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

List of usage examples for com.google.common.collect Iterables getOnlyElement

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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.discounting.DiscountingParRateFunction.java

@Override
public CompiledFunctionDefinition compile(final FunctionCompilationContext context, final Instant atInstant) {
    return new DiscountingCompiledFunction(getTargetToDefinitionConverter(context),
            getDefinitionToDerivativeConverter(context), false) {

        @Override/*  w  w w. java  2  s .co m*/
        protected Set<ComputedValue> getValues(final FunctionExecutionContext executionContext,
                final FunctionInputs inputs, final ComputationTarget target,
                final Set<ValueRequirement> desiredValues, final InstrumentDerivative derivative,
                final FXMatrix fxMatrix) {
            final MulticurveProviderInterface data = getMergedProviders(inputs, fxMatrix);
            final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
            final ValueProperties properties = desiredValue.getConstraints().copy().get();
            final double parRate = derivative.accept(CALCULATOR, data);
            final ValueSpecification spec = new ValueSpecification(PAR_RATE, target.toSpecification(),
                    properties);
            return Collections.singleton(new ComputedValue(spec, parRate));
        }
    };
}

From source file:org.apache.druid.indexing.common.task.MoveTask.java

@Override
public TaskStatus run(TaskToolbox toolbox) throws Exception {
    // Confirm we have a lock (will throw if there isn't exactly one element)
    final TaskLock myLock = Iterables.getOnlyElement(getTaskLocks(toolbox.getTaskActionClient()));

    if (!myLock.getDataSource().equals(getDataSource())) {
        throw new ISE("WTF?! Lock dataSource[%s] != task dataSource[%s]", myLock.getDataSource(),
                getDataSource());/*from w w  w  .j a v  a 2 s  . c o m*/
    }

    if (!myLock.getInterval().equals(getInterval())) {
        throw new ISE("WTF?! Lock interval[%s] != task interval[%s]", myLock.getInterval(), getInterval());
    }

    // List unused segments
    final List<DataSegment> unusedSegments = toolbox.getTaskActionClient()
            .submit(new SegmentListUnusedAction(myLock.getDataSource(), myLock.getInterval()));

    // Verify none of these segments have versions > lock version
    for (final DataSegment unusedSegment : unusedSegments) {
        if (unusedSegment.getVersion().compareTo(myLock.getVersion()) > 0) {
            throw new ISE("WTF?! Unused segment[%s] has version[%s] > task version[%s]",
                    unusedSegment.getIdentifier(), unusedSegment.getVersion(), myLock.getVersion());
        }

        log.info("OK to move segment: %s", unusedSegment.getIdentifier());
    }

    // Move segments
    for (DataSegment segment : unusedSegments) {
        final DataSegment movedSegment = toolbox.getDataSegmentMover().move(segment, targetLoadSpec);
        toolbox.getTaskActionClient().submit(new SegmentMetadataUpdateAction(ImmutableSet.of(movedSegment)));
    }

    return TaskStatus.success(getId());
}

From source file:eu.interedition.text.xml.module.CLIXAnnotationXMLTransformerModule.java

@Override
public void start(XMLTransformer transformer, XMLEntity entity) {
    super.start(transformer, entity);

    final ObjectNode entityAttributes = entity.getAttributes();
    final JsonNode startId = entityAttributes.remove(TextConstants.CLIX_START_ATTR_NAME.toString());
    final JsonNode endId = entityAttributes.remove(TextConstants.CLIX_END_ATTR_NAME.toString());
    if (startId == null && endId == null) {
        return;/*ww  w.ja v  a  2 s . com*/
    }

    final long textOffset = transformer.getTextOffset();

    if (startId != null) {
        annotations.put(startId.toString(), new Annotation(entity.getName(),
                new TextTarget(transformer.getTarget(), textOffset, textOffset), entityAttributes));
    }
    if (endId != null) {
        final Annotation a = annotations.remove(endId.toString());
        if (a != null) {
            Iterables.getOnlyElement(a.getTargets()).setEnd(textOffset);
            add(transformer, a);
        }
    }
}

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

@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context,
        final ComputationTarget target, final Map<ValueSpecification, ValueRequirement> inputs) {
    String currencyPairConfigName = null;
    String payCurveName = null;/*from   w  ww .j  a  va2s . co m*/
    String payCurveCalculationConfig = null;
    String receiveCurveName = null;
    String receiveCurveCalculationConfig = null;
    for (final Map.Entry<ValueSpecification, ValueRequirement> entry : inputs.entrySet()) {
        final ValueSpecification specification = entry.getKey();
        final ValueRequirement requirement = entry.getValue();
        if (specification.getValueName().equals(ValueRequirementNames.CURRENCY_PAIRS)) {
            currencyPairConfigName = specification.getProperty(CurrencyPairsFunction.CURRENCY_PAIRS_NAME);
        } else if (requirement.getValueName().equals(ValueRequirementNames.YIELD_CURVE)) {
            final ValueProperties constraints = requirement.getConstraints();
            if (constraints.getProperties().contains(ValuePropertyNames.PAY_CURVE)) {
                payCurveName = Iterables.getOnlyElement(constraints.getValues(ValuePropertyNames.CURVE));
                payCurveCalculationConfig = Iterables
                        .getOnlyElement(constraints.getValues(ValuePropertyNames.CURVE_CALCULATION_CONFIG));
            } else if (constraints.getProperties().contains(ValuePropertyNames.RECEIVE_CURVE)) {
                receiveCurveName = Iterables.getOnlyElement(constraints.getValues(ValuePropertyNames.CURVE));
                receiveCurveCalculationConfig = Iterables
                        .getOnlyElement(constraints.getValues(ValuePropertyNames.CURVE_CALCULATION_CONFIG));
            }
        }
    }
    assert currencyPairConfigName != null;
    final ConfigSource configSource = OpenGammaCompilationContext.getConfigSource(context);
    final ConfigDBCurrencyPairsSource currencyPairsSource = new ConfigDBCurrencyPairsSource(configSource);
    final CurrencyPairs baseQuotePairs = currencyPairsSource.getCurrencyPairs(currencyPairConfigName);
    final FinancialSecurity security = (FinancialSecurity) target.getSecurity();
    final Currency putCurrency = security.accept(ForexVisitors.getPayCurrencyVisitor());
    final Currency callCurrency = security.accept(ForexVisitors.getReceiveCurrencyVisitor());
    final CurrencyPair baseQuotePair = baseQuotePairs.getCurrencyPair(putCurrency, callCurrency);
    if (baseQuotePair == null) {
        throw new OpenGammaRuntimeException(
                "Could not get base/quote pair for currency pair (" + putCurrency + ", " + callCurrency + ")");
    }
    final ValueSpecification resultSpec = new ValueSpecification(getValueRequirementName(),
            target.toSpecification(), getResultProperties(target, baseQuotePair, payCurveName, receiveCurveName,
                    payCurveCalculationConfig, receiveCurveCalculationConfig).get());
    return Collections.singleton(resultSpec);
}

From source file:co.cask.cdap.operations.hdfs.HDFSNodes.java

@Nullable
private String getNameService() {
    Collection<String> nameservices = conf.getTrimmedStringCollection(DFSConfigKeys.DFS_NAMESERVICES);
    if (nameservices.isEmpty()) {
        return null;
    }//w w w .  j a va  2  s  .  com
    if (1 == nameservices.size()) {
        return Iterables.getOnlyElement(nameservices);
    }
    throw new IllegalStateException(
            "Found multiple nameservices configured in HDFS. CDAP currently does not support "
                    + "HDFS Federation.");
}

From source file:com.opengamma.financial.analytics.model.credit.isda.cds.StandardVanillaParallelCS01CDSFunction.java

@Override
protected Set<ComputedValue> getComputedValue(final CreditDefaultSwapDefinition definition,
        final ISDACompliantYieldCurve yieldCurve, final ZonedDateTime[] times, final double[] marketSpreads,
        final ZonedDateTime valuationDate, final ComputationTarget target, final ValueProperties properties,
        final FunctionInputs inputs, ISDACompliantCreditCurve hazardCurve, CDSAnalytic analytic) {
    //TODO: bump type
    Double bump = Double.valueOf(Iterables.getOnlyElement(
            properties.getValues(CreditInstrumentPropertyNamesAndValues.PROPERTY_SPREAD_CURVE_BUMP)));
    double cs01 = parallelCS01(definition, yieldCurve, times, marketSpreads, analytic, bump * 1e-4);

    final ValueSpecification spec = new ValueSpecification(ValueRequirementNames.CS01, target.toSpecification(),
            properties);/*from w w  w  . j  av  a2s .com*/
    return Collections.singleton(new ComputedValue(spec, cs01));
}

From source file:org.immutables.generator.processor.Implicits.java

private TypeMirror getTargetTypeArgument(TypeMirror facetTypeSupertype) {
    TypeMirror typeArgument = Iterables
            .getOnlyElement(checkDeclaredType(facetTypeSupertype).getTypeArguments());
    if (typeArgument instanceof TypeVariable) {
        return ((TypeVariable) typeArgument).getUpperBound();
    }/* w  w w .ja va  2  s . c  om*/
    return typeArgument;
}

From source file:org.opendaylight.protocol.bgp.flowspec.l3vpn.AbstractFlowspecL3vpnRIBSupport.java

@Nonnull
@Override/* w w w .java2s  .  c  o m*/
protected DestinationType buildDestination(@Nonnull final Collection<MapEntryNode> routes) {
    final MapEntryNode routesCont = Iterables.getOnlyElement(routes);
    final PathId pathId = PathIdUtil.buildPathId(routesCont, routePathIdNid());
    final RouteDistinguisher rd = extractRouteDistinguisher(routesCont, this.routeDistinguisherNID);
    return this.nlriParser.createAdvertizedRoutesDestinationType(
            new Object[] { rd, this.nlriParser.extractFlowspec(routesCont) }, pathId);
}

From source file:eu.interedition.text.rdbms.RelationalNameRepository.java

public Name get(Name name) {
    return Iterables.getOnlyElement(get(singleton(name)));
}

From source file:com.google.errorprone.bugpatterns.time.JavaDurationWithSeconds.java

@Override
public Description matchMethodInvocation(MethodInvocationTree tree, VisitorState state) {
    if (!MATCHER.matches(tree, state)) {
        return Description.NO_MATCH;
    }//from w  w  w  . j  a va 2s . c  o  m

    SuggestedFix.Builder builder = SuggestedFix.builder();
    ExpressionTree secondsArg = Iterables.getOnlyElement(tree.getArguments());
    ExpressionTree receiver = ASTHelpers.getReceiver(tree);
    String replacement = SuggestedFixes.qualifyType(state, builder, "java.time.Duration") + ".ofSeconds("
            + state.getSourceForNode(secondsArg) + ", " + state.getSourceForNode(receiver) + ".getNano())";

    builder.replace(tree, replacement);
    return describeMatch(tree, builder.build());
}