Example usage for java.util Collections singleton

Introduction

In this page you can find the example usage for java.util Collections singleton.

Prototype

public static <T> Set<T> singleton(T o)

Source Link

Document

Returns an immutable set containing only the specified object.

Usage

From source file:com.opengamma.financial.analytics.model.volatility.surface.NonLinearLeastSquaresSurfaceFittingFunction.java

@SuppressWarnings("unused")
@Override/*from w ww  .ja v  a  2  s . co m*/
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs,
        final ComputationTarget target, final Set<ValueRequirement> desiredValues) {
    final Object objectSurfaceData = inputs.getValue(_surfaceRequirement);
    if (objectSurfaceData == null) {
        throw new OpenGammaRuntimeException("Could not get volatility surface data");
    }
    @SuppressWarnings("unchecked")
    final VolatilitySurfaceData<Tenor, Double> volatilitySurfaceData = (VolatilitySurfaceData<Tenor, Double>) objectSurfaceData;
    final Tenor[] tenors = volatilitySurfaceData.getXs();
    final Double[] strikes = volatilitySurfaceData.getYs();

    return Collections.singleton(new ComputedValue(_resultSpecification, 0));
}

From source file:examples.JsonSerializationProcessor.java

/**
 * Constructor. Initializes various helper objects we use for the JSON
 * serialization, and opens the file that we want to write to.
 *
 * @throws IOException/*from   www.j  av a 2s. co  m*/
 *             if there is a problem opening the output file
 */
public JsonSerializationProcessor() throws IOException {
    // The converter is used to copy selected parts of the data. We use this
    // to remove some parts from the documents we serialize. The converter
    // uses a JacksonObjectFactory to be sure that we create objects for
    // which we know how to write JSON. A similar converter without the
    // filtering enabled would also be used to create JSON-serializable
    // objects from any other implementation of the Wikidata Toolkit
    // datamodel.
    this.datamodelConverter = new DatamodelConverter(new JacksonObjectFactory());
    // Do not copy references at all:
    this.datamodelConverter.setOptionDeepCopyReferences(false);
    // Only copy English labels, descriptions, and aliases:
    this.datamodelConverter.setOptionLanguageFilter(Collections.singleton("en"));
    // Only copy statements of some properties:
    Set<PropertyIdValue> propertyFilter = new HashSet<>();
    propertyFilter.add(Datamodel.makeWikidataPropertyIdValue("P18")); // image
    propertyFilter.add(Datamodel.makeWikidataPropertyIdValue("P106")); // occupation
    propertyFilter.add(Datamodel.makeWikidataPropertyIdValue("P569")); // birthdate
    this.datamodelConverter.setOptionPropertyFilter(propertyFilter);
    // Do not copy any sitelinks:
    this.datamodelConverter.setOptionSiteLinkFilter(Collections.<String>emptySet());

    // The (compressed) file we write to.
    OutputStream outputStream = new GzipCompressorOutputStream(
            new BufferedOutputStream(ExampleHelpers.openExampleFileOuputStream(OUTPUT_FILE_NAME)));
    this.jsonSerializer = new JsonSerializer(outputStream);

    this.jsonSerializer.open();
}

From source file:com.spankingrpgs.scarletmoon.loader.ItemLoader.java

private List<String> hydrateEquipSlots(JsonNode equipSlots) {
    if (equipSlots == null) {
        return Collections.emptyList();
    }//w  ww . j  a va2  s . c o m
    List<String> equipSlotNames = new ArrayList<>();
    Iterator<JsonNode> equipSlotsIterator = equipSlots.elements();
    while (equipSlotsIterator.hasNext()) {
        equipSlotNames
                .add(EnumUtils.nameToEnum(Collections.singleton(equipSlotsIterator.next().asText())).get(0));
    }
    return equipSlotNames;
}

From source file:cop.raml.utils.example.JsonExample.java

/**
 * Retrieve example for given {@code element}. First of all it checks existed {@link #cache} and if example for given {@code element} was already
 * in cache, then return it. Then it tries to generate example for simple types (e.g. primitives, Date, UUID). If examples is still not found,
 * then use {@link Config#ramlSkip} filter to filter out some element types and invoke {@link #getTypeExample(TypeElement, Set)}. Put result to
 * cache if it is not {@code null}.//from   w w  w . ja  va2s .c om
 *
 * @param element element for example
 * @param visited visited element types (it's used to prevent cycle references)
 * @return example object ({@link Map} or {@link Set}) or {@code null} if example is not found
 */
private Object getElementExample(@NotNull Element element, @NotNull Set<String> visited) {
    try {
        ThreadLocalContext.getImportScanner().setCurrentElement(element);
        TypeMirror type = ElementUtils.getType(element);
        String className = type.toString();

        Object res;

        if (cache.containsKey(className))
            res = cache.get(className);
        else if (ElementUtils.isEnum(type))
            res = getEnumExample(type);
        else if ((res = getAutoGeneratedElementExample(element, random)) == null) {
            if (String.class.getName().equals(className))
                res = element.getSimpleName().toString();
            else if (!Config.get().ramlSkip(type.toString())) {
                TypeElement obj = element instanceof TypeElement ? (TypeElement) element
                        : ElementUtils.asElement(type);

                if ((res = getTypeExample(obj, visited)) != null)
                    cache.putIfAbsent(className, res);
            }
        }

        if (res == null)
            return null;
        if (ElementUtils.isArray(element) || ElementUtils.isCollection(element))
            return Collections.singleton(res);
        return res;
    } catch (Exception ignored) {
        return null;
    }
}

From source file:org.apereo.services.persondir.support.rule.StringFormatAttributeRule.java

@Override
public Set<String> getPossibleUserAttributeNames() {
    return Collections.singleton(outputAttribute);
}

From source file:com.codeabovelab.dm.mail.template.ResourceMailTemplateProvider.java

public ResourceMailTemplateProvider(Config config, ObjectMapper objectMapper) {
    this.prefix = config.prefix;
    this.suffix = config.suffix;
    this.mimeType = config.mimeType;
    this.objectMapper = objectMapper;
    Assert.notNull(this.objectMapper, "'objectMapper' is null");
    Assert.hasText(this.prefix, "'prefix' must contains text");
    Assert.hasText(this.suffix, "'suffix' must contains text");
    Assert.notNull(this.mimeType, "'mimeType' is null");
    this.protocols = Collections.singleton(PROTOCOL);
}

From source file:com.opengamma.financial.analytics.LastHistoricalValueFunction.java

@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs,
        final ComputationTarget target, final Set<ValueRequirement> desiredValues) {
    final HistoricalTimeSeries hts = (HistoricalTimeSeries) inputs.getAllValues().iterator().next().getValue();
    final ValueRequirement desiredValue = desiredValues.iterator().next();
    return Collections.singleton(new ComputedValue(new ValueSpecification(desiredValue.getValueName(),
            target.toSpecification(), desiredValue.getConstraints()), hts.getTimeSeries().getLatestValue()));
}

From source file:com.theoryinpractise.coffeescript.CoffeeScriptCompiler.java

private Require getSandboxedRequire(Context cx, Scriptable scope, boolean sandboxed) throws URISyntaxException {
    return new Require(cx, cx.initStandardObjects(),
            new StrongCachingModuleScriptProvider(
                    new UrlModuleSourceProvider(Collections.singleton(getDirectory()), null)),
            null, null, sandboxed);//from   w w  w.  j a  v a  2  s.com
}

From source file:io.coala.experimental.dynabean.DynaBeanTest.java

@Test
public void testDynaBeans() throws Exception {
    // for usage, see
    // http://commons.apache.org/proper/commons-beanutils/javadocs/v1.9.2/apidocs/org/apache/commons/beanutils/package-summary.html#package_description

    final DynaBean dynaBean = new LazyDynaBean(); // Create LazyDynaBean
    final MutableDynaClass dynaClass = (MutableDynaClass) dynaBean.getDynaClass(); // get DynaClass

    dynaClass.add("amount", java.lang.Integer.class); // add property
    dynaClass.add("myMap", java.util.TreeMap.class); // add mapped property

    final DynaBean employee = dynaClass.newInstance();

    // TODO experiment with Jackson's AnnotationIntrospector to annotate
    // DynaBean#get(...) method with @JsonAnyGetter and #set(...) method
    // with @JsonAnySetter

    employee.set("address", new HashMap<String, String>());
    employee.set("activeEmployee", Boolean.FALSE);
    employee.set("firstName", "Fred");
    employee.set("lastName", "Flintstone");

    LOG.trace("Employee: " + JsonUtil.toPrettyJSON(employee));

    // set all <activeEmployee> attribute values to <true>
    final BeanPropertyValueChangeClosure closure = new BeanPropertyValueChangeClosure("activeEmployee",
            Boolean.TRUE);/*from w  w w  .  j  a  va2 s  .  co m*/

    final Collection<?> employees = Collections.singleton(employee);
    LOG.trace("Mutated employees: " + JsonUtil.toPrettyJSON(employees));

    // update the Collection
    CollectionUtils.forAllDo(employees, closure);

    // filter for beans with <activeEmployee> set to <false>
    final BeanPropertyValueEqualsPredicate predicate = new BeanPropertyValueEqualsPredicate("lastName",
            "Flintstone");

    // filter the Collection
    CollectionUtils.filter(employees, predicate);
    LOG.trace("Filtered employees: " + JsonUtil.toPrettyJSON(employees));
}

From source file:com.parse.ParseRelation.java

/**
 * Removes an object from this relation.
 * //from   ww w.  j  a  v  a 2s  .co  m
 * @param object
 *          The object to remove from this relation.
 */
public void remove(T object) {
    synchronized (mutex) {
        ParseRelationOperation<T> operation = new ParseRelationOperation<>(null, Collections.singleton(object));
        targetClass = operation.getTargetClass();
        getParent().performOperation(key, operation);

        knownObjects.remove(object);
    }
}