Examples of org.apache.jena.riot.system.StreamRDF

org.apache.jena.riot.system.StreamRDF
The interface for the output of RDF, such as the RIOT parsers. The parser event model is that items are emitted for signficant events. The events are start/finish, emitting triples/quads/tuples as necessary, prefixes and base directives. Tuples are generalized triples or quads. A triple language will call triple(), quad language quad() in preference.

     * @param sink      Where to send the quads from the parser.
     * @see             RiotReader#parse
     */
    public static void parseQuads(InputStream in, Lang lang, String baseIRI, Sink<Quad> sink)
    {
        StreamRDF dest = StreamRDFLib.sinkQuads(sink) ;
        parse(in, lang, baseIRI, dest) ;
    }

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            Lang lang = RDFDataMgr.determineLang(source, s.getContentType(), null) ;
            
            if ( RDFLanguages.isTriples(lang) ) {
                // Triples
                Graph g = GraphFactory.createGraphMem() ;
                StreamRDF stream = StreamRDFLib.graph(g) ;
                RDFDataMgr.parse(stream, s, source) ;
                Graph g2 = graph(graphStore, dest) ;
                GraphUtil.addInto(g2, g) ;
            } else {
                // Quads
                if ( dest != null )
                    throw new UpdateException("Attempt to load quads into a graph") ;
                DatasetGraph dsg = DatasetGraphFactory.createMem() ;
                StreamRDF stream = StreamRDFLib.dataset(dsg) ;
                RDFDataMgr.parse(stream, s, source) ;
                Iterator<Quad>  iter = dsg.find() ; 
                for ( ; iter.hasNext() ; )
                {
                    Quad q = iter.next() ;

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     * @param sink      Where to send the triples from the parser.
     * @see             RiotReader#parse
     */  
    public static void parseTriples(String filename, Lang lang, String baseIRI, Sink<Triple> sink)
    {
        StreamRDF dest = StreamRDFLib.sinkTriples(sink) ;
        parse(filename, lang, baseIRI, dest) ;
    }

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     * @param sink      Where to send the triples from the parser.
     * @see             RiotReader#parse
     */  
    public static void parseTriples(InputStream in, Lang lang, String baseIRI, Sink<Triple> sink)
    {
        StreamRDF dest = StreamRDFLib.sinkTriples(sink) ;
        parse(in, lang, baseIRI, dest) ;
    }

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     * @param sink      Where to send the quads from the parser.
     * @see             RiotReader#parse
     */
    public static void parseQuads(String filename, Lang lang, String baseIRI, Sink<Quad> sink)
    {
        StreamRDF dest = StreamRDFLib.sinkQuads(sink) ;
        parse(filename, lang, baseIRI, dest) ;
    }

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    {
        action.beginWrite() ;
        try {
            String name = action.request.getRequestURL().toString() ;
            DatasetGraph dsg = action.getActiveDSG() ;
            StreamRDF dest = StreamRDFLib.dataset(dsg) ;
            LangRIOT parser = RiotReader.createParser(action.request.getInputStream(), lang, name , dest) ;
            parser.parse() ;
            action.commit();
            success(action) ;
        } catch (IOException ex) { action.abort() ; }

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            DatasetGraph dsg = action.getActiveDSG() ;
            // This should not be anythign other than the datasets name via this route.  
            String name = action.request.getRequestURL().toString() ;
            //log.info(format("[%d] ** Content-length: %d", action.id, action.request.getContentLength())) ;  
            Graph g = dsg.getDefaultGraph() ;
            StreamRDF dest = StreamRDFLib.graph(g) ;
            LangRIOT parser = RiotReader.createParser(action.request.getInputStream(), lang, name , dest) ;
            parser.parse() ;
            action.commit();
            success(action) ;
        } catch (IOException ex) { action.abort() ; }

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            if ( ! name.endsWith("/") )
                name = name+ "/"  ;
            name = name+(++counter) ;
            Node gn = NodeFactory.createURI(name) ;
            Graph g = dsg.getGraph(gn) ;
            StreamRDF dest = StreamRDFLib.graph(g) ;
            LangRIOT parser = RiotReader.createParser(action.request.getInputStream(), lang, name , dest) ;
            parser.parse() ;
            log.info(format("[%d] Location: %s", action.id, name)) ;
            action.response.setHeader("Location",  name) ;
            action.commit();

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                log.debug("  ->"+target) ;
            existedBefore = target.exists() ;
            Graph g = target.graph() ;
            if ( overwrite && existedBefore )
                clearGraph(target) ;
            StreamRDF sink = StreamRDFLib.graph(g) ;
            incomingData(action, sink);
            action.commit() ;
            return existedBefore ;
        } catch (RiotException ex) { 
            // Parse error

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     * @return whether the target existed beforehand.
     */
    
    protected static boolean addDataIntoNonTxn(HttpAction action, boolean overwrite) {
        Graph graphTmp = GraphFactory.createGraphMem() ;
        StreamRDF dest = StreamRDFLib.graph(graphTmp) ;


        try { incomingData(action, dest); }
        catch (RiotException ex) {
            errorBadRequest(ex.getMessage()) ;
            return false ;

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