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:com.ikanow.aleph2.analytics.services.DeduplicationEnrichmentContext.java

/** Called for every new/existing merge
 * @param id_duplicate_map/*  w w w .ja va  2  s .  c o m*/
 * @param grouping_key
 */
public void resetMutableState(final Collection<JsonNode> dups, final JsonNode grouping_key) {
    _mutable_state._id_set = dups.stream().map(j -> j.get(AnnotationBean._ID)).filter(id -> null != id)
            .collect(Collectors.toSet());

    _mutable_state._grouping_key = _json_to_grouping_key.apply(grouping_key);
    _mutable_state._num_emitted = 0;
    _mutable_state._manual_ids_to_delete = new LinkedList<JsonNode>();
}

From source file:de.tudarmstadt.ukp.dkpro.core.io.text.TokenizedTextWriter.java

/**
 * Read a file containing stopwords (one per line).
 * <p>/*from ww  w.j  av  a  2 s.com*/
 * Empty lines and lines starting with ("#") are filtered out.
 * 
 * @param f
 * @return
 * @throws IOException
 */
private static Set<String> readStopwordsFile(File f) throws IOException {
    return Files.readAllLines(f.toPath()).stream().map(String::trim).filter(l -> !l.isEmpty())
            .filter(l -> !l.startsWith("#")).map(w -> w.toLowerCase()).collect(Collectors.toSet());
}

From source file:com.thinkbiganalytics.metadata.modeshape.security.role.JcrAbstractRoleMembership.java

@Override
public void setMemebers(UsernamePrincipal... principals) {
    Set<UsernamePrincipal> newMembers = Arrays.stream(principals).collect(Collectors.toSet());
    Set<UsernamePrincipal> oldMembers = streamUsers().collect(Collectors.toSet());

    newMembers.stream().filter(u -> !oldMembers.contains(u)).forEach(this::addMember);

    oldMembers.stream().filter(u -> !newMembers.contains(u)).forEach(this::removeMember);
}

From source file:com.netflix.spinnaker.clouddriver.kubernetes.v2.artifact.ArtifactReplacer.java

public Set<Artifact> findAll(KubernetesManifest input) {
    DocumentContext document;/* w w  w  . j a v  a2s . c  o m*/
    try {
        document = JsonPath.using(configuration).parse(mapper.writeValueAsString(input));
    } catch (JsonProcessingException e) {
        throw new RuntimeException("Malformed manifest", e);
    }

    return replacers.stream().map(r -> {
        try {
            return ((List<String>) mapper.convertValue(r.findAll(document), new TypeReference<List<String>>() {
            })).stream().map(s -> {
                String nameFromReference = r.getNameFromReference(s);
                String name = nameFromReference == null ? s : nameFromReference;
                if (r.namePattern == null || nameFromReference != null) {
                    return Artifact.builder().type(r.getType().toString()).reference(s).name(name).build();
                } else {
                    return null;
                }
            }).filter(Objects::nonNull);
        } catch (Exception e) {
            // This happens when a manifest isn't fully defined (e.g. not all properties are there)
            log.debug("Failure converting artifacts for {} using {} (skipping)", input.getFullResourceName(), r,
                    e);
            return Stream.<Artifact>empty();
        }
    }).flatMap(x -> x).collect(Collectors.toSet());
}

From source file:com.netflix.genie.web.security.oauth2.pingfederate.PingFederateJWTTokenServices.java

private OAuth2Request getOAuth2Request(@NotNull final JwtClaims claims)
        throws MalformedClaimException, InvalidTokenException {
    final String clientId = claims.getClaimValue("client_id", String.class);
    @SuppressWarnings("unchecked")
    final Set<String> scopes = Sets.newHashSet(claims.getClaimValue("scope", Collection.class));

    final Set<SimpleGrantedAuthority> authorities = scopes.stream().map(scope -> {
        if (scope.startsWith(GENIE_SCOPE_PREFIX)) {
            scope = scope.substring(GENIE_SCOPE_PREFIX_LENGTH);
        }//  w  ww. ja  v a 2 s.  co m

        return new SimpleGrantedAuthority(ROLE + scope.toUpperCase());
    }).collect(Collectors.toSet());

    if (authorities.isEmpty()) {
        throw new InvalidTokenException("No scopes found. Unable to authorize");
    }

    // Assume a user is a subset of admin so always grant admin user the role user as well
    if (authorities.contains(ADMIN)) {
        authorities.add(USER);
    }

    return new OAuth2Request(null, clientId, authorities, true, scopes, null, null, null, null);
}

From source file:com.uber.hoodie.hadoop.realtime.AbstractRealtimeRecordReader.java

/**
 * Given a comma separated list of field names and positions at which they appear on Hive, return
 * a ordered list of field names, that can be passed onto storage.
 *//*  ww  w .j a  v  a 2  s .  c  om*/
public static List<String> orderFields(String fieldNameCsv, String fieldOrderCsv,
        String partitioningFieldsCsv) {

    String[] fieldOrders = fieldOrderCsv.split(",");
    Set<String> partitioningFields = Arrays.stream(partitioningFieldsCsv.split(","))
            .collect(Collectors.toSet());
    List<String> fieldNames = Arrays.stream(fieldNameCsv.split(","))
            .filter(fn -> !partitioningFields.contains(fn)).collect(Collectors.toList());

    // Hive does not provide ids for partitioning fields, so check for lengths excluding that.
    if (fieldNames.size() != fieldOrders.length) {
        throw new HoodieException(
                String.format("Error ordering fields for storage read. #fieldNames: %d, #fieldPositions: %d",
                        fieldNames.size(), fieldOrders.length));
    }
    TreeMap<Integer, String> orderedFieldMap = new TreeMap<>();
    for (int ox = 0; ox < fieldOrders.length; ox++) {
        orderedFieldMap.put(Integer.parseInt(fieldOrders[ox]), fieldNames.get(ox));
    }
    return new ArrayList<>(orderedFieldMap.values());
}

From source file:com.carlomicieli.jtrains.value.objects.LocalizedField.java

/**
 * Returns the {@code Set} of the {@code Locale}s used in the current field.
 * @return the {@code Locale}s set/*  ww  w. jav a2 s  . c om*/
 */
public Set<Locale> locales() {
    return this.values.keySet().stream().map(LocalizedField::localeFromKey).collect(Collectors.toSet());
}

From source file:bjerne.gallery.service.impl.GalleryAuthorizationServiceSSImpl.java

private Collection<String> getCurrentUserRoles() {
    Collection<? extends GrantedAuthority> authorities = SecurityContextHolder.getContext().getAuthentication()
            .getAuthorities();//  ww w  .jav a2 s . c  o  m
    Collection<String> currentUserRoles = authorities.stream().map(e -> e.getAuthority())
            .collect(Collectors.toSet());
    LOG.debug("Roles for current user: {}", currentUserRoles);
    return currentUserRoles;
}

From source file:me.rkfg.xmpp.bot.plugins.FaggotOfTheDayPlugin.java

private Set<Occupant> getAllOccupants(MultiUserChat muc) {
    return muc.getOccupants().stream().map(muc::getOccupant)
            .filter(occupant -> !occupant.getNick().equals(getBotNick())).collect(Collectors.toSet());
}

From source file:io.gravitee.management.service.impl.ApplicationServiceImpl.java

@Override
public Set<ApplicationEntity> findAll() {
    try {//from   w w  w . j av  a2s.  co m
        LOGGER.debug("Find all applications");

        final Set<Application> applications = applicationRepository.findAll();

        if (applications == null || applications.isEmpty()) {
            return emptySet();
        }

        final Set<ApplicationEntity> applicationEntities = new HashSet<>(applications.size());

        applicationEntities
                .addAll(applications.stream().map(ApplicationServiceImpl::convert).collect(Collectors.toSet()));

        return applicationEntities;
    } catch (TechnicalException ex) {
        LOGGER.error("An error occurs while trying to find all applications", ex);
        throw new TechnicalManagementException("An error occurs while trying to find all applications", ex);
    }
}