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:com.addthis.bundle.util.AutoField.java

default Optional<String> getString(Bundle bundle) {
    ValueObject valueObject = getValue(bundle);
    if (valueObject == null) {
        return Optional.empty();
    }//from w ww.  j  a va2 s. c o  m
    return Optional.of(valueObject.asString().asNative());
}

From source file:com.epam.ta.reportportal.database.entity.item.issue.ExternalSystemType.java

public static Optional<ExternalSystemType> findByName(String name) {
    for (ExternalSystemType type : ExternalSystemType.values()) {
        if (type.name().equalsIgnoreCase(name)) {
            return Optional.of(type);
        }/*  ww w  . ja v a  2 s. c o m*/
    }
    return Optional.empty();
}

From source file:com.willwinder.universalgcodesender.connection.ConnectionFactory.java

public static Optional<Connection> getConnection(ConnectionDriver connectionDriver) {
    if (connectionDriver == ConnectionDriver.JSERIALCOMM) {
        return Optional.of(new JSerialCommConnection());
    } else if (connectionDriver == ConnectionDriver.JSSC) {
        return Optional.of(new JSSCConnection());
    } else if (connectionDriver == ConnectionDriver.TCP) {
        return Optional.of(new TCPConnection());
    }/*from w ww.  j  a va 2  s .  co m*/
    return Optional.empty();
}

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

public static Untar gzipUnarchiver() {
    return new Untar(Optional.of(CompressorStreamFactory.GZIP));
}

From source file:io.github.retz.mesosc.MesosHTTPFetcher.java

public static Optional<String> sandboxDownloadUri(String master, String slaveId, String frameworkId,
        String executorId, String containerId, String path) {
    Optional<String> base = sandboxUri("download", master, slaveId, frameworkId, executorId, containerId,
            RETRY_LIMIT);//from   www  .j a va2  s  .c o m
    if (base.isPresent()) {
        try {
            String encodedPath = URLEncoder.encode(path, UTF_8.toString());
            return Optional.of(base.get() + encodedPath);
        } catch (UnsupportedEncodingException e) {
            return Optional.empty();
        }
    }
    return Optional.empty();
}

From source file:am.ik.categolj3.api.git.GitProperties.java

public Optional<UsernamePasswordCredentialsProvider> credentialsProvider() {
    if (username == null || password == null) {
        return Optional.empty();
    }/*from www.  j  ava  2 s  .  c om*/
    return Optional.of(new UsernamePasswordCredentialsProvider(username, password));
}

From source file:org.openmhealth.shim.jawbone.mapper.JawboneHeartRateDataPointMapper.java

@Override
protected Optional<HeartRate> getMeasure(JsonNode listEntryNode) {

    Long restingHeartRate = asRequiredLong(listEntryNode, "resting_heartrate");

    HeartRate.Builder heartRateBuilder = new HeartRate.Builder(restingHeartRate)
            .setTemporalRelationshipToPhysicalActivity(AT_REST);

    setEffectiveTimeFrame(heartRateBuilder, listEntryNode);

    return Optional.of(heartRateBuilder.build());
}

From source file:ru.mera.samples.infrastructure.aop.BeforeAfterLogAdvice.java

@Before("inImageRepositoryEndpoint()")
public void before(JoinPoint joinPoint) {
    final String[] principals = new String[1];
    Optional.of(SecurityContextHolder.getContext())
            .ifPresent(securityContext -> Optional.of(securityContext.getAuthentication())
                    .ifPresent(authentication -> Optional.of(authentication.getPrincipal())
                            .ifPresent(o -> principals[0] = o.toString())));
    logger.info("Before method: " + joinPoint.getSignature().getName() + " by user " + principals);
}

From source file:co.runrightfast.component.events.impl.ComponentEventFactoryImpl.java

@Override
public ComponentEvent componentEvent(@NonNull final Event event, final String... tags) {
    final ComponentEventImpl.ComponentEventImplBuilder builder = ComponentEventImpl.builder()
            .componentId(componentId).event(event);

    if (ArrayUtils.isNotEmpty(tags)) {
        return builder.tags(Optional.of(ImmutableSet.copyOf(tags))).build();
    }/* w  w  w.  j  av a  2  s.com*/

    return builder.build();
}