Example usage for java.util Optional of

Introduction

In this page you can find the example usage for java.util Optional of.

Prototype

public static <T> Optional<T> of(T value)

Source Link

Document

Returns an Optional describing the given non- null value.

Usage

From source file:org.openmhealth.shim.ihealth.mapper.IHealthSleepDurationDataPointMapper.java

@Override
protected Optional<DataPoint<SleepDuration>> asDataPoint(JsonNode listEntryNode,
        Integer measureUnitMagicNumber) {

    SleepDuration.Builder sleepDurationBuilder = new SleepDuration.Builder(
            new DurationUnitValue(DurationUnit.MINUTE, asRequiredBigDecimal(listEntryNode, "HoursSlept")));

    Optional<Long> startTime = asOptionalLong(listEntryNode, "StartTime");
    Optional<Long> endTime = asOptionalLong(listEntryNode, "EndTime");

    if (startTime.isPresent() && endTime.isPresent()) {

        Optional<String> timeZone = asOptionalString(listEntryNode, "TimeZone");

        if (timeZone.isPresent()) {

            sleepDurationBuilder.setEffectiveTimeFrame(ofStartDateTimeAndEndDateTime(
                    getDateTimeWithCorrectOffset(startTime.get(), ZoneOffset.of(timeZone.get())),
                    getDateTimeWithCorrectOffset(endTime.get(), ZoneOffset.of(timeZone.get()))));
        }//from  w  w w  .j  a va  2  s. com
    }

    getUserNoteIfExists(listEntryNode).ifPresent(sleepDurationBuilder::setUserNotes);

    SleepDuration sleepDuration = sleepDurationBuilder.build();

    asOptionalBigDecimal(listEntryNode, "Awaken")
            .ifPresent(awaken -> sleepDuration.setAdditionalProperty("wakeup_count", awaken));

    return Optional.of(new DataPoint<>(createDataPointHeader(listEntryNode, sleepDuration), sleepDuration));
}

From source file:tech.beshu.ror.integration.JwtAuthTests.java

@Test
public void acceptValidTokentWithUserClaimAndCustomHeader() throws Exception {
    int sc = test(makeToken(KEY, makeClaimMap(USER_CLAIM, "user")), Optional.of("x-custom-header"), false);
    assertEquals(200, sc);/*from  w w w.  j a v a2  s  . co  m*/
}

From source file:br.com.blackhubos.eventozero.updater.github.searcher.GitHubSearcher.java

@Override
public Optional<Version> getLatestVersion() {
    try {//from  www .  j a v  a2 s.  com
        // Conecta ao URL de ultimas verses
        Optional<Collection<Version>> versions = connect(Optional.of(LATEST_PATH));
        // Verifica se h alguma
        if (versions.isPresent()) {
            // Retorna a primeira
            Iterator<Version> versionIterator = versions.get().iterator();
            return Optional.of(versionIterator.next());
        }
    } catch (IOException | ParseException | java.text.ParseException e) {
        e.printStackTrace();
    }
    return Optional.empty();
}

From source file:io.mandrel.cluster.node.impl.MongoNodeRepository.java

@Override
@SneakyThrows(IOException.class)
public Optional<Node> get(String id) {
    Document doc = collection.find(new Document("_id", id)).first();
    return doc == null ? Optional.empty() : Optional.of(mapper.readValue(doc.toJson(), Node.class));
}

From source file:com.amazonaws.service.apigateway.importer.config.AwsConfig.java

private Optional<String> loadRegion() {
    String file = System.getProperty("user.home") + "/.aws/config";

    boolean foundProfile = false;
    try (BufferedReader br = new BufferedReader(new FileReader(new File(file)))) {
        String line;/*from   w  ww  .  j av a 2s.com*/
        String region;
        Pattern regionPat = Pattern.compile("[a-z]{2}+-[a-z]{2,}+-[0-9]");
        Matcher regionMat;
        Integer eqPos;

        while ((line = br.readLine()) != null) {

            if (line.startsWith("[") && line.contains(this.profile)) {
                foundProfile = true;
            }

            if (foundProfile && line.startsWith("region")) {
                eqPos = line.indexOf("=");
                region = line.substring(eqPos + 1, line.length()).trim();
                regionMat = regionPat.matcher(region);
                if (!regionMat.matches()) {
                    LOG.error("Region does not match '[a-z]{2}+-[a-z]{2,}+-[0-9]': " + region);
                    throw new RuntimeException("Region does not match '[a-z]{2}+-[a-z]{2,}+-[0-9]'" + region);
                }
                return Optional.of(region);
            }
        }
    } catch (Throwable t) {
        throw new RuntimeException("Could not load configuration. Please run 'aws configure'");
    }

    return Optional.empty();
}

From source file:org.jspare.jsdbc.JsdbcTransportImpl.java

@Override
public String execute(DataSource datasource, Credential credential, Optional<Domain> domain, String operation,
        int method, String data) throws JsdbcException {

    if (datasource == null) {

        throw new JsdbcException("DataSource not loaded");
    }/*  w  w w  .ja v  a 2 s .  c om*/

    try {

        Request request = null;
        org.apache.http.client.fluent.Response response = null;

        String uriAddress = getUrlConnection(datasource, operation,
                Optional.of(domain.orElse(Domain.of(StringUtils.EMPTY)).domain()));
        if (method == RETRIEVE) {
            request = Request.Get(new URIBuilder(uriAddress).build().toString());
        } else if (method == SEND) {
            request = Request.Post(new URIBuilder(uriAddress).build().toString()).bodyString(data,
                    ContentType.APPLICATION_JSON);
        } else {
            throw new JsdbcException("Method called is not mapped");
        }
        request.addHeader(AGENT_KEY, AGENT);

        response = buildAuthentication(request, datasource, credential).execute();

        HttpResponse httpResponse = response.returnResponse();

        int statusCode = httpResponse.getStatusLine().getStatusCode();
        if (statusCode < HttpStatus.SC_OK || statusCode >= HttpStatus.SC_MULTIPLE_CHOICES) {

            if (statusCode == HttpStatus.SC_BAD_REQUEST) {

                throw new JsdbcException("Authorization error, validate your credentials.");
            }
            if (statusCode == HttpStatus.SC_FORBIDDEN) {

                throw new JsdbcException("Forbidden access, validate your user roles.");
            }

            String content = IOUtils.toString(httpResponse.getEntity().getContent());

            ErrorResult result = my(Serializer.class).fromJSON(content, ErrorResult.class);
            throw new CommandFailException(result);
        }

        return IOUtils.toString(httpResponse.getEntity().getContent());

    } catch (Exception e) {

        log.error(e.getMessage(), e);
        throw new JsdbcException("JSDB Server Error");
    }
}

From source file:com.ikanow.aleph2.analytics.storm.assets.PassthroughTopology.java

@Override
public Tuple2<Object, Map<String, String>> getTopologyAndConfiguration(final DataBucketBean bucket,
        final IEnrichmentModuleContext context) {
    final TopologyBuilder builder = new TopologyBuilder();

    final Collection<Tuple2<BaseRichSpout, String>> entry_points = context
            .getTopologyEntryPoints(BaseRichSpout.class, Optional.of(bucket));

    //DEBUG/*from w ww  . jav a 2  s  .  com*/
    _logger.debug("Passthrough topology: loaded: "
            + entry_points.stream().map(x -> x.toString()).collect(Collectors.joining(":")));

    entry_points.forEach(spout_name -> builder.setSpout(spout_name._2(), spout_name._1()));
    entry_points.stream()
            .reduce(builder.setBolt(BOLT_NAME,
                    context.getTopologyStorageEndpoint(BaseRichBolt.class, Optional.of(bucket))),
                    (acc, v) -> acc.localOrShuffleGrouping(v._2()), (acc1, acc2) -> acc1 // (not possible in practice)
    );

    return Tuples._2T(builder.createTopology(), Collections.emptyMap());
}

From source file:com.siemens.sw360.fossology.ssh.JSchSessionProvider.java

private Optional<Session> pollCachedSession() {
    Session session = sessions.poll();/*  ww w  .ja  va  2 s  .  c o m*/
    if (session != null && session.isConnected()) {
        return Optional.of(session);
    } else {
        return Optional.empty();
    }
}

From source file:org.openmhealth.shim.fitbit.mapper.FitbitSleepDurationDataPointMapper.java

@Override
protected Optional<DataPoint<SleepDuration>> asDataPoint(JsonNode node) {

    DurationUnitValue unitValue = new DurationUnitValue(MINUTE, asRequiredDouble(node, "minutesAsleep"));
    SleepDuration.Builder sleepDurationBuilder = new SleepDuration.Builder(unitValue);

    Optional<LocalDateTime> localStartTime = asOptionalLocalDateTime(node, "startTime");

    if (localStartTime.isPresent()) {

        OffsetDateTime offsetStartDateTime = combineDateTimeAndTimezone(localStartTime.get());
        Optional<Double> timeInBed = asOptionalDouble(node, "timeInBed");

        if (timeInBed.isPresent()) {
            sleepDurationBuilder.setEffectiveTimeFrame(TimeInterval.ofStartDateTimeAndDuration(
                    offsetStartDateTime, new DurationUnitValue(MINUTE, timeInBed.get())));
        } else {/*ww w. j ava2 s .c o  m*/
            // in this case, there is no "time in bed" value, however we still have a start time, so we can set
            // the data point to a single date time point
            sleepDurationBuilder.setEffectiveTimeFrame(offsetStartDateTime);
        }
    }

    SleepDuration measure = sleepDurationBuilder.build();

    Optional<Long> externalId = asOptionalLong(node, "logId");

    return Optional.of(newDataPoint(measure, externalId.orElse(null)));
}

From source file:net.minecraftforge.oredict.DyeUtils.java

/**
 * Get a dye's color.//  ww w. j av a2  s  . c om
 * @param stack the item stack
 * @return an {@link Optional} holding the dye color if present, or an empty {@link Optional} otherwise
 */
public static Optional<EnumDyeColor> colorFromStack(ItemStack stack) {
    final OptionalInt meta = metaFromStack(stack);
    return meta.isPresent() ? Optional.of(EnumDyeColor.byMetadata(meta.getAsInt())) : Optional.empty();
}