Examples with ResultSet org.apache.jena.query.ResultSet used on opensource projects

Example 66 with ResultSet

use of org.apache.jena.query.ResultSet in project jena by apache.

the class FusekiBuilder method getOne.

public static RDFNode getOne(Resource svc, String property) {
    String ln = property.substring(property.indexOf(':') + 1);
    ResultSet rs = FusekiLib.query("SELECT * { ?svc " + property + " ?x}", svc.getModel(), "svc", svc);
    if (!rs.hasNext())
        throw new FusekiConfigException("No " + ln + " for service " + FusekiLib.nodeLabel(svc));
    RDFNode x = rs.next().get("x");
    if (rs.hasNext())
        throw new FusekiConfigException("Multiple " + ln + " for service " + FusekiLib.nodeLabel(svc));
    return x;
}

Example 67 with ResultSet

use of org.apache.jena.query.ResultSet in project jena by apache.

the class EvaluatorSimple method dump.

private static void dump(Table table) {
    System.out.println("Table: " + Lib.className(table));
    QueryIterator qIter = table.iterator(null);
    ResultSet rs = new ResultSetStream(table.getVarNames(), null, table.iterator(null));
    ResultSetFormatter.out(rs);
}

Example 68 with ResultSet

use of org.apache.jena.query.ResultSet in project jena by apache.

the class SelectBuilderTest method testVarReplacementInSubQuery.

@Test
public void testVarReplacementInSubQuery() throws ParseException {
    Model m = ModelFactory.createDefaultModel();
    Resource r = m.createResource("urn:one");
    m.add(r, m.getProperty("urn:p:one"), m.createTypedLiteral(1));
    m.add(r, m.getProperty("urn:p:two"), m.createTypedLiteral(3));
    m.add(r, m.getProperty("urn:p:three"), m.createTypedLiteral(5));
    r = m.createResource("urn:two");
    m.add(r, m.getProperty("urn:p:one"), m.createTypedLiteral(2));
    m.add(r, m.getProperty("urn:p:two"), m.createTypedLiteral(4));
    m.add(r, m.getProperty("urn:p:three"), m.createTypedLiteral(6));
    SelectBuilder sb = new SelectBuilder().addVar("?x").addVar("?p").addWhere("?x", "?p", "?o").addFilter("?o < ?limit");
    builder.addPrefix("xsd", XSD.getURI()).addVar("?x").addVar("count(?p)", "?c").addWhere("?x", "?p", "?o2").addSubQuery(sb).addGroupBy("?x");
    builder.setVar("?limit", 4);
    QueryExecution qexec = QueryExecutionFactory.create(builder.build(), m);
    ResultSet results = qexec.execSelect();
    assertTrue(results.hasNext());
    for (; results.hasNext(); ) {
        QuerySolution soln = results.nextSolution();
        assertTrue(soln.contains("x"));
        assertTrue(soln.contains("c"));
        if ("urn:one".equals(soln.get("?x").asResource().getURI())) {
            assertEquals(2, soln.get("?c").asLiteral().getInt());
        } else {
            assertEquals(1, soln.get("?c").asLiteral().getInt());
        }
    }
}

Example 69 with ResultSet

use of org.apache.jena.query.ResultSet in project jena by apache.

the class SelectBuilderTest method testAggregatorsInSubQuery.

@Test
public void testAggregatorsInSubQuery() throws ParseException {
    Model m = ModelFactory.createDefaultModel();
    Resource r = m.createResource("urn:one");
    m.add(r, m.getProperty("urn:p:one"), m.createTypedLiteral(1));
    m.add(r, m.getProperty("urn:p:two"), m.createTypedLiteral(3));
    m.add(r, m.getProperty("urn:p:three"), m.createTypedLiteral(5));
    r = m.createResource("urn:two");
    m.add(r, m.getProperty("urn:p:one"), m.createTypedLiteral(2));
    m.add(r, m.getProperty("urn:p:two"), m.createTypedLiteral(4));
    m.add(r, m.getProperty("urn:p:three"), m.createTypedLiteral(6));
    SelectBuilder sb = new SelectBuilder().addVar("?x").addVar("max(?o)", "?max").addWhere("?x", "?p", "?o").addGroupBy("?x");
    builder.addPrefix("xsd", XSD.getURI()).addVar("?x").addVar("min(?o2)", "?min").addWhere("?x", "?p2", "?o2").addSubQuery(sb).addFilter("?max = '6'^^xsd:int").addGroupBy("?x");
    QueryExecution qexec = QueryExecutionFactory.create(builder.build(), m);
    ResultSet results = qexec.execSelect();
    assertTrue(results.hasNext());
    for (; results.hasNext(); ) {
        QuerySolution soln = results.nextSolution();
        assertTrue(soln.contains("x"));
        assertTrue(soln.contains("min"));
        assertEquals("urn:two", soln.get("?x").asResource().getURI());
        assertEquals(2, soln.get("?min").asLiteral().getInt());
    }
}

Example 70 with ResultSet

use of org.apache.jena.query.ResultSet in project jena by apache.

the class TestEmbeddedFuseki method embedded_03.

// Different dataset name.
@Test
public void embedded_03() {
    DatasetGraph dsg = dataset();
    int port = FusekiLib.choosePort();
    FusekiEmbeddedServer server = FusekiEmbeddedServer.create().setPort(port).add("/ds1", dsg).build();
    server.start();
    try {
        // Add while live.
        Txn.executeWrite(dsg, () -> {
            Quad q = SSE.parseQuad("(_ :s :p _:b)");
            dsg.add(q);
        });
        query("http://localhost:" + port + "/ds1/query", "SELECT * { ?s ?p ?o}", qExec -> {
            ResultSet rs = qExec.execSelect();
            int x = ResultSetFormatter.consume(rs);
            assertEquals(1, x);
        });
    } finally {
        server.stop();
    }
}