public nsIStreamListener
public nsIStreamListener, public rdfIDataSource
NS_IMPL_ISUPPORTS1(ProxyStream, nsIInputStream)//----------------------------------------------------------------------//// RDFXMLDataSourceImpl//class RDFXMLDataSourceImpl : public nsIRDFDataSource,                             public nsIRDFRemoteDataSource,                             public nsIRDFXMLSink,                             public nsIRDFXMLSource,                             public nsIStreamListener{protected:    enum LoadState {        eLoadState_Unloaded,        eLoadState_Pending,        eLoadState_Loading,        eLoadState_Loaded    };