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:io.prestosql.sql.planner.plan.DeleteNode.java

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

From source file:org.sosy_lab.cpachecker.util.templates.Template.java

private static Kind getKind(LinearExpression<CIdExpression> expr) {
    int s = expr.size();
    if (s == 1 && Objects.equals(Iterables.getOnlyElement(expr).getValue(), Rational.ONE)) {

        return Kind.UPPER_BOUND;
    } else if (s == 1 && Objects.equals(Iterables.getOnlyElement(expr).getValue(), Rational.NEG_ONE)) {

        return Kind.NEG_LOWER_BOUND;
    } else if (s == 2) {
        Iterator<Entry<CIdExpression, Rational>> it = expr.iterator();
        Rational a = it.next().getValue();
        Rational b = it.next().getValue();
        if (Objects.equals(a, Rational.ONE) && Objects.equals(b, Rational.ONE)) {
            return Kind.SUM;
        } else if (Objects.equals(a, Rational.NEG_ONE) && Objects.equals(b, Rational.NEG_ONE)) {
            return Kind.NEG_SUM_LOWER_BOUND;
        } else if ((Objects.equals(a, Rational.ONE) && Objects.equals(b, Rational.NEG_ONE))
                || (Objects.equals(a, Rational.NEG_ONE) && Objects.equals(b, Rational.ONE))) {
            return Kind.DIFFERENCE;
        }//w  w  w  .java  2  s  .  c o m
    }
    return Kind.COMPLEX;
}

From source file:com.opengamma.financial.analytics.model.pnl.PnLPeriodTranslationFunction.java

@Override
public Set<ValueRequirement> getRequirements(FunctionCompilationContext context, ComputationTarget target,
        ValueRequirement desiredValue) {
    Set<String> samplingPeriods = desiredValue.getConstraints().getValues(ValuePropertyNames.SAMPLING_PERIOD);
    if (samplingPeriods == null || samplingPeriods.size() != 1) {
        return null;
    }/*from   w w w.  j a va  2  s  .  c o  m*/
    String samplingPeriod = Iterables.getOnlyElement(samplingPeriods);
    DateConstraint start = DateConstraint.parse("-" + samplingPeriod);
    ValueProperties inputConstraints = desiredValue.getConstraints().copy()
            .withOptional(ValuePropertyNames.SAMPLING_PERIOD)
            .with(HistoricalTimeSeriesFunctionUtils.START_DATE_PROPERTY, start.toString())
            .with(HistoricalTimeSeriesFunctionUtils.END_DATE_PROPERTY, DateConstraint.VALUATION_TIME.toString())
            .get();
    return ImmutableSet
            .of(new ValueRequirement(_valueRequirementName, target.toSpecification(), inputConstraints));
}

From source file:com.github.nethad.clustermeister.provisioning.jppf.JPPFManagementByJobsClient.java

public Properties getJPPFConfig(String host, int port) {
    JPPFJob job = new JPPFJob();
    try {/*from w  w w  . j  av a 2  s  .co m*/
        job.addTask(new JPPFConfigReaderTask(), host, port);
    } catch (JPPFException ex) {
        throw new RuntimeException(ex);
    }
    job.getSLA().setMaxNodes(1);
    job.setBlocking(true);
    job.getSLA().setSuspended(false);
    List<JPPFTask> results = Collections.EMPTY_LIST;
    try {
        results = jPPFClient.submit(job);
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }

    JPPFTask task = Iterables.getOnlyElement(results);
    return (Properties) task.getResult();
}

From source file:org.jclouds.openstack.marconi.v1.options.StreamMessagesOptions.java

/**
 * @return The String representation of the marker for these StreamMessagesOptions.
 *//*from w  ww . j  a  v a2 s .c  o m*/
public String getMarker() {
    return Iterables.getOnlyElement(queryParameters.get("marker"));
}

From source file:org.apache.drill.exec.ref.rops.JoinROP.java

@Override
protected void setupIterators(IteratorRegistry builder) {
    left = Iterables.getOnlyElement(builder.getOperator(config.getLeft()));
    right = Iterables.getOnlyElement(builder.getOperator(config.getRight()));
}

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

@Override
public PlanNode visitDistinctLimit(DistinctLimitNode node, List<PlanNode> newChildren) {
    return new DistinctLimitNode(node.getId(), Iterables.getOnlyElement(newChildren), node.getLimit(),
            node.getHashSymbol());/*from ww w .  j av  a  2  s  .  c  om*/
}

From source file:grakn.core.graql.gremlin.fragment.LabelFragment.java

@Override
public GraphTraversal<Vertex, ? extends Element> applyTraversalInner(
        GraphTraversal<Vertex, ? extends Element> traversal, TransactionOLTP tx, Collection<Variable> vars) {

    Set<Integer> labelIds = labels().stream().map(label -> tx.convertToId(label).getValue()).collect(toSet());

    if (labelIds.size() == 1) {
        int labelId = Iterables.getOnlyElement(labelIds);
        return traversal.has(LABEL_ID.name(), labelId);
    } else {//from  w w  w .j a  v  a2 s .  co  m
        return traversal.has(LABEL_ID.name(), P.within(labelIds));
    }
}

From source file:com.groupon.jenkins.dynamic.buildconfiguration.PluginsSection.java

public List<DotCiPluginAdapter> getPlugins() {
    if (getConfigValue().isEmpty()) {
        return Collections.emptyList();
    }//w w w . ja va 2  s .  c  om
    List<?> pluginSpecs = getConfigValue().getValue();
    List<DotCiPluginAdapter> plugins = new ArrayList<DotCiPluginAdapter>(pluginSpecs.size());
    for (Object pluginSpec : pluginSpecs) {
        String pluginName;
        Object options;
        if (pluginSpec instanceof String) {
            pluginName = (String) pluginSpec;
            options = new HashMap<Object, Object>();
        } else { // has to be a Map
            Map<String, Object> pluginSpecMap = (Map<String, Object>) pluginSpec;
            pluginName = Iterables.getOnlyElement(pluginSpecMap.keySet());
            options = pluginSpecMap.get(pluginName);
        }
        plugins.add(createPlugin(pluginName, options));
    }
    return plugins;
}

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

@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs,
        final ComputationTarget target, final Set<ValueRequirement> desiredValues)
        throws AsynchronousExecution {
    final ValueRequirement desiredValue = Iterables.getOnlyElement(desiredValues);
    final String dataType = desiredValue.getConstraint(PROPERTY_DATA_TYPE);
    final FXOptionSecurity security = (FXOptionSecurity) target.getSecurity();
    final UnorderedCurrencyPair currencyPair = UnorderedCurrencyPair.of(security.getPutCurrency(),
            security.getCallCurrency());
    if (dataType.equals(LIVE)) {
        final Object spotObject = inputs.getValue(ValueRequirementNames.SPOT_RATE);
        if (spotObject == null) {
            throw new OpenGammaRuntimeException("Could not get live market data for " + currencyPair);
        }/*  w  w  w .  j av  a  2 s  .c om*/
        final double spot = (Double) spotObject;
        return Collections.singleton(new ComputedValue(
                new ValueSpecification(ValueRequirementNames.SPOT_RATE_FOR_SECURITY, target.toSpecification(),
                        createValueProperties().with(PROPERTY_DATA_TYPE, LIVE).get()),
                spot));
    } else if (dataType.equals(LAST_CLOSE)) {
        final Object spotObject = inputs.getValue(ValueRequirementNames.HISTORICAL_TIME_SERIES_LATEST);
        if (spotObject == null) {
            throw new OpenGammaRuntimeException("Could not get last close market data for " + currencyPair);
        }
        final double spot = (Double) spotObject;
        return Collections.singleton(new ComputedValue(
                new ValueSpecification(ValueRequirementNames.SPOT_RATE_FOR_SECURITY, target.toSpecification(),
                        createValueProperties().with(PROPERTY_DATA_TYPE, LAST_CLOSE).get()),
                spot));
    }
    throw new OpenGammaRuntimeException("Did not recognise property type " + dataType);
}