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:com.formkiq.core.form.bean.FormFieldMapper.java

/**
 * Transform {@link FormJSON} to a Map of {@link FormJSONField}.
 * @param form {@link FormJSON}//from w w w .j a  va  2 s  . co m
 * @return {@link Map}
 */
public static Map<String, FormJSONField> transformToValueMap(final FormJSON form) {

    return form.getSections().stream().flatMap(s -> s.getFields().stream())
            .filter(f -> !isEmpty(f.getValuekey()) && !f.isHide())
            .collect(Collectors.toMap(f -> f.getValuekey(), f -> f));
}

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From source file:com.netflix.spinnaker.clouddriver.kubernetes.v2.caching.agent.KubernetesStatefulSetCachingAgent.java

@Override
protected Map<KubernetesManifest, List<KubernetesManifest>> loadSecondaryResourceRelationships(
        List<KubernetesManifest> primaryResourceList) {
    BiFunction<String, String, String> manifestName = (namespace, name) -> namespace + ":" + name;

    Map<String, KubernetesManifest> services = namespaces.stream()
            .map(n -> credentials.list(KubernetesKind.SERVICE, n)).flatMap(Collection::stream)
            .collect(Collectors.toMap((m) -> manifestName.apply(m.getNamespace(), m.getName()), (m) -> m));

    Map<KubernetesManifest, List<KubernetesManifest>> result = new HashMap<>();

    for (KubernetesManifest manifest : primaryResourceList) {
        String serviceName = KubernetesStatefulSetHandler.serviceName(manifest);
        if (StringUtils.isEmpty(serviceName)) {
            continue;
        }/*from   ww  w  .  j a v  a 2s .co m*/

        String key = manifestName.apply(manifest.getNamespace(), serviceName);

        if (!services.containsKey(key)) {
            continue;
        }

        KubernetesManifest service = services.get(key);
        result.put(manifest, Collections.singletonList(service));
    }

    return result;
}

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From source file:com.netflix.spinnaker.igor.config.TravisConfig.java

@Bean
public Map<String, TravisService> travisMasters(BuildMasters buildMasters, TravisCache travisCache,
        IgorConfigurationProperties igorConfigurationProperties, @Valid TravisProperties travisProperties,
        ObjectMapper objectMapper, ArtifactDecorator artifactDecorator) {
    log.info("creating travisMasters");

    Map<String, TravisService> travisMasters = (travisProperties == null
            ? new ArrayList<TravisProperties.TravisHost>()
            : travisProperties.getMasters()).stream().map(host -> {
                String travisName = "travis-" + host.getName();
                log.info("bootstrapping {} as {}", host.getAddress(), travisName);

                TravisClient client = travisClient(host.getAddress(),
                        igorConfigurationProperties.getClient().getTimeout(), objectMapper);
                return travisService(travisName, host.getBaseUrl(), host.getGithubToken(),
                        host.getNumberOfRepositories(), client, travisCache, artifactDecorator,
                        (travisProperties == null ? null : travisProperties.getRegexes()));
            }).collect(Collectors.toMap(TravisService::getGroupKey, Function.identity()));

    buildMasters.getMap().putAll(travisMasters);
    return travisMasters;
}

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From source file:com.yahoo.bard.webservice.config.ModuleLoader.java

/**
 * Build the graph of configurations and dependencies.
 *
 * @return A graph whose vertices are Configurations and whose edges are dependencies between them.
 *
 * @throws SystemConfigException If any errors occur while parsing the configurations into a graph.
 */// www  .  j a  v a  2s.  c o  m
private ConfigurationGraph loadConfigurationGraph() throws SystemConfigException {
    try {
        Map<Configuration, String> configurationFileNameMap = configResourceLoader
                .loadResourcesWithName(MODULE_CONFIG_FILE_NAME)
                .collect(Collectors.toMap(configResourceLoader::loadConfigFromResource, Resource::getFilename));
        return new ConfigurationGraph(configurationFileNameMap, ModuleLoader::validateModuleName);

    } catch (IOException e) {
        LOG.error(MODULE_IO_EXCEPTION.logFormat(e.getMessage()));
        throw new SystemConfigException(MODULE_IO_EXCEPTION.format(e.getMessage()), e);
    }
}

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From source file:mtsar.processors.answer.KOSAggregator.java

@Override
@Nonnull/*from w w w  .  ja  va 2s .  c  o  m*/
public Map<Integer, AnswerAggregation> aggregate(@Nonnull Collection<Task> tasks) {
    requireNonNull(stage, "the stage provider should not provide null");
    checkArgument(tasks.stream().allMatch(SINGLE_BINARY_TYPE),
            "tasks should be of the type single and have only two possible answers");
    if (tasks.isEmpty())
        return Collections.emptyMap();

    final List<Answer> answers = answerDAO.listForStage(stage.getId());
    if (answers.isEmpty())
        return Collections.emptyMap();

    final Map<Integer, Task> taskMap = taskDAO.listForStage(stage.getId()).stream().filter(SINGLE_BINARY_TYPE)
            .collect(Collectors.toMap(Task::getId, Function.identity()));

    final Map<Integer, BiMap<String, Short>> answerIndex = taskMap.values().stream()
            .collect(Collectors.toMap(Task::getId, task -> {
                final BiMap<String, Short> map = HashBiMap.create(2);
                map.put(task.getAnswers().get(0), (short) -1);
                map.put(task.getAnswers().get(1), (short) +1);
                return map;
            }));

    /* rows are tasks IDs, columns are worker IDs, values are answers */
    final Table<Integer, Integer, Short> graph = HashBasedTable.create();

    for (final Answer answer : answers) {
        if (!answer.getType().equalsIgnoreCase(AnswerDAO.ANSWER_TYPE_ANSWER))
            continue;
        graph.put(answer.getTaskId(), answer.getWorkerId(),
                answerIndex.get(answer.getTaskId()).get(answer.getAnswers().get(0)));
    }

    final Map<Integer, Double> estimations = converge(graph, getKMax());
    return estimations.entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, estimation -> {
        final String answer = answerIndex.get(estimation.getKey()).inverse()
                .get(estimation.getValue() < 0 ? (short) -1 : (short) +1);
        return new AnswerAggregation.Builder().setTask(taskMap.get(estimation.getKey())).addAnswers(answer)
                .build();
    }));
}

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From source file:com.formkiq.core.form.service.FormCalculatorServiceImpl.java

/**
 * Apply values to forms as 'formname'!id.
 * @param archive {@link ArchiveDTO}//from  w  w  w.ja  v  a 2  s.c om
 * @param values {@link Map}
 * @throws IOException IOException
 */
private void appleFieldValuesById(final ArchiveDTO archive, final Map<String, String[]> values)
        throws IOException {

    // TODO handle multiple forms with the same name.
    Map<String, FormJSON> formMap = archive.getForms().values().stream()
            .collect(Collectors.toMap(FormJSON::getName, s -> s));

    for (Map.Entry<String, String[]> e : values.entrySet()) {

        String[] split = e.getKey().split("!");

        if (split.length == 2) {

            String formname = stripQuotes(split[0]);

            int id = Integer.parseInt(split[1]);

            FormJSON form = formMap.get(formname);
            if (form != null) {

                Optional<FormJSONField> field = findField(form, id);

                if (field.isPresent()) {
                    applyValueToField(archive, form, field.get(), e.getValue());
                }
            }
        }
    }
}

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From source file:mtsar.processors.meta.ZenCrowd.java

@Nonnull
@Override/*from w  w  w.  j  a  va 2 s  .c  o m*/
public Map<Integer, WorkerRanking> rank(@Nonnull Collection<Worker> workers) {
    requireNonNull(stage, "the stage provider should not provide null");
    if (workers.isEmpty())
        return Collections.emptyMap();
    final Map<Integer, Worker> workerIds = workers.stream()
            .collect(Collectors.toMap(Worker::getId, Function.identity()));
    final Models.ZenModel<Integer, Integer, String> zenModel = compute(stage, answerDAO, getTaskMap())
            .getZenModel();
    final ZenCrowdEM<Integer, Integer, String> zenCrowd = new ZenCrowdEM<>(zenModel);
    zenCrowd.computeLabelEstimates();
    try {
        @SuppressWarnings("unchecked")
        final Map<Integer, Double> reliability = (Map<Integer, Double>) FieldUtils.readField(zenCrowd,
                "workerReliabilityMap", true);
        final Map<Integer, WorkerRanking> rankings = reliability.entrySet().stream()
                .filter(entry -> workerIds.containsKey(entry.getKey()))
                .collect(Collectors.toMap(Map.Entry::getKey, entry -> new WorkerRanking.Builder()
                        .setWorker(workerIds.get(entry.getKey())).setReputation(entry.getValue()).build()));
        return rankings;
    } catch (IllegalAccessException ex) {
        throw new RuntimeException(ex);
    }
}

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From source file:de.flashpixx.rrd_antlr4.generator.IBaseGenerator.java

/**
 * ctor//w  w  w. j  av  a2  s.  c  o  m
 *
 * @param p_baseoutputdirectory base output directory
 * @param p_templates array with exporting templates
 * @param p_imports set with imported grammar files
 * @param p_docuclean set with documentation strings
 */
protected IBaseGenerator(final File p_baseoutputdirectory, final Set<File> p_imports,
        final Set<String> p_docuclean, final Set<ETemplate> p_templates) {
    m_docuclean = p_docuclean;
    m_templates = p_templates;
    m_baseoutput = p_baseoutputdirectory;
    m_imports = Collections.unmodifiableMap(p_imports.parallelStream()
            .collect(Collectors.toMap(i -> FilenameUtils.removeExtension(i.getName()), i -> i)));
}

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From source file:de.wpsverlinden.dupfind.FileIndexer.java

private void recAddFilesInDir(File dir) {
    try {/* ww w  . j av  a2  s  .c o  m*/
        Map<String, FileEntry> collect = Files.walk(Paths.get(dir.getCanonicalPath())).parallel()
                .filter(Files::isRegularFile).map((e) -> e.toFile()).filter((e) -> {
                    FileEntry fi = fileIndex.get(getPath(e));
                    return fi == null || fi.getLastModified() < e.lastModified();
                }).collect(Collectors.toMap((e) -> getPath(e),
                        (e) -> new FileEntry(getPath(e), e.length(), e.lastModified(), "")));
        fileIndex.putAll(collect);
    } catch (IOException ex) {
        System.err.println(ex);
    }
}

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From source file:newcontroller.handler.impl.DefaultRequest.java

@Override
public Map<String, ?> model() {
    return Collections.list(this.request.getAttributeNames()).stream()
            .collect(Collectors.toMap(Function.identity(), this.request::getAttribute));
}

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