Package org.openjena.riot

Examples of org.openjena.riot.Lang

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            String filename = getValue(argFile) ;
            log.info("Dataset: in-memory: load file: "+filename) ;
            if ( ! FileOps.exists(filename) )
                throw new CmdException("File not found: "+filename) ;

            Lang language = Lang.guess(filename) ;
            if ( language == null )
                throw new CmdException("Can't guess language for file: "+filename) ;
            InputStream input = IO.openFile(filename) ;
           
            if ( language.isQuads() )
            {
                Sink<Quad> sink = new SinkQuadsToDataset(dsg) ;
                RiotLoader.readQuads(input, language, filename, sink) ;
            }
            else
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        // Yes - we ignore the charset.
        // Either it's XML and so the XML parser deals with it, or the
        // language determines the charset and the parsers offer InputStreams.  
      
        Lang lang = FusekiLib.langFromContentType(ts.getMediaType()) ;
        if ( lang == null )
            throw new FusekiException("Unknown lang for "+ts.getMediaType()) ;
        Sink<Triple> sink = new SinkTriplesToGraph(graph) ;
        LangRIOT parser = RiotReader.createParserTriples(ts, lang, base, sink) ;
        parser.parse() ;
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    }
   
    // ** Worker.
    private static void readUtil(Graph graph, String uri, int limit)
    {
        Lang lang = Lang.guess(uri, Lang.RDFXML) ;
       
        Sink<Triple> sink = new SinkTriplesToGraph(graph) ;
        sink = new SinkLimited<Triple>(sink, limit) ;
       
        // TODO Conneg - awaiting RIOT code upgrade.
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            {
                contentType = WebContent.contentTypeTextPlain ;
                charset = WebContent.charsetUTF8 ;
            }
           
            Lang lang = FusekiLib.langFromContentType(ts.getMediaType()) ;
            RDFWriter rdfw = FusekiLib.chooseWriter(lang) ;
                
            if ( rdfw instanceof RDFXMLWriterI )
                rdfw.setProperty("showXmlDeclaration", "true") ;
           
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        if ( modLangParse.skipOnBadTerm() )
        {
            // TODO skipOnBadterm
        }
       
        Lang lang = selectLang(filename, Lang.NQUADS) ; 
        LangHandler handler = dispatch.get(lang) ;
        if ( handler == null )
            throw new CmdException("Undefined language: "+lang) ;
       
        // If multiple files, choose the overall labels.
        if ( langHandlerOverall == null )
            langHandlerOverall = handler ;
        else
        {
            if ( langHandlerOverall != langHandlerAny )
            {
                if ( langHandlerOverall != handler )
                    langHandlerOverall = langHandlerAny ;
            }
        }
       
        // Make a flag.
        // Input and output subflags.
        // If input is "label, then output using NodeToLabel.createBNodeByLabelRaw() ;
        // else use NodeToLabel.createBNodeByLabel() ;
        // Also, as URI.
        final boolean labelsAsGiven = false ;
       
        SinkCounting<?> sink ;
        LangRIOT parser ;
       
        NodeToLabel labels = SyntaxLabels.createNodeToLabel() ;
        if ( labelsAsGiven )
            labels = NodeToLabel.createBNodeByLabelEncoded() ;
       
        // Uglyness because quads and triples aren't subtype of some Tuple<Node>
        // That would change a lot (Triples came several years before Quads).
        if ( lang.isTriples() )
        {
            Sink<Triple> s = SinkNull.create() ;
            if ( ! modLangParse.toBitBucket() )
                s = new SinkTripleOutput(System.out, null, labels) ;
            if ( setup != null )
                s = InfFactory.infTriples(s, setup) ;
           
            SinkCounting<Triple> sink2 = new SinkCounting<Triple>(s) ;
           
            if ( lang.equals(Lang.RDFXML) )
                // Adapter round ARP RDF/XML reader.
                parser = LangRDFXML.create(in, baseURI, filename, errHandler, sink2) ;
            else
                parser = RiotReader.createParserTriples(in, lang, baseURI, sink2) ;
           
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//        if ( false )
//            SetupTDB.makeNodeTable(location, locationString, 0, outputFile, 0) ;

        for( String filename : datafiles)
        {
            Lang lang = Lang.guess(filename, Lang.NQUADS) ;
            if ( lang == null )
                // Does not happen due to default above.
                cmdError("File suffix not recognized: " +filename) ;
            if ( ! FileOps.exists(filename) )
                cmdError("File does not exist: "+filename) ;
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        {
            if ( datafiles.size() > 0 )
                cmdLog.info("Load: "+filename+" -- "+Utils.nowAsString()) ;
           
            InputStream in = IO.openFile(filename) ;
            Lang lang = Lang.guess(filename, Lang.NQUADS) ;
            if ( lang.isTriples() )
                RiotLoader.readTriples(in, lang, null, sink2) ;
            else
                RiotLoader.readQuads(in, lang, null, sink) ;
        }
        sink.close() ;
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        {
          actualContentType = modelContentType;
        }
       
        //Try to select language appropriately here based on the model content type
        Lang lang = WebContent.contentTypeToLang(actualContentType);
        if (!lang.isTriples())
            throw new QueryException("Endpoint returned Content Type: " + actualContentType + " which is not a valid RDF Graph syntax");
        model.read(in, null, lang.getName()) ;
        this.close() ;
        return model ;
    }
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        {
            actualContentType = modelContentType;
        }
       
        //Try to select language appropriately here based on the model content type
        Lang lang = WebContent.contentTypeToLang(actualContentType);
        if (!lang.isTriples()) throw new QueryException("Endpoint returned Content Type: " + actualContentType + " which is not a valid RDF Graph syntax");
       
        return RiotReader.createIteratorTriples(in, lang, null);
    }
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     * @param contentType
     */
    public void setModelContentType(String contentType)
    {
      //Check that this is a valid setting
      Lang lang = WebContent.contentTypeToLang(contentType);
      if (lang == null) throw new IllegalArgumentException("Given Content Type '" + contentType + "' is not supported by RIOT");
      if (!lang.isTriples()) throw new IllegalArgumentException("Given Content Type '" + contentType + " is not a RDF Graph format");
     
      modelContentType = contentType;
    }
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Related Classes of org.openjena.riot.Lang

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  • com.hp.hpl.jena.tdb.TDBLoader
  • org.apache.jena.fuseki.FusekiCmd
  • org.apache.jena.fuseki.http.DatasetGraphAccessorHTTP
  • org.apache.jena.fuseki.migrate.GraphLoadUtils
  • org.apache.jena.fuseki.servlets.ResponseModel
  • org.apache.jena.fuseki.servlets.REST_Quads
  • org.apache.jena.fuseki.servlets.SPARQL_REST_R
  • org.apache.jena.fuseki.validation.DataValidator
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