Example usage for java.util.stream Collectors toMap

Introduction

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

Prototype

public static <T, K, U> Collector<T, ?, Map<K, U>> toMap(Function<? super T, ? extends K> keyMapper,
        Function<? super T, ? extends U> valueMapper)

Source Link

Document

Returns a Collector that accumulates elements into a Map whose keys and values are the result of applying the provided mapping functions to the input elements.

Usage

From source file:io.spring.initializr.web.mapper.DependencyMetadataV21JsonMapper.java

@Override
public String write(DependencyMetadata metadata) {
    JSONObject json = new JSONObject();
    json.put("bootVersion", metadata.getBootVersion().toString());
    json.put("dependencies", metadata.getDependencies().entrySet().stream()
            .collect(Collectors.toMap(Map.Entry::getKey, entry -> mapDependency(entry.getValue()))));
    json.put("repositories", metadata.getRepositories().entrySet().stream()
            .collect(Collectors.toMap(Map.Entry::getKey, entry -> mapRepository(entry.getValue()))));
    json.put("boms", metadata.getBoms().entrySet().stream()
            .collect(Collectors.toMap(Map.Entry::getKey, entry -> mapBom(entry.getValue()))));
    return json.toString();
}

From source file:spring.travel.site.auth.CookieDecoder.java

public Map<String, String> decode(String cookie) throws AuthException {
    String[] parts = cookie.split("-", 2);
    if (parts.length != 2) {
        return Collections.emptyMap();
    }//from   ww w.  ja  va  2  s  .co m

    String signature = parts[0];
    String encoded = parts[1];

    if (!verifier.verify(encoded, signature)) {
        return Collections.emptyMap();
    }

    return Arrays.asList(encoded.split("&")).stream().map(keyValue -> keyValue.split("=")).collect(
            Collectors.toMap(arr -> urlDecode(arr[0]), arr -> arr.length > 1 ? urlDecode(arr[1]) : ""));
}

From source file:com.create.application.configuration.properties.EclipseLinkProperties.java

public Map<String, Object> getVendorProperties() {
    return eclipselink.entrySet().stream().collect(Collectors.toMap(toPrefixedProperty(), Entry::getValue));
}

From source file:org.obiba.mica.micaConfig.service.helper.StudyIdAggregationMetaDataHelper.java

@Cacheable(value = "aggregations-metadata", key = "'study'")
public Map<String, AggregationMetaDataProvider.LocalizedMetaData> getStudies() {
    try {/* w  ww. j  a v a2 s  .  com*/
        List<BaseStudy> studies = sudo(() -> publishedStudyService.findAll());

        return studies.stream().collect(Collectors.toMap(AbstractGitPersistable::getId, study -> {
            if (study instanceof HarmonizationStudy) {
                return new AggregationMetaDataProvider.LocalizedMetaData(study.getAcronym(), study.getName(),
                        study.getClassName());
            }

            return new AggregationMetaDataProvider.LocalizedMetaData(study.getAcronym(), study.getName(),
                    study.getClassName(), yearToString(study.getModel().get("startYear")),
                    yearToString(study.getModel().get("endYear")));
        }));
    } catch (Exception e) {
        log.debug("Could not build Study aggregation metadata {}", e);
        return Maps.newHashMap();
    }
}

From source file:org.ow2.proactive.procci.service.transformer.TransformerManager.java

@Autowired
public TransformerManager(List<TransformerProvider> transformerProviders) {
    transformerPerType = transformerProviders.stream()
            .collect(Collectors.toMap(TransformerProvider::getType, Function.identity()));
}

From source file:eu.openg.aws.s3.internal.FakeS3Object.java

private static Map<String, String> serializeUserMetadata(Map<String, String> metadata) {
    return metadata.entrySet().stream()
            .collect(Collectors.toMap(entry -> entry.getKey().toLowerCase(), Map.Entry::getValue));
}

From source file:am.ik.categolj3.api.tag.InMemoryTagService.java

@EventListener
public void handlePutEntry(EntryPutEvent.Bulk event) {
    if (log.isInfoEnabled()) {
        log.info("bulk put ({})", event.getEvents().size());
    }/* w  ww. j av a 2 s. com*/
    tags.putAll(event.getEvents().stream().map(EntryPutEvent::getEntry)
            .filter(e -> !CollectionUtils.isEmpty(e.getFrontMatter().getTags()))
            .collect(Collectors.toMap(Entry::getEntryId, e -> e.getFrontMatter().getTags())));
}

From source file:am.ik.categolj3.api.category.InMemoryCategoryService.java

@EventListener
public void handlePutEntry(EntryPutEvent.Bulk event) {
    if (log.isInfoEnabled()) {
        log.info("bulk put ({})", event.getEvents().size());
    }/*  w  w  w  .  j  a v  a  2  s  .co  m*/
    categories.putAll(event.getEvents().stream().map(EntryPutEvent::getEntry)
            .filter(e -> !CollectionUtils.isEmpty(e.getFrontMatter().getCategories()))
            .collect(Collectors.toMap(Entry::getEntryId, e -> e.getFrontMatter().getCategories())));
}

From source file:io.galeb.router.tests.hostselectors.AbstractHashHostSelectorTest.java

void doRandomTest(double errorPercentMax, double limitOfNotHitsPercent, int numPopulation) {
    final HttpServerExchange exchange = new HttpServerExchange(null);
    final Host[] newHosts = numPopulation < hosts.length ? Arrays.copyOf(hosts, numPopulation) : hosts;
    final Map<Integer, String> remains = IntStream.rangeClosed(0, newHosts.length - 1).boxed()
            .collect(Collectors.toMap(x -> x, x -> ""));

    for (int retry = 1; retry <= NUM_RETRIES; retry++) {
        final SummaryStatistics statisticsOfResults = new SummaryStatistics();

        final Map<Integer, Integer> mapOfResults = new HashMap<>();
        new Random().ints(numPopulation).map(Math::abs).forEach(x -> {
            changeExchange(exchange, x);
            int result = getResult(exchange, newHosts);
            Integer lastCount = mapOfResults.get(result);
            remains.remove(result);/* ww  w  .ja va  2 s.c om*/
            mapOfResults.put(result, lastCount != null ? ++lastCount : 0);
        });
        mapOfResults.entrySet().stream().mapToDouble(Map.Entry::getValue)
                .forEach(statisticsOfResults::addValue);
        double errorPercent = (statisticsOfResults.getStandardDeviation() / numPopulation) * 100;
        assertThat(errorPercent, lessThan(errorPercentMax));
    }
    final List<Integer> listOfNotHit = remains.entrySet().stream().map(Map.Entry::getKey).collect(toList());
    assertThat(listOfNotHit.size(), lessThanOrEqualTo((int) (newHosts.length * (limitOfNotHitsPercent / 100))));
}

From source file:com.synopsys.integration.blackduck.codelocation.CodeLocationBatchOutput.java

public CodeLocationBatchOutput(List<T> outputs) {
    successfulCodeLocationNamesToExpectedNotificationCounts = outputs.stream().peek(this.outputs::add)
            .filter(output -> Result.SUCCESS == output.getResult())
            .filter(output -> StringUtils.isNotBlank(output.getCodeLocationName())).collect(Collectors.toMap(
                    CodeLocationOutput::getCodeLocationName, CodeLocationOutput::getExpectedNotificationCount));
}