Example usage for java.util Optional isPresent

Introduction

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

Prototype

public boolean isPresent()

Source Link

Document

If a value is present, returns true , otherwise false .

Usage

From source file:com.toptal.conf.SecurityUtils.java

/**
 * Finds user in the database with actual username.
 * @return User instance.//from w w w.ja  v  a 2  s .c o  m
 */
public static User actualUser() {
    final UserDao dao = context.getBean(UserDao.class);
    User result = null;
    final Optional<User> vaadin = actualUserVaadin(dao);
    if (vaadin.isPresent()) {
        result = vaadin.get();
    }
    if (result == null) {
        result = dao.findByName(actualUserName());
    }
    return result;
}

From source file:com.synopsys.integration.blackduck.service.model.RequestFactory.java

public static Request.Builder addBlackDuckQuery(Request.Builder requestBuilder,
        Optional<BlackDuckQuery> blackDuckQuery) {
    if (blackDuckQuery.isPresent()) {
        requestBuilder.addQueryParameter(RequestFactory.Q_PARAMETER, blackDuckQuery.get().getParameter());
    }//from  ww  w.j ava  2 s  .co m
    return requestBuilder;
}

From source file:com.toptal.conf.SecurityUtils.java

/**
 * Currently authenticated user name.//from   w ww.  j a va 2 s.  c  om
 * @return User name.
 */
private static String actualUserName() {
    String result = null;
    final Optional<Authentication> auth = getAuthentication();
    if (auth.isPresent()) {
        result = auth.get().getName();
    }
    return result;
}

From source file:com.github.horrorho.inflatabledonkey.cloud.clients.KeyBagClient.java

static Optional<KeyBag> keyBag(CloudKit.RecordRetrieveResponse response, ProtectionZone zone) {
    Optional<byte[]> keyBagData = field(response.getRecord(), "keybagData", zone::decrypt);
    if (!keyBagData.isPresent()) {
        logger.warn("-- keyBag() - failed to acquire key bag");
        return Optional.empty();
    }/*from w w w . j a  v  a  2s .com*/

    Optional<byte[]> secret = field(response.getRecord(), "secret", zone::decrypt);
    if (!secret.isPresent()) {
        logger.warn("-- keyBag() - failed to acquire key bag pass code");
        return Optional.empty();
    }

    KeyBag keyBag = KeyBagFactory.create(keyBagData.get(), secret.get());
    return Optional.of(keyBag);
}

From source file:com.github.horrorho.inflatabledonkey.pcs.xfile.FileAssembler.java

static InputStream inputStream(List<Chunk> chunkData, Optional<byte[]> key) throws UncheckedIOException {
    return key.isPresent() ? inputStream(chunkData, key.get()) : inputStream(chunkData);
}

From source file:com.github.horrorho.inflatabledonkey.cloud.clients.KeyBagClient.java

public static Optional<KeyBag> keyBag(HttpClient httpClient, CloudKitty kitty, ProtectionZone zone,
        String keyBagUUID) throws IOException {
    logger.debug("-- keyBag() - keybag UUID: {}", keyBagUUID);

    List<CloudKit.RecordRetrieveResponse> responses = kitty.recordRetrieveRequest(httpClient, "mbksync",
            "K:" + keyBagUUID);

    if (responses.size() != 1) {
        logger.warn("-- keyBag() - bad response list size: {}", responses);
        return Optional.empty();
    }/*from  w w  w  . j  a  va  2s  .  c  o m*/

    CloudKit.ProtectionInfo protectionInfo = responses.get(0).getRecord().getProtectionInfo();

    Optional<ProtectionZone> optionalNewZone = zone.newProtectionZone(protectionInfo);
    if (!optionalNewZone.isPresent()) {
        logger.warn("-- keyBag() - failed to retrieve protection info");
        return Optional.empty();
    }
    ProtectionZone newZone = optionalNewZone.get();

    return keyBag(responses.get(0), newZone);
}

From source file:com.github.mavogel.ilias.Starter.java

/**
 * Adding a shutdown hook to perform a logout if the user quits the program incorrectly or
 * it is shut down by another process of the system.
 *
 * @param stateMachine the statemachine//from   w  w w .j  a va 2s . co  m
 */
private static void addShutdownHook(final ToolStateMachine stateMachine) {
    Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
        public void run() {
            if (stateMachine != null) {
                Optional<UserDataIds> userDataIds = stateMachine.getUserDataIds();
                IliasEndpoint endPoint = stateMachine.getEndpoint();
                if (userDataIds.isPresent() && endPoint != null && !stateMachine.isInEndState()) {
                    endPoint.logout(" before shutting down!");
                }
            } else {
                LOG.info("No connection had to be closed on shutdown hook!");
            }
        }
    });
}

From source file:com.formkiq.core.form.bean.FormFieldMapper.java

/**
 * Map {@link Object} to {@link FormJSON} by value key.
 * @param source {@link Object}/* w  w w. j a v  a 2s.c om*/
 * @param dest {@link FormJSON}
 * @throws ReflectiveOperationException ReflectiveOperationException
 */
public static void mapByValue(final Object source, final FormJSON dest) throws ReflectiveOperationException {

    BeanUtilsBean bean = ObjectBuilder.getBeanUtils();
    Map<String, String> values = bean.describe(source);

    Collection<FormJSONField> destList = transformToIdMap(dest).values();
    for (FormJSONField d : destList) {
        String val = values.get(d.getValuekey());
        if (val != null) {
            switch (d.getType()) {
            case SELECTBOX:
                Optional<String> op = FormFinder.findOption(d, val);
                if (op.isPresent()) {
                    d.setValue(op.get());
                    break;
                }
                //$FALL-THROUGH$
            default:
                d.setValue(val);
            }
        }
    }
}

From source file:org.rapidpm.microservice.optionals.service.ServiceWrapper.java

private static void shutdownMicroservice() {

    String restBaseUrl = buildBaseUrl();

    Optional<Annotation> pathAnnotation = getAnnotation();

    if (pathAnnotation.isPresent()) {
        sendShutdownToService(restBaseUrl, pathAnnotation);
    } else {// w ww.j  ava2s  . c  om
        LOGGER.warning(
                "Could not locate Path of rest service. Could it be you forgot to add the admin optional?");
        exitHandler.exit(1);
    }

    try {
        Files.delete(MICROSERVICE_REST_FILE);
    } catch (IOException e) {
        LOGGER.warning("Could not delete file " + MICROSERVICE_REST_FILE + "Cleanup file before restart");
        exitHandler.exit(1);
    }

}

From source file:com.github.erchu.beancp.MapperExecutorSelector.java

/**
 * Returns first value in {@code collection} which is not equal to null and matches filter. If
 * there is not such element then will return null.
 *
 * @param <T> result type./*from  w  w  w  .  j a v a  2  s .c o  m*/
 * @param collection collection to search in.
 * @param filter filter predicate.
 * @return first value in {@code collection} which is not equal to null and matches filter, if
 * there is not such element then will return null.
 */
private static <T> T firstOrNull(final Collection<T> collection, final Predicate<T> filter) {
    Optional<T> findFirst = collection.stream().filter(filter).findFirst();

    return (findFirst.isPresent() ? findFirst.get() : null);
}