Example usage for java.util.stream Stream empty

Introduction

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

Prototype

public static <T> Stream<T> empty() 

Source Link

Document

Returns an empty sequential Stream .

Usage

From source file:fr.cph.stock.external.impl.ExternalDataAccessImpl.java

@Override
public final Stream<Company> getCompanyDataHistory(final String yahooId, final Date from, final Date to) {
    final String startDate = SIMPLE_DATE_FORMAT.format(from);
    final Calendar cal = Calendar.getInstance();
    final String endDate = to == null ? SIMPLE_DATE_FORMAT.format(cal.getTime())
            : SIMPLE_DATE_FORMAT.format(to);
    final String request = "select * from yahoo.finance.historicaldata where symbol = \"" + yahooId
            + "\" and startDate = \"" + startDate + "\" and endDate = \"" + endDate + "\"";
    final HistoryResult historyResult = yahooGateway.getObject(request, HistoryResult.class);
    final List<fr.cph.stock.external.web.currency.history.Quote> listResult = historyResult.getQuery()
            .getResults().getQuote();/* w w w .j av  a2  s  . c  om*/
    return listResult != null
            ? listResult.stream()
                    .map(quote -> Company.builder().quote(quote.getClose()).yahooId(yahooId).build())
            : Stream.empty();
}

---

From source file:org.lightjason.agentspeak.beliefbase.view.CViewMap.java

@Nonnull
@Override//from   www. j a  v a 2s .  c  om
public final Stream<IView> root() {
    return this.hasParent() ? Stream.concat(Stream.of(this), Stream.of(this.parent()).flatMap(IView::root))
            : Stream.empty();
}

---

From source file:org.opennms.features.topology.plugins.topo.graphml.GraphMLEdgeStatusProvider.java

private GraphMLEdgeStatus computeEdgeStatus(final List<StatusScript> scripts, final GraphMLEdge edge) {
    return scripts.stream().flatMap(script -> {
        final SimpleBindings bindings = createBindings(edge);
        final StringWriter writer = new StringWriter();
        final ScriptContext context = new SimpleScriptContext();
        context.setWriter(writer);//from w w w  . ja va2s.co  m
        context.setBindings(bindings, ScriptContext.GLOBAL_SCOPE);
        try {
            LOG.debug("Executing script: {}", script);
            final GraphMLEdgeStatus status = script.eval(context);
            if (status != null) {
                return Stream.of(status);
            } else {
                return Stream.empty();
            }
        } catch (final ScriptException e) {
            LOG.error("Failed to execute script: {}", e);
            return Stream.empty();
        } finally {
            LOG.info(writer.toString());
        }
    }).reduce(GraphMLEdgeStatus::merge).orElse(null);
}

---

From source file:org.openthinclient.pkgmgr.UpdateDatabase.java

private Stream<Package> parsePackagesList(LocalPackageList localPackageList) {
    LOG.info("Processing packages for {}", localPackageList.getSource().getUrl());

    try {//from  w  w  w .j a va 2s.  co m
        return new PackagesListParser().parse(Files.newInputStream(localPackageList.getPackagesFile().toPath()))
                .stream().map(p -> {
                    p.setSource(localPackageList.getSource());
                    return p;
                });
    } catch (IOException e) {
        LOG.error("Failed to parse packages list for " + localPackageList.getSource().getUrl(), e);
        return Stream.empty();
    }
}

---

From source file:org.everit.json.schema.ObjectSchema.java

private Stream<String> getAdditionalProperties(final JSONObject subject) {
    String[] names = JSONObject.getNames(subject);
    if (names == null) {
        return Stream.empty();
    } else {/*  w ww.java2s.c  o m*/
        return Arrays.stream(names).filter(key -> !propertySchemas.containsKey(key))
                .filter(key -> !matchesAnyPattern(key));
    }
}

---

From source file:com.intuit.wasabi.repository.cassandra.impl.CassandraAssignmentsRepository.java

Stream<ExperimentUserByUserIdContextAppNameExperimentId> getUserIndexStream(String userId, String appName,
        String context) {//from  w w  w.j av  a 2s .  c  o m
    Stream<ExperimentUserByUserIdContextAppNameExperimentId> resultStream = Stream.empty();
    try {
        final Result<ExperimentUserByUserIdContextAppNameExperimentId> result = experimentUserIndexAccessor
                .selectBy(userId, appName, context);
        resultStream = StreamSupport
                .stream(Spliterators.spliteratorUnknownSize(result.iterator(), Spliterator.ORDERED), false);
    } catch (ReadTimeoutException | UnavailableException | NoHostAvailableException e) {
        throw new RepositoryException("Could not retrieve assignments for " + "experimentID = \"" + appName
                + "\" userID = \"" + userId + "\" and context " + context, e);
    }
    return resultStream;
}

---

From source file:org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetrics.java

private Stream<Timed> findTimedAnnotations(AnnotatedElement element) {
    Timed timed = AnnotationUtils.findAnnotation(element, Timed.class);
    if (timed != null) {
        return Stream.of(timed);
    }/*from   www .  j  a v  a 2s.  c  o  m*/
    TimedSet ts = AnnotationUtils.findAnnotation(element, TimedSet.class);
    if (ts != null) {
        return Arrays.stream(ts.value());
    }
    return Stream.empty();
}

---

From source file:org.lightjason.agentspeak.beliefbase.view.CViewMap.java

@Nonnull
@Override/*from ww  w. ja v  a2 s .  c o m*/
public final Stream<ILiteral> stream(final boolean p_negated, @Nullable final IPath... p_path) {
    return p_negated ? Stream.empty() : this.stream(p_path);
}

---

From source file:alfio.manager.WaitingQueueManager.java

Stream<Triple<WaitingQueueSubscription, TicketReservationWithOptionalCodeModification, ZonedDateTime>> distributeSeats(
        Event event) {//  w ww. jav  a 2s . c o  m
    int eventId = event.getId();
    List<WaitingQueueSubscription> subscriptions = waitingQueueRepository.loadAllWaiting(eventId);
    int waitingPeople = subscriptions.size();
    int waitingTickets = ticketRepository.countWaiting(eventId);
    if (waitingPeople == 0 && waitingTickets > 0) {
        ticketRepository.revertToFree(eventId);
    } else if (waitingPeople > 0 && waitingTickets > 0) {
        return distributeAvailableSeats(event, waitingPeople, waitingTickets);
    } else if (subscriptions.stream().anyMatch(WaitingQueueSubscription::isPreSales)
            && configurationManager.getBooleanConfigValue(
                    Configuration.from(event.getOrganizationId(), event.getId(), ENABLE_PRE_REGISTRATION),
                    false)) {
        return handlePreReservation(event, waitingPeople);
    }
    return Stream.empty();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• »