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.black.BlackDiscountingImpliedVolatilityIRFutureOptionFunction.java

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

        @Override/*  w ww  . ja v  a 2 s . c  om*/
        protected Set<ComputedValue> getValues(final FunctionExecutionContext executionContext,
                final FunctionInputs inputs, final ComputationTarget target,
                final Set<ValueRequirement> desiredValues, final InstrumentDerivative derivative,
                final FXMatrix fxMatrix) {
            final BlackSTIRFuturesSmileProviderInterface blackData = getBlackSurface(executionContext, inputs,
                    target, fxMatrix);
            final double impliedVolatility = derivative.accept(CALCULATOR, blackData);
            final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
            final ValueProperties properties = desiredValue.getConstraints().copy().get();
            final ValueSpecification spec = new ValueSpecification(SECURITY_IMPLIED_VOLATILITY,
                    target.toSpecification(), properties);
            return Collections.singleton(new ComputedValue(spec, impliedVolatility));
        }

    };
}

From source file:org.sleuthkit.autopsy.timeline.ui.detailview.EventStripeNode.java

/**
 * Constructor/*from ww w . j a v a2  s.com*/
 *
 * @param chartLane   the DetailsChartLane this node belongs to
 * @param eventStripe the EventStripe represented by this node
 * @param parentNode  the EventClusterNode that is the parent of this node.
 */
EventStripeNode(DetailsChartLane<?> chartLane, EventStripe eventStripe, EventClusterNode parentNode) {
    super(chartLane, eventStripe, parentNode);

    //setup description label
    descrLabel.setTextOverrun(OverrunStyle.CENTER_ELLIPSIS);
    descrLabel.setPrefWidth(USE_COMPUTED_SIZE);

    setMinHeight(24);
    setAlignment(subNodePane, Pos.BOTTOM_LEFT);

    if (eventStripe.getClusters().size() > 1) {
        for (EventCluster cluster : eventStripe.getClusters()) {
            subNodes.add(createChildNode(cluster.withParent(eventStripe)));
        }
        //stack componenets vertically
        getChildren().addAll(new VBox(infoHBox, subNodePane));
    } else {
        //if the stripe only has one cluster, use alternate simpler layout
        EventNodeBase<?> childNode;
        EventCluster cluster = Iterables.getOnlyElement(eventStripe.getClusters()).withParent(eventStripe);
        if (cluster.getEventIDs().size() == 1) {
            childNode = createChildNode(cluster);
        } else {
            //if the cluster has more than one event, add the clusters controls to this stripe node directly.
            EventClusterNode eventClusterNode = (EventClusterNode) createChildNode(cluster);
            eventClusterNode.installActionButtons();
            controlsHBox.getChildren().addAll(eventClusterNode.getNewCollapseButton(),
                    eventClusterNode.getNewExpandButton());
            eventClusterNode.infoHBox.getChildren().remove(eventClusterNode.countLabel);
            childNode = eventClusterNode;
        }

        //hide the cluster description
        childNode.setDescriptionVisibility(DescriptionVisibility.HIDDEN);

        subNodes.add(childNode);
        //stack componenet in z rather than vertically
        getChildren().addAll(infoHBox, subNodePane);
    }
}