private static void addTypeToAll(Resource type, Set<Resource> candidates) {
   List<Resource> types = equivalentTypes(type);
   for (Resource element : candidates) {
     Resource resource = element;
     for (int i = 0; i < types.size(); i += 1) resource.addProperty(RDF.type, types.get(i));
   }
 }
Beispiel #2
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  public static String RenderTemplatePage(Bindings b, String templateName) throws IOException {

    MediaType mt = MediaType.TEXT_HTML;
    Resource config = model.createResource("eh:/root");
    Mode prefixMode = Mode.PreferPrefixes;
    ShortnameService sns = new StandardShortnameService();

    List<Resource> noResults = CollectionUtils.list(root.inModel(model));
    Graph resultGraph = graphModel.getGraph();

    resultGraph.getPrefixMapping().setNsPrefix("api", API.NS);
    resultGraph.add(Triple.create(root.asNode(), API.items.asNode(), RDF.nil.asNode()));

    APIResultSet rs = new APIResultSet(resultGraph, noResults, true, true, "details", View.ALL);
    VelocityRenderer vr = new VelocityRenderer(mt, null, config, prefixMode, sns);

    VelocityRendering vx = new VelocityRendering(b, rs, vr);

    VelocityEngine ve = vx.createVelocityEngine();
    VelocityContext vc = vx.createVelocityContext(b);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    Writer w = new OutputStreamWriter(bos, "UTF-8");
    Template t = ve.getTemplate(templateName);

    t.merge(vc, w);
    w.close();

    return bos.toString();
  }
  public Resource rowColRef(int col, Model pmlModel) {
    Resource epa = pmlModel.createResource(Ontology.EPA.NS + "EPA");
    Resource source = pmlModel.createResource(pmlModel.createResource(Ontology.PMLP.SourceUsage));
    Resource frag =
        pmlModel.createResource(pmlModel.createResource(Ontology.PMLP.DocumentFragmentByRowCol));
    Resource document =
        pmlModel.createResource(src, pmlModel.createResource(Ontology.PMLP.Dataset));

    Property prop;

    // Relate source to fragment
    prop = pmlModel.createProperty(Ontology.PMLP.hasSource);
    source.addProperty(prop, frag);

    // Relate row/col information
    prop = pmlModel.createProperty(Ontology.PMLP.hasFromCol);
    frag.addLiteral(prop, col);
    prop = pmlModel.createProperty(Ontology.PMLP.hasToCol);
    frag.addLiteral(prop, col);
    prop = pmlModel.createProperty(Ontology.PMLP.hasFromRow);
    frag.addLiteral(prop, row);
    prop = pmlModel.createProperty(Ontology.PMLP.hasToRow);
    frag.addLiteral(prop, row);

    // Relate fragment to document
    prop = pmlModel.createProperty(Ontology.PMLP.hasDocument);
    frag.addProperty(prop, document);

    // Relate document to publisher
    prop = pmlModel.createProperty(Ontology.PMLP.hasPublisher);
    document.addProperty(prop, epa);

    return source;
  }
Beispiel #4
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 private void addTriplePatterns(Property predicate, Set<TriplePattern> results) {
   StmtIterator it = getModel().listStatements(null, predicate, this);
   while (it.hasNext()) {
     Resource subject = it.nextStatement().getSubject();
     results.add((TriplePattern) subject.as(TriplePattern.class));
   }
 }
 private void updateAddRemoveDataGetterStatements(
     OntModel displayModel,
     Model removeStatements,
     Model addStatements,
     Resource oldType,
     Resource newType) {
   log.debug("Old type: " + oldType.getURI() + " - newType: " + newType.getURI());
   removeStatements.add(displayModel.listStatements(null, RDF.type, oldType));
   StmtIterator oldStatements = displayModel.listStatements(null, RDF.type, oldType);
   while (oldStatements.hasNext()) {
     Statement stmt = oldStatements.nextStatement();
     addStatements.add(stmt.getSubject(), RDF.type, newType);
   }
   // Print out remove and add statements here
   StringWriter sw = new StringWriter();
   try {
     log.debug(
         "Adding statements with old data getter types to remove statements, remove statements is now");
     removeStatements.write(sw, "N3");
     log.debug(sw.toString());
     sw.close();
     sw = new StringWriter();
     log.debug(
         "Adding statements with new data getter types to add statements, add statements is now");
     addStatements.write(sw, "N3");
     log.debug(sw.toString());
     sw.close();
   } catch (Exception ex) {
     log.error("Error occurred in writing out remove and statements for data getter types", ex);
   }
 }
Beispiel #6
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  public static Method create(QuerySolution qs) throws Exception {
    Resource id = (Resource) qs.get("x");
    Literal fullPath = (Literal) qs.get("fullPath");
    Literal name = (Literal) qs.get("name");
    Literal accessModifier = (Literal) qs.get("accessModifier");
    Literal lineStart = (Literal) qs.get("line_start");
    Literal lineEnd = (Literal) qs.get("line_end");
    Resource returnType = (Resource) qs.get("returnType");
    Resource hasParameter = (Resource) qs.get("hasParameter");
    Resource throwsException = (Resource) qs.get("throwsException");
    Resource belongsTo = (Resource) qs.get("belongsTo");

    Method meth = new Method(id.toString(), name.getValue().toString());
    meth.setAccessModifier(accessModifier.getValue().toString());
    meth.setFullPath(fullPath.getValue().toString());
    meth.setLineStart(lineStart.getInt());
    meth.setLineEnd(lineEnd.getInt());
    meth.setReturnType(returnType.toString());
    if (hasParameter != null) {
      meth.setHasParameter(hasParameter.toString());
    }
    if (throwsException != null) {
      meth.setThrowsException(throwsException.toString());
    }
    meth.setBelongsTo(belongsTo.toString());

    return meth;
  }
  public List<ReMSerialisation> getReMSerialisations() throws OREException {
    try {
      List<ReMSerialisation> serialisations = new ArrayList<ReMSerialisation>();
      StmtIterator itr = res.listProperties(ORE.isDescribedBy);
      while (itr.hasNext()) {
        Statement statement = itr.nextStatement();
        Resource resource = (Resource) statement.getObject();
        StmtIterator itr2 = resource.listProperties(DC.format);
        StmtIterator itr3 = resource.listProperties(OREX.isAuthoritativeFor);
        String mime = "application/octet-stream";
        if (itr2.hasNext()) {
          Statement stmt = itr2.nextStatement();
          mime = ((Literal) stmt.getObject()).getLexicalForm();
        }
        boolean authoritative = false;
        if (itr3.hasNext()) {
          authoritative = true;
        }
        ReMSerialisation serialisation = new ReMSerialisation(mime, new URI(resource.getURI()));
        serialisation.setAuthoritative(authoritative);

        serialisations.add(serialisation);
      }
      return serialisations;
    } catch (URISyntaxException e) {
      throw new OREException(e);
    }
  }
Beispiel #8
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 public Resource getRDFResource() {
   OntModel vocab = OntologyFactory.getTalenticaOntology();
   Resource price = vocab.createResource(getUri());
   price.addProperty(vocab.getProperty(AMNT_URI), String.valueOf(this.amount));
   price.addProperty(vocab.getProperty(CURRENCY_URI), this.currency);
   return price;
 }
  public Resource createGLIFinstance(String bp_type, String id, AttribGroupSet ags) {

    Resource r = rdfModel.createResource(KB_NS_PREFIX + "GLIF3_5_BitPathways_Class_" + classIndex);
    classIndex++;

    String type = getGLIFtype(bp_type);

    Resource r_type = rdfModel.createResource(GLIF_Factory.KB_NS_PREFIX + type);
    r.addProperty(RDF.type, r_type);

    String label = ags.getSpecialValue("label")[0].toString();
    if (label == null) label = "";
    r.addProperty(RDFS.label, label);
    r.addProperty(rdfModel.createProperty(KB_NS_PREFIX + "name"), label);

    if (type.equalsIgnoreCase("Patient_State")) {
      r.addProperty(rdfModel.createProperty(KB_NS_PREFIX + "display_name"), label);
    }

    if (bp_type.equalsIgnoreCase("TASK")) {
      addTaskProperties(r, ags);
    } else if (bp_type.equalsIgnoreCase("DECISION")) {
      addDecisionProperties(r, ags);
    } else if (bp_type.equalsIgnoreCase("START")) {
      addStartProperties(r, ags);
    } else if (bp_type.equalsIgnoreCase("END")) {
      addEndProperties(r, ags);
    } else if (bp_type.equalsIgnoreCase("SUBPATH")) {
      addSubpathProperties(r, ags);
    }

    stepSet.put(id, r);

    return r;
  }
  /** @todo Add Documentation. */
  @Override
  public boolean isFedoraGraphSubject(Resource subject) {
    checkArgument(subject != null, "null cannot be a Fedora object!");
    assert (subject != null);

    return subject.isURIResource() && subject.getURI().startsWith("info:fedora/");
  }
Beispiel #11
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  /**
   * Returns reflection of the given resource <code>r</code> into given domain <code>mDomain</code>.
   *
   * @param uri uri of the resource to be reflected
   * @param mDB is model, which contains statements about resource <code>uri</code>
   * @param mDomain domain model describing classes
   * @return <
   *     <UL>
   *       <LI><code>uri</code> if resource with this <code>uri</code> , i.e. this resource occurs
   *           as a subject of a any statement in <code>mDomain</code>.
   *       <LI>URI of <code>C</code>, if resource with this <code>uri</code> does NOT belong do
   *           <code>mDomain</code> and instance of resource (class) C, belonging do <code>mDomain
   *           </code>.
   *       <LI><code>null</code> -- otherwise.
   *     </UL>
   */
  public static Resource getReflection(Resource r, OntModel mDB, OntModel mDomain) {
    // TODO The idea of reflexion becomes illogical when the individual as
    // an instance of more then one type (class).

    if (mDomain.containsResource(r))
      // Associate resource with mDomain
      return (Resource) r.inModel(mDomain);

    // Check whether ontr is instance (individual) of some class...
    // Associate it for the test with mDB model
    r = (Resource) r.inModel(mDB);
    for (StmtIterator it = r.listProperties(RDF.type); it.hasNext(); ) {
      Resource clazz = it.nextStatement().getResource();
      // ...and this class belongs to domain ontology
      if (mDomain.containsResource(clazz)) {
        // Since clazz is object of rdf:type predicate, than it is
        // rdfs:Resource.
        // Associate it with mDomain.
        return (Resource) clazz.inModel(mDomain);
      }
    }

    // The value is undefined
    return null;
  }
Beispiel #12
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  @Test
  public void shouldSortTriplesForDisplay() {
    final Model model = createDefaultModel();

    model.setNsPrefix("prefix", "namespace");
    final Property propertyA = model.createProperty("namespace", "a");
    final Property propertyB = model.createProperty("namespace", "b");
    final Property propertyC = model.createProperty("c");
    final Literal literalA = model.createLiteral("a");
    final Literal literalB = model.createLiteral("b");
    final Resource resourceB = model.createResource("b");
    model.add(resourceB, propertyA, literalA);

    final Resource a = model.createResource("a");
    model.add(a, propertyC, literalA);

    model.add(a, propertyB, literalA);

    model.add(a, propertyA, literalA);
    model.add(a, propertyA, literalB);

    final Iterator<Quad> iterator = DatasetFactory.create(model).asDatasetGraph().find();

    final List<Quad> sortedTriples = testObj.getSortedTriples(model, iterator);

    sortedTriples.get(0).matches(ANY, a.asNode(), propertyA.asNode(), literalA.asNode());
    sortedTriples.get(1).matches(ANY, a.asNode(), propertyA.asNode(), literalB.asNode());
    sortedTriples.get(2).matches(ANY, a.asNode(), propertyB.asNode(), literalA.asNode());
    sortedTriples.get(3).matches(ANY, a.asNode(), propertyC.asNode(), literalA.asNode());
    sortedTriples.get(4).matches(ANY, resourceB.asNode(), propertyC.asNode(), literalA.asNode());
  }
 public MappedResource getIndexResource() {
   if (!config.hasProperty(CONF.indexResource)) {
     return null;
   }
   return getMappedResourceFromDatasetURI(
       config.getProperty(CONF.indexResource).getResource().getURI());
 }
Beispiel #14
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  private static Set<Property> getPermissions(String userPrefix, String username, String uri) {
    Set<Property> permissions = new HashSet<Property>();
    Resource resource = configModel.createResource(uri);
    Resource user;
    if (username == null) user = PERM.Public;
    else user = configModel.createResource(userPrefix + username);

    StmtIterator stmts = configModel.listStatements(user, null, resource);
    while (stmts.hasNext()) permissions.add(stmts.next().getPredicate());

    String queryString = "";
    queryString += "PREFIX perm: <http://vocab.ox.ac.uk/perm#>\n";
    queryString += "SELECT ?perm ?regex WHERE {\n";
    queryString += "  <" + user.getURI() + "> ?perm ?rm .";
    queryString += "  ?rm a perm:ResourceMatch ;";
    queryString += "      perm:matchExpression ?regex }";

    com.hp.hpl.jena.query.Query query = QueryFactory.create(queryString);
    QueryExecution qexec = QueryExecutionFactory.create(query, configModel);
    ResultSet results = qexec.execSelect();
    while (results.hasNext()) {
      QuerySolution sol = results.next();
      if (uri.matches(((Literal) sol.get("regex")).getLexicalForm()))
        permissions.add(configModel.createProperty(((Resource) sol.get("perm")).getURI()));
    }

    if (username != null) permissions.addAll(getPermissions(userPrefix, null, uri));
    return permissions;
  }
  protected String jcrMixinNameFromRdfResource(final Resource mixinResource)
      throws RepositoryException {

    final String namespace = getJcrNamespaceForRDFNamespace(mixinResource.getNameSpace());
    String namespacePrefix = null;
    final Map<String, String> streamNSMap =
        checkNotNull(stream().namespaces(), "Use an empty map of namespaces, not null!");
    if (streamNSMap.containsValue(namespace)) {
      LOGGER.debug("Found namespace: {} in stream namespace mapping.", namespace);
      for (final Map.Entry<String, String> entry : streamNSMap.entrySet()) {
        final String streamNamespace = entry.getValue();
        if (namespace.equals(streamNamespace)) {
          LOGGER.debug(
              "Found namespace: {} in stream namespace mapping with prefix: {}.",
              namespace,
              namespacePrefix);
          namespacePrefix = entry.getKey();
        }
      }
    } else {
      try {
        namespacePrefix = session().getNamespacePrefix(namespace);
        LOGGER.debug(
            "Found namespace: {} in repository namespace mapping with prefix: {}.",
            namespace,
            namespacePrefix);
      } catch (final NamespaceException e) {
        throw new MalformedRdfException(
            "Unable to resolve registered namespace for resource " + mixinResource.toString(), e);
      }
    }
    final String mixinName = namespacePrefix + ":" + mixinResource.getLocalName();
    LOGGER.debug("Constructed JCR mixin name: {}", mixinName);
    return mixinName;
  }
 public void testCreateAnonResourceWithNull() {
   final Resource r = model.createResource((String) null);
   Assert.assertTrue(r.isAnon());
   Assert.assertNull(r.getURI());
   Assert.assertNull(r.getNameSpace());
   Assert.assertNull(r.getLocalName());
 }
 @Override
 public void processInput(Resource input, Resource output) {
   final Model model = ModelFactory.createDefaultModel();
   final List<Statement> tipURIs = input.listProperties(Vocab.has).toList();
   final SublistIterator<Statement> tipsIterator =
       new SublistIterator<Statement>(tipURIs, QUERY_CHUNK_SIZE);
   while (tipsIterator.hasNext()) {
     final List<String> ancestorQueryBlocks = new ArrayList<String>();
     final List<String> parentQueryBlocks = new ArrayList<String>();
     final List<Statement> tips = tipsIterator.next();
     for (Statement statement : tips) {
       final String tipURI =
           statement.getResource().getProperty(DC.subject).getResource().getURI();
       ancestorQueryBlocks.add(String.format(ancestorQueryBody, tipURI));
       parentQueryBlocks.add(String.format(parentQueryBody, tipURI));
     }
     final String ancestorQuery =
         String.format(ancestorQueryHead, StringUtils.join(ancestorQueryBlocks, " UNION "));
     final String parentQuery =
         String.format(parentQueryHead, StringUtils.join(parentQueryBlocks, ", "));
     QueryEngineHTTP ancestorQE = new QueryEngineHTTP(endpoint, ancestorQuery);
     QueryEngineHTTP parentQE = new QueryEngineHTTP(endpoint, parentQuery);
     ancestorQE.execConstruct(model);
     ancestorQE.close();
     parentQE.execConstruct(model);
     parentQE.close();
   }
   this.processNode(Vocab.TaxonomyRoot, model, output.getModel(), null, output);
   output.getModel().setNsPrefix("cdao", "http://www.evolutionaryontology.org/cdao/1.0/cdao.owl#");
 }
Beispiel #18
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  public static Offering addServiceFeatures(Resource service, Offering offering) {
    ArrayList<QualitativeFeature> qualFeatures = offering.getQualitativeFeatures();
    ArrayList<QuantitativeFeature> quantFeatures = offering.getQuantitativeFeatures();

    /*//adding the offering provider
    if(service.hasProperty(hasProvider)){
    	Resource provider = service.getPropertyResourceValue(hasProvider);
    	if(provider.hasProperty(page))
    		offering.setURL(provider.getProperty(page).getString());
    }*/

    // get qualitativeFeatures
    StmtIterator iter = service.listProperties(qualitativeProductOrServiceProperty);
    // System.out.println(iter.toList().size());
    while (iter.hasNext()) {
      Resource feature = iter.next().getObject().asResource();
      qualFeatures.addAll(convertQualitativeFeatures(feature));
    }
    // get quantitative
    StmtIterator iter2 = service.listProperties(quantitativeProductOrServiceProperty);
    // System.out.println(iter.toList().size());
    while (iter2.hasNext()) {
      Resource feature = iter2.next().getObject().asResource();
      quantFeatures.addAll(convertQuantitativeFeatures(feature));
    }

    return offering;
  }
 @Test
 public void testPresentTotalCount() throws URISyntaxException {
   Integer totalResults = new Integer(17);
   Resource thisMetaPage = createMetadata(true, totalResults);
   Literal tr = thisMetaPage.getModel().createTypedLiteral(totalResults);
   assertTrue(thisMetaPage.hasProperty(OpenSearch.totalResults, tr));
 }
Beispiel #20
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  private static boolean hasPermission(
      String userPrefix, String username, String uri, Property[] permissions) {
    Set<Property> permissionSet = new HashSet<Property>();
    Resource resource = configModel.createResource(uri);
    Resource user;

    if (username == null) user = PERM.Public;
    else user = configModel.createResource(userPrefix + username);

    for (Property permission : permissions) {
      if (configModel.contains(user, permission, resource)) return true;
      permissionSet.add(permission);
    }

    StmtIterator stmts = user.listProperties();
    while (stmts.hasNext()) {
      Statement stmt = stmts.next();
      if (!permissionSet.contains(stmt.getPredicate())) continue;
      RDFNode resourceMatch = stmt.getObject();
      if (!(resourceMatch.isResource()
          && configModel.contains((Resource) resourceMatch, RDF.type, PERM.ResourceMatch)))
        continue;

      RDFNode matchRegex = ((Resource) resourceMatch).getProperty(PERM.matchExpression).getObject();
      if (matchRegex == null || !matchRegex.isLiteral()) continue;

      try {
        if (uri.matches(((Literal) matchRegex).getString())) return true;
      } catch (PatternSyntaxException e) {
      }
    }

    if (username != null) return hasPermission(userPrefix, null, uri, permissions);
    else return false;
  }
  private static void extractList(List<String> output, Resource head) {
    if (head.hasProperty(RDF.first))
      output.add(head.getProperty(RDF.first).getObject().asLiteral().getString());

    if (head.hasProperty(RDF.rest))
      extractList(output, head.getProperty(RDF.rest).getObject().asResource());
  }
Beispiel #22
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 public Property getRelationshipProperty(Resource relationship) {
   if (_model.contains(relationship, Vertere.property)) {
     Resource resource = _model.getProperty(relationship, Vertere.property).getResource();
     return ResourceFactory.createProperty(resource.getURI());
   } else {
     return null;
   }
 }
Beispiel #23
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  private static QualitativeFeature convertQualitativeFeature(Resource r, String attributeType) {
    QualitativeFeature qf = new QualitativeFeature();
    qf.setType(QUAL_FEATURE.get(attributeType));
    if (r.hasProperty(comment)) qf.setDescription(r.getProperty(comment).getString());
    if (r.hasProperty(name)) qf.setName(r.getProperty(name).getString());

    return qf;
  }
Beispiel #24
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 /** Adds a random Observable to any Activities that are missing Observables */
 public void fillInObservables() {
   for (Resource r : process.getActivities()) {
     if (process.getObservables(r).size() < 1) {
       String obsUri = String.format("%1$s_OBSERVABLE", r.getURI());
       addObservable(r, createObservable(obsUri));
     }
   }
 }
 public static Resource createFigure(OntModel model, Resource creator, String title) {
   // Anonymous figure node
   Resource figure = model.createResource();
   figure.addProperty(RDF.type, QualiPSoDOC.Figure);
   figure.addProperty(QualiPSoDOC.title, title);
   figure.addProperty(QualiPSoDOC.creator, creator);
   return figure;
 }
  /**
   * Index all the resources in a Jena Model to ES
   *
   * @param model the model to index
   * @param bulkRequest a BulkRequestBuilder
   * @param getPropLabel if set to true all URI property values will be indexed as their label. The
   *     label is taken as the value of one of the properties set in {@link #uriDescriptionList}.
   */
  private void addModelToES(Model model, BulkRequestBuilder bulkRequest, boolean getPropLabel) {
    long startTime = System.currentTimeMillis();
    long bulkLength = 0;
    HashSet<Property> properties = new HashSet<Property>();

    StmtIterator it = model.listStatements();
    while (it.hasNext()) {
      Statement st = it.nextStatement();
      Property prop = st.getPredicate();
      String property = prop.toString();

      if (rdfPropList.isEmpty()
          || (isWhitePropList && rdfPropList.contains(property))
          || (!isWhitePropList && !rdfPropList.contains(property))
          || (normalizeProp.containsKey(property))) {
        properties.add(prop);
      }
    }

    ResIterator resIt = model.listSubjects();

    while (resIt.hasNext()) {
      Resource rs = resIt.nextResource();
      Map<String, ArrayList<String>> jsonMap = getJsonMap(rs, properties, model, getPropLabel);

      bulkRequest.add(
          client.prepareIndex(indexName, typeName, rs.toString()).setSource(mapToString(jsonMap)));
      bulkLength++;

      // We want to execute the bulk for every  DEFAULT_BULK_SIZE requests
      if (bulkLength % EEASettings.DEFAULT_BULK_SIZE == 0) {
        BulkResponse bulkResponse = bulkRequest.execute().actionGet();
        // After executing, flush the BulkRequestBuilder.
        bulkRequest = client.prepareBulk();

        if (bulkResponse.hasFailures()) {
          processBulkResponseFailure(bulkResponse);
        }
      }
    }

    // Execute remaining requests
    if (bulkRequest.numberOfActions() > 0) {
      BulkResponse response = bulkRequest.execute().actionGet();
      // Handle failure by iterating through each bulk response item
      if (response.hasFailures()) {
        processBulkResponseFailure(response);
      }
    }

    // Show time taken to index the documents
    logger.info(
        "Indexed {} documents on {}/{} in {} seconds",
        bulkLength,
        indexName,
        typeName,
        (System.currentTimeMillis() - startTime) / 1000.0);
  }
 @Test
 public void testSave() throws BadRequestException {
   folderResourceMap.save();
   Model model = ModelFactory.createDefaultModel();
   model.read(folderResourceMap.getGraphAsInputStream(RDFFormat.RDFXML), null);
   Resource r = model.getResource(folderResourceMap.getUri().toString());
   Assert.assertTrue(r.hasProperty(ORE.describes, model.getResource(folder.getUri().toString())));
   Assert.assertTrue(r.hasProperty(RDF.type, ORE.ResourceMap));
 }
Beispiel #28
0
 /**
  * Returns the main rdf:type of the given Thing.
  *
  * @param t is thing object
  * @return URI reference of value for rdf:type property
  */
 public static String getClosestRDFType(Thing t) {
   try {
     Class clazz = t.getClass();
     Resource r = (Resource) clazz.getField("TYPE").get(t);
     return r.getURI();
   } catch (Exception e) {
     throw new RuntimeException(e);
   }
 }
Beispiel #29
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 public RDFDatatype getDatatype(Resource attribute) {
   if (_model.contains(attribute, Vertere.datatype)) {
     Resource resource = _model.getProperty(attribute, Vertere.datatype).getResource();
     RDFDatatype datatype = new BaseDatatype(resource.getURI());
     return datatype;
   } else {
     return null;
   }
 }
 /**
  * Create a new RDF folder resource
  *
  * @param model
  * @param uri
  * @param title
  * @param description
  * @param creator
  * @return the new created resource
  */
 public static Resource createFolder(
     OntModel model, String uri, String title, String description, Resource creator) {
   Resource folder = model.createResource(uri);
   folder.addProperty(RDF.type, QualiPSoDOC.Folder);
   folder.addProperty(QualiPSoDOC.title, title);
   folder.addProperty(QualiPSoDOC.description, description);
   folder.addProperty(QualiPSoDOC.creator, creator);
   return folder;
 }