public void ProcessRequest(HttpContext context)
{
String uri = context.Request.QueryString["uri"];
if (uri == null)
{
context.Response.Write("Bad request");
}
else
{
//Load the Graph from that URI
Graph g = new Graph();
try
{
UriLoader.Load(g, new Uri(uri));
}
catch (Exception)
{
//Supress the exception
//TODO: Show an error message to the end user
}
//Write out as a HTML page
HtmlWriter writer = new HtmlWriter();
writer.Stylesheet = "../sparql.css";
writer.UriPrefix = "?uri=";
context.Response.ContentType = "text/html";
writer.Save(g, context.Response.Output);
}
}
public void WritingHtmlWriter()
{
Graph g = new Graph();
FileLoader.Load(g, "InferenceTest.ttl");
HtmlWriter writer = new HtmlWriter();
String data = StringWriter.Write(g, writer);
Console.WriteLine("Serialized as XHTML+RDFa");
Console.WriteLine(data);
Console.WriteLine();
Graph h = new Graph();
h.BaseUri = new Uri("http://example.org");
StringParser.Parse(h, data, new RdfAParser());
Console.WriteLine("Extracted Triples");
foreach (Triple t in h.Triples)
{
Console.WriteLine(t.ToString());
}
Assert.AreEqual(g, h, "Graphs should have been the same");
}
private void cboGraphFormat_SelectedIndexChanged(object sender, EventArgs e)
{
switch (this.cboGraphFormat.SelectedIndex)
{
case 0:
this._rdfwriter = new CsvWriter();
this._rdfext = ".csv";
break;
case 1:
fclsStylesheetPicker stylesheetPicker = new fclsStylesheetPicker("CSS (Optional)");
if (stylesheetPicker.ShowDialog() == DialogResult.OK)
{
HtmlWriter temp = new HtmlWriter();
temp.Stylesheet = stylesheetPicker.StylesheetUri;
this._rdfwriter = temp;
}
else
{
this._rdfwriter = new HtmlWriter();
}
this._rdfext = ".html";
break;
case 2:
this._rdfwriter = new Notation3Writer();
this._rdfext = ".n3";
break;
case 3:
this._rdfwriter = new NTriplesWriter();
this._rdfext = ".nt";
break;
case 4:
this._rdfwriter = new RdfJsonWriter();
this._rdfext = ".json";
break;
case 5:
this._rdfwriter = new RdfXmlWriter();
this._rdfext = ".rdf";
break;
case 6:
this._rdfwriter = new CompressingTurtleWriter();
this._rdfext = ".ttl";
break;
case 7:
this._rdfwriter = new TsvWriter();
this._rdfext = ".tsv";
break;
}
if (this._rdfwriter is ICompressingWriter)
{
((ICompressingWriter)this._rdfwriter).CompressionLevel = WriterCompressionLevel.High;
}
if (this.cboResultsFormat.SelectedIndex == 1)
{
this._resultswriter = new SparqlRdfWriter(this._rdfwriter);
this._resultsext = this._rdfext;
}
}
