Example usage for java.util Optional ofNullable

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static <T> Optional<T> ofNullable(T value)

Source Link

Document

Returns an Optional describing the given value, if non- null , otherwise returns an empty Optional .

Usage

From source file:me.adaptive.core.data.api.UserEntityService.java

public Optional<UserEntity> findOne(Long id) {
    return Optional.ofNullable(userRepository.findOne(id));
}

From source file:org.zalando.riptide.ContentTypeSelector.java

@Override
public Optional<MediaType> attributeOf(final ClientHttpResponse response) {
    return Optional.ofNullable(response.getHeaders().getContentType());
}

From source file:alfio.controller.support.SessionUtil.java

public static Optional<String> retrieveSpecialPriceSessionId(HttpServletRequest request) {
    return Optional.ofNullable((String) request.getSession().getAttribute(SPECIAL_PRICE_CODE_SESSION_ID));
}

From source file:com.netflix.spinnaker.clouddriver.artifacts.config.BasicAuth.java

default Optional<String> getBasicAuthHeader() {
    String usernamePassword = null;
    if (StringUtils.isNotEmpty(getUsernamePasswordFile())) {
        usernamePassword = CredentialReader.credentialsFromFile(getUsernamePasswordFile());
    } else if (StringUtils.isNotEmpty(getUsername()) && StringUtils.isNotEmpty(getPassword())) {
        usernamePassword = getUsername() + ":" + getPassword();
    }//from   w w  w  .j  a v  a2  s  . c o m

    return Optional.ofNullable(usernamePassword).map(s -> "Basic " + Base64.encodeBase64String(s.getBytes()));
}

From source file:com.largecode.interview.rustem.service.UsersServiceImpl.java

@Override
public Optional<User> getUserById(long id) {
    LOGGER.debug("Getting user={}", id);
    return Optional.ofNullable(userRepository.findOne(id));
}

From source file:edu.jhu.hlt.concrete.ingesters.alnc.ALNCIngester.java

public ALNCIngester(Path path) throws IngestException {
    this.ts = Timing.currentLocalTime();
    this.path = path;
    try {/*from  w  w w.  j  ava 2  s . c om*/
        Optional<String> inferredType = Optional.ofNullable(Files.probeContentType(this.path));
        String ft = inferredType.orElse("unk");
        if (ft.contains("bzip"))
            this.conv = new ALNCFileConverter(new BZip2CompressorInputStream(Files.newInputStream(this.path)));
        else
            this.conv = new ALNCFileConverter(Files.newInputStream(this.path));
    } catch (IOException e) {
        throw new IngestException(e);
    }
}

From source file:org.wallerlab.yoink.service.request.JmsRequestReader.java

@Override
public String read() throws Exception, UnexpectedInputException, ParseException, NonTransientResourceException {
    while (jmsResquestReaderServiceRunning) {
        item = Optional.ofNullable(jmsItemReader.read());
        if (!item.isPresent()) {
            Thread.sleep(1000);/*from w w  w . ja  v a2  s . c o  m*/
        } else
            break;
    }
    return item.get();
}

From source file:com.create.batch.processor.TicketUpdateItemProcessor.java

@Override
public Ticket process(final Ticket item) throws Exception {
    log.debug("processing : {}", item);
    final Ticket ticket = Optional.ofNullable(ticketRepository.findByTag(item.getTag())).map(i -> {
        i.setContent(item.getContent());
        return i;
    }).orElse(item);/*  ww  w . j av a  2s. co m*/
    log.debug("using : {}", ticket);
    return ticket;
}

From source file:com.arpnetworking.configuration.jackson.BaseJsonNodeSource.java

/**
 * Find the <code>JsonNode</code> if one exists from a specified root node
 * given a sequence of keys to look-up./*from  w w w  . j  ava  2s .  c  o  m*/
 *
 * @param node The root <code>JsonNode</code>.
 * @param keys The sequence of keys to search for.
 * @return The <code>Optional</code> <code>JsonNode</code> instance.
 */
protected static Optional<JsonNode> getValue(final Optional<JsonNode> node, final String... keys) {
    JsonNode jsonNode = node.orElse(null);
    for (final String key : keys) {
        if (jsonNode == null) {
            break;
        }
        jsonNode = jsonNode.get(key);
    }
    return Optional.ofNullable(jsonNode);
}

From source file:nl.knaw.huygens.alexandria.endpoint.annotation.AnnotationPrototype.java

public Optional<String> getType() {
    return Optional.ofNullable(type);
}