Example usage for java.util.stream Collectors toSet

Introduction

In this page you can find the example usage for java.util.stream Collectors toSet.

Prototype

public static <T> Collector<T, ?, Set<T>> toSet()

Source Link

Document

Returns a Collector that accumulates the input elements into a new Set .

Usage

From source file:software.uncharted.service.ClusterService.java

public ClusterResponse getTopClusters(Integer from_) {
    final Integer from = from_ != null ? from_ : 0;

    final String AGGREGATION_NAME = "clusters";
    TermsBuilder termsBuilder = AggregationBuilders.terms(AGGREGATION_NAME).field("lsh")
            .size(from + CLUSTERS_PER_PAGE);

    SearchRequestBuilder searchRequestBuilder = client.prepareSearch().setQuery(QueryBuilders.matchAllQuery())
            .setSize(0).setPreference(preference).addAggregation(termsBuilder);

    SearchResponse searchResponse = client.executeSearch(searchRequestBuilder);

    List<String> topBuckets = ((Terms) searchResponse.getAggregations().get(AGGREGATION_NAME)).getBuckets()
            .stream().map(MultiBucketsAggregation.Bucket::getKeyAsString) // pull out the term as a string
            .collect(Collectors.toList());

    topBuckets = topBuckets.subList(from, Math.min(topBuckets.size(), from + CLUSTERS_PER_PAGE));

    Set<Cluster> clusters = topBuckets.stream().map(lsh -> getCluster(lsh)).collect(Collectors.toSet());

    final boolean hasMore = ((Terms) searchResponse.getAggregations().get(AGGREGATION_NAME))
            .getSumOfOtherDocCounts() > 0L;

    return new ClusterResponse().setClusters(clusters).setHasMore(hasMore);

}

From source file:se.uu.it.cs.recsys.service.preference.SameCourseFinder.java

/**
 * Gets the info about course id collection representing the same course.
 * E.g a course with code "1DL301" can be planned in year 2015 and 2016 and
 * it will have different ids in DB in this case.
 *
 * @param scheduleInfo the info regarding which years are planned, e.g 2015;
 * non-empty input.//from  w  w w. ja  va2  s. com
 * @return non-null collection regarding id set for same course.
 * @throws IllegalArgumentException if input is null or empty
 */
public Set<Set<Integer>> getIdCollectionForSameCourse(Set<CourseSchedule> scheduleInfo) {

    if (scheduleInfo == null || scheduleInfo.isEmpty()) {
        throw new IllegalArgumentException("Schedule input must be non-empty");
    }

    List<Course> allCourses = this.courseRepository.findAll();

    // find the first plan year, e.g 2015
    int firstPlanYear = scheduleInfo.stream().sorted(
            (schedule1, schedule2) -> Short.compare(schedule1.getTaughtYear(), schedule2.getTaughtYear()))
            .findFirst().get().getTaughtYear();

    // only get the course ids for plan year, e.g 2015, 2016
    Set<Course> planYearCourseSet = allCourses.stream()
            .filter(course -> course.getTaughtYear() >= firstPlanYear).collect(Collectors.toSet());

    Map<String, Set<Integer>> codeToIdSet = CourseFlattener.flattenToCodeAndIdSet(planYearCourseSet);

    Set<Set<Integer>> idCollectionForSameCourse = new HashSet<>();

    codeToIdSet.entrySet().stream().filter(entry -> entry.getValue().size() > 1).forEach(entry -> {
        idCollectionForSameCourse.add(entry.getValue());
    });

    return idCollectionForSameCourse;
}

From source file:net.riezebos.thoth.user.Identity.java

public Set<String> getMemberOf() {
    return memberships.stream().map(g -> g.getIdentifier()).collect(Collectors.toSet());
}

From source file:org.arrow.runtime.execution.MultipleEventExecution.java

/**
 * Returns a set of all expected event definition IDs.
 * //from  w  w  w . ja v  a2 s .c  o m
 * @return Set
 */
private Set<String> getExpectedEvendIds() {
    MultipleEventAware mea = (MultipleEventAware) getEntity();
    Set<EventDefinition> definitions = mea.getEventDefinitions();

    if (definitions == null) {
        return Collections.emptySet();
    }
    return definitions.stream().map(EventDefinition::getId).collect(Collectors.toSet());
}

From source file:se.uu.it.cs.recsys.service.resource.CourseResource.java

@Path("/credits")
@GET// ww  w.j a va  2  s.co m
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Get supported course credits.", response = CourseCredit.class, responseContainer = "Set")
public Set<Double> getSupportedCredits() {

    return this.supportedCourseCreditRepository.findAll().stream().map(entity -> entity.getCredit())
            .collect(Collectors.toSet());
}

From source file:org.ow2.proactive.connector.iaas.cloud.provider.azure.AzureProviderUtils.java

public Set<VirtualMachine> getAllVirtualMachines(Azure azureService) {

    return azureService.virtualMachines().list().stream().collect(Collectors.toSet());
}

From source file:com.netflix.genie.common.internal.dto.v4.ExecutionEnvironment.java

/**
 * Constructor./*from w  w  w  .  ja v  a 2s  . c  o m*/
 *
 * @param configs      Any configuration files needed for a resource at execution time. 1024 characters max for
 *                     each. Optional. Any blanks will be removed
 * @param dependencies Any dependency files needed for a resource at execution time. 1024 characters max for each.
 *                     Optional. Any blanks will be removed
 * @param setupFile    Any file that should be run to setup a resource at execution time. 1024 characters max.
 *                     Optional
 */
@JsonCreator
public ExecutionEnvironment(@JsonProperty("configs") @Nullable final Set<String> configs,
        @JsonProperty("dependencies") @Nullable final Set<String> dependencies,
        @JsonProperty("setupFile") @Nullable final String setupFile) {
    this.configs = configs == null ? ImmutableSet.of()
            : ImmutableSet.copyOf(configs.stream().filter(StringUtils::isNotBlank).collect(Collectors.toSet()));
    this.dependencies = dependencies == null ? ImmutableSet.of()
            : ImmutableSet
                    .copyOf(dependencies.stream().filter(StringUtils::isNotBlank).collect(Collectors.toSet()));
    this.setupFile = StringUtils.isBlank(setupFile) ? null : setupFile;
}

From source file:io.microprofile.showcase.web.EndpointService.java

private Endpoints getCachedEndpoints(final String application) throws WebApplicationException {

    Endpoints eps = this.map.get(application);

    if (null == eps) {

        final Properties p = new Properties();

        try (final InputStream is = this.context
                .getResourceAsStream("/WEB-INF/" + application + ".properties")) {
            p.load(is);//from w  w w .j  a  v a 2  s .c  om
        } catch (final Exception e) {
            throw new WebApplicationException("Unexpected error", e);
        }

        final Set<Endpoint> endpointSet = p.entrySet().stream().map(entry -> this
                .getEndpoint(String.class.cast(entry.getKey()), String.class.cast(entry.getValue())))
                .collect(Collectors.toSet());

        eps = new Endpoints();
        eps.setApplication(application);
        eps.setEndpoints(endpointSet);

        eps = this.addHyperMedia(eps);
        this.map.put(application, eps);
    }

    return eps;
}

From source file:org.lizardirc.beancounter.security.FingerprintingSslSocketFactory.java

public FingerprintingSslSocketFactory(Collection<String> c, SSLSocketFactory underlyingFactory) {
    fingerprints = new HashSet<>(c).stream().map(String::toLowerCase).map(s -> s.replaceAll("[^0-9a-f]+", ""))
            .collect(Collectors.toSet());
    this.underlyingFactory = underlyingFactory;
}

From source file:de.ks.flatadocdb.defaults.ReflectionLuceneDocumentExtractor.java

protected Set<DocField> getFields(Class<?> clazz) {

    if (!cache.containsKey(clazz)) {
        @SuppressWarnings("unchecked")
        Set<Field> allFields = ReflectionUtils.getAllFields(clazz, this::filterField);
        Set<DocField> docFields = allFields.stream().map(this::createDocField).filter(Objects::nonNull)
                .collect(Collectors.toSet());
        docFields.forEach(/*from  w  w  w . ja v a 2s . c om*/
                f -> log.debug("Found indexable lucene field {} for {}", f.getField(), clazz.getSimpleName()));
        cache.putIfAbsent(clazz, docFields);
    }
    return cache.get(clazz);
}