public void ProcessRequest(HttpContext context)
{
//Turn on Response Buffering
context.Response.Buffer = true;
//Prepare the Cache Directories
if (!Path.IsPathRooted(this._cacheDir))
{
this._cacheDir = context.Server.MapPath(this._cacheDir);
}
if (this._loader == null)
{
this._loader = new ExpansionLoader(this._cacheDir);
}
//Add our Custom Headers
try
{
context.Response.Headers.Add("X-dotNetRDF-Version", Assembly.GetAssembly(typeof(VDS.RDF.IGraph)).GetName().Version.ToString());
}
catch (PlatformNotSupportedException)
{
context.Response.AddHeader("X-dotNetRDF-Version", Assembly.GetAssembly(typeof(VDS.RDF.IGraph)).GetName().Version.ToString());
}
try
{
//Retrieve the desired URI and Profile URI from Querystring parameters
String uri = context.Request.QueryString["uri"];
String profile = context.Request.QueryString["profile"];
if (uri == null)
{
if (context.Request.Url.Query.Equals(String.Empty))
{
throw new ArgumentNullException("uri", "Required uri parameter used to designate the URI you wish to expand was not found. Your request must use a URI of the form " + context.Request.Url.ToString() + "?uri=" + Uri.EscapeDataString("http://example.org"));
}
else
{
throw new ArgumentNullException("uri", "Required uri parameter used to designate the URI you wish to expand was not found. Your request must use a URI of the form " + context.Request.Url.ToString().Replace(context.Request.Url.Query, String.Empty) + "?uri=" + Uri.EscapeDataString("http://example.org"));
}
}
//Note that the ExpansionLoader class automatically handles all the Caching for us
IInMemoryQueryableStore store;
String uriHash = new Uri(uri).GetSha256Hash();
if (profile == null)
{
//Use Default Profile
store = this._loader.Load(new Uri(uri));
}
else
{
//Use Custom Profile
store = this._loader.Load(new Uri(uri), new Uri(profile));
}
String ctype;
IStoreWriter writer = MimeTypesHelper.GetStoreWriter(context.Request.AcceptTypes, out ctype);
context.Response.ContentType = ctype;
writer.Save(store, new StreamParams(context.Response.OutputStream));
}
catch (ArgumentNullException argNull)
{
HandleErrors(context, "Missing Argument", argNull);
}
catch (RdfParseException parseEx)
{
HandleErrors(context, "RDF Parser Error", parseEx);
}
catch (RdfException rdfEx)
{
HandleErrors(context, "RDF Error", rdfEx);
}
catch (Exception ex)
{
HandleErrors(context, "Error", ex);
}
}
public void ProcessRequest(HttpContext context)
{
//Turn on Response Buffering
context.Response.Buffer = true;
//Prepare the Cache Directories
if (!Path.IsPathRooted(this._cacheDir))
{
this._cacheDir = context.Server.MapPath(this._cacheDir);
}
if (this._loader == null) this._loader = new ExpansionLoader(this._cacheDir);
//Add our Custom Headers
try
{
context.Response.Headers.Add("X-dotNetRDF-Version", Assembly.GetAssembly(typeof(VDS.RDF.IGraph)).GetName().Version.ToString());
}
catch (PlatformNotSupportedException)
{
context.Response.AddHeader("X-dotNetRDF-Version", Assembly.GetAssembly(typeof(VDS.RDF.IGraph)).GetName().Version.ToString());
}
try
{
//Retrieve the desired URI and Profile URI from Querystring parameters
String uri = context.Request.QueryString["uri"];
String profile = context.Request.QueryString["profile"];
if (uri == null)
{
if (context.Request.Url.Query.Equals(String.Empty))
{
throw new ArgumentNullException("uri", "Required uri parameter used to designate the URI you wish to expand was not found. Your request must use a URI of the form " + context.Request.Url.ToString() + "?uri=" + Uri.EscapeDataString("http://example.org"));
}
else
{
throw new ArgumentNullException("uri", "Required uri parameter used to designate the URI you wish to expand was not found. Your request must use a URI of the form " + context.Request.Url.ToString().Replace(context.Request.Url.Query, String.Empty) + "?uri=" + Uri.EscapeDataString("http://example.org"));
}
}
//Note that the ExpansionLoader class automatically handles all the Caching for us
IInMemoryQueryableStore store;
String uriHash = new Uri(uri).GetSha256Hash();
if (profile == null)
{
//Use Default Profile
store = this._loader.Load(new Uri(uri));
}
else
{
//Use Custom Profile
store = this._loader.Load(new Uri(uri), new Uri(profile));
}
String ctype;
IStoreWriter writer = MimeTypesHelper.GetStoreWriter(context.Request.AcceptTypes, out ctype);
context.Response.ContentType = ctype;
writer.Save(store, new StreamParams(context.Response.OutputStream));
}
catch (ArgumentNullException argNull)
{
HandleErrors(context, "Missing Argument", argNull);
}
catch (RdfParseException parseEx)
{
HandleErrors(context, "RDF Parser Error", parseEx);
}
catch (RdfException rdfEx)
{
HandleErrors(context, "RDF Error", rdfEx);
}
catch (Exception ex)
{
HandleErrors(context, "Error", ex);
}
}
