Examples with StreamRDF org.apache.jena.riot.system.StreamRDF used on opensource projects

Example 1 with StreamRDF

use of org.apache.jena.riot.system.StreamRDF in project jena by apache.

the class TestTriXBad method trix_bad.

@Test(expected = RiotException.class)
public void trix_bad() {
    ErrorHandler err = ErrorHandlerFactory.getDefaultErrorHandler();
    try {
        ErrorHandlerFactory.setDefaultErrorHandler(ErrorHandlerFactory.errorHandlerSimple());
        InputStream in = IO.openFile(fInput);
        StreamRDF sink = StreamRDFLib.sinkNull();
        RDFParser.source(in).lang(Lang.TRIX).parse(sink);
    } finally {
        ErrorHandlerFactory.setDefaultErrorHandler(err);
    }
}

Example 2 with StreamRDF

use of org.apache.jena.riot.system.StreamRDF in project jena by apache.

the class SPARQL_REST_RW method addDataIntoTxn.

/** Directly add data in a transaction.
     * Assumes recovery from parse errors by transaction abort.
     * Return whether the target existed before.
     * @param action
     * @param cleanDest Whether to remove data first (true = PUT, false = POST)
     * @return whether the target existed beforehand
     */
protected static boolean addDataIntoTxn(HttpAction action, boolean overwrite) {
    action.beginWrite();
    Target target = determineTarget(action);
    boolean existedBefore = false;
    try {
        if (log.isDebugEnabled())
            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
        action.abort();
        errorBadRequest(ex.getMessage());
        return existedBefore;
    } catch (Exception ex) {
        // Something else went wrong.  Backout.
        action.abort();
        errorOccurred(ex.getMessage());
        return existedBefore;
    } finally {
        action.endWrite();
    }
}

Example 3 with StreamRDF

use of org.apache.jena.riot.system.StreamRDF in project jena by apache.

the class sdbload method loadOne.

private void loadOne(String filename, boolean replace) {
    Model model = null;
    Dataset dataset = null;
    PrefixMapping pmap;
    Lang lang = RDFLanguages.filenameToLang(filename);
    if (lang == null)
        throw new CmdException("Data syntax not recognized: " + filename);
    // --graph or not
    if (modGraph.getGraphName() != null) {
        model = modGraph.getModel(getStore());
        pmap = model;
    } else {
        dataset = SDBFactory.connectDataset(getStore());
        pmap = dataset.asDatasetGraph().getDefaultGraph().getPrefixMapping();
    }
    // For monitoring only.
    Graph monitorGraph = (model == null) ? null : model.getGraph();
    if (replace) {
        if (model != null)
            model.removeAll();
        else
            dataset.asDatasetGraph().clear();
    }
    boolean showProgress = isVerbose() || getModTime().timingEnabled();
    if (showProgress)
        output.print("Start load: %s", filename);
    StreamRDF stream = streamToStore(pmap, getStore());
    if (modGraph.getGraphName() != null) {
        Node gn = NodeFactory.createURI(modGraph.getGraphName());
        stream = StreamRDFLib.extendTriplesToQuads(gn, stream);
    }
    ProgressMonitor progress = null;
    if (showProgress) {
        progress = new ProgressMonitor(filename, 100_000, 10, output);
        stream = new ProgressStreamRDF(stream, progress);
    }
    if (progress != null)
        progress.start();
    // Load!
    RDFDataMgr.parse(stream, filename, lang);
    if (progress != null) {
        progress.finish();
        progress.finishMessage();
    }
}

Example 4 with StreamRDF

use of org.apache.jena.riot.system.StreamRDF in project jena by apache.

the class ParserTestBaseLib method parseGraph.

/** Parse for a language - convert errors.wranigns to ErrorHandlerEx */
static Graph parseGraph(Lang lang, String... strings) {
    Graph graph = GraphFactory.createDefaultGraph();
    StreamRDF dest = StreamRDFLib.graph(graph);
    parse(lang, dest, strings);
    return graph;
}

Example 5 with StreamRDF

use of org.apache.jena.riot.system.StreamRDF in project jena by apache.

the class TurtleWriterBlocks method output.

@Override
protected void output(IndentedWriter out, Graph graph, PrefixMap prefixMap, String baseURI, Context context) {
    StreamRDF dest = new WriterStreamRDFBlocks(out);
    dest.start();
    dest.base(baseURI);
    StreamOps.sendGraphToStream(graph, dest, prefixMap);
    dest.finish();
}