public object Search(queryrequest xml)
{
SemWeb.Query.Query query = null;
string q = string.Empty;
try
{
query = new SparqlEngine(new StringReader(xml.query));
}
catch (QueryFormatException ex)
{
var malformed = new malformedquery();
malformed.faultdetails = ex.Message;
return(malformed);
}
// Load the data from sql server
SemWeb.Stores.SQLStore store;
string connstr = ConfigurationManager.ConnectionStrings["SemWebDB"].ConnectionString;
DebugLogging.Log(connstr);
store = (SemWeb.Stores.SQLStore)SemWeb.Store.CreateForInput(connstr);
//Create a Sink for the results to be writen once the query is run.
MemoryStream ms = new MemoryStream();
XmlTextWriter writer = new XmlTextWriter(ms, System.Text.Encoding.UTF8);
QueryResultSink sink = new SparqlXmlQuerySink(writer);
try
{
// Run the query.
query.Run(store, sink);
}
catch (Exception ex)
{
// Run the query.
query.Run(store, sink);
DebugLogging.Log("Run the query a second time");
DebugLogging.Log(ex.Message);
}
//flush the writer then load the memory stream
writer.Flush();
ms.Seek(0, SeekOrigin.Begin);
//Write the memory stream out to the response.
ASCIIEncoding ascii = new ASCIIEncoding();
DebugLogging.Log(ascii.GetString(ms.ToArray()).Replace("???", ""));
writer.Close();
DebugLogging.Log("End of Processing");
return(SerializeXML.DeserializeObject(ascii.GetString(ms.ToArray()).Replace("???", ""), typeof(sparql)) as sparql);
}
protected virtual void RunQuery(Query query, SelectableSource source, TextWriter output) {
if (System.Web.HttpContext.Current != null
&& System.Web.HttpContext.Current.Request["outputMimeType"] != null
&& System.Web.HttpContext.Current.Request["outputMimeType"] == "text/html") {
query.Run(source, new HTMLQuerySink(output));
return;
}
query.Run(source, output);
}
protected virtual void RunQuery(Query query, SelectableSource source, TextWriter output)
{
query.Run(source, output);
}
