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

com.hp.hpl.jena.rdf.model.RDFList

Provides a convenience encapsulation for lists formed from chains of RDF statements arranged to form a head/tail cons-cell structure. The properties that form the links between cells, and from cells to values, are specified by a vocabulary interface, so this abstraction is designed to cope equally well with DAML lists, RDF lists, and user-defined lists.

A well-formed list has cells that are made up of three statements: one denoting the rdf:type of the list cell, one denoting the link to the value of the list at that point, and one pointing to the list tail. If a list cell is not well-formed, list operations may fail in unpredictable ways. However, to explicitly check that the list is well-formed at all times is expensive. Therefore the list operates in two modes: in strict mode, the well-formedness of the list is checked at the start of each list operation, and an {@link InvalidListException} is thrown if the list is notwell- formed. This ensures that list operations are safe, but will slow down processing. In non-strict mode, this checking is switched off, but can be invoked explicitly by clients by calling {@link #isValid}. By default, RDF lists are processed in non-strict mode.

  {
    for (int i = 0; i <= 5; i++)
    {
      model.read( getFileName("ontology/list" + i + ".rdf"));


      RDFList l0 = getListRoot(model);


      // get the tail n times, should be nil at the end
      for (int j = 0; j < i; j++)
      {
        l0 = l0.getTail();
      }


      Assert.assertTrue("Should have reached the end of the list after "
          + i + " getTail()'s", l0.isEmpty());
    }
  }

View Full Code Here

    final Property p = model.createProperty(TestList.NS, "p");


    // a list of the nil object, but not typed
    final Resource nil = RDF.nil;
    model.add(root, p, nil);
    final RDFList l0 = getListRoot(model);
    checkValid("valid1", l0, true);


    // add another node to the head of the list
    final Resource badList = model.createResource();
    model.getRequiredProperty(root, p).remove();
    model.add(root, p, badList);
    model.add(badList, RDF.type, RDF.List);


    final RDFList l1 = getListRoot(model);
    checkValid("valid2", l1, false);


    // checkValid( "valid3", l1, false );


    model.add(badList, RDF.first, "fred");

View Full Code Here

     * @param classes
     *            {@link OntClass}es from which union class will be created
     * @return {@link OntClass} instance.
     */
    public OntClass createUnionClass(List<Resource> classes) {
        RDFList list = ontModel.createList();
        for (Resource klass : classes) {
            list.cons(klass);
        }
        return createUnionClass(list);
    }

View Full Code Here

    {
      throw new IllegalArgumentException("RDFList may not be null");
    }


    // check that property has a securedModel.
    RDFList goodList = rdfList;
    if (goodList.getModel() == null)
    {
      goodList = securedModel.createList(rdfList.asJavaList().iterator());
    }


    final ItemHolder<RDFList, SecuredRDFList> holder = new ItemHolder<RDFList, SecuredRDFList>(

View Full Code Here

      return list.size() == 0 ? ModelFactory.createDefaultModel()
          .createList() : list.copy();
    }
    else
    {
      final RDFList copy = copy();
      if (list.size() > 0)
      {
        copy.concatenate(list.copy());
      }
      return copy;
    }
  }

View Full Code Here

   * @return the modified RDFList.
   */
  private RDFList baseRemove( final RDFList val )
  {


    RDFList prev = null;
    RDFList cell = holder.getBaseItem();
    final boolean searching = true;


    while (searching && !cell.isEmpty())
    {
      if (cell.equals(val))
      {
        // found the value to be removed
        final RDFList tail = cell.getTail();
        if (prev != null)
        {
          prev.setTail(tail);
        }

View Full Code Here


  @Override
  public RDFList remove( final RDFNode val )
  {
    checkUpdate();
    RDFList cell = null;
    boolean denied = false;


    if (!canDelete(new Triple(Node.ANY, listFirst().asNode(), val.asNode())))
    {
      // iterate over the deletable items
      final ExtendedIterator<RDFList> iter = getSecuredRDFListIterator(Action.Delete);// .mapWith(new
                                              // SecuredListMap());
      while (iter.hasNext())
      {
        cell = iter.next();


        if (val.equals(cell.getRequiredProperty(listFirst())
            .getObject()))
        {
          if (canDelete(new Triple(cell.asNode(), listFirst()
              .asNode(), val.asNode())))
          {
            return SecuredRDFListImpl.getInstance(getModel(),
                baseRemove(cell));

View Full Code Here

          final Triple t = new Triple(list.asNode(), listFirst()
              .asNode(), retval.asNode());
          final Triple t2 = new Triple(list.asNode(), listFirst()
              .asNode(), value.asNode());
          checkUpdate(t, t2);
          final RDFList base = (RDFList) list.getBaseItem();
          base.getRequiredProperty(listFirst()).changeObject(value);
          return retval;
        }
        else
        {
          idx++;

View Full Code Here

  public RDFList next()
  {
    if (hasNext())
    {
      found = null;
      final RDFList retval = current;
      incrementCurrent();
      return retval;
    }
    throw new NoSuchElementException();
  }

View Full Code Here

    Assert.assertNotNull("Root resource should not be null", root);


    final Resource listHead = root.getRequiredProperty(
        m.getProperty(TestList.NS + "p")).getResource();


    final RDFList l = listHead.as(RDFList.class);
    Assert.assertNotNull("as(RDFList) should not return null for root", l);


    return l;
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of com.hp.hpl.jena.rdf.model.RDFList

com.hp.gloze.www_w3_org_2001_XMLSchema.complexType

com.hp.gloze.www_w3_org_2001_XMLSchema.element

com.hp.gloze.www_w3_org_2001_XMLSchema.list

com.hp.gloze.www_w3_org_2001_XMLSchema.restriction

com.hp.gloze.www_w3_org_2001_XMLSchema.schema

com.hp.gloze.www_w3_org_2001_XMLSchema.union

com.hp.hpl.jena.rdf.model.test.TestList

org.apache.jena.security.model.impl.SecuredRDFListImpl

org.apache.jena.security.utils.RDFListIterator

org.apache.stanbol.cmsadapter.servicesapi.helper.OntologyResourceHelper

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.