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:spring.travel.site.services.news.NewsService.java

public CompletableFuture<Optional<List<NewsItem>>> news() {
    List<NewsItem> newsItems = newsCache.getIfPresent(newsServiceUrl);
    if (newsItems != null) {
        return some(newsItems);
    }/*from  ww w  .  ja v a2s .c  om*/
    return client
            .get(newsServiceUrl, request -> request.getHeaders().add("Accept", "text/xml"),
                    response -> Optional.of(newsDigester.from(response.getResponseBodyAsStream())))
            .handle(withFallback(Optional.<List<NewsItem>>empty()))
            .whenComplete((items, t) -> items.ifPresent(it -> {
                if (it.size() > 0) {
                    newsCache.put(newsServiceUrl, it);
                }
            }));
}

From source file:com.facebook.buck.util.unarchive.Untar.java

public static Untar zstdUnarchiver() {
    return new Untar(Optional.of(CompressorStreamFactory.ZSTANDARD));
}

From source file:io.github.resilience4j.circuitbreaker.monitoring.health.CircuitBreakerHealthIndicator.java

@Override
public Health health() {
    return Optional.of(circuitBreaker).map(this::mapBackendMonitorState).orElse(Health.up().build());
}

From source file:fi.helsinki.opintoni.service.UserNotificationServiceTest.java

@Test
public void thatUserNotificationsAreReturned() {
    defaultTeacherRequestChain().defaultCoursesWithImplementationsAndRealisations()
            .activity("teachernotifications.json");

    List<UserNotificationDto> userNotifications = userNotificationService.getUserNotifications(1L,
            Optional.empty(), Optional.of(TestConstants.TEACHER_NUMBER), Locale.ENGLISH);

    assertThat(userNotifications).hasSize(2);

    UserNotificationDto userNotificationDto = userNotifications.get(0);
    assertThat(userNotificationDto.notificationId).isEqualTo("3");
    assertThat(userNotificationDto.message).isEqualTo("has written a message");
    assertThat(userNotificationDto.read).isTrue();

    userNotificationDto = userNotifications.get(1);
    assertThat(userNotificationDto.notificationId).isEqualTo("4");
    assertThat(userNotificationDto.message).isEqualTo("has removed an event");
    assertThat(userNotificationDto.read).isFalse();
}

From source file:org.trustedanalytics.cloud.cc.api.CcOrg.java

@JsonIgnore
public String getName() {
    Optional<CcOrg> org = Optional.of(this);
    return org.map(CcOrg::getEntity).map(CcOrgEntity::getName).orElse(null);
}

From source file:nu.yona.server.messaging.service.DisclosureResponseMessageDto.java

public static DisclosureResponseMessageDto createInstance(DisclosureResponseMessage messageEntity,
        SenderInfo senderInfo) {/*from w w  w .  j  a  v a 2 s  .c o  m*/
    GoalConflictMessage targetGoalConflictMessage = messageEntity.getTargetGoalConflictMessage();
    return new DisclosureResponseMessageDto(messageEntity.getId(), messageEntity.getCreationTime(),
            messageEntity.isRead(), senderInfo, messageEntity.getStatus(), messageEntity.getMessage(),
            Optional.of(targetGoalConflictMessage.getId()), targetGoalConflictMessage.getGoal().getId(),
            targetGoalConflictMessage.getActivity().getStartTime().toLocalDate());
}

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

@Override
protected Optional<String> getMeasureUnitNodeName() {
    return Optional.of("BPUnit");
}

From source file:alfio.manager.EuVatChecker.java

static BiFunction<ConfigurationManager, OkHttpClient, Optional<VatDetail>> performCheck(String vatNr,
        String countryCode, int organizationId) {
    return (configurationManager, client) -> {
        if (StringUtils.isNotEmpty(vatNr) && StringUtils.length(countryCode) == 2
                && checkingEnabled(configurationManager, organizationId)) {
            Request request = new Request.Builder().url(apiAddress(configurationManager) + "?country="
                    + countryCode.toUpperCase() + "&number=" + vatNr).get().build();
            try (Response resp = client.newCall(request).execute()) {
                if (resp.isSuccessful()) {
                    return Optional.of(getVatDetail(resp, vatNr, countryCode,
                            organizerCountry(configurationManager, organizationId)));
                } else {
                    return Optional.empty();
                }/*from w w  w  .java2 s  .co m*/
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return Optional.empty();
    };
}

From source file:com.github.steveash.guavate.GuavateTest.java

@Test
public void test_stream_Optional() {
    Optional<String> optional = Optional.of("foo");
    List<String> test1 = Guavate.stream(optional).collect(Collectors.toList());
    assertEquals(test1, ImmutableList.of("foo"));

    Optional<String> empty = Optional.empty();
    List<String> test2 = Guavate.stream(empty).collect(Collectors.toList());
    assertEquals(test2, ImmutableList.of());
}

From source file:com.teradata.tempto.query.JdbcConnectivityParamsState.java

@Override
public Optional<String> getName() {
    return Optional.of(name);
}