Il 17/nov/2015 16:29 "Rocco" <[email protected]> ha scritto:
> I use apache jena fuseki as server sparqlendpoint interface for execute > query sparql on an ontology OWL that is loaded on server apache jena. The > queries are executed through python languages. > > I have need that the results of query must be the consequence of process > the reasoning. > > How I do at configure the reasoner with apache jena fuseki? > > I use library sparqlwrapper for SPARQL Endpoint interface to Python. > > # defines the URI of the endpoint and the query to send > uri = "http://localhost:3030/Hotel/query"; <http://localhost:3030/Hotel/query> > query = ("PREFIX : <http://www.semanticweb.org/ontologies/Hotel.owl#> > <http://www.semanticweb.org/ontologies/Hotel.owl#> " > "SELECT ?hotel ?price WHERE {" > " ?hotel a :Hotel. " > " ?hotel :hasPrice ?price }") > # obtain a connection to the endpoint and sends the query > sparql = SPARQLEndpointInterface(uri) > rs,fields = converter(sparql(query)) > > And this is the define the function sparql: > > def __call__(self, statement): > ''' > This function sends the query to the SPARQL end-point. > > :Parameter: > statement: query in string form to send. > > :Returns: > resultset: the result-set list in JSON format. > > ''' > resultset = [] > self._sparql.setQuery(statement) > self._sparql.setReturnFormat(JSON) > print("SPARQLInterface is executing the query...") > try: > t0 = time() > rs = self._sparql.query() > tf = time() > resultset = rs.convert() > print("Query has been executed successfully!\nTime elapsed: {0:.3f} > seconds.".format(tf-t0)) > except: > raise Exception("") > self._sparql.resetQuery() > return resultset > >
