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:com.opengamma.financial.analytics.model.forex.option.black.FXOptionBlackPhiFunction.java

@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs,
        final ComputationTarget target, final Set<ValueRequirement> desiredValues)
        throws AsynchronousExecution {
    final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
    final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
    final Object curveSensitivitiesObject = inputs.getValue(ValueRequirementNames.FX_CURVE_SENSITIVITIES);
    if (curveSensitivitiesObject == null) {
        throw new OpenGammaRuntimeException("Could not get curve sensitivities");
    }/*from   w ww .  java  2  s.c om*/
    final String putCurrency = security.accept(ForexVisitors.getPutCurrencyVisitor()).getCode();
    final String putCurrencyCurve = desiredValue.getConstraint(FXOptionBlackFunction.PUT_CURVE);
    final String resultCurrency = FXOptionBlackSingleValuedFunction.getResultCurrency(target);
    final String fullCurveName = putCurrencyCurve + "_" + putCurrency;
    final MultipleCurrencyInterestRateCurveSensitivity curveSensitivities = (MultipleCurrencyInterestRateCurveSensitivity) curveSensitivitiesObject;
    final Map<String, List<DoublesPair>> sensitivitiesForCurrency = curveSensitivities
            .getSensitivity(Currency.of(resultCurrency)).getSensitivities();
    final ValueSpecification spec = new ValueSpecification(ValueRequirementNames.VALUE_PHI,
            target.toSpecification(), getResultProperties(target, desiredValue).get());
    final double phi = sensitivitiesForCurrency.get(fullCurveName).get(0).second;
    return Collections.singleton(new ComputedValue(spec, phi));
}

From source file:org.apache.beam.runners.core.construction.CombineTranslation.java

private static <K, InputT, AccumT> Coder<AccumT> extractAccumulatorCoder(
        GlobalCombineFn<InputT, AccumT, ?> combineFn,
        AppliedPTransform<PCollection<KV<K, InputT>>, ?, Combine.PerKey<K, InputT, ?>> transform)
        throws CannotProvideCoderException {
    KvCoder<K, InputT> inputCoder = (KvCoder<K, InputT>) ((PCollection<KV<K, InputT>>) Iterables
            .getOnlyElement(transform.getInputs().values())).getCoder();
    return AppliedCombineFn.withInputCoder(combineFn, transform.getPipeline().getCoderRegistry(), inputCoder,
            transform.getTransform().getSideInputs(),
            ((PCollection<?>) Iterables.getOnlyElement(transform.getOutputs().values())).getWindowingStrategy())
            .getAccumulatorCoder();//w  w  w. jav a  2  s.  c  o m
}

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

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

From source file:io.prestosql.sql.planner.plan.OutputNode.java

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

From source file:com.vmware.photon.controller.api.frontend.commands.steps.HostEnterMaintenanceModeStepCmd.java

@Override
protected void execute() throws ApiFeException, InterruptedException, RpcException {

    List<BaseEntity> entityList = step.getTransientResourceEntities();

    hostEntity = (HostEntity) Iterables.getOnlyElement(entityList);

    int vmCount = vmBackend.countVmsOnHost(hostEntity);
    if (vmCount > 0) {
        throw new HostHasVmsException(hostEntity.getId(), vmCount);
    }//  w  w w. j  av  a2 s  .c o m

    logger.info("Calling deployer to enter host to maintenance mode {}", hostEntity);
    ChangeHostModeTaskService.State serviceDocument = taskCommand.getDeployerXenonClient()
            .enterMaintenanceMode(hostEntity.getId());
    // pass remoteTaskId to XenonTaskStatusStepCmd
    for (StepEntity nextStep : taskCommand.getTask().getSteps()) {
        nextStep.createOrUpdateTransientResource(XenonTaskStatusStepCmd.REMOTE_TASK_LINK_RESOURCE_KEY,
                serviceDocument.documentSelfLink);
    }
}

From source file:org.kitesdk.data.hbase.DaoView.java

EntityScanner<E> newEntityScanner() {
    Iterable<MarkerRange> markerRanges = constraints.toKeyRanges();
    // TODO: combine all ranges into a single reader
    MarkerRange range = Iterables.getOnlyElement(markerRanges);
    return dataset.getDao().getScanner(toPartitionKey(range.getStart()), range.getStart().isInclusive(),
            toPartitionKey(range.getEnd()), range.getEnd().isInclusive());
}

From source file:org.mitre.openid.connect.service.impl.UUIDPairwiseIdentiferService.java

@Override
public String getIdentifier(UserInfo userInfo, ClientDetailsEntity client) {

    String sectorIdentifier = null;

    if (!Strings.isNullOrEmpty(client.getSectorIdentifierUri())) {
        UriComponents uri = UriComponentsBuilder.fromUriString(client.getSectorIdentifierUri()).build();
        sectorIdentifier = uri.getHost(); // calculate based on the host component only
    } else {//from   w ww .j  a  v a 2s .c  o m
        Set<String> redirectUris = client.getRedirectUris();
        UriComponents uri = UriComponentsBuilder.fromUriString(Iterables.getOnlyElement(redirectUris)).build();
        sectorIdentifier = uri.getHost(); // calculate based on the host of the only redirect URI
    }

    if (sectorIdentifier != null) {
        // if there's a sector identifier, use that for the lookup
        PairwiseIdentifier pairwise = pairwiseIdentifierRepository.getBySectorIdentifier(userInfo.getSub(),
                sectorIdentifier);

        if (pairwise == null) {
            // we don't have an identifier, need to make and save one

            pairwise = new PairwiseIdentifier();
            pairwise.setIdentifier(UUID.randomUUID().toString());
            pairwise.setUserSub(userInfo.getSub());
            pairwise.setSectorIdentifier(sectorIdentifier);

            pairwiseIdentifierRepository.save(pairwise);
        }

        return pairwise.getIdentifier();
    } else {

        return null;
    }
}

From source file:org.apache.beam.runners.core.AssignWindowsDoFn.java

@Override
@SuppressWarnings("unchecked")
public void processElement(final ProcessContext c) throws Exception {
    Collection<W> windows = ((WindowFn<T, W>) fn).assignWindows(((WindowFn<T, W>) fn).new AssignContext() {
        @Override/*from   w w w. j a  v a  2 s .  c o  m*/
        public T element() {
            return c.element();
        }

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

        @Override
        public BoundedWindow window() {
            return Iterables.getOnlyElement(c.windowingInternals().windows());
        }
    });

    c.windowingInternals().outputWindowedValue(c.element(), c.timestamp(), windows, PaneInfo.NO_FIRING);
}

From source file:com.opengamma.financial.analytics.model.forex.BloombergSecurityFXHistoricalTimeSeriesFunction.java

@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context,
        final ComputationTarget target, final ValueRequirement desiredValue) {
    final ValueProperties constraints = desiredValue.getConstraints();
    final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
    final Collection<Currency> securityCurrencies = FinancialSecurityUtils.getCurrencies(security,
            getSecuritySource());//from   www  . ja v a  2s.  co m
    final Set<String> resultCurrencies = constraints.getValues(ValuePropertyNames.CURRENCY);
    if (resultCurrencies != null && resultCurrencies.size() == 1) {
        final Currency desiredCurrency = Currency.of(Iterables.getOnlyElement(resultCurrencies));
        if (securityCurrencies.size() == 1) {
            final Currency securityCurrency = Iterables.getOnlyElement(securityCurrencies);
            ValueRequirement htsRequirement = getHTSRequirement(context, desiredCurrency, securityCurrency);
            return htsRequirement != null ? ImmutableSet.of(htsRequirement) : null;
        }
        final Set<ValueRequirement> requirements = new HashSet<ValueRequirement>();
        for (final Currency securityCurrency : securityCurrencies) {
            ValueRequirement htsRequirement = getHTSRequirement(context, desiredCurrency, securityCurrency);
            if (htsRequirement != null) {
                requirements.add(htsRequirement);
            }
        }
        return !requirements.isEmpty() ? requirements : null;
    }
    return null;
}

From source file:com.vmware.photon.controller.api.frontend.commands.steps.HostEnterSuspendedModeStepCmd.java

@Override
protected void execute() throws ExternalException {

    // Precondition check: only one host can be referenced.
    List<BaseEntity> entityList = step.getTransientResourceEntities();
    hostEntity = (HostEntity) Iterables.getOnlyElement(entityList);

    // Call deployer for action and error handling.
    logger.info("Calling deployer to suspend host {}", hostEntity);
    ChangeHostModeTaskService.State serviceDocument = taskCommand.getDeployerXenonClient()
            .enterSuspendedMode(hostEntity.getId());
    // pass remoteTaskId to XenonTaskStatusStepCmd
    for (StepEntity nextStep : taskCommand.getTask().getSteps()) {
        nextStep.createOrUpdateTransientResource(XenonTaskStatusStepCmd.REMOTE_TASK_LINK_RESOURCE_KEY,
                serviceDocument.documentSelfLink);
    }/*from   ww w .  j  a v  a2  s.com*/
}