Re: Datasource notifications via nsIRDFXMLParser

Neil Stansbury wrote:
> I am loading remote rdf into an In-Mem-DS with the
> nsIRDFXMLParser.parseAsync() method where I pass the returned
> nsIStreamListener into an nsIHttpChannel.asyncOpen() method:
> 
> var nsIStreamListener = nsIRDFXMLParser.parseAsync( Ds, baseUri );
> 
> [...]
> nsIHttpChannel.requestMethod = "GET";
> nsIHttpChannel.notificationCallbacks = nsIRequestor;
> nsIHttpChannel.asyncOpen( nsIStreamListener, null );
> 
> My nsIProgressEventSink methods on the channel gets called fine, but I
> need to get some form of "onEndLoad()" notification when the data has
> been retrieved and parsed by the Ds. The only way I can see is by
> wrapping the nsIStreamListener and forwarding the calls - but there must
> be a better way??

No, this would be on nsIRDFXMLSink, which is only implemented by the 
rdf/xml datasource. Yes, parsing story is on my bug list.

> I can't use a composite-ds's GetDataSource() (and thus sinkObserver) as
> the request Uri has arguments encoded in it, and so generates a new ds
> for each request.

You only need the query hack for RDF datasources you get thru the 
RDFService. If you load by hand into an in-memory-datasource, you don't 
need that at all, as it doesn't RegisterDataSource.

Axel