Examples with Quad org.apache.jena.sparql.core.Quad used on opensource projects

Example 26 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class TestFmtUtils method stringForQuadEncoding.

@Test
public void stringForQuadEncoding() {
    Node n1 = NodeFactory.createURI("q1");
    Quad quad = new Quad(n1, getTriple());
    assertEquals("<q1> <n1> <n2> \"l3\"", stringForQuad(quad));
}

Example 27 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class AbstractQuadOutputFormatTests method generateTuples.

@Override
protected Iterator<QuadWritable> generateTuples(int num) {
    List<QuadWritable> qs = new ArrayList<QuadWritable>();
    for (int i = 0; i < num; i++) {
        Quad q = new Quad(NodeFactory.createURI("http://example.org/graphs/" + i), NodeFactory.createURI("http://example.org/subjects/" + i), NodeFactory.createURI("http://example.org/predicate"), NodeFactory.createLiteral(Integer.toString(i), XSDDatatype.XSDinteger));
        qs.add(new QuadWritable(q));
    }
    return qs.iterator();
}

Example 28 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class AbstractTriplesToQuadsMapper method map.

@Override
protected final void map(TKey key, TripleWritable value, Context context) throws IOException, InterruptedException {
    Triple triple = value.get();
    Node graphNode = this.selectGraph(triple);
    context.write(key, new QuadWritable(new Quad(graphNode, triple)));
}

Example 29 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class TestEmbeddedFuseki method embedded_04.

@Test
public void embedded_04() {
    DatasetGraph dsg = dataset();
    Txn.executeWrite(dsg, () -> {
        Quad q = SSE.parseQuad("(_ :s :p _:b)");
        dsg.add(q);
    });
    // A service with just being able to do quads operations
    // That is, GET, POST, PUT on  "/data" in N-quads and TriG. 
    DataService dataService = new DataService(dsg);
    dataService.addEndpoint(OperationName.Quads_RW, "");
    dataService.addEndpoint(OperationName.Query, "");
    dataService.addEndpoint(OperationName.Update, "");
    int port = FusekiLib.choosePort();
    FusekiEmbeddedServer server = FusekiEmbeddedServer.create().setPort(port).add("/data", dataService).build();
    server.start();
    try {
        // Put data in.
        String data = "(graph (:s :p 1) (:s :p 2) (:s :p 3))";
        Graph g = SSE.parseGraph(data);
        HttpEntity e = graphToHttpEntity(g);
        HttpOp.execHttpPut("http://localhost:" + port + "/data", e);
        // Get data out.
        try (TypedInputStream in = HttpOp.execHttpGet("http://localhost:" + port + "/data")) {
            Graph g2 = GraphFactory.createDefaultGraph();
            RDFDataMgr.read(g2, in, RDFLanguages.contentTypeToLang(in.getContentType()));
            assertTrue(g.isIsomorphicWith(g2));
        }
        // Query.
        query("http://localhost:" + port + "/data", "SELECT * { ?s ?p ?o}", qExec -> {
            ResultSet rs = qExec.execSelect();
            int x = ResultSetFormatter.consume(rs);
            assertEquals(3, x);
        });
        // Update
        UpdateRequest req = UpdateFactory.create("CLEAR DEFAULT");
        UpdateExecutionFactory.createRemote(req, "http://localhost:" + port + "/data").execute();
        // Query again.
        query("http://localhost:" + port + "/data", "SELECT * { ?s ?p ?o}", qExec -> {
            ResultSet rs = qExec.execSelect();
            int x = ResultSetFormatter.consume(rs);
            assertEquals(0, x);
        });
    } finally {
        server.stop();
    }
}

Example 30 with Quad

use of org.apache.jena.sparql.core.Quad in project jena by apache.

the class VariableUsageVisitor method visit.

@Override
public void visit(OpQuadBlock quadBlock) {
    Collection<Var> vars = new ArrayList<>();
    for (Quad q : quadBlock.getPattern().getList()) {
        Vars.addVarsFromQuad(vars, q);
    }
    action(vars);
}