Examples with RDFFormat org.openrdf.rio.RDFFormat used on opensource projects

Example 11 with RDFFormat

use of org.openrdf.rio.RDFFormat in project incubator-rya by apache.

the class RdfController method loadRdf.

@RequestMapping(value = "/loadrdf", method = RequestMethod.POST)
public void loadRdf(@RequestParam(required = false) final String format, @RequestParam(value = RdfCloudTripleStoreConfiguration.CONF_CV, required = false) final String cv, @RequestParam(required = false) final String graph, @RequestBody final String body, final HttpServletResponse response) throws RepositoryException, IOException, RDFParseException {
    RDFFormat format_r = RDFFormat.RDFXML;
    if (format != null) {
        format_r = RDFFormat.valueOf(format);
        if (format_r == null) {
            throw new RuntimeException("RDFFormat[" + format + "] not found");
        }
    }
    // add named graph as context (if specified).
    final List<Resource> contextList = new ArrayList<Resource>();
    if (graph != null) {
        contextList.add(VALUE_FACTORY.createURI(graph));
    }
    SailRepositoryConnection conn = null;
    try {
        conn = repository.getConnection();
        if (conn.getSailConnection() instanceof RdfCloudTripleStoreConnection && cv != null) {
            final RdfCloudTripleStoreConnection<?> sailConnection = (RdfCloudTripleStoreConnection<?>) conn.getSailConnection();
            sailConnection.getConf().set(RdfCloudTripleStoreConfiguration.CONF_CV, cv);
        }
        conn.add(new StringReader(body), "", format_r, contextList.toArray(new Resource[contextList.size()]));
        conn.commit();
    } finally {
        if (conn != null) {
            conn.close();
        }
    }
}

Example 12 with RDFFormat

use of org.openrdf.rio.RDFFormat in project wikidata-query-rdf by wikimedia.

the class RDFChunkSerializer method serializeAsChunks.

public List<RDFDataChunk> serializeAsChunks(Collection<Statement> statements, String mime, int softMaxSize) {
    List<RDFDataChunk> chunks = new ArrayList<>();
    StringWriter stringWriter = new StringWriter();
    RDFFormat fileFormatForMIMEType = writerRegistry.getFileFormatForMIMEType(mime);
    if (fileFormatForMIMEType == null) {
        throw new IllegalArgumentException("Unsupported mime type [" + mime + "]");
    }
    RDFWriter writer = writerRegistry.get(fileFormatForMIMEType).getWriter(stringWriter);
    try {
        boolean pending = false;
        writer.startRDF();
        for (Statement s : statements) {
            writer.handleStatement(s);
            pending = true;
            if (stringWriter.getBuffer().length() > softMaxSize) {
                writer.endRDF();
                chunks.add(new RDFDataChunk(stringWriter.toString(), mime));
                stringWriter.getBuffer().setLength(0);
                pending = false;
                writer.startRDF();
            }
        }
        if (pending) {
            writer.endRDF();
            chunks.add(new RDFDataChunk(stringWriter.toString(), mime));
        }
    } catch (RDFHandlerException e) {
        throw new IllegalStateException("Cannot write RDF chunks", e);
    }
    return chunks;
}

Example 13 with RDFFormat

use of org.openrdf.rio.RDFFormat in project stanbol by apache.

the class SesameModelWriter method activate.

@Activate
protected void activate(ComponentContext ctx) {
    // parse the supported RDF formats
    Collection<String> mts = new LinkedHashSet<String>();
    for (RDFFormat format : RDFFormat.values()) {
        mts.addAll(format.getMIMETypes());
    }
    List<MediaType> formats = new ArrayList<MediaType>(mts.size());
    for (String format : mts) {
        try {
            formats.add(MediaType.valueOf(format));
        } catch (IllegalArgumentException e) {
            log.error("Unable to parse MediaType for Sesame RDF format '" + format + "'!", e);
        }
    }
    supportedRrfFormats = Collections.unmodifiableList(formats);
}