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

Example 11 with ResultSet

use of org.apache.jena.query.ResultSet 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 12 with ResultSet

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

the class ModResultsIn method getResultSet.

public ResultSet getResultSet() {
    if (resultSet != null)
        return resultSet;
    if (resultsFilename == null) {
        System.err.println("No result file name");
        throw new TerminationException(1);
    }
    try {
        if (resultsFilename.equals("-"))
            return ResultSetFactory.load(System.in, inputFormat);
        ResultSet rs = ResultSetFactory.load(resultsFilename, inputFormat);
        if (rs == null) {
            System.err.println("Failed to read the result set");
            throw new TerminationException(9);
        }
        resultSet = rs;
        return resultSet;
    } catch (NotFoundException ex) {
        System.err.println("File not found: " + resultsFilename);
        throw new TerminationException(9);
    } catch (ARQInternalErrorException intEx) {
        System.err.println(intEx.getMessage());
        if (intEx.getCause() != null) {
            System.err.println("Cause:");
            intEx.getCause().printStackTrace(System.err);
            System.err.println();
        }
        intEx.printStackTrace(System.err);
        throw new TerminationException(99);
    }
}

Example 13 with ResultSet

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

the class QueryEngineTest method testOpenQueryType.

@Test
public void testOpenQueryType() {
    final SecurityEvaluator eval = new MockSecurityEvaluator(true, true, true, true, true, true);
    final SecuredModel model = Factory.getInstance(eval, "http://example.com/securedModel", baseModel);
    try {
        final String query = "prefix fn: <http://www.w3.org/2005/xpath-functions#>  " + " SELECT ?foo ?bar WHERE " + " { ?foo a <http://example.com/class> ; " + "?bar [] ." + "  } ";
        try (QueryExecution qexec = QueryExecutionFactory.create(query, model)) {
            final ResultSet results = qexec.execSelect();
            int count = 0;
            for (; results.hasNext(); ) {
                count++;
                results.nextSolution();
            }
            Assert.assertEquals(8, count);
        }
    } finally {
        model.close();
    }
}

Example 14 with ResultSet

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

the class QueryEngineTest method testRestrictedQueryType.

@Test
public void testRestrictedQueryType() {
    final SecurityEvaluator eval = new MockSecurityEvaluator(true, true, true, true, true, true) {

        @Override
        public boolean evaluate(final Object principal, final Action action, final Node graphIRI, final Triple triple) {
            if (triple.getSubject().isURI() && triple.getSubject().getURI().equals("http://example.com/resource/1")) {
                return false;
            }
            return super.evaluate(principal, action, graphIRI, triple);
        }
    };
    final SecuredModel model = Factory.getInstance(eval, "http://example.com/securedModel", baseModel);
    try {
        final String query = "prefix fn: <http://www.w3.org/2005/xpath-functions#>  " + " SELECT ?foo ?bar WHERE " + " { ?foo a <http://example.com/class> ; " + "?bar [] ." + "  } ";
        try (QueryExecution qexec = QueryExecutionFactory.create(query, model)) {
            final ResultSet results = qexec.execSelect();
            int count = 0;
            for (; results.hasNext(); ) {
                count++;
                results.nextSolution();
            }
            Assert.assertEquals(4, count);
        }
    } finally {
        model.close();
    }
}

Example 15 with ResultSet

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

the class SelectBuilderTest method testAggregatorsInSelect.

@Test
public void testAggregatorsInSelect() throws ParseException {
    builder.addVar("?x").addVar("count(*)", "?c").addWhere("?x", "?p", "?o").addGroupBy("?x");
    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(1));
    m.add(r, m.getProperty("urn:p:two"), m.createTypedLiteral(3));
    m.add(r, m.getProperty("urn:p:three"), m.createTypedLiteral(5));
    QueryExecution qexec = QueryExecutionFactory.create(builder.build(), m);
    ResultSet results = qexec.execSelect();
    assertTrue(results.hasNext());
    for (; results.hasNext(); ) {
        QuerySolution soln = results.nextSolution();
        assertTrue(soln.contains("c"));
        assertTrue(soln.contains("x"));
        assertEquals(3, soln.get("c").asLiteral().getInt());
    }
    builder.addVar("min(?o)", "?min").addVar("max(?o)", "?max");
    qexec = QueryExecutionFactory.create(builder.build(), m);
    results = qexec.execSelect();
    assertTrue(results.hasNext());
    for (; results.hasNext(); ) {
        QuerySolution soln = results.nextSolution();
        assertTrue(soln.contains("c"));
        assertTrue(soln.contains("x"));
        assertTrue(soln.contains("?min"));
        assertEquals(3, soln.get("c").asLiteral().getInt());
        assertEquals(1, soln.get("min").asLiteral().getInt());
        assertEquals(5, soln.get("max").asLiteral().getInt());
    }
}