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

Introduction

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

Prototype

public static <T> T getOnlyElement(Iterable<T> iterable)

Source Link

Document

Returns the single element contained in iterable .

Usage

From source file:org.jclouds.aws.sqs.xml.RegexQueueHandler.java

@Override
public Queue apply(HttpResponse response) {
    return Iterables.getOnlyElement(parse(returnStringIf200.apply(response)));
}

From source file:org.apache.beam.runners.spark.translation.SparkAssignWindowFn.java

@Override
@SuppressWarnings("unchecked")
public WindowedValue<T> call(WindowedValue<T> windowedValue) throws Exception {
    final BoundedWindow boundedWindow = Iterables.getOnlyElement(windowedValue.getWindows());
    final T element = windowedValue.getValue();
    final Instant timestamp = windowedValue.getTimestamp();
    Collection<W> windows = ((WindowFn<T, W>) fn).assignWindows(((WindowFn<T, W>) fn).new AssignContext() {
        @Override// w  w w.ja  v a2  s.c  o m
        public T element() {
            return element;
        }

        @Override
        public Instant timestamp() {
            return timestamp;
        }

        @Override
        public BoundedWindow window() {
            return boundedWindow;
        }
    });
    return WindowedValue.of(element, timestamp, windows, PaneInfo.NO_FIRING);
}

From source file:org.jclouds.vagrant.functions.MachineToNodeMetadata.java

@Inject
MachineToNodeMetadata(@Memoized Supplier<Set<? extends Location>> locations,
        BoxConfig.Factory boxConfigFactory) {
    this.location = Iterables.getOnlyElement(locations.get());
    this.boxConfigFactory = boxConfigFactory;
}

From source file:com.b2international.snowowl.identity.IdentityBootstrap.java

@Override
public void init(SnowOwlConfiguration configuration, Environment env) throws Exception {
    final IdentityConfiguration conf = configuration.getModuleConfig(IdentityConfiguration.class);
    final List<IdentityProvider> providers = IdentityProvider.Factory.createProviders(env,
            conf.getProviderConfigurations());

    IdentityProvider identityProvider = null;
    if (providers.isEmpty()) {
        throw new SnowOwlApplication.InitializationException("No identity provider configured");
    } else if (providers.size() == 1) {
        identityProvider = Iterables.getOnlyElement(providers);
    } else {//from  w  w  w .j a  v  a  2  s.  co  m
        identityProvider = new MultiIdentityProvider(providers);
    }

    if (conf.isAdminParty()) {
        identityProvider = new AdminPartyIdentityProvider(identityProvider);
    }
    IdentityProvider.LOG.info("Configured identity providers [{}]", identityProvider.getInfo());
    env.services().registerService(IdentityProvider.class, identityProvider);
}

From source file:org.jclouds.gogrid.compute.strategy.GoGridGetNodeMetadataStrategy.java

@Override
public NodeMetadata getNode(String id) {
    try {/*from ww  w. j  av a  2 s  . c o  m*/
        Server server = Iterables
                .getOnlyElement(client.getServerServices().getServersById(new Long(checkNotNull(id, "id"))));
        return server == null ? null : serverToNodeMetadata.apply(server);
    } catch (NoSuchElementException e) {
        return null;
    }
}

From source file:com.google.jenkins.plugins.health.HealthCheckAction.java

/**
 * @return the {@link HealthCheckManager}.
 *///from w  w  w .  ja  v a2s .c o m
@Override
@VisibleForTesting
protected HealthCheckManager getDerivedPageManager() {
    return Iterables.getOnlyElement(Jenkins.getActiveInstance().getExtensionList(HealthCheckManager.class));
}

From source file:org.jclouds.cloudstack.compute.functions.ZoneToLocation.java

@Override
public Location apply(Zone zone) {
    return new LocationBuilder().scope(LocationScope.ZONE).metadata(ImmutableMap.<String, Object>of())
            .description(zone.getName()).id(zone.getId()).parent(Iterables.getOnlyElement(provider.get()))
            .build();/*from  w ww.  ja  va2 s  .c  om*/
}

From source file:com.cloudera.fts.avro.Ascii2AvroItemFn.java

@Override
public void process(Pair<String, Pair<Collection<String>, Collection<String>>> input,
        Emitter<AvroItem> emitter) {
    // The first collection is events, the second attributes: need to sort them on seq
    if (input.second().first().size() < 1)
        return;/*from   w  ww. jav a  2s  . c o  m*/
    String eventString = Iterables.getOnlyElement(input.second().first());
    splitFactory.setType(SplitFactory.Type.EVENT);
    AbstractAttribsRecord eventRecord = splitFactory.create(eventString);
    LOG.debug(input.first() + " event: " + eventRecord.toString());
    assert (eventRecord.getSerialNum().equals(input.first()));
    if (input.second().second().size() < 1)
        return;
    Set<AbstractAttribsRecord> attribs = new TreeSet<AbstractAttribsRecord>();
    splitFactory.setType(SplitFactory.Type.ATTRS);
    Map<CharSequence, CharSequence> map = Maps.newHashMap();
    for (String attrString : input.second().second()) {
        AbstractAttribsRecord attribsRecord = splitFactory.create(attrString);
        LOG.debug(input.first() + " attribs: " + attribsRecord.toString());
        assert (attribsRecord.getSerialNum().equals(input.first()));
        if (attribsRecord.getSeq() <= eventRecord.getSeq()) {
            attribs.add(attribsRecord);
        }
    }
    for (AbstractAttribsRecord attribsRecord : attribs) {
        map.put(attribsRecord.getAttrName(), attribsRecord.getAttrValue());
    }
    if (LOG.isDebugEnabled()) {
        for (Map.Entry<CharSequence, CharSequence> entry : map.entrySet()) {
            LOG.debug(input.first() + " map: " + entry.getKey() + "#" + entry.getValue());
        }
    }
    emitter.emit(AvroItem.newBuilder().setSerialNum(input.first()).setStatus(eventRecord.getStatus())
            .setSeq(eventRecord.getSeq()).setAttributes(map).build());
}

From source file:com.facebook.presto.sql.planner.plan.EnforceSingleRowNode.java

@Override
public PlanNode replaceChildren(List<PlanNode> newChildren) {
    return new EnforceSingleRowNode(getId(), Iterables.getOnlyElement(newChildren));
}

From source file:org.jclouds.ec2.compute.functions.RegionAndIdToImage.java

public Image apply(RegionAndName key) {
    try {/*www .  j a  va  2s .  com*/
        org.jclouds.ec2.domain.Image image = Iterables.getOnlyElement(
                sync.getAMIServices().describeImagesInRegion(key.getRegion(), imageIds(key.getName())));
        return parser.apply(image);
    } catch (NoSuchElementException e) {
        logger.debug(message(key, e));
        return null;
    } catch (ResourceNotFoundException e) {
        logger.debug(message(key, e));
        return null;
    } catch (Exception e) {
        logger.warn(e, message(key, e));
        return null;
    }
}