/**
* 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;
}
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();
}
/**
* Answer the lowest common ancestor of two classes in a given ontology. This is the class that is
* farthest from the root concept (defaulting to <code>owl:Thing</code> which is a super-class of
* both <code>u</code> and <code>v</code>. The algorithm is based on <a
* href="http://en.wikipedia.org/wiki/Tarjan's_off-line_least_common_ancestors_algorithm">Tarjan's
* off-line LCA</a>. The current implementation expects that the given model:
*
* <ul>
* <li>is transitively closed over the <code>subClassOf</code> relation
* <li>can cheaply determine <em>direct sub-class</em> relations
* </ul>
*
* <p>Both of these conditions are true of the built-in Jena OWL reasoners, such as {@link
* OntModelSpec#OWL_MEM_MICRO_RULE_INF}, and external DL reasoners such as Pellet.
*
* @param m The ontology model being queried to find the LCA, which should conform to the reasoner
* capabilities described above
* @param u An ontology class
* @param v An ontology class
* @return The LCA of <code>u</code> and <code>v</code>
* @exception JenaException if the language profile of the given model does not define a top
* concept (e.g. <code>owl:Thing</code>)
*/
public static OntClass getLCA(OntModel m, OntClass u, OntClass v) {
Resource root = m.getProfile().THING();
if (root == null) {
throw new JenaException(
"The given OntModel has a language profile that does not define a generic root class (such as owl:Thing)");
}
root = root.inModel(m);
return getLCA(m, root.as(OntClass.class), u, v);
}
/** @see com.hp.hpl.jena.rdf.model.RDFNode#inModel(com.hp.hpl.jena.rdf.model.Model) */
public RDFNode inModel(Model m) {
return wrapped.inModel(m);
}
