Example usage for java.util Collections emptySet

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static final <T> Set<T> emptySet()

Source Link

Document

Returns an empty set (immutable).

Usage

From source file:ch.cyberduck.core.s3.S3LocationFeature.java

@Override
public Set<Name> getLocations() {
    // Only for AWS
    if (session.getHost().getHostname().endsWith(PreferencesFactory.get().getProperty("s3.hostname.default"))) {
        return session.getHost().getProtocol().getRegions();
    }/*w w w  . ja  v a2s.c  o  m*/
    return Collections.emptySet();
}

From source file:nu.yona.server.goals.service.GoalService.java

public Set<GoalDto> getGoalsOfUser(UUID forUserId) {
    UserDto user = userService.getPrivateUser(forUserId);
    return user.getOwnPrivateData().getGoals().orElse(Collections.emptySet());
}

From source file:Main.java

/**
 * Creates an unmodifiable shallow copy of the given original {@link Set}. <p> While the copy returns an immutable
 * copy of the {@link Set} the content is not cloned in any way. Unless the content is immutable by itself the
 * result is not fully immutable. In the shallow copy all references are the same as in the original {@link Set}!
 * </p>/*  w w w. j av a  2 s.  c  o  m*/
 *
 * @param original The {@link Set} to copy the elements fro.
 * @param <E>      The type of the elements
 *
 * @return Returns an immutable (unmodifiable) copy of the original {@link Set} with all the elements added but not
 * cloned!
 */
public static <E> Set<E> createUnmodifiableShallowCopy(final Set<E> original) {
    if (original == null || original.isEmpty()) {
        return Collections.emptySet();
    } else {
        return Collections.unmodifiableSet(new HashSet<E>(original));
    }
}

From source file:io.seldon.clustering.recommender.GlobalClusterCountsRecommender.java

@Override
public ItemRecommendationResultSet recommend(String client, Long user, int dimensionId, int maxRecsCount,
        RecommendationContext ctxt, List<Long> recentItemInteractions) {
    CountRecommender r = cUtils.getCountRecommender(client);
    if (r != null) {
        long t1 = System.currentTimeMillis();
        //RECENT ACTIONS
        Set<Long> exclusions = Collections.emptySet();
        if (ctxt.getMode() == RecommendationContext.MODE.EXCLUSION) {
            exclusions = ctxt.getContextItems();
        }/*from  ww  w  .jav  a  2  s.  c om*/
        Double decayRate = ctxt.getOptsHolder().getDoubleOption(DECAY_RATE_OPTION_NAME);
        Map<Long, Double> recommendations = r.recommendGlobal(dimensionId, maxRecsCount, exclusions, decayRate,
                null);
        long t2 = System.currentTimeMillis();
        logger.debug("Recommendation via cluster counts for user " + user + " took " + (t2 - t1));
        List<ItemRecommendationResultSet.ItemRecommendationResult> results = new ArrayList<>();
        for (Map.Entry<Long, Double> entry : recommendations.entrySet()) {
            results.add(new ItemRecommendationResultSet.ItemRecommendationResult(entry.getKey(),
                    entry.getValue().floatValue()));
        }
        return new ItemRecommendationResultSet(results, name);
    } else {
        return new ItemRecommendationResultSet(
                Collections.<ItemRecommendationResultSet.ItemRecommendationResult>emptyList(), name);
    }
}

From source file:com.qcadoo.mes.basic.shift.WorkingHours.java

private Set<TimeRange> parseIntervals(final String hoursRanges) {
    if (StringUtils.isBlank(hoursRanges)) {
        return Collections.emptySet();
    }/*from  www.j  a v a 2s  .  c om*/
    String trimmedHoursRanges = StringUtils.remove(hoursRanges, ' ');
    if (!WORKING_HOURS_PATTERN.matcher(trimmedHoursRanges).matches()) {
        throw new IllegalArgumentException(
                String.format("Invalid shift's work time definition format: %s", hoursRanges));
    }
    final Set<TimeRange> intervals = Sets.newHashSet();
    for (String hoursRange : StringUtils.split(trimmedHoursRanges, ',')) {
        TimeRange interval = stringToInterval(hoursRange);
        if (interval != null) {
            intervals.add(interval);
        }
    }
    return intervals;
}

From source file:org.osiam.security.authentication.OsiamClientDetails.java

/**
 * Get a set of resource id's.
 *
 * @return always empty
 */
@Override
public Set<String> getResourceIds() {
    return Collections.emptySet();
}

From source file:io.seldon.clustering.recommender.BaseItemClusterCountsRecommender.java

ItemRecommendationResultSet recommend(String recommenderName, String recommenderType, String client, Long user,
        int dimensionId, int maxRecsCount, RecommendationContext ctxt) {
    RecommendationContext.OptionsHolder optionsHolder = ctxt.getOptsHolder();
    if (ctxt.getCurrentItem() != null) {
        Set<Long> exclusions = Collections.emptySet();
        if (ctxt.getMode() == RecommendationContext.MODE.EXCLUSION) {
            exclusions = ctxt.getContextItems();
        }//from  w  w  w .ja  va2  s.  c  om
        CountRecommender r = cUtils.getCountRecommender(client);
        if (r != null) {
            long t1 = System.currentTimeMillis();
            Integer minClusterItems = optionsHolder.getIntegerOption(MIN_ITEMS_FOR_VALID_CLUSTER_OPTION_NAME);
            Double decayRate = optionsHolder.getDoubleOption(DECAY_RATE_OPTION_NAME);
            String clusterAlgorithm = optionsHolder.getStringOption(CLUSTER_ALG_OPTION_NAME);
            Map<Long, Double> recommendations = r.recommendUsingItem(recommenderType, ctxt.getCurrentItem(),
                    dimensionId, maxRecsCount, exclusions, decayRate, clusterAlgorithm, minClusterItems);
            long t2 = System.currentTimeMillis();
            logger.debug("Recommendation via cluster counts for item  " + ctxt.getCurrentItem() + " for user "
                    + user + " took " + (t2 - t1));
            List<ItemRecommendationResultSet.ItemRecommendationResult> results = new ArrayList<>();
            for (Map.Entry<Long, Double> entry : recommendations.entrySet()) {
                results.add(new ItemRecommendationResultSet.ItemRecommendationResult(entry.getKey(),
                        entry.getValue().floatValue()));
            }
            return new ItemRecommendationResultSet(results, recommenderName);
        } else {
            return new ItemRecommendationResultSet(
                    Collections.<ItemRecommendationResultSet.ItemRecommendationResult>emptyList(),
                    recommenderName);
        }

    } else {
        logger.info("Can't cluster count for item for user " + user + " as no current item passed in");
        return new ItemRecommendationResultSet(
                Collections.<ItemRecommendationResultSet.ItemRecommendationResult>emptyList(), recommenderName);
    }
}

From source file:org.arrow.model.event.intermediate.AbstractIntermediateEvent.java

public Set<Flow> getOutgoingFlows() {
    if (outgoingFlows == null && outgoingLinkFlows == null) {
        return Collections.emptySet();
    }//from  ww w. j a  va  2  s  .  com
    Set<Flow> flows = new HashSet<>();
    flows.addAll(outgoingFlows);
    flows.addAll(outgoingLinkFlows);
    return flows;
}

From source file:com.netflix.spinnaker.fiat.providers.DefaultServiceAccountProvider.java

@Override
public Set<ServiceAccount> getAllUnrestricted() throws ProviderException {
    return Collections.emptySet();
}

From source file:org.trustedanalytics.servicecatalog.security.JwtUserDetailsTokenConverter.java

@SuppressWarnings("unchecked")
private Collection<? extends GrantedAuthority> getAuthorities(Map<String, ?> map) {
    if (!map.containsKey(SCOPE)) {
        return Collections.emptySet();
    }//from   w  w w .  j  a  v a 2 s  .com

    return ((Collection<String>) map.get(SCOPE)).stream().map(v -> new SimpleGrantedAuthority(v))
            .collect(Collectors.toSet());
}