  }

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    final Container c = createContainer();
    for (int i = 0; i < num; i += 1)
    {
      c.add(i);
    }
    final NodeIterator it = c.iterator();
    for (int i = 0; i < num; i += 1)
    {
      it.nextNode();
      if (retain[i] == false)
      {
        it.remove();
      }
    }
    final NodeIterator s = c.iterator();
    while (s.hasNext())
    {
      final int v = ((Literal) s.nextNode()).getInt();
      Assert.assertFalse(found[v]);
      found[v] = true;
    }
    for (int i = 0; i < num; i += 1)
    {

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  public void testListObjectsOfProperty()
  {
    final boolean objf[] = new boolean[numObj];


    final NodeIterator nIter = model.listObjectsOfProperty(predicate[1]);
    while (nIter.hasNext())
    {
      final RDFNode obj = nIter.nextNode();
      Boolean found = false;
      for (int i = 0; i < numObj; i++)
      {
        if (obj.equals(object[i]))
        {

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  }


  public void testListObjects()
  {
    int count = 0;
    NodeIterator iter;
    iter = model.listObjects();
    while (iter.hasNext())
    {
      iter.nextNode();
      count++;
    }
    Assert.assertEquals(num * num, count);
  }

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  }


  public void testObjectsOfProperty()
  {


    NodeIterator iter;
    final boolean[] object = new boolean[num * num];
    for (int i = 0; i < (num * num); i++)
    {
      object[i] = false;
    }
    iter = model.listObjectsOfProperty(predicate[0]);
    while (iter.hasNext())
    {
      final Literal l = (Literal) iter.nextNode();
      final int i = l.getInt();
      object[i] = true;
    }
    for (int i = 0; i < (num * num); i++)
    {

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