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:tiger.TreeScopeSizer.java

public TreeScopeSizer(Map<ComponentInfo, ComponentInfo> scopeTree, @Nullable ComponentInfo rootComponentInfo) {
    this.scopeTree = scopeTree;
    if (!scopeTree.isEmpty()) {
        rootComponentInfo = Iterables
                .getOnlyElement(Sets.difference(Sets.newHashSet(scopeTree.values()), scopeTree.keySet()));
    } else {//from  w  w w . j  a v  a 2  s  .  c  o m
        Preconditions.checkNotNull(rootComponentInfo);
    }
    scopeToDepthMap.put(rootComponentInfo, 0);
    largestScope = rootComponentInfo;
    for (ComponentInfo componentInfo : scopeTree.keySet()) {
        int depth = findTreeNodeDepth(scopeTree, componentInfo);
        scopeToDepthMap.put(componentInfo, depth);
    }

    int depth = 0;
    for (Map.Entry<ComponentInfo, Integer> entry : scopeToDepthMap.entrySet()) {
        int value = entry.getValue();
        if (value > depth) {
            depth = value;
        }
    }
    largestSize = depth;
    System.out.println(String.format("scopeTree: %s", scopeTree));
    System.out.println(String.format("scopeToDepthMap: %s", scopeToDepthMap));
}

From source file:org.jclouds.aws.ec2.predicates.VolumeAttached.java

public boolean apply(Attachment attachment) {
    logger.trace("looking for volume %s", attachment.getVolumeId());
    Volume volume = Iterables
            .getOnlyElement(client.describeVolumesInRegion(attachment.getRegion(), attachment.getVolumeId()));
    if (volume.getAttachments().size() == 0) {
        return false;
    }//from  w ww . j  ava2  s  .co  m
    Attachment lastAttachment = Sets.newTreeSet(volume.getAttachments()).last();
    logger.trace("%s: looking for status %s: currently: %s", lastAttachment, Attachment.Status.ATTACHED,
            lastAttachment.getStatus());
    return lastAttachment.getStatus() == Attachment.Status.ATTACHED;
}

From source file:com.urswolfer.gerrit.client.rest.http.projects.TagApiRestClient.java

@Override
public TagInfo get() throws RestApiException {
    JsonElement jsonElement = gerritRestClient.getRequest(tagUrl());
    return Iterables.getOnlyElement(tagInfoParser.parseTagInfos(jsonElement));
}

From source file:com.opengamma.financial.analytics.model.forex.option.callspreadblack.FXDigitalCallSpreadBlackGammaFunction.java

@Override
protected Set<ComputedValue> getResult(final InstrumentDerivative fxDigital,
        final ForexOptionDataBundle<?> data, final ComputationTarget target,
        final Set<ValueRequirement> desiredValues, final FunctionInputs inputs, final ValueSpecification spec,
        final FunctionExecutionContext executionContext) {
    final String spreadName = Iterables.getOnlyElement(desiredValues)
            .getConstraint(CalculationPropertyNamesAndValues.PROPERTY_CALL_SPREAD_VALUE);
    final double spread = Double.parseDouble(spreadName);
    final GammaValueCallSpreadBlackForexCalculator calculator = new GammaValueCallSpreadBlackForexCalculator(
            spread);//  www.  ja v  a 2  s  .com
    final CurrencyAmount result = fxDigital.accept(calculator, data);
    final double amount = result.getAmount();
    return Collections.singleton(new ComputedValue(spec, amount));
}

From source file:org.jclouds.ecs.compute.functions.OptionToLocation.java

@Inject
OptionToLocation(JustProvider justProvider,
        @Iso3166 Supplier<Map<String, Supplier<Set<String>>>> isoCodesByIdSupplier) {
    this.provider = Iterables.getOnlyElement(justProvider.get());
    this.isoCodesByIdSupplier = checkNotNull(isoCodesByIdSupplier, "isoCodesByIdSupplier");
}

From source file:org.apache.aurora.scheduler.cron.quartz.CronSchedulerImpl.java

@Override
public Optional<CrontabEntry> getSchedule(IJobKey jobKey) throws IllegalStateException {
    requireNonNull(jobKey);//from  ww  w.j  a  v a2  s.com

    try {
        return Optional
                .of(Iterables.getOnlyElement(FluentIterable.from(scheduler.getTriggersOfJob(jobKey(jobKey)))
                        .filter(CronTrigger.class).transform(Quartz::crontabEntry)));
    } catch (SchedulerException e) {
        LOG.error("Error reading job " + JobKeys.canonicalString(jobKey) + " cronExpression Quartz: " + e, e);
        return Optional.absent();
    }
}

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

public Image apply(RegionAndName key) {
    try {//w ww  . ja va  2s.  c o  m
        org.jclouds.aws.ec2.domain.Image image = Iterables.getOnlyElement(
                sync.getAMIServices().describeImagesInRegion(key.getRegion(), imageIds(key.getName())));
        return parser.apply(image);
    } catch (Exception e) {
        logger.warn(e, "could not find image %s/%s: %s", key.getRegion(), key.getName(), e.getMessage());
        return null;
    }
}

From source file:org.jclouds.glesys.compute.functions.DatacenterToLocation.java

@Override
public Location apply(String datacenter) {
    return new LocationBuilder().scope(LocationScope.ZONE).description(datacenter).id(datacenter)
            // TODO: iso3166Codes
            .parent(Iterables.getOnlyElement(provider.get())).build();
}

From source file:org.jclouds.ec2.predicates.VolumeDetached.java

public boolean apply(Attachment attachment) {
    logger.trace("looking for volume %s", attachment.getVolumeId());
    Volume volume = Iterables
            .getOnlyElement(client.describeVolumesInRegion(attachment.getRegion(), attachment.getVolumeId()));

    /*If attachment size is 0 volume is detached for sure.*/
    if (volume.getAttachments().size() == 0) {
        return true;
    }/*from w w  w . j a va2 s.  c  om*/

    /* But if attachment size is > 0, then the attachment could be in any state.
       * So we need to check if the status is DETACHED (return true) or not (return false).
       */
    Attachment lastAttachment = getLast(volume.getAttachments());
    logger.trace("%s: looking for status %s: currently: %s", lastAttachment, Attachment.Status.DETACHED,
            lastAttachment.getStatus());
    return lastAttachment.getStatus() == Attachment.Status.DETACHED;
}

From source file:com.opengamma.financial.analytics.model.forex.option.callspreadblack.FXDigitalCallSpreadBlackGammaSpotFunction.java

@Override
protected Set<ComputedValue> getResult(final InstrumentDerivative fxDigital,
        final ForexOptionDataBundle<?> data, final ComputationTarget target,
        final Set<ValueRequirement> desiredValues, final FunctionInputs inputs, final ValueSpecification spec,
        final FunctionExecutionContext executionContext) {
    final String spreadName = Iterables.getOnlyElement(desiredValues)
            .getConstraint(CalculationPropertyNamesAndValues.PROPERTY_CALL_SPREAD_VALUE);
    final double spread = Double.parseDouble(spreadName);
    final GammaSpotCallSpreadBlackForexCalculator calculator = new GammaSpotCallSpreadBlackForexCalculator(
            spread);//from w w w  .j ava  2  s. c o  m
    final CurrencyAmount result = fxDigital.accept(calculator, data);
    final double gammaSpot = result.getAmount() / 100.0; // FIXME: the 100 should be removed when the scaling is available
    return Collections.singleton(new ComputedValue(spec, gammaSpot));
}