def index_rdf (self, endpoint, query):

		# download (part of) graph from endpoint to temporary rdf file
		rdffilename = download_rdf_from_sparql_endpoint(endpoint=endpoint, query=query)

		parameters=self.config.copy()

		# import the triples of rdf graph by RDF plugin
		enhancer = enhance_rdf()
		enhancer.etl_graph_file(docid=endpoint, filename=rdffilename, parameters=parameters)

		os.remove(rdffilename)
    def index(self, endpoint, query):

        # download (part of) graph from endpoint to temporary rdf file
        rdffilename = download_rdf_from_sparql_endpoint(endpoint=endpoint,
                                                        query=query)

        parameters = self.config.copy()

        # import the triples of rdf graph by RDF plugin
        enhancer = enhance_rdf()
        enhancer.etl_graph_file(docid=endpoint,
                                filename=rdffilename,
                                parameters=parameters)

        os.remove(rdffilename)