Examples with RunQuery org.apache.rya.streams.api.interactor.RunQuery used on opensource projects

Example 1 with RunQuery

use of org.apache.rya.streams.api.interactor.RunQuery in project incubator-rya by apache.

the class KafkaRunQueryIT method runQuery.

@Test
public void runQuery() throws Exception {
    // Setup some constant that will be used through the test.
    final String ryaInstance = UUID.randomUUID().toString();
    final String statementsTopic = KafkaTopics.statementsTopic(ryaInstance);
    // This query is completely in memory, so it doesn't need to be closed.
    final QueryRepository queries = new InMemoryQueryRepository(new InMemoryQueryChangeLog(), Scheduler.newFixedRateSchedule(0L, 5, TimeUnit.SECONDS));
    // Add the query to the query repository.
    final StreamsQuery sQuery = queries.add("SELECT * WHERE { ?person <urn:worksAt> ?business . }", true, false);
    final UUID queryId = sQuery.getQueryId();
    final String resultsTopic = KafkaTopics.queryResultsTopic(ryaInstance, queryId);
    // The thread that will run the tested interactor.
    final Thread testThread = new Thread() {

        @Override
        public void run() {
            final RunQuery runQuery = new KafkaRunQuery(kafka.getKafkaHostname(), kafka.getKafkaPort(), statementsTopic, resultsTopic, queries, new TopologyFactory());
            try {
                runQuery.run(queryId);
            } catch (final RyaStreamsException e) {
            // Do nothing. Test will still fail because the expected results will be missing.
            }
        }
    };
    // Create the topics.
    kafka.createTopic(statementsTopic);
    kafka.createTopic(resultsTopic);
    // Create the statements that will be loaded.
    final ValueFactory vf = new ValueFactoryImpl();
    final List<VisibilityStatement> statements = new ArrayList<>();
    statements.add(new VisibilityStatement(vf.createStatement(vf.createURI("urn:Alice"), vf.createURI("urn:worksAt"), vf.createURI("urn:BurgerJoint")), "a"));
    statements.add(new VisibilityStatement(vf.createStatement(vf.createURI("urn:Bob"), vf.createURI("urn:worksAt"), vf.createURI("urn:TacoShop")), "a"));
    statements.add(new VisibilityStatement(vf.createStatement(vf.createURI("urn:Charlie"), vf.createURI("urn:worksAt"), vf.createURI("urn:TacoShop")), "a"));
    // Create the expected results.
    final List<VisibilityBindingSet> expected = new ArrayList<>();
    MapBindingSet bs = new MapBindingSet();
    bs.addBinding("person", vf.createURI("urn:Alice"));
    bs.addBinding("business", vf.createURI("urn:BurgerJoint"));
    expected.add(new VisibilityBindingSet(bs, "a"));
    bs = new MapBindingSet();
    bs.addBinding("person", vf.createURI("urn:Bob"));
    bs.addBinding("business", vf.createURI("urn:TacoShop"));
    expected.add(new VisibilityBindingSet(bs, "a"));
    bs = new MapBindingSet();
    bs.addBinding("person", vf.createURI("urn:Charlie"));
    bs.addBinding("business", vf.createURI("urn:TacoShop"));
    expected.add(new VisibilityBindingSet(bs, "a"));
    // Execute the test. This will result in a set of results that were read from the results topic.
    final List<VisibilityBindingSet> results;
    try {
        // Wait for the program to start.
        testThread.start();
        Thread.sleep(2000);
        // Write some statements to the program.
        final LoadStatements loadStatements = new KafkaLoadStatements(statementsTopic, producer);
        loadStatements.fromCollection(statements);
        // Read the output of the streams program.
        consumer.subscribe(Lists.newArrayList(resultsTopic));
        results = KafkaTestUtil.pollForResults(500, 6, 3, consumer);
    } finally {
        // Tear down the test.
        testThread.interrupt();
        testThread.join(3000);
    }
    // Show the read results matched the expected ones.
    assertEquals(expected, results);
}