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.hullwhitediscounting.HullWhiteConvexityAdjustmentFunction.java

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

        @Override/*from  ww  w  .  ja  v a  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 HullWhiteOneFactorProviderInterface data = getMergedProviders(inputs, fxMatrix);
            final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
            final double convexityAdjustment = derivative.accept(CALCULATOR, data);
            final ValueProperties properties = desiredValue.getConstraints().copy().get();
            final ValueSpecification spec = new ValueSpecification(CONVEXITY_ADJUSTMENT,
                    target.toSpecification(), properties);
            return Collections.singleton(new ComputedValue(spec, convexityAdjustment));
        }

        @Override
        public boolean canApplyTo(final FunctionCompilationContext compilationContext,
                final ComputationTarget target) {
            final Security security = target.getTrade().getSecurity();
            return security instanceof DeliverableSwapFutureSecurity
                    || security instanceof InterestRateFutureSecurity;
        }

    };
}

From source file:com.opengamma.financial.analytics.model.fx.FXForwardPointsFCNSFunction.java

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

        @Override/*from  ww  w  .  jav a  2 s . c om*/
        protected Set<ComputedValue> getValues(final FunctionInputs inputs, final ComputationTarget target,
                final Set<ValueRequirement> desiredValues, final Forex forex, final FXMatrix fxMatrix,
                final ZonedDateTime now) {
            final MulticurveProviderInterface data = getMergedProviders(inputs, fxMatrix);
            final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
            final String fxForwardCurveName = desiredValue.getConstraint(FORWARD_CURVE_NAME);
            final DoublesCurve forwardPoints = getForwardPoints(inputs, fxForwardCurveName, now);
            final CurrencyPairs pairs = (CurrencyPairs) inputs.getValue(CURRENCY_PAIRS);
            final Pair<Currency, Currency> ccyPair;
            final Currency currency1 = forex.getCurrency1();
            final Currency currency2 = forex.getCurrency2();
            if (currency1.equals(pairs.getCurrencyPair(currency1, currency2).getBase())) {
                ccyPair = Pair.of(currency1, currency2);
            } else {
                ccyPair = Pair.of(currency2, currency1);
            }
            final double[] sensitivities = CALCULATOR.presentValueForwardPointsSensitivity(forex, data,
                    forwardPoints, ccyPair);
            final CurveDefinition definition = (CurveDefinition) inputs
                    .getValue(new ValueRequirement(CURVE_DEFINITION, ComputationTargetSpecification.NULL,
                            ValueProperties.with(CURVE, fxForwardCurveName).get()));
            final DoubleLabelledMatrix1D matrix = MultiCurveUtils
                    .getLabelledMatrix(new DoubleMatrix1D(sensitivities), definition);
            final ValueProperties properties = desiredValue.getConstraints().copy().get();
            final ValueSpecification spec = new ValueSpecification(FX_FORWARD_POINTS_NODE_SENSITIVITIES,
                    target.toSpecification(), properties);
            return Collections.singleton(new ComputedValue(spec, matrix));
        }
    };
}

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

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

From source file:edu.buaa.satla.analysis.core.programcounter.ProgramCounterCPA.java

@Override
public AbstractState getInitialState(CFANode pNode) {
    // Try to get all possible program counter values
    SingleLoopHead singleLoopHead = null;
    if (pNode instanceof SingleLoopHead) {
        singleLoopHead = (SingleLoopHead) pNode;
    } else if (cfa.getLoopStructure().isPresent()) {
        LoopStructure loopStructure = cfa.getLoopStructure().get();
        if (loopStructure.getCount() == 1) {
            Loop singleLoop = Iterables.getOnlyElement(loopStructure.getAllLoops());
            if (singleLoop.getLoopHeads().size() == 1) {
                CFANode loopHead = Iterables.getOnlyElement(singleLoop.getLoopHeads());
                if (loopHead instanceof SingleLoopHead) {
                    singleLoopHead = (SingleLoopHead) loopHead;
                }//from w w w  .  ja va  2 s  . c o m
            }
        }
    }

    if (singleLoopHead != null) {
        FluentIterable<BigInteger> potentialValues = FluentIterable
                .from(singleLoopHead.getProgramCounterValues()).transform(new Function<Integer, BigInteger>() {

                    @Override
                    public BigInteger apply(Integer pArg0) {
                        return BigInteger.valueOf(pArg0);
                    }

                });

        if (!potentialValues.isEmpty()) {
            return ProgramCounterState.getStateForValues(potentialValues);
        }
    }

    // If the possible program counter values cannot be determined, return TOP
    return ProgramCounterState.getTopState();
}

From source file:grakn.core.graql.reasoner.query.ReasonerAtomicQuery.java

ReasonerAtomicQuery(Conjunction<Statement> pattern, TransactionOLTP tx) {
    super(pattern, tx);
    this.atom = Iterables.getOnlyElement(selectAtoms()::iterator);
}

From source file:org.jclouds.filesystem.integration.FilesystemContainerIntegrationTestDisabled.java

@Test(groups = { "integration", "live" })
public void testNotWithDetails() throws InterruptedException {

    String key = "hello";

    // NOTE all metadata in jclouds comes out as lowercase, in an effort to normalize the
    // providers.
    Blob object = view.getBlobStore().blobBuilder(key).userMetadata(ImmutableMap.of("Adrian", "powderpuff"))
            .payload(TEST_STRING).contentType(MediaType.TEXT_PLAIN).build();
    String containerName = getContainerName();
    try {/* w ww.  j av  a  2  s.  c  om*/
        addBlobToContainer(containerName, object);
        validateContent(containerName, key);

        PageSet<? extends StorageMetadata> container = view.getBlobStore().list(containerName, maxResults(1));

        BlobMetadata metadata = (BlobMetadata) Iterables.getOnlyElement(container);
        // transient container should be lenient and not return metadata on undetailed listing.

        assertEquals(metadata.getUserMetadata().size(), 0);

    } finally {
        returnContainer(containerName);
    }
}

From source file:com.b2international.index.lucene.QueryBuilderBase.java

private Query build(final Occur occur, Iterable<Query> queries) {
    final int size = Iterables.size(queries);
    checkArgument(size > 0, "At least one clause must be specified to build a query");
    if (size == 1) {
        return Iterables.getOnlyElement(queries);
    } else {/*w  w  w  .j  av a2 s .c  o  m*/
        final BooleanQuery.Builder query = new BooleanQuery.Builder();
        for (Query q : queries) {
            query.add(q, occur);
        }
        return query.build();
    }
}

From source file:org.sosy_lab.cpachecker.cpa.value.refiner.ValueAnalysisStrongestPostOperator.java

@Override
public Optional<ValueAnalysisState> getStrongestPost(final ValueAnalysisState pOrigin,
        final Precision pPrecision, final CFAEdge pOperation) throws CPAException {

    final Collection<ValueAnalysisState> successors = transfer.getAbstractSuccessorsForEdge(pOrigin, pPrecision,
            pOperation);/*from w  w  w.j a  va 2 s  . c  o m*/

    if (successors.isEmpty()) {
        return Optional.absent();

    } else {
        return Optional.of(Iterables.getOnlyElement(successors));
    }
}

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

@Override
public PlanNode replaceChildren(List<PlanNode> newChildren) {
    return new StatisticsWriterNode(getId(), Iterables.getOnlyElement(newChildren), target, rowCountSymbol,
            rowCountEnabled, descriptor);
}

From source file:reconcile.drivers.CorefAnnotator.java

public void annotate(Document doc, String outputAnnotationSetName) throws IOException {
    Clusterer.printClusteringAsAnnotationSet(doc, doc.readClusterFile(), outputAnnotationSetName);

    // remove singletons
    AnnotationSet coref = doc.getAnnotationSet(outputAnnotationSetName);
    Map<String, Set<String>> map = new HashMap<String, Set<String>>();
    Map<String, Annotation> aMap = new HashMap<String, Annotation>();
    for (Annotation a : coref) {
        String key = a.getAttribute(Constants.CLUSTER_ID);
        String val = a.getAttribute(Constants.CE_ID);
        MapUtil.addToMapSet(map, key, val);
        aMap.put(key, a);//from  w ww  .j  a  va2s.  c om
    }
    for (String key : map.keySet()) {
        Set<String> vals = map.get(key);
        if (vals.size() == 1) {
            String val = Iterables.getOnlyElement(vals);
            Annotation a = aMap.get(val);
            boolean success = coref.remove(a);
            if (!success) {
                System.out.println("failed to remove: " + a);
            }
        }
    }
    doc.writeAnnotationSet(coref);
}