public void Select(Statement template, StatementSink sink)
{
// extract the fields for easy access
Entity subj = template.Subject;
Entity pred = template.Predicate;
Resource obj = template.Object;
// convert the SemWeb fields to the RDFQuery fields
Uri s;
string p, o;
rdf_to_beagle_hook(subj, pred, obj, out s, out p, out o);
RDFQuery query = new RDFQuery(s, p, o);
RDFQueryResult result = (RDFQueryResult)query.Send();
foreach (Hit hit in result.Hits)
{
Entity subject = new Entity(hit.Uri.ToString()); //FIXME: Do we have to use strings here?
foreach (Property prop in hit.Properties)
{
Entity predicate = BeaglePropertyToEntity(prop.Type, prop.Key);
Resource _object;
property_to_rdf_hook(prop, out _object);
// now create a the statement and add it to the result
Statement st = new Statement(subject, predicate, _object);
sink.Add(st);
}
}
}
public override ResponseMessage Execute(RequestMessage request)
{
RDFQueryResult result = new RDFQueryResult();
RDFQuery query = request as RDFQuery;
if (query == null)
{
return(new ErrorResponse("Only RDF query please!"));
}
result.Hits = QueryDriver.DoRDFQuery(query);
return(result);
}
public override ResponseMessage Execute (RequestMessage request)
{
RDFQueryResult result = new RDFQueryResult ();
RDFQuery query = request as RDFQuery;
if (query == null)
return new ErrorResponse ("Only RDF query please!");
result.Hits = QueryDriver.DoRDFQuery (query);
return result;
}