Example usage for com.google.common.base Optional or

Introduction

In this page you can find the example usage for com.google.common.base Optional or.

Prototype

@Beta
public abstract T or(Supplier<? extends T> supplier);

Source Link

Document

Returns the contained instance if it is present; supplier.get() otherwise.

Usage

From source file:com.eucalyptus.util.CollectionUtils.java

public static <T> Function<Optional<T>, T> optionalOr(final T value) {
    return new Function<Optional<T>, T>() {
        @Nullable/*w ww.jav  a 2s .co  m*/
        @Override
        public T apply(final Optional<T> optional) {
            return optional == null ? null : optional.or(value);
        }
    };
}

From source file:org.onos.yangtools.yang.model.util.ExtendedType.java

/**
 *
 * Creates Builder for extended / derived type.
 *
 * @param typeName QName of derived type
 * @param baseType Base type of derived type
 * @param description Description of type
 * @param reference Reference of Type/* w w w.  j ava2 s . c om*/
 * @param path Schema path to type definition.
 */
public static final Builder builder(final QName typeName, final TypeDefinition<?> baseType,
        final Optional<String> description, final Optional<String> reference, final SchemaPath path) {
    return new Builder(typeName, baseType, description.or(""), reference.or(""), path);
}

From source file:eu.eubrazilcc.lvl.service.cache.SequenceGeolocationCache.java

private static FeatureCollection findNearbySequences(final String collection, final Point point,
        final double maxDistance, final boolean group, final boolean heatmap) {
    Optional<FeatureCollection> features = absent();
    try {/*from ww w .  ja  v a2  s  .  c  om*/
        features = CACHE.get(key(collection, point, maxDistance, group, heatmap));
    } catch (ExecutionException e) {
        LOGGER.error("Failed to get sequence geolocation from cache", e);
    }
    return features.or(FeatureCollection.builder().build());
}

From source file:org.apache.lens.server.common.RestAPITestUtil.java

public static Response postQuery(final WebTarget target, final Optional<LensSessionHandle> sessionId,
        final Optional<String> query, final Optional<String> operation, Optional<LensConf> lensConfOptional,
        MediaType mt) {//from ww  w  . ja v  a 2 s .c  o  m

    FormDataMultiPart mp = FormDataMultiPartFactory.createFormDataMultiPartForQuery(sessionId, query, operation,
            lensConfOptional.or(new LensConf()), mt);

    return target.path("queryapi/queries").request(mt)
            .post(Entity.entity(mp, MediaType.MULTIPART_FORM_DATA_TYPE));
}

From source file:org.apache.aurora.scheduler.SchedulerModule.java

@VisibleForTesting
static TierConfig parseTierConfig(Optional<String> config) {
    Optional<TierConfig> map = config.transform(input -> {
        try {/*  w  w w  . j  ava 2 s . com*/
            return new ObjectMapper().readValue(input, TierConfig.class);
        } catch (IOException e) {
            LOG.error("Error parsing tier configuration file.");
            throw Throwables.propagate(e);
        }
    });
    return map.or(TierConfig.EMPTY);
}

From source file:storm.mesos.util.MesosCommon.java

public static String getNimbusHost(Map mesosStormConf) throws UnknownHostException {
    Optional<String> nimbusHostFromConfig = Optional
            .fromNullable((String) mesosStormConf.get(Config.NIMBUS_HOST));
    Optional<String> nimbusHostFromEnv = Optional.fromNullable(System.getenv("MESOS_NIMBUS_HOST"));

    return nimbusHostFromConfig.or(nimbusHostFromEnv).or(InetAddress.getLocalHost().getCanonicalHostName());
}

From source file:org.apache.aurora.scheduler.base.CommandUtil.java

/**
 * Creates a description of a command that will fetch and execute the given URI to an executor
 * binary./*from   w  ww.  j av  a  2 s. c  o  m*/
 *
 * @param executorUri A URI to the executor
 * @param executorResources A list of URIs to be fetched into the sandbox with the executor.
 * @param commandBasePath The relative base path of the executor.
 * @param extraArguments Extra command line arguments to add to the generated command.
 * @return A CommandInfo.Builder populated with resources and a command.
 */
public static CommandInfo.Builder create(String executorUri, List<String> executorResources,
        String commandBasePath, Optional<String> extraArguments) {

    Preconditions.checkNotNull(executorResources);
    MorePreconditions.checkNotBlank(executorUri);
    MorePreconditions.checkNotBlank(commandBasePath);
    CommandInfo.Builder builder = CommandInfo.newBuilder();

    builder.addAllUris(Iterables.transform(executorResources, STRING_TO_URI_RESOURCE));
    builder.addUris(STRING_TO_URI_RESOURCE.apply(executorUri));

    String cmdLine = commandBasePath + uriBasename(executorUri) + " " + extraArguments.or("");
    return builder.setValue(cmdLine.trim());
}

From source file:org.jclouds.rest.internal.TransformerForRequest.java

@SuppressWarnings("unchecked")
private static Key<? extends Function<HttpResponse, ?>> getJAXBParserKeyForMethod(Invokable<?, ?> invoked) {
    Optional<Type> configuredReturnVal = Optional.absent();
    if (invoked.isAnnotationPresent(JAXBResponseParser.class)) {
        Type configuredClass = invoked.getAnnotation(JAXBResponseParser.class).value();
        configuredReturnVal = configuredClass.equals(NullType.class) ? Optional.<Type>absent()
                : Optional.<Type>of(configuredClass);
    }//from  ww  w  .ja va  2 s.c o m
    Type returnVal = configuredReturnVal.or(getReturnTypeFor(invoked.getReturnType()));
    Type parserType = newParameterizedType(ParseXMLWithJAXB.class, returnVal);
    return (Key<? extends Function<HttpResponse, ?>>) Key.get(parserType);
}

From source file:com.qcadoo.mes.orders.dates.OrderDates.java

public static ThreeLevelDate threeLevelDate(final Entity order, final String plannedDateFieldName,
        final String correctedDateFieldName, final String effectiveDateFieldName,
        final Optional<DateTime> defaultPlanned) {
    Optional<DateTime> plannedStart = tryExtractLocalDate(order, plannedDateFieldName);

    Preconditions.checkArgument(defaultPlanned.isPresent() || plannedStart.isPresent(),
            "You have to either pass an order with defined planned dates or provide the default values");

    Optional<DateTime> correctedStart = tryExtractLocalDate(order, correctedDateFieldName);
    Optional<DateTime> effectiveStart = tryExtractLocalDate(order, effectiveDateFieldName);

    return new ThreeLevelDate(plannedStart.or(defaultPlanned).get(), correctedStart, effectiveStart);
}

From source file:io.crate.analyze.relations.RelationNormalizer.java

@Nullable
private static HavingClause pushHaving(Optional<HavingClause> childHaving,
        Optional<HavingClause> parentHaving) {
    assert !(childHaving.isPresent()
            && parentHaving.isPresent()) : "Cannot merge 'having' if exists in both parent and child relations";
    return childHaving.or(parentHaving).orNull();
}