com.hp.hpl.jena.sparql.core.Quad Java Examples

protected boolean nextStreamingQuadKeyValueIgnoreCollections() throws IOException, InterruptedException {
    if(rdfIter == null) return false;
    setKey();
    write("<sem:triples xmlns:sem='http://marklogic.com/semantics'>");
    int max = MAXTRIPLESPERDOCUMENT;
    while (max > 0 && rdfIter.hasNext()) {
        Quad quad = (Quad) rdfIter.next();
        write("<sem:triple>");
        write(subject(quad.getSubject()));
        write(predicate(quad.getPredicate()));
        write(object(quad.getObject()));
        write("</sem:triple>");
        notifyUser();
        max--;
    }
    write("</sem:triples>\n");

    if (!rdfIter.hasNext()) {
        pos = 1;
    }

    writeValue();
    return true;
}
 

@Override
public void load( 
		final SolrQueryRequest request, 
		final SolrQueryResponse response,
		final ContentStream stream, 
		final UpdateRequestProcessor processor) throws Exception {
	
	final PipedRDFIterator<Quad> iterator = new PipedRDFIterator<Quad>();
	final StreamRDF inputStream = new PipedQuadsStream(iterator);
	
	executor.submit(new Runnable() {
		@Override
		public void run() {
			try {
				RDFDataMgr.parse(
						inputStream, 
						stream.getStream(), 
						RDFLanguages.contentTypeToLang(stream.getContentType()));
			} catch (final IOException exception) {
				throw new SolrException(ErrorCode.SERVER_ERROR, exception);
			}					
		}
	});
	
	final DatasetGraph dataset = new LocalDatasetGraph(request, response);
	while (iterator.hasNext()) {
		dataset.add(iterator.next());
	}									
}
 

static public String matchSingleTmx(Node tmx, DatasetGraph g, Model m){
    String sq="";
    if (g.contains(null, tmx, typeNode, instantNode)) { // One Instant
        sq += "?ev <http://semanticweb.cs.vu.nl/2009/11/sem/hasTime> ?t . ?t a <http://www.w3.org/TR/owl-time#Instant> . ";
        for (Iterator<Quad> iter = g.find(null, tmx, specificTimeNode, null); iter.hasNext(); ) {
            Quad q = iter.next();
            sq += "?t <http://www.w3.org/TR/owl-time#inDateTime> <" + q.asTriple().getObject() + "> . ";
        }
    } else { // One Interval

        String intervalQuery = "SELECT ?begin ?end WHERE { <" + tmx + ">  <http://www.w3.org/TR/owl-time#hasBeginning> ?begin ; <http://www.w3.org/TR/owl-time#hasEnd> ?end . }";

        Query inQuery = QueryFactory.create(intervalQuery);

        // Create a single execution of this query, apply to a model
        // which is wrapped up as a Dataset
        QueryExecution inQexec = QueryExecutionFactory.create(inQuery, m);

        try {
            // Assumption: it’s a SELECT query.
            ResultSet inrs = inQexec.execSelect();
            // The order of results is undefined.
            for (; inrs.hasNext(); ) {
                QuerySolution evrb = inrs.nextSolution();
                // Get title - variable names do not include the ’?’
                String begin = evrb.get("begin").toString();
                String end = evrb.get("end").toString();

                String unionQuery = "{ ?ev <http://semanticweb.cs.vu.nl/2009/11/sem/hasTime> ?t . ?t a <http://www.w3.org/TR/owl-time#Interval> . ?t <http://www.w3.org/TR/owl-time#hasBeginning> <" + begin + "> ; <http://www.w3.org/TR/owl-time#hasEnd> <" + end + "> . } ";
                unionQuery += "UNION ";
                unionQuery += "{ ?ev <http://semanticweb.cs.vu.nl/2009/11/sem/hasEarliestBeginTimeStamp> ?t1 . ?t1 a <http://www.w3.org/TR/owl-time#Instant> . ?t1 <http://www.w3.org/TR/owl-time#inDateTime> <" + begin + "> . ?ev <http://semanticweb.cs.vu.nl/2009/11/sem/hasEarliestEndTimeStamp> ?t2 . ?t2 a <http://www.w3.org/TR/owl-time#Instant> . ?t2 <http://www.w3.org/TR/owl-time#inDateTime> <" + end + "> . } ";
                sq += unionQuery;
            }
        } finally {
            inQexec.close();
        }
    }
    return sq;
}
 

@Override
protected Iterator<Quad> findInDftGraph(final Node s, final Node p, final Node o) {
	return triples2quads(Quad.tripleInQuad, getDefaultGraph().find(s, p, o));
}
 

@Override
protected Iterator<Quad> findInSpecificNamedGraph(final Node g, final Node s, final Node p, final Node o) {
	return triples2quads(g, getGraph(g).find(s, p, o));
}
 

@Override
protected Iterator<Quad> findInAnyNamedGraphs(final Node s, final Node p, final Node o) {
	return triples2quads(Quad.tripleInQuad, getDefaultGraph().find(s, p, o));
}