Example usage for java.util Collection stream

Introduction

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

Prototype

default Stream<E> stream()

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:de.metas.ui.web.window.datatypes.json.filters.JSONDocumentFilterParamDescriptor.java

static List<JSONDocumentFilterParamDescriptor> ofCollection(
        final Collection<DocumentFilterParamDescriptor> params, final JSONOptions jsonOpts) {
    return params.stream().map(filter -> of(filter, jsonOpts)).collect(GuavaCollectors.toImmutableList());
}

From source file:com.github.erchu.beancp.MapperExecutorSelector.java

private static <T extends MappingExecutor<?, ?>> T getBestMatchingMappingExecutor(final Class sourceClass,
        final Class destinationClass, final Collection<T> executors, final MapperExecutorMatchMode matchMode) {
    List<T> validMappers = executors.stream().filter(i -> canBeMapped(sourceClass, i.getSourceClass())
            && canBeMapped(destinationClass, i.getDestinationClass())).collect(Collectors.toList());

    if (validMappers.isEmpty()) {
        return null;
    }//from   w  ww  . j a va 2  s  .  c o m

    T mapper;

    if (matchMode == MapperExecutorMatchMode.STRICT_DESTINATION) {
        mapper = firstNonNull(
                firstOrNull(validMappers,
                        (i -> classEqualsOrWrapper(sourceClass, i.getSourceClass())
                                && classEqualsOrWrapper(destinationClass, i.getDestinationClass()))),
                firstOrNull(validMappers,
                        (i -> classEqualsOrWrapper(destinationClass, i.getDestinationClass()))));
    } else {
        mapper = firstNonNull(
                firstOrNull(validMappers,
                        (i -> classEqualsOrWrapper(sourceClass, i.getSourceClass())
                                && classEqualsOrWrapper(destinationClass, i.getDestinationClass()))),
                firstOrNull(validMappers,
                        (i -> classEqualsOrWrapper(destinationClass, i.getDestinationClass()))),
                firstOrNull(validMappers, (i -> classEqualsOrWrapper(sourceClass, i.getSourceClass()))),
                validMappers.get(0));
    }

    return mapper;
}

From source file:mtsar.api.csv.WorkerRankingCSV.java

public static void write(Collection<WorkerRanking> rankings, OutputStream output) throws IOException {
    try (final Writer writer = new OutputStreamWriter(output, StandardCharsets.UTF_8)) {
        final Iterable<String[]> iterable = () -> rankings.stream().sorted(ORDER)
                .map(aggregation -> new String[] { Integer.toString(aggregation.getWorker().getId()), // worker_id
                        Double.toString(aggregation.getReputation()) // reputation
                }).iterator();/*w  w  w . j  a  va2s.co m*/

        FORMAT.withHeader(HEADER).print(writer).printRecords(iterable);
    }
}

From source file:com.github.horrorho.inflatabledonkey.cloud.clients.AssetsClient.java

public static List<Assets> assets(HttpClient httpClient, CloudKitty kitty, ProtectionZone zone,
        Collection<Manifest> manifests) throws IOException {

    if (manifests.isEmpty()) {
        return new ArrayList<>();
    }/*from  ww  w .j a  va 2  s. co  m*/

    List<String> manifestIDs = manifests.stream().map(AssetsClient::manifestIDs).flatMap(Collection::stream)
            .collect(Collectors.toList());

    List<CloudKit.RecordRetrieveResponse> responses = kitty.recordRetrieveRequest(httpClient, "_defaultZone",
            manifestIDs);
    logger.info("-- assets() - responses: {}", responses.size());

    // Manifests with multiple counts only return protection info for the first block, as we are passing blocks in
    // order we can reference the previous protection zone.
    // TODO tighten up.
    AtomicReference<ProtectionZone> previous = new AtomicReference<>(zone);

    return responses.stream().filter(CloudKit.RecordRetrieveResponse::hasRecord)
            .map(CloudKit.RecordRetrieveResponse::getRecord).map(r -> assets(r, zone, previous))
            .collect(Collectors.toList());
}

From source file:com.yahoo.bard.webservice.util.Utils.java

/**
 * Given a collection of objects which share the same super class, return the subset of objects that share a common
 * sub class.//from  w w  w .  j  ava  2s .  c o  m
 *
 * @param set  Input set
 * @param <T> Input set type
 * @param type  sub class
 * @param <K> sub class type
 *
 * @return ordered subset of objects that share a common sub class
 */
public static <T, K extends T> LinkedHashSet<K> getSubsetByType(Collection<T> set, Class<K> type) {
    return set.stream().filter(member -> type.isAssignableFrom(member.getClass()))
            .map(StreamUtils.uncheckedCast(type)).collect(Collectors.toCollection(LinkedHashSet::new));
}

From source file:mtsar.api.csv.AnswerAggregationCSV.java

public static void write(Collection<AnswerAggregation> aggregations, OutputStream output) throws IOException {
    try (final Writer writer = new OutputStreamWriter(output, StandardCharsets.UTF_8)) {
        final Iterable<String[]> iterable = () -> aggregations.stream().sorted(ORDER)
                .map(aggregation -> new String[] { Integer.toString(aggregation.getTask().getId()), // task_id
                        String.join("|", aggregation.getAnswers()) // answers
                }).iterator();/* w  w w  .  j  a  v  a2s . c om*/

        FORMAT.withHeader(HEADER).print(writer).printRecords(iterable);
    }
}

From source file:com.samsung.sjs.theorysolver.TheorySolver.java

private static <T> Collection<T> without(Collection<T> collection, T element) {
    return collection.stream().filter(e -> !element.equals(e)).collect(Collectors.toList());
}

From source file:com.khartec.waltz.service.data_flow.RatedDataFlowService.java

private static List<RatedDataFlow> prepareResult(Collection<DataFlow> flows,
        Map<String, Map<Long, AuthoritativeSource>> authSourceByTypeThenApp) {
    return flows.stream().map(f -> {
        Rating rating = lookupRatingFn.apply(f, authSourceByTypeThenApp);
        return ImmutableRatedDataFlow.builder().dataFlow(f).rating(rating).build();
    }).collect(Collectors.toList());
}

From source file:uk.co.jassoft.markets.datamodel.story.NamedEntities.java

public static void setEntitySentiment(Collection<NamedEntity> collection, final String name,
        final String sentence, final int sentiment) {
    final String strippedName = name.replaceAll("[^a-zA-Z0-9\\s\\-]", "");

    collection.stream().filter(namedEntity -> namedEntity.getName().equalsIgnoreCase(strippedName))
            .forEach(namedEntity -> {

                namedEntity.getSentiments().stream().filter(s -> s.getSentence().equals(sentence))
                        .forEach(s -> s.setSentiment(sentiment));
            });//from w  ww. j a  va  2s  .  com

}

From source file:mtsar.api.csv.WorkerCSV.java

public static void write(Collection<Worker> workers, OutputStream output) throws IOException {
    try (final Writer writer = new OutputStreamWriter(output, StandardCharsets.UTF_8)) {
        final Iterable<String[]> iterable = () -> workers.stream().sorted(ORDER)
                .map(worker -> new String[] { Integer.toString(worker.getId()), // id
                        worker.getStage(), // stage
                        Long.toString(worker.getDateTime().toInstant().getEpochSecond()), // datetime
                        String.join("|", worker.getTags()), // tags
                }).iterator();/*from  ww  w.j a  va 2  s . c  om*/

        FORMAT.withHeader(HEADER).print(writer).printRecords(iterable);
    }
}