private void processGraph(Graph g)
{
SparqlResultSet results = SparqlExecutor.PerformQuery("SELECT ?s ?o WHERE { ?s ldp:contains ?o }", g);
foreach (var r in results.Results)
{
graph.AddExternalContainer(r.Value("s").ToString());
graph.AddExternalEntity(r.Value("o").ToString());
}
}
private void processReceivedGraph(Graph g)
{
SparqlResultSet results = SparqlExecutor.PerformQuery("SELECT DISTINCT ?s ?o WHERE { ?s dct:hasPart ?o }", g);
foreach (SparqlResult r in results)
{
if (!r.Value("s").ToString().Equals(Route))
{
continue;
}
graph.AddAttributeTriple(r.Value("o").ToString());
}
}
protected void onSparql(HttpEventArgs e)
{
string query = e.request.QueryString.Get("query");
StreamWriter w = new StreamWriter(e.response.OutputStream);
try
{
var result = SparqlExecutor.PerformQuery(query, completeGraph.RDFGraph);
e.response.ContentType = "application/json";
e.response.StatusCode = 200;
w.Write(JsonConvert.SerializeObject(result));
}
catch (Exception ex)
{
string errorMessage = "Provided query produced an error: " + ex.Message;
e.response.StatusCode = 400;
w.Write(errorMessage);
}
w.Flush();
e.response.OutputStream.Close();
}
