Example usage for java.util.stream Stream collect

Introduction

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

Prototype

<R, A> R collect(Collector<? super T, A, R> collector);

Source Link

Document

Performs a mutable reduction operation on the elements of this stream using a Collector .

Usage

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

@Override
public List<Group> listGroups() throws UserManagerException {
    Collection<Identity> identities = identityDao.getIdentities().values();
    Stream<Group> filter = identities.stream()//
            .filter(grp -> grp instanceof Group)//
            .map(g -> (Group) g);
    List<Group> groups = filter.collect(Collectors.toList());
    Collections.sort(groups);//w w w. java2s.co m
    return groups;
}

From source file:org.thingsboard.server.msa.DockerComposeExecutor.java

public void invokeCompose() {
    // bail out early
    if (!CommandLine.executableExists(COMPOSE_EXECUTABLE)) {
        throw new ContainerLaunchException(
                "Local Docker Compose not found. Is " + COMPOSE_EXECUTABLE + " on the PATH?");
    }/*from w  w  w .j  a va 2 s .  c  om*/
    final Map<String, String> environment = Maps.newHashMap(env);
    environment.put(ENV_PROJECT_NAME, identifier);
    final Stream<String> absoluteDockerComposeFilePaths = composeFiles.stream().map(File::getAbsolutePath)
            .map(Objects::toString);
    final String composeFileEnvVariableValue = absoluteDockerComposeFilePaths
            .collect(joining(File.pathSeparator + ""));
    log.debug("Set env COMPOSE_FILE={}", composeFileEnvVariableValue);
    final File pwd = composeFiles.get(0).getAbsoluteFile().getParentFile().getAbsoluteFile();
    environment.put(ENV_COMPOSE_FILE, composeFileEnvVariableValue);
    log.info("Local Docker Compose is running command: {}", cmd);
    final List<String> command = Splitter.onPattern(" ").omitEmptyStrings()
            .splitToList(COMPOSE_EXECUTABLE + " " + cmd);
    try {
        new ProcessExecutor().command(command).redirectOutput(Slf4jStream.of(log).asInfo())
                .redirectError(Slf4jStream.of(log).asError()).environment(environment).directory(pwd)
                .exitValueNormal().executeNoTimeout();
        log.info("Docker Compose has finished running");
    } catch (InvalidExitValueException e) {
        throw new ContainerLaunchException("Local Docker Compose exited abnormally with code "
                + e.getExitValue() + " whilst running command: " + cmd);
    } catch (Exception e) {
        throw new ContainerLaunchException("Error running local Docker Compose command: " + cmd, e);
    }
}

From source file:org.cryptomator.frontend.webdav.jackrabbitservlet.DavFolder.java

@Override
public DavResourceIterator getMembers() {
    final Stream<DavFolder> folders = node.folders().map(this::folderToDavFolder);
    final Stream<DavFile> files = node.files().map(this::fileToDavFile);
    final Stream<DavResource> members = AutoClosingStream.from(Stream.concat(folders, files));
    return new DavResourceIteratorImpl(members.collect(Collectors.toList()));
}

From source file:io.yields.math.framework.kpi.ExplorerJsonExporter.java

private <T> Values toValues(PropertyVerifications<T> verifications) {
    Stream<PropertyVerification<T>> stream = verifications.getResults().stream()
            .filter(verification -> verification.getProperty().isPresent());
    Map<String, Object> map = stream
            .collect(Collectors.toMap(verification -> verification.getProperty().get().getLabel(),
                    propertyVerification -> propertyVerification.getResult().getCode()));
    return new Values(map);
}

From source file:org.trellisldp.rdfa.HtmlSerializer.java

/**
 * Send the content to an output stream.
 *
 * @param triples the triples//ww  w  . j  a  va 2  s  . c o m
 * @param out the output stream
 * @param subject the subject
 */
@Override
public void write(final Stream<Triple> triples, final OutputStream out, final String subject) {
    final Writer writer = new OutputStreamWriter(out, UTF_8);
    try {
        template.execute(writer,
                new HtmlData(namespaceService, subject, triples.collect(toList()), css, js, icon)).flush();
    } catch (final IOException ex) {
        throw new UncheckedIOException(ex);
    }
}

From source file:org.apache.geode.management.internal.cli.util.LogExporter.java

private List<Path> findFiles(Path workingDir, Predicate<Path> fileSelector) throws IOException {
    Stream<Path> selectedFiles/* = null */;
    if (!workingDir.toFile().isDirectory()) {
        return Collections.emptyList();
    }// w w  w  .j  a  va2 s  .  c  o  m
    selectedFiles = Files.list(workingDir).filter(fileSelector).filter(this.logFilter::acceptsFile);

    return selectedFiles.collect(toList());
}

From source file:com.ikanow.aleph2.data_model.utils.CrudUtils.java

/** Returns a "multi" query component where all of the QueryComponents in the list (and added via andAlso) must match (NOTE: each component *internally* can use ORs or ANDs)
 * @param components - a stream of query components
 * @return the "multi" query component "helper"
 *///from  w ww  .  j av a2  s. com
public static <T> MultiQueryComponent<T> allOf(final Stream<QueryComponent<T>> components) {
    return new MultiQueryComponent<T>(Operator.all_of, components.collect(Collectors.toList()));
}

From source file:com.ikanow.aleph2.data_model.utils.CrudUtils.java

/** Returns a "multi" query component where all of the QueryComponents in the list (and added via andAlso) must match (NOTE: each component *internally* can use ORs or ANDs)
 * @param components - a stream of query components
 * @return the "multi" query component "helper"
 *///from w  w  w  . j  av a  2 s.  c o m
public static <T> MultiQueryComponent<T> anyOf(final Stream<QueryComponent<T>> components) {
    return new MultiQueryComponent<T>(Operator.any_of, components.collect(Collectors.toList()));
}

From source file:org.lightjason.agentspeak.common.CPath.java

/**
 * ctor/*from w  w  w  .  j  a  va  2s.  c  om*/
 *
 * @param p_stream string collection
 */
public CPath(final Stream<String> p_stream) {
    m_path = p_stream.collect(CPath.collectorfactory());
    this.normalize();
}

From source file:org.ajoberstar.reckon.core.git.GitInventorySupplier.java

private TaggedVersion findBase(RevWalk walk, RevCommit head, Stream<TaggedVersion> versions)
        throws IOException {
    walk.reset();//from ww  w  .  j a v  a 2s .  c  o  m
    walk.setRevFilter(RevFilter.ALL);
    walk.markStart(head);

    Map<RevCommit, List<TaggedVersion>> versionsByCommit = versions
            .collect(Collectors.groupingBy(TaggedVersion::getCommit));

    Stream.Builder<List<TaggedVersion>> builder = Stream.builder();

    for (RevCommit commit : walk) {
        List<TaggedVersion> matches = versionsByCommit.get(commit);
        if (matches != null) {
            // Parents can't be "nearer". Exclude them to avoid extra walking.
            for (RevCommit parent : commit.getParents()) {
                walk.markUninteresting(parent);
            }
            builder.accept(matches);
        }
    }

    return builder.build().flatMap(List::stream).max(Comparator.comparing(TaggedVersion::getVersion))
            .orElse(new TaggedVersion(Versions.VERSION_0, null));
}