private void ParsingUsingWriteThroughHandler(Type formatterType)
{
if (!System.IO.File.Exists("temp.ttl"))
{
Graph g = new Graph();
EmbeddedResourceLoader.Load(g, "VDS.RDF.Configuration.configuration.ttl");
g.SaveToFile("temp.ttl");
}
WriteThroughHandler handler = new WriteThroughHandler(formatterType, Console.Out, false);
TurtleParser parser = new TurtleParser();
parser.Load(handler, "temp.ttl");
}
private void ParsingUsingWriteThroughHandler(Type formatterType)
{
if (!System.IO.File.Exists("write_through_handler_tests_temp.ttl"))
{
Graph g = new Graph();
EmbeddedResourceLoader.Load(g, "VDS.RDF.Configuration.configuration.ttl");
g.SaveToFile("write_through_handler_tests_temp.ttl");
}
WriteThroughHandler handler = new WriteThroughHandler(formatterType, Console.Out, false);
TurtleParser parser = new TurtleParser();
parser.Load(handler, "write_through_handler_tests_temp.ttl");
}
public IRdfHandler ToCache(Uri requestUri, Uri responseUri, String etag)
{
IRdfHandler handler = null;
try
{
bool cacheTwice = !requestUri.ToString().Equals(responseUri.ToString(), StringComparison.OrdinalIgnoreCase);
//Cache the ETag if present
if (this._canCacheETag && etag != null && !etag.Equals(String.Empty))
{
int id = requestUri.GetEnhancedHashCode();
bool requireAdd = false;
if (this._etags.ContainsKey(id))
{
if (!this._etags[id].Equals(etag))
{
//If the ETag has changed remove it and then re-add it
this.RemoveETag(requestUri);
requireAdd = true;
}
}
else
{
requireAdd = true;
}
if (requireAdd)
{
//Add a New ETag
this._etags.Add(id, etag);
using (StreamWriter writer = new StreamWriter(this._etagFile, true, Encoding.UTF8))
{
writer.WriteLine(id + "\t" + etag);
writer.Close();
}
}
//Cache under the Response URI as well if applicable
if (cacheTwice)
{
id = responseUri.GetEnhancedHashCode();
requireAdd = false;
if (this._etags.ContainsKey(id))
{
if (!this._etags[id].Equals(etag))
{
//If the ETag has changed remove it and then re-add it
this.RemoveETag(responseUri);
requireAdd = true;
}
}
else
{
requireAdd = true;
}
if (requireAdd)
{
using (StreamWriter writer = new StreamWriter(this._etagFile, true, Encoding.UTF8))
{
writer.WriteLine(id + "\t" + etag);
writer.Close();
}
}
}
}
//Then if we are caching Graphs return WriteThroughHandlers to do the caching for us
if (this._canCacheGraphs)
{
String graph = Path.Combine(this._graphDir, requestUri.GetSha256Hash());
handler = new WriteThroughHandler(this._formatterType, new StreamWriter(graph), true);
if (cacheTwice)
{
graph = Path.Combine(this._graphDir, responseUri.GetSha256Hash());
handler = new MultiHandler(new IRdfHandler[] { handler, new WriteThroughHandler(this._formatterType, new StreamWriter(graph), true) });
}
}
}
catch (IOException)
{
//Ignore - if we get an IO Exception we failed to cache somehow
}
catch (RdfOutputException)
{
//Ignore - if we get an RDF Output Exception then we failed to cache
}
return handler;
}
protected override void StartRdfInternal()
{
_handler = new WriteThroughHandler(_formatterType, new StringWriter(_buffer));
_handler.StartRdf();
}
private void LocalImportContinuation(MessageBoxResult dialogResult = MessageBoxResult.Yes)
{
try
{
if (dialogResult == MessageBoxResult.Yes)
{
var ext = MimeTypesHelper.GetTrueFileExtension(_importFileName);
bool isGZipped = ext.EndsWith(MimeTypesHelper.DefaultGZipExtension);
string lines;
var fileTypeDefinition =
MimeTypesHelper.GetDefinitionsByFileExtension(ext).FirstOrDefault(d => d.CanParseRdf);
var rdfReader = fileTypeDefinition == null ? null : fileTypeDefinition.GetRdfParser();
if (rdfReader == null || rdfReader is NTriplesParser || rdfReader is NQuadsParser)
{
// We can't determine the file type, or it is NQuads or NTriples
if (isGZipped)
{
using (var fileStream = new FileStream(_importFileName, FileMode.Open))
{
var gZipStream = new GZipStream(fileStream, CompressionMode.Decompress);
var reader = new StreamReader(gZipStream);
lines = reader.ReadToEnd();
}
}
else
{
lines = File.ReadAllText(_importFileName);
}
}
else
{
using (var textWriter = new StringWriter())
{
try
{
var nQuadsFormatter = new NQuadsFormatter();
var writeThroughHandler = new WriteThroughHandler(nQuadsFormatter, textWriter);
rdfReader.Load(writeThroughHandler, _importFileName);
lines = textWriter.ToString();
}
catch (Exception ex)
{
Messenger.Default.Send(new ShowDialogMessage(
Strings.ParseErrorTitle,
String.Format(Strings.ParseErrorDescription, _importFileName,
ex.Message),
MessageBoxImage.Error,
MessageBoxButton.OK),
"MainWindow");
return;
}
}
}
var client = BrightstarService.GetClient(Store.Source.ConnectionString);
_transactionJob = client.ExecuteTransaction(Store.Location, String.Empty, String.Empty, lines, waitForCompletion:false);
_dispatcher.BeginInvoke(DispatcherPriority.SystemIdle,
new TransactionViewModel.JobMonitorDelegate(CheckJobStatus));
}
}
catch (OutOfMemoryException)
{
Messenger.Default.Send(new ShowDialogMessage(Strings.ParseErrorTitle,
Strings.ImportFileTooLarge,
MessageBoxImage.Error,
MessageBoxButton.OK), "MainWindow");
}
}
protected override void StartRdfInternal()
{
this._handler = new WriteThroughHandler(this._formatterType, new StreamWriter(this._file, false, this._encoding));
this._handler.StartRdf();
}