/// <summary>
/// Creates a new Base Parser Context
/// </summary>
/// <param name="handler">RDF Handler</param>
/// <param name="traceParsing">Whether to trace parsing</param>
public BaseParserContext(IRdfHandler handler, bool traceParsing)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
_handler = handler;
_traceParsing = traceParsing;
_baseUri = _handler.GetBaseUri();
}
/// <summary>
/// Gets the Base URI from the RDF Handler.
/// </summary>
/// <param name="handler">RDF Handler.</param>
/// <returns></returns>
internal static Uri GetBaseUri(this IRdfHandler handler)
{
if (handler is GraphHandler)
{
return(((GraphHandler)handler).BaseUri);
}
else if (handler is IWrappingRdfHandler)
{
IRdfHandler temp = ((IWrappingRdfHandler)handler).InnerHandlers.FirstOrDefault(h => h.GetBaseUri() != null);
if (temp == null)
{
return(null);
}
else
{
return(temp.GetBaseUri());
}
}
else
{
return(null);
}
}
/// <summary>
/// Creates a new Parser Context which uses Streaming parsing.
/// </summary>
/// <param name="handler">RDF Handler.</param>
/// <param name="input">Input.</param>
public RdfXmlParserContext(IRdfHandler handler, TextReader input)
: base(handler)
{
_queue = new StreamingEventQueue <IRdfXmlEvent>(new StreamingEventGenerator(input, handler.GetBaseUri().ToSafeString()));
}
/// <summary>
/// Creates a new Parser Context which uses Streaming parsing
/// </summary>
/// <param name="handler">RDF Handler</param>
/// <param name="stream">Stream</param>
public RdfXmlParserContext(IRdfHandler handler, Stream stream)
: base(handler)
{
this._queue = new StreamingEventQueue <IRdfXmlEvent>(new StreamingEventGenerator(stream, handler.GetBaseUri().ToSafeString()));
}