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

The following examples show how to use com.hp.hpl.jena.query.QueryExecution#execConstruct() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: ModelImplJena.java From semweb4j with BSD 2-Clause "Simplified" License

6 votes

@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.");
	}
}

Example 2

Source File: ModelSetImplJena.java From semweb4j with BSD 2-Clause "Simplified" License

6 votes

@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.");
	}
}

Example 3

Source File: ModelSetImplJena.java From semweb4j with BSD 2-Clause "Simplified" License

6 votes

@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.");
	}

}

Example 4

Source File: SerializationService.java From semanticMDR with GNU General Public License v3.0

5 votes

@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();
}

Example 5

Source File: ContextService.java From semanticMDR with GNU General Public License v3.0

5 votes

@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();
}

Example 6

Source File: ContextService.java From semanticMDR with GNU General Public License v3.0

5 votes

@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();
}

Example 7

Source File: SerializationService.java From semanticMDR with GNU General Public License v3.0

4 votes

/**
 * 
 * @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();
}