Example usage for java.util.stream Stream concat

Introduction

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

Prototype

public static <T> Stream<T> concat(Stream<? extends T> a, Stream<? extends T> b)

Source Link

Document

Creates a lazily concatenated stream whose elements are all the elements of the first stream followed by all the elements of the second stream.

Usage

From source file:org.onosproject.store.primitives.impl.DefaultTransactionalMapParticipant.java

@Override
protected Stream<MapUpdate<K, V>> records(Version lockVersion) {
    return Stream.concat(deleteStream(), writeStream(lockVersion));
}

From source file:net.kemitix.checkstyle.ruleset.builder.DefaultRuleReadmeLoader.java

@Override
public Stream<String> load(final Rule rule) {
    if (rule.isEnabled()) {
        final Path resolve = templateProperties.getReadmeFragments().resolve(rule.getName() + ".md");
        log.info("Loading fragment: {}", resolve);
        try {/*from  w w  w. j av a2s  .c  o m*/
            return Stream.concat(Stream.of(formatRuleHeader(rule)), Files.lines(resolve));
        } catch (IOException e) {
            throw new ReadmeFragmentNotFoundException(rule.getName(), e);
        }
    } else {
        return Stream.of(formatRuleHeader(rule), "", rule.getReason());
    }
}

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

/**
 * Starts the given process by calling process_builder.start();
 * Records the started processes pid and start date.
 *  //w w  w.j av  a 2  s .  c  o  m
 * @param process_builder
 * @throws IOException 
 * @return returns any error in _1(), the pid in _2()
 */
public static Tuple2<String, String> launchProcess(final ProcessBuilder process_builder,
        final String application_name, final DataBucketBean bucket, final String aleph_root_path,
        final Optional<Tuple2<Long, Integer>> timeout_kill) {
    try {
        if (timeout_kill.isPresent()) {
            final Stream<String> timeout_stream = Stream.of("timeout", "-s", timeout_kill.get()._2.toString(),
                    timeout_kill.get()._1.toString());
            process_builder.command(Stream.concat(timeout_stream, process_builder.command().stream())
                    .collect(Collectors.toList()));
        }

        //starts the process, get pid back
        logger.debug("Starting process: " + process_builder.command().toString());
        final Process px = process_builder.start();
        String err = null;
        String pid = null;
        if (!px.isAlive()) {
            err = "Unknown error: " + px.exitValue() + ": "
                    + process_builder.command().stream().collect(Collectors.joining(" "));
            // (since not capturing output)
        } else {
            pid = getPid(px);
            //get the date on the pid file from /proc/<pid>
            final long date = getDateOfPid(pid);
            //record pid=date to aleph_root_path/pid_manager/bucket._id/application_name
            storePid(application_name, bucket, aleph_root_path, pid, date);
        }
        return Tuples._2T(err, pid);

    } catch (Throwable t) {
        return Tuples._2T(ErrorUtils.getLongForm("{0}", t), null);
    }
}

From source file:com.cybernostics.jsp2thymeleaf.api.elements.CopyElementConverter.java

@Override
public List<Content> process(JSPParser.JspElementContext node, JSPElementNodeConverter context) {
    Optional<Element> maybeElement = createElement(node, context);
    if (maybeElement.isPresent()) {
        Element element = maybeElement.get();
        element.removeNamespaceDeclaration(XMLNS);
        element.addContent(getNewChildContent(node, context));
        addAttributes(element, node, context);
        return Stream.concat(Stream.of(element), getNewAppendedContent(node, context).stream())
                .collect(toList());//  ww w.  j a v  a 2s . c o m
    }

    return EMPTY_LIST;
}

From source file:com.github.robozonky.app.events.SessionEvents.java

@SuppressWarnings("unchecked")
static <T extends Event> Class<T> getImplementingEvent(final Class<T> original) {
    final Stream<Class<?>> provided = ClassUtils.getAllInterfaces(original).stream();
    final Stream<Class<?>> interfaces = original.isInterface() ? // interface could be extending it directly
            Stream.concat(Stream.of(original), provided) : provided;
    final String apiPackage = "com.github.robozonky.api.notifications";
    return (Class<T>) interfaces.filter(i -> Objects.equals(i.getPackage().getName(), apiPackage))
            .filter(i -> i.getSimpleName().endsWith("Event"))
            .filter(i -> !Objects.equals(i.getSimpleName(), "Event")).findFirst()
            .orElseThrow(() -> new IllegalStateException("Not an event:" + original));
}

From source file:com.create.security.RepositoryUserDetailsService.java

private List<GrantedAuthority> getGrantedAuthorities(User user) {
    return Stream.concat(getGrantedAuthoritiesForRoles(user), getGrantedAuthoritiesForPermissions(user))
            .collect(Collectors.toList());
}

From source file:de.bund.bfr.math.MultivariateOptimization.java

public static MultivariateOptimization createLodOptimizer(String formula, List<String> parameters,
        List<Double> targetValues, Map<String, List<Double>> variableValues, double levelOfDetection)
        throws ParseException {
    String sdParam = parameters.stream().collect(Collectors.joining());
    List<String> params = Stream.concat(parameters.stream(), Stream.of(sdParam)).collect(Collectors.toList());

    return new MultivariateOptimization(params, sdParam,
            new LodFunction(formula, params, variableValues, targetValues, levelOfDetection, sdParam));
}

From source file:org.sonar.server.qualityprofile.DefinedQProfileRepositoryRule.java

public DefinedQProfileRepositoryRule set(String languageKey, DefinedQProfile first, DefinedQProfile... others) {
    qProfilesbyLanguage.put(languageKey,
            Stream.concat(Stream.of(first), Arrays.stream(others)).collect(toList(1 + others.length)));
    return this;
}

From source file:org.openlmis.fulfillment.service.request.RequestHelper.java

/**
 * Split the given {@link RequestParameters} into smaller chunks.
 *//*from   w w w.  j  ava 2  s  .c  o  m*/
public static URI[] splitRequest(String url, RequestParameters queryParams, int maxUrlLength) {
    RequestParameters safeQueryParams = RequestParameters.init().setAll(queryParams);
    URI uri = createUri(url, safeQueryParams);

    if (uri.toString().length() > maxUrlLength) {
        Pair<RequestParameters, RequestParameters> split = safeQueryParams.split();

        if (null != split.getLeft() && null != split.getRight()) {
            URI[] left = splitRequest(url, split.getLeft(), maxUrlLength);
            URI[] right = splitRequest(url, split.getRight(), maxUrlLength);

            return Stream.concat(Arrays.stream(left), Arrays.stream(right)).distinct().toArray(URI[]::new);
        }
    }

    return new URI[] { uri };
}

From source file:com.yahoo.bard.webservice.druid.model.aggregation.FilteredAggregation.java

@JsonIgnore
@Override// ww  w  . ja v a 2  s .  co m
public Set<Dimension> getDependentDimensions() {
    return Stream.concat(aggregation.getDependentDimensions().stream(), getFilterDimensions().stream())
            .collect(Collectors.toCollection(LinkedHashSet::new));
}