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

Example 26 with StreamRDF

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

the class REST_Quads_RW method doPutPostNonTxn.

private void doPutPostNonTxn(HttpAction action, boolean clearFirst) {
    DatasetGraph dsgTmp = DatasetGraphFactory.create();
    StreamRDF dest = StreamRDFLib.dataset(dsgTmp);
    UploadDetails details;
    try {
        details = Upload.incomingData(action, dest);
    } catch (RiotException ex) {
        ServletOps.errorBadRequest(ex.getMessage());
        return;
    }
    // Now insert into dataset
    action.beginWrite();
    try {
        DatasetGraph dsg = action.getActiveDSG();
        if (clearFirst)
            dsg.clear();
        FusekiLib.addDataInto(dsgTmp, dsg);
        action.commit();
        ServletOps.success(action);
    } catch (Exception ex) {
        // but it might and there is no harm safely trying.
        try {
            action.abort();
        } catch (Exception ex2) {
        }
        ServletOps.errorOccurred(ex.getMessage());
    } finally {
        action.endWrite();
    }
    ServletOps.uploadResponse(action, details);
}

Example 27 with StreamRDF

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

the class GraphLoadUtils method readUtil.

// ** Worker.
private static void readUtil(Graph graph, String uri, int limit) {
    StreamRDF sink = StreamRDFLib.graph(graph);
    sink = new StreamRDFLimited(sink, limit);
    RDFParser.source(uri).streamManager(Fuseki.webStreamManager).parse(sink);
}

Example 28 with StreamRDF

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

the class SPARQL_GSP_RW method addDataIntoNonTxn.

/** Add data where the destination does not support full transactions.
     *  In particular, with no abort, and actions probably going to the real storage
     *  parse errors can lead to partial updates.  Instead, parse to a temporary
     *  graph, then insert that data.  
     * @param action
     * @param cleanDest Whether to remove data first (true = PUT, false = POST)
     * @return whether the target existed beforehand.
     */
protected static UploadDetails addDataIntoNonTxn(HttpAction action, boolean overwrite) {
    Graph graphTmp = GraphFactory.createGraphMem();
    StreamRDF dest = StreamRDFLib.graph(graphTmp);
    UploadDetails details;
    try {
        details = Upload.incomingData(action, dest);
    } catch (RiotException ex) {
        ServletOps.errorBadRequest(ex.getMessage());
        return null;
    }
    // Now insert into dataset
    action.beginWrite();
    Target target = determineTarget(action);
    boolean existedBefore = false;
    try {
        if (action.log.isDebugEnabled())
            action.log.debug("  ->" + target);
        existedBefore = target.exists();
        if (overwrite && existedBefore)
            clearGraph(target);
        FusekiLib.addDataInto(graphTmp, target.dsg, target.graphName);
        details.setExistedBefore(existedBefore);
        action.commit();
        return details;
    } catch (Exception ex) {
        // but it might and there is no harm safely trying. 
        try {
            action.abort();
        } catch (Exception ex2) {
        }
        ServletOps.errorOccurred(ex.getMessage());
        return null;
    } finally {
        action.endWrite();
    }
}

Example 29 with StreamRDF

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

the class infer method exec.

@Override
protected void exec() {
    StreamRDF sink = StreamRDFLib.writer(System.out);
    sink = InfFactory.inf(sink, vocab);
    List<String> files = getPositionalOrStdin();
    if (files.isEmpty())
        files.add("-");
    for (String fn : files) processFile(fn, sink);
    IO.flush(System.out);
}

Example 30 with StreamRDF

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

the class ParserTestBaseLib method parseDataset.

/** Parse for a language - convert errors and warning to ErrorHandlerEx */
static DatasetGraph parseDataset(Lang lang, String... strings) {
    DatasetGraph dsg = DatasetGraphFactory.create();
    StreamRDF dest = StreamRDFLib.dataset(dsg);
    parse(lang, dest, strings);
    return dsg;
}