Example usage for com.google.common.collect Iterables tryFind

Introduction

In this page you can find the example usage for com.google.common.collect Iterables tryFind.

Prototype

public static <T> Optional<T> tryFind(Iterable<T> iterable, Predicate<? super T> predicate)

Source Link

Document

Returns an Optional containing the first element in iterable that satisfies the given predicate, if such an element exists.

Usage

From source file:com.axemblr.provisionr.commands.DestroyPoolCommand.java

@Override
protected Object doExecute() throws Exception {
    Optional<Provisionr> service = Iterables.tryFind(services, ProvisionrPredicates.withId(id));

    if (service.isPresent()) {
        service.get().destroyPool(businessKey);
    } else {//from w  w w  . j av a2  s.c  om
        throw new NoSuchElementException("No provisioning service found with id: " + id);
    }

    return null;
}

From source file:org.jclouds.openstack.marconi.v1.domain.MessageStream.java

@Override
public Optional<Object> nextMarker() {
    Optional<Link> nextMarkerLink = Iterables.tryFind(getLinks(), IS_NEXT_LINK);
    return nextMarkerLink.transform(TO_LIST_OPTIONS);
}

From source file:org.estatio.dom.communicationchannel.EmailAddresses.java

@Programmatic
public EmailAddress findByEmailAddress(final CommunicationChannelOwner owner, final String emailAddress) {

    final List<CommunicationChannelOwnerLink> links = communicationChannelOwnerLinks
            .findByOwnerAndCommunicationChannelType(owner, CommunicationChannelType.EMAIL_ADDRESS);
    final Iterable<EmailAddress> emailAddresses = Iterables.transform(links,
            CommunicationChannelOwnerLink.Functions.communicationChannel(EmailAddress.class));
    final Optional<EmailAddress> emailAddressIfFound = Iterables.tryFind(emailAddresses,
            EmailAddress.Predicates.equalTo(emailAddress));
    return emailAddressIfFound.orNull();
}

From source file:org.apache.drill.exec.store.AbstractRecordReader.java

public static boolean isStarQuery(Collection<SchemaPath> projected) {
    return Iterables
            .tryFind(Preconditions.checkNotNull(projected, COL_NULL_ERROR), new Predicate<SchemaPath>() {
                @Override//from  ww  w.  j  a  v a2s.com
                public boolean apply(SchemaPath path) {
                    return Preconditions.checkNotNull(path).equals(STAR_COLUMN);
                }
            }).isPresent();
}

From source file:net.seedboxer.core.logic.ContentManager.java

public void updateContents(User user, List<Content> toUpdate) {
    List<Content> userContents = contentDao.getAllContents(user);
    for (Content content : toUpdate) {
        Optional<Content> find = Iterables.tryFind(userContents, Predicates.equalTo(content));
        if (!find.isPresent()) {
            content.setUser(user);//from w w w  .ja  va 2  s  . co m
            contentDao.save(content);
            LOGGER.debug("New content {} for user {}", content.getName(), user.getId());
        }
    }
}

From source file:org.apache.brooklyn.entity.messaging.kafka.KafkaSupport.java

/**
 * Send a message to the {@link KafkaCluster} on the given topic.
 *///  w w  w. j a  v  a 2  s .  com
public void sendMessage(String topic, String message) {
    Optional<Entity> anyBrokerNodeInCluster = Iterables.tryFind(cluster.getCluster().getChildren(),
            Predicates.and(Predicates.instanceOf(KafkaBroker.class),
                    EntityPredicates.attributeEqualTo(KafkaBroker.SERVICE_UP, true)));
    if (anyBrokerNodeInCluster.isPresent()) {
        KafkaBroker broker = (KafkaBroker) anyBrokerNodeInCluster.get();

        Properties props = new Properties();

        props.put("metadata.broker.list",
                format("%s:%d", broker.getAttribute(KafkaBroker.HOSTNAME), broker.getKafkaPort()));
        props.put("bootstrap.servers",
                format("%s:%d", broker.getAttribute(KafkaBroker.HOSTNAME), broker.getKafkaPort()));
        props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
        props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

        Producer<String, String> producer = new KafkaProducer<>(props);
        ((KafkaZooKeeper) cluster.getZooKeeper()).createTopic(topic);

        ProducerRecord<String, String> data = new ProducerRecord<>(topic, message);
        producer.send(data);
        producer.close();
    } else {
        throw new InvalidParameterException("No kafka broker node found");
    }
}

From source file:org.isisaddons.app.kitchensink.dom.hierarchy.HierarchyObjects.java

@Action(semantics = SemanticsOf.SAFE)
@MemberOrder(sequence = "10")
public ParentObject findParent(@ParameterLayout(named = "Title") final String title) {
    final Optional<ParentObject> parentObjectIfAny = Iterables.tryFind(parentObjects.listAll(),
            input -> container.titleOf(input).contains(title));
    return parentObjectIfAny.orNull();
}

From source file:io.druid.query.topn.NumericTopNMetricSpec.java

@Override
public void verifyPreconditions(List<AggregatorFactory> aggregatorSpecs,
        List<PostAggregator> postAggregatorSpecs) {
    Preconditions.checkNotNull(metric, "metric can't be null");
    Preconditions.checkNotNull(aggregatorSpecs, "aggregations cannot be null");
    Preconditions.checkArgument(aggregatorSpecs.size() > 0, "Must have at least one AggregatorFactory");

    final AggregatorFactory aggregator = Iterables.tryFind(aggregatorSpecs, new Predicate<AggregatorFactory>() {
        @Override//from  w ww .  j av  a  2  s .  c o  m
        public boolean apply(AggregatorFactory input) {
            return input.getName().equals(metric);
        }
    }).orNull();

    final PostAggregator postAggregator = Iterables
            .tryFind(postAggregatorSpecs, new Predicate<PostAggregator>() {
                @Override
                public boolean apply(PostAggregator input) {
                    return input.getName().equals(metric);
                }
            }).orNull();

    Preconditions.checkArgument(aggregator != null || postAggregator != null,
            "Must have an AggregatorFactory or PostAggregator for metric[%s], gave[%s] and [%s]", metric,
            aggregatorSpecs, postAggregatorSpecs);
}

From source file:org.ow2.petals.cloud.manager.commands.paas.BaseCommand.java

/**
 * Get the deployment provider from its type
 *
 * @param type/*from  ww w.j a v a  2  s  .  c o m*/
 * @return
 */
protected DeploymentProvider getDeploymentProvider(final String type) {
    checkNotNull(type);
    Optional<DeploymentProvider> support = Iterables.tryFind(supportedRuntimes,
            new Predicate<DeploymentProvider>() {
                public boolean apply(DeploymentProvider input) {
                    return type.equalsIgnoreCase(input.getType());
                }
            });
    return support.orNull();
}

From source file:org.apache.brooklyn.cloudfoundry.location.domain.VcapServiceRegistry.java

private Optional<VcapService> tryFindVcapDescription(String instanceName) {
    return Iterables.tryFind(vcapServices.values(), new Predicate<VcapService>() {
        @Override/*  ww  w.ja  v a  2  s  . c  o  m*/
        public boolean apply(VcapService input) {
            return instanceName.equals(input.getInstanceName());
        }
    });
}