public StreamingNQuadsParser(GraphFactory factory, StreamReader reader)
{
this._factory = factory; ;
NTriplesTokeniser tokeniser = new NTriplesTokeniser(reader);
tokeniser.NQuadsMode = true;
this._tokens = new BufferedTokenQueue(tokeniser);
this._tokens.InitialiseBuffer();
}
public StreamingNTriplesParser(IGraph g, StreamReader reader)
{
this._g = g;
NTriplesTokeniser tokeniser = new NTriplesTokeniser(reader);
this._tokens = new BufferedTokenQueue(tokeniser);
this._tokens.InitialiseBuffer();
//Expect a BOF
IToken start = this._tokens.Dequeue();
if (start.TokenType != Token.BOF)
{
throw ParserHelper.Error("Unexpected Token '" + start.GetType().ToString() + "' encountered, expected a Beginning of File Token", start);
}
IToken next = this._tokens.Peek();
if (next.TokenType == Token.EOF) this._eof = true;
}
/// <summary>
/// Loads a RDF Dataset from the NQuads input using a RDF Handler
/// </summary>
/// <param name="handler">RDF Handler to use</param>
/// <param name="parameters">Parameters indicating the Stream to read from</param>
public void Load(IRdfHandler handler, IStoreParams parameters)
{
if (handler == null) throw new ArgumentNullException("handler", "Cannot parse an RDF Dataset using a null RDF Handler");
if (parameters == null) throw new ArgumentNullException("parameters", "Cannot parse an RDF Dataset using null Parameters");
//Try and get the Input from the parameters
TextReader input = null;
if (parameters is StreamParams)
{
//Get Input Stream
input = ((StreamParams)parameters).StreamReader;
#if !SILVERLIGHT
//Issue a Warning if the Encoding of the Stream is not ASCII
if (!((StreamReader)input).CurrentEncoding.Equals(Encoding.ASCII))
{
this.RaiseWarning("Expected Input Stream to be encoded as ASCII but got a Stream encoded as " + ((StreamReader)input).CurrentEncoding.EncodingName + " - Please be aware that parsing errors may occur as a result");
}
#endif
}
else if (parameters is TextReaderParams)
{
input = ((TextReaderParams)parameters).TextReader;
}
if (input != null)
{
try
{
//Setup Token Queue and Tokeniser
NTriplesTokeniser tokeniser = new NTriplesTokeniser(input);
tokeniser.NQuadsMode = true;
TokenQueue tokens = new TokenQueue();
tokens.Tokeniser = tokeniser;
tokens.Tracing = this._tracetokeniser;
tokens.InitialiseBuffer();
//Invoke the Parser
this.Parse(handler, tokens);
}
catch
{
throw;
}
finally
{
try
{
input.Close();
}
catch
{
//No catch actions - just cleaning up
}
}
}
else
{
throw new RdfStorageException("Parameters for the NQuadsParser must be of the type StreamParams/TextReaderParams");
}
}
