Java Code Examples for com.hp.hpl.jena.query.QueryExecution#execConstruct()

@Override
public ClosableIterable<Statement> sparqlConstruct(String queryString)
        throws ModelRuntimeException {
	assertModel();
	Query query = QueryFactory.create(queryString);
	QueryExecution qexec = QueryExecutionFactory.create(query, this.jenaModel);
	
	if(query.isConstructType()) {
		com.hp.hpl.jena.rdf.model.Model m = qexec.execConstruct();
		Model resultModel = new ModelImplJena(null, m, Reasoning.none);
		resultModel.open();
		return resultModel;
	} else {
		throw new RuntimeException("Cannot handle this type of queries! Please use CONSTRUCT.");
	}
}
 

@Override
public ClosableIterable<Statement> queryConstruct(String query,
		String querylanguage) throws QueryLanguageNotSupportedException,
		MalformedQueryException, ModelRuntimeException {

	Query jenaQuery = QueryFactory.create(query);
	QueryExecution qexec = QueryExecutionFactory.create(jenaQuery,
			this.dataset);

	if (jenaQuery.isConstructType()) {
		com.hp.hpl.jena.rdf.model.Model m = qexec.execConstruct();
		Model resultModel = new ModelImplJena(null, m, Reasoning.none);
		resultModel.open();
		return resultModel;
	} else {
		throw new RuntimeException(
				"Cannot handle this type of query! Please use CONSTRUCT.");
	}
}
 

@Override
public ClosableIterable<Statement> sparqlConstruct(String query)
		throws ModelRuntimeException, MalformedQueryException {
	Query jenaQuery = QueryFactory.create(query);
	QueryExecution qexec = QueryExecutionFactory.create(jenaQuery,
			this.dataset);

	if (jenaQuery.isConstructType()) {
		com.hp.hpl.jena.rdf.model.Model m = qexec.execConstruct();
		Model resultModel = new ModelImplJena(null, m, Reasoning.none);
		resultModel.open();
		return resultModel;
	} else {
		throw new RuntimeException(
				"Cannot handle this type of query! Please use CONSTRUCT.");
	}

}
 

@GET
@Path("/dex")
@Produces({ WebUtil.MEDIA_TYPE_APPLICATION_NTRIPLE,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFJSON,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFXML, MediaType.TEXT_PLAIN,
		WebUtil.MEDIA_TYPE_TEXT_N3, WebUtil.MEDIA_TYPE_TEXT_TURTLE })
public Response dexSerialization(@QueryParam("id") String uuid,
		@Context Request request) {

	Variant variant = request.selectVariant(WebUtil.VARIANTS);
	MediaType mediaType = variant.getMediaType();

	Repository repository = RepositoryManager.getInstance().getRepository();
	OntModel ontModel = repository.getMDRDatabase().getOntModel();
	String queryString;

	File file = new File(
			"../web/src/main/resources/rest/dex-serialization-query.rq");
	try {
		queryString = FileUtils.readFileToString(file);
	} catch (IOException e) {
		logger.error("File with dex serialization query could not be found ");
		return Response.serverError().build();
	}

	ParameterizedSparqlString query = new ParameterizedSparqlString(
			queryString);
	query.setLiteral("uuid", ResourceFactory.createTypedLiteral(uuid));
	QueryExecution qe = QueryExecutionFactory.create(query.asQuery(),
			ontModel);
	Model resultModel = qe.execConstruct();

	graphStream.setModel(resultModel);
	graphStream.setLanguage(WebUtil.getSerializationLanguage(mediaType
			.toString()));

	return Response.ok(graphStream).build();
}
 

@GET
@Path("/all")
@Produces({ WebUtil.MEDIA_TYPE_APPLICATION_NTRIPLE,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFJSON,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFXML, MediaType.TEXT_PLAIN,
		WebUtil.MEDIA_TYPE_TEXT_N3, WebUtil.MEDIA_TYPE_TEXT_TURTLE })
public Response getAllContexts(@Context Request request) {

	Variant variant = request.selectVariant(WebUtil.VARIANTS);
	MediaType mediaType = variant.getMediaType();

	Repository repository = RepositoryManager.getInstance().getRepository();
	OntModel ontModel = repository.getMDRDatabase().getOntModel();

	String queryString;
	File file = new File(QUERY_FILE_GET_ALL_CONTEXTS);
	try {
		queryString = FileUtils.readFileToString(file);
	} catch (IOException e) {
		logger.error("File with context serialization query could not be found ");
		return Response.serverError().build();
	}

	ParameterizedSparqlString query = new ParameterizedSparqlString(
			queryString);
	QueryExecution qe = QueryExecutionFactory.create(query.asQuery(),
			ontModel);
	Model resultModel = qe.execConstruct();

	graphStream.setModel(resultModel);
	graphStream.setLanguage(WebUtil.getSerializationLanguage(mediaType
			.toString()));

	return Response.ok(graphStream).build();
}
 

@GET
@Path("/{contextid}/de")
@Produces({ WebUtil.MEDIA_TYPE_APPLICATION_NTRIPLE,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFJSON,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFXML, MediaType.TEXT_PLAIN,
		WebUtil.MEDIA_TYPE_TEXT_N3, WebUtil.MEDIA_TYPE_TEXT_TURTLE })
public Response getDataElements(@PathParam("contextid") String contextId,
		@Context Request request) {

	Variant variant = request.selectVariant(WebUtil.VARIANTS);
	MediaType mediaType = variant.getMediaType();

	Repository repository = RepositoryManager.getInstance().getRepository();
	OntModel ontModel = repository.getMDRDatabase().getOntModel();

	String queryString;
	File file = new File(QUERY_FILE_GET_ALL_FROM_CONTEXT);
	try {
		queryString = FileUtils.readFileToString(file);
	} catch (IOException e) {
		logger.error("File with context serialization query could not be found ");
		return Response.serverError().build();
	}

	ParameterizedSparqlString query = new ParameterizedSparqlString(
			queryString);
	query.setLiteral("uuid", ResourceFactory.createTypedLiteral(contextId));
	QueryExecution qe = QueryExecutionFactory.create(query.asQuery(),
			ontModel);
	Model resultModel = qe.execConstruct();

	graphStream.setModel(resultModel);
	graphStream.setLanguage(WebUtil.getSerializationLanguage(mediaType
			.toString()));

	return Response.ok(graphStream).build();
}
 

/**
 * 
 * @param type
 *            outputFormat "N3", "N-TRIPLE", "RDF/XML-ABBREV" or
 *            "TURTLE"default: "RDF/XML".
 * @param uuid
 * @return
 */
@GET
@Path("/graph")
@Produces({ WebUtil.MEDIA_TYPE_APPLICATION_NTRIPLE,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFJSON,
		WebUtil.MEDIA_TYPE_APPLICATION_RDFXML, MediaType.TEXT_PLAIN,
		WebUtil.MEDIA_TYPE_TEXT_N3, WebUtil.MEDIA_TYPE_TEXT_TURTLE })
public Response serialize(@QueryParam("id") String uuid, @QueryParam("uri") String uri,
		@Context Request request) {

	Variant variant = request.selectVariant(WebUtil.VARIANTS);
	MediaType mediaType = variant.getMediaType();

	Repository repository = RepositoryManager.getInstance().getRepository();
	OntModel ontModel = repository.getMDRDatabase().getOntModel();
	
	String query = "";
	if(uuid != null) {
		// get the uri of the resource
		query = "prefix mdr:     <http://www.salusproject.eu/iso11179-3/mdr#> "
				+ "prefix xsd:     <http://www.w3.org/2001/XMLSchema#> "
				+ "SELECT ?resource WHERE { " + "?resource ?op ?ar . "
				+ "?ar mdr:administeredItemIdentifier ?ii . "
				+ "?ii mdr:dataIdentifier \"" + uuid + "\"^^xsd:string. " + "}";

		logger.debug("Query execution: {}", query);
		Query q = QueryFactory.create(query);
		QueryExecution qe = QueryExecutionFactory.create(q, ontModel);
		ResultSet rs = qe.execSelect();

		while (rs.hasNext()) {
			QuerySolution qs = rs.next();
			uri = qs.getResource("resource").getURI();
		}
	}

	if(uri == null) {
		throw new WebApplicationException(Response.Status.BAD_REQUEST);
	}
	
	// use the uri to construct the model and return its serialization.
	query = "CONSTRUCT WHERE { <" + uri + "> ?p ?o .}";
	Query q2 = QueryFactory.create(query);
	QueryExecution qe2 = QueryExecutionFactory.create(q2, ontModel);
	Model outModel = qe2.execConstruct();

	graphStream.setModel(outModel);
	graphStream.setLanguage(WebUtil.getSerializationLanguage(mediaType
			.toString()));

	return Response.ok(graphStream).build();
}