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

Example 1 with DefaultDeleteQuery

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

the class DeleteQueryCommand method execute.

@Override
public void execute(final String[] args) throws ArgumentsException, ExecutionException {
    requireNonNull(args);
    // Parse the command line arguments.
    final RemoveParameters params = new RemoveParameters();
    try {
        new JCommander(params, args);
    } catch (final ParameterException e) {
        throw new ArgumentsException("Could not add a new query because of invalid command line parameters.", e);
    }
    // Create the Kafka backed QueryChangeLog.
    final String bootstrapServers = params.kafkaIP + ":" + params.kafkaPort;
    final String topic = KafkaTopics.queryChangeLogTopic(params.ryaInstance);
    final QueryChangeLog queryChangeLog = KafkaQueryChangeLogFactory.make(bootstrapServers, topic);
    // The DeleteQuery command doesn't use the scheduled service feature.
    final Scheduler scheduler = Scheduler.newFixedRateSchedule(0L, 5, TimeUnit.SECONDS);
    final QueryRepository queryRepo = new InMemoryQueryRepository(queryChangeLog, scheduler);
    // Execute the delete query command.
    try {
        final DeleteQuery deleteQuery = new DefaultDeleteQuery(queryRepo);
        try {
            deleteQuery.delete(UUID.fromString(params.queryId));
            System.out.println("Deleted query: " + params.queryId);
        } catch (final RyaStreamsException e) {
            System.err.println("Unable to delete query with ID: " + params.queryId);
            e.printStackTrace();
            System.exit(1);
        }
    } catch (final Exception e) {
        System.err.println("Problem encountered while closing the QueryRepository.");
        e.printStackTrace();
        System.exit(1);
    }
}

Example 2 with DefaultDeleteQuery

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

the class KafkaRyaStreamsClientFactory method make.

/**
 * Initialize a {@link RyaStreamsClient} that will interact with an instance of Rya Streams
 * that is backed by Kafka.
 *
 * @param ryaInstance - The name of the Rya Instance the client is connected to. (not null)
 * @param kafkaHostname - The hostname of the Kafka Broker.
 * @param kafkaPort - The port of the Kafka Broker.
 * @return The initialized commands.
 */
public static RyaStreamsClient make(final String ryaInstance, final String kafkaHostname, final int kafkaPort) {
    requireNonNull(ryaInstance);
    requireNonNull(kafkaHostname);
    // Setup Query Repository used by the Kafka Rya Streams subsystem.
    final Producer<?, QueryChange> queryProducer = makeProducer(kafkaHostname, kafkaPort, StringSerializer.class, QueryChangeSerializer.class);
    final Consumer<?, QueryChange> queryConsumer = fromStartConsumer(kafkaHostname, kafkaPort, StringDeserializer.class, QueryChangeDeserializer.class);
    final String changeLogTopic = KafkaTopics.queryChangeLogTopic(ryaInstance);
    final QueryChangeLog changeLog = new KafkaQueryChangeLog(queryProducer, queryConsumer, changeLogTopic);
    final QueryRepository queryRepo = new InMemoryQueryRepository(changeLog, SCHEDULER);
    // Create the Rya Streams client that is backed by a Kafka Query Change Log.
    return new RyaStreamsClient(new DefaultAddQuery(queryRepo), new DefaultGetQuery(queryRepo), new DefaultDeleteQuery(queryRepo), new KafkaGetQueryResultStream<>(kafkaHostname, "" + kafkaPort, VisibilityStatementDeserializer.class), new KafkaGetQueryResultStream<>(kafkaHostname, "" + kafkaPort, VisibilityBindingSetDeserializer.class), new DefaultListQueries(queryRepo), new DefaultStartQuery(queryRepo), new DefaultStopQuery(queryRepo)) {

        /**
         * Close the QueryRepository used by the returned client.
         */
        @Override
        public void close() {
            try {
                queryRepo.stopAndWait();
            } catch (final Exception e) {
                log.warn("Couldn't close a QueryRepository.", e);
            }
        }
    };
}