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:io.druid.sql.calcite.rule.CaseFilteredAggregatorRule.java

@Override
public boolean matches(final RelOptRuleCall call) {
    final Aggregate aggregate = call.rel(0);
    final Project project = call.rel(1);

    if (aggregate.indicator || aggregate.getGroupSets().size() != 1) {
        return false;
    }/*from  w ww .  j a  v  a2s  .  c o  m*/

    for (AggregateCall aggregateCall : aggregate.getAggCallList()) {
        if (isNonDistinctOneArgAggregateCall(aggregateCall) && isThreeArgCase(
                project.getChildExps().get(Iterables.getOnlyElement(aggregateCall.getArgList())))) {
            return true;
        }
    }

    return false;
}

---

From source file:com.opengamma.financial.analytics.model.credit.isda.cdx.ISDACDXAsSingleNameParallelCS01Function.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 = StandardVanillaParallelCS01CDSFunction.parallelCS01(definition, yieldCurve, times,
            marketSpreads, analytic, bump * 1e-4);
    //final Double spreadCurveBump = Double.valueOf(Iterables.getOnlyElement(properties.getValues(CreditInstrumentPropertyNamesAndValues.PROPERTY_SPREAD_CURVE_BUMP)));
    //final SpreadBumpType spreadBumpType = SpreadBumpType.valueOf(Iterables.getOnlyElement(properties.getValues(CreditInstrumentPropertyNamesAndValues.PROPERTY_SPREAD_BUMP_TYPE)));
    //final PriceType priceType = PriceType.valueOf(Iterables.getOnlyElement(properties.getValues(CreditInstrumentPropertyNamesAndValues.PROPERTY_CDS_PRICE_TYPE)));
    //final double cs01 = CALCULATOR.getCS01ParallelShiftCreditDefaultSwap(valuationDate, definition, yieldCurve, times, marketSpreads, spreadCurveBump,
    //    spreadBumpType, priceType);
    final ValueSpecification spec = new ValueSpecification(ValueRequirementNames.CS01, target.toSpecification(),
            properties);//from   w w  w  . j av  a  2  s  . c  o m
    return Collections.singleton(new ComputedValue(spec, cs01));
}

---

From source file:com.google.devtools.build.lib.rules.objc.LipoSupport.java

/**
 * Registers an action to invoke "lipo" on all artifacts in {@code inputBinaries} to create the
 * {@code outputBinary} multi-architecture artifact, built for platform {@code platform}.
 *
 * <p>If there is only one input binary given, since "lipo" is an expensive action, this will only
 * symlink the output location to the input binary.
 *
 * @return this object/*from   ww  w .  j a  v  a 2s.c  o  m*/
 */
public LipoSupport registerCombineArchitecturesAction(NestedSet<Artifact> inputBinaries, Artifact outputBinary,
        Platform platform) {
    if (inputBinaries.toList().size() > 1) {
        ruleContext.registerAction(ObjcRuleClasses
                .spawnAppleEnvActionBuilder(ruleContext.getFragment(AppleConfiguration.class), platform)
                .setMnemonic("ObjcCombiningArchitectures").addTransitiveInputs(inputBinaries)
                .addOutput(outputBinary).setExecutable(CompilationSupport.xcrunwrapper(ruleContext))
                .setCommandLine(CustomCommandLine.builder().add(ObjcRuleClasses.LIPO)
                        .addExecPaths("-create", inputBinaries).addExecPath("-o", outputBinary).build())
                .build(ruleContext));
    } else {
        ruleContext.registerAction(
                new SymlinkAction(ruleContext.getActionOwner(), Iterables.getOnlyElement(inputBinaries),
                        outputBinary, "Symlinking single-architecture binary"));
    }
    return this;
}

---

From source file:org.jclouds.rimuhosting.miro.compute.suppliers.RimuHostingLocationSupplier.java

@Override
public Set<? extends Location> get() {
    Builder<Location> locations = ImmutableSet.builder();
    Iterable<DataCenter> list = Iterables
            .filter(Iterables.transform(sync.getPricingPlanList(), new Function<PricingPlan, DataCenter>() {

                @Override//from  w w w. ja v a 2s . co m
                public DataCenter apply(PricingPlan arg0) {
                    return arg0.getDataCenter();
                }

            }), Predicates.<DataCenter>notNull());
    Location provider = Iterables.getOnlyElement(super.get());
    if (Iterables.size(list) == 0)
        locations.add(provider);
    else
        for (DataCenter from : list) {
            LocationBuilder builder = new LocationBuilder().scope(LocationScope.ZONE).id(from.getId())
                    .description(from.getName()).parent(provider);
            if (isoCodesById.containsKey(from.getId()))
                builder.iso3166Codes(isoCodesById.get(from.getId()));
            locations.add(builder.build());
        }
    return locations.build();
}

---

From source file:com.spotify.helios.cli.command.WildcardJobCommand.java

@Override
int run(final Namespace options, final HeliosClient client, final PrintStream out, final boolean json,
        final BufferedReader stdin) throws ExecutionException, InterruptedException, IOException {

    final String jobIdString = options.getString(jobArg.getDest());
    final Map<JobId, Job> jobs = client.jobs(jobIdString).get();

    if (jobs.size() == 0) {
        if (!json) {
            out.printf("Unknown job: %s%n", jobIdString);
        } else {//from   w ww. ja v  a  2s .c o m
            final JobDeployResponse jobDeployResponse = new JobDeployResponse(
                    JobDeployResponse.Status.JOB_NOT_FOUND, null, null);
            out.print(jobDeployResponse.toJsonString());
        }
        return 1;
    } else if (jobs.size() > 1) {
        if (!json) {
            out.printf("Ambiguous job reference: %s%n", jobIdString);
        } else {
            final JobDeployResponse jobDeployResponse = new JobDeployResponse(
                    JobDeployResponse.Status.AMBIGUOUS_JOB_REFERENCE, null, null);
            out.print(jobDeployResponse.toJsonString());
        }
        return 1;
    }

    final JobId jobId = Iterables.getOnlyElement(jobs.keySet());

    return runWithJobId(options, client, out, json, jobId, stdin);
}

---

From source file:org.apache.druid.sql.calcite.rule.CaseFilteredAggregatorRule.java

@Override
public boolean matches(final RelOptRuleCall call) {
    final Aggregate aggregate = call.rel(0);
    final Project project = call.rel(1);

    if (aggregate.indicator || aggregate.getGroupSets().size() != 1) {
        return false;
    }/*ww  w.jav a2 s . c  o m*/

    for (AggregateCall aggregateCall : aggregate.getAggCallList()) {
        if (isOneArgAggregateCall(aggregateCall) && isThreeArgCase(
                project.getChildExps().get(Iterables.getOnlyElement(aggregateCall.getArgList())))) {
            return true;
        }
    }

    return false;
}

---

From source file:org.apache.shindig.social.opensocial.service.ActivityHandler.java

/**
 * Allowed end-points /activities/{userId}/@self/{actvityId}+
 *
 * examples: /activities/john.doe/@self/1
 *///from  w  w w. j  a  v  a2 s . c o m
@Operation(httpMethods = "DELETE")
public Future<?> delete(SocialRequestItem request) throws ProtocolException {

    Set<UserId> userIds = request.getUsers();
    Set<String> activityIds = ImmutableSet.copyOf(request.getListParameter("activityId"));

    HandlerPreconditions.requireNotEmpty(userIds, "No userId specified");
    HandlerPreconditions.requireSingular(userIds, "Multiple userIds not supported");
    // Throws exceptions if userIds contains more than one element or zero elements
    return service.deleteActivities(Iterables.getOnlyElement(userIds), request.getGroup(), request.getAppId(),
            activityIds, request.getToken());
}

---

From source file:org.apache.aries.blueprint.plugin.OsgiServiceProviderWriter.java

public void write(Bean bean) throws XMLStreamException {
    OsgiServiceProvider serviceProvider = bean.clazz.getAnnotation(OsgiServiceProvider.class);
    if (serviceProvider == null) {
        return;//from   w ww . ja  v a2s . c  o m
    }

    Properties properties = bean.clazz.getAnnotation(Properties.class);
    List<String> interfaceNames = Lists.newArrayList();
    for (Class<?> serviceIf : serviceProvider.classes()) {
        interfaceNames.add(serviceIf.getName());
    }

    // If there are no properties to write and only one service attribute (either
    // interface="MyServiceInterface" or auto-export="interfaces") then create an
    // empty element
    boolean writeEmptyElement = properties == null && interfaceNames.size() < 2;
    if (writeEmptyElement) {
        writer.writeEmptyElement("service");
    } else {
        writer.writeStartElement("service");
    }
    writer.writeAttribute("ref", bean.id);

    if (interfaceNames.size() == 0) {
        writer.writeAttribute("auto-export", "interfaces");
    } else if (interfaceNames.size() == 1) {
        writer.writeAttribute("interface", Iterables.getOnlyElement(interfaceNames));
    } else {
        writeInterfacesElement(interfaceNames);
    }

    writer.writeCharacters("\n");
    if (properties != null) {
        writeProperties(properties);
    }

    if (!writeEmptyElement) {
        writer.writeEndElement();
        writer.writeCharacters("\n");
    }
}

---

From source file:org.trancecode.xproc.PipelineResult.java

public void readNode(final String portName, final Result result) {
    Preconditions.checkNotNull(result);/*from   w  ww.  ja  va2s  .c  o  m*/
    final XdmNode node = Iterables.getOnlyElement(readNodes(portName));
    try {
        TransformerFactoryImpl.newInstance().newTransformer().transform(node.asSource(), result);
    } catch (final TransformerException e) {
        throw new XmlException(e, "cannot push node from port '%' to result", portName);
    }
}

---

From source file:org.apache.beam.runners.direct.ViewEvaluatorFactory.java

private <InT, OuT> TransformEvaluator<Iterable<InT>> createEvaluator(
        final AppliedPTransform<PCollection<Iterable<InT>>, PCollectionView<OuT>, WriteView<InT, OuT>> application) {
    PCollection<Iterable<InT>> input = (PCollection<Iterable<InT>>) Iterables
            .getOnlyElement(application.getInputs().values());
    final PCollectionViewWriter<InT, OuT> writer = context.createPCollectionViewWriter(input,
            (PCollectionView<OuT>) Iterables.getOnlyElement(application.getOutputs().values()));
    return new TransformEvaluator<Iterable<InT>>() {
        private final List<WindowedValue<InT>> elements = new ArrayList<>();

        @Override// w  ww .  j av a2s  .  c o m
        public void processElement(WindowedValue<Iterable<InT>> element) {
            for (InT input : element.getValue()) {
                elements.add(element.withValue(input));
            }
        }

        @Override
        public TransformResult<Iterable<InT>> finishBundle() {
            writer.add(elements);
            Builder resultBuilder = StepTransformResult.withoutHold(application);
            if (!elements.isEmpty()) {
                resultBuilder = resultBuilder.withAdditionalOutput(OutputType.PCOLLECTION_VIEW);
            }
            return resultBuilder.build();
        }
    };
}

---

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