Java Code Examples for com.hp.hpl.jena.rdf.model.Model#setNsPrefixes()

public String buildRDFResource(String IRI, String sparql, Lang lang, ConfigurationBean conf) throws Exception {
	String result = "empty content";
	Model model = ModelFactory.createDefaultModel();
	model.setNsPrefixes(conf.getPrefixes());

	SPARQLEndPoint se = new SPARQLEndPoint(conf, null, null);
	model = se.extractData(model, IRI, sparql, conf.getDefaultRawDataQueries());

	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	RDFWriter rdfWriter = model.getWriter(lang.getName());
	rdfWriter.setProperty("showXMLDeclaration","true");
	rdfWriter.setProperty("relativeURIs","");

	rdfWriter.write(model, baos, conf.getIRInamespace());

	byte[] resultByteArray = baos.toByteArray();
	result = new String(resultByteArray);

	return result;
}
 

public String buildRDFResource(String IRI, Model m, Lang lang, ConfigurationBean conf) throws Exception {
	String result = "empty content";
	Model model = ModelFactory.createDefaultModel();
	model.setNsPrefixes(conf.getPrefixes());

	SPARQLEndPoint se = new SPARQLEndPoint(conf, null, null);
	model = se.extractLocalData(model, IRI, m, conf.getDefaultRawDataQueries());

	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	RDFWriter rdfWriter = model.getWriter(lang.getName());
	rdfWriter.setProperty("showXMLDeclaration","true");
	rdfWriter.setProperty("relativeURIs","");

	rdfWriter.write(model, baos, conf.getIRInamespace());
	rdfWriter.setProperty("showXMLDeclaration","true");
	rdfWriter.setProperty("relativeURIs","");

	byte[] resultByteArray = baos.toByteArray();
	result = new String(resultByteArray);

	return result;
}
 

public Model getInventoryModel(int limit) {
	log.info("Listing entity set: " + entityMaker);
	Model result = ModelFactory.createDefaultModel();
	result.setNsPrefixes(mapping.getPrefixes());
	GeneralFindQuery query = new GeneralFindQuery(Triple.ANY, inventory, limit, 
			new ExecutionContext(mapping.getContext(), null, null, null));
	Iterator<Triple> it = TripleQueryIter.create(query.iterator());
	while (it.hasNext()) {
		result.getGraph().add(it.next());
	}
	return result;
}
 

public Model getInventoryModel(int limit) {
	log.info("Listing entity set: " + entityMaker);
	Model result = ModelFactory.createDefaultModel();
	result.setNsPrefixes(mapping.getPrefixes());
	FindQuery query = new FindQuery(Triple.ANY, inventory, limit, 
			new ExecutionContext(mapping.getContext(), null, null, null));
	Iterator<Triple> it = TripleQueryIter.create(query.iterator());
	while (it.hasNext()) {
		result.getGraph().add(it.next());
	}
	return result;
}
 

protected void doGet(HttpServletRequest request,
		HttpServletResponse response) throws IOException, ServletException {
	D2RServer server = D2RServer.fromServletContext(getServletContext());
	server.checkMappingFileChanged();
	String relativeResourceURI = request.getRequestURI().substring(
			request.getContextPath().length()
					+ request.getServletPath().length());
	// Some servlet containers keep the leading slash, some don't
	if (!"".equals(relativeResourceURI)
			&& "/".equals(relativeResourceURI.substring(0, 1))) {
		relativeResourceURI = relativeResourceURI.substring(1);
	}
	if (request.getQueryString() != null) {
		relativeResourceURI = relativeResourceURI + "?"
				+ request.getQueryString();
	}

	/* Determine service stem, i.e. vocab/ in /[vocab/]data */
	int servicePos;
	if (-1 == (servicePos = request.getServletPath().indexOf(
			"/" + D2RServer.getDataServiceName())))
		throw new ServletException("Expected to find service path /"
				+ D2RServer.getDataServiceName());
	String serviceStem = request.getServletPath().substring(1,
			servicePos + 1);

	String resourceURI = RequestParamHandler
			.removeOutputRequestParam(server.resourceBaseURI(serviceStem)
					+ relativeResourceURI);
	String documentURL = server.dataURL(serviceStem, relativeResourceURI);

	String pageURL = server.pageURL(serviceStem, relativeResourceURI);

	String sparqlQuery = "DESCRIBE <" + resourceURI + ">";
	QueryExecution qe = QueryExecutionFactory.create(sparqlQuery,
			server.dataset());
	if (server.getConfig().getPageTimeout() > 0) {
		qe.setTimeout(Math.round(server.getConfig().getPageTimeout() * 1000));
	}
	Model description = qe.execDescribe();
	qe.close();
	
	if (description.size() == 0) {
		response.sendError(404);
	}
	if (description.qnameFor(FOAF.primaryTopic.getURI()) == null
			&& description.getNsPrefixURI("foaf") == null) {
		description.setNsPrefix("foaf", FOAF.NS);
	}
	Resource resource = description.getResource(resourceURI);

	Resource document = description.getResource(documentURL);
	document.addProperty(FOAF.primaryTopic, resource);

	Statement label = resource.getProperty(RDFS.label);
	if (label != null) {
		document.addProperty(RDFS.label,
				"RDF Description of " + label.getString());
	}
	server.addDocumentMetadata(description, document);
	if (server.getConfig().serveMetadata()) {
		// add document metadata from template
		Model resourceMetadataTemplate = server.getConfig().getResourceMetadataTemplate(
				server, getServletContext());
		MetadataCreator resourceMetadataCreator = new MetadataCreator(
				server, resourceMetadataTemplate);
		description.add(resourceMetadataCreator.addMetadataFromTemplate(
				resourceURI, documentURL, pageURL));
		
		Map<String, String> descPrefixes = description.getNsPrefixMap();
		descPrefixes.putAll(resourceMetadataTemplate.getNsPrefixMap());
		description.setNsPrefixes(descPrefixes);
	}
	// TODO: Add a Content-Location header
	new ModelResponse(description, request, response).serve();
}