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.thinkbiganalytics.metadata.modeshape.common.JcrPropertiesEntity.java

public Optional<JcrProperties> ensurePropertiesObject() {
    try {// w w w.  j  av a 2s . c om
        return Optional.of(JcrUtil.getOrCreateNode(this.node, PROPERTIES_NAME, JcrProperties.NODE_TYPE,
                JcrProperties.class));
    } catch (AccessControlException e) {
        return Optional.empty();
    }
}

From source file:org.trustedanalytics.hadoop.admin.tools.HadoopClientParamsImporter.java

static Optional<InputStream> getSourceInputStream(CLIParameters params) throws IOException {
    Optional<InputStream> res = Optional.of(System.in);
    if (params.getClientConfigUrl() != null) {
        res = Optional.of(new URL(params.getClientConfigUrl()).openStream());
    }/*w  w  w  .j a  va2  s. co m*/
    return res;
}

From source file:org.onosproject.segmentrouting.config.SegmentRoutingDeviceConfig.java

/**
 * Gets the name of the router.//from   ww w . j a  va  2s  .c  o  m
 *
 * @return Optional name of the router. May be empty if not configured.
 */
public Optional<String> name() {
    String name = get(NAME, null);
    return name != null ? Optional.of(name) : Optional.empty();
}

From source file:com.ikanow.aleph2.storm.samples.topology.JavaScriptTopology.java

@Override
public Tuple2<Object, Map<String, String>> getTopologyAndConfiguration(DataBucketBean bucket,
        IEnrichmentModuleContext context) {
    TopologyBuilder builder = new TopologyBuilder();
    String contextSignature = context.getEnrichmentContextSignature(Optional.of(bucket), Optional.empty());

    final Collection<Tuple2<BaseRichSpout, String>> entry_points = context
            .getTopologyEntryPoints(BaseRichSpout.class, Optional.of(bucket));
    entry_points.forEach(spout_name -> builder.setSpout(spout_name._2(), spout_name._1()));
    entry_points.stream().reduce(//from w w  w.  j a va  2 s .  c om
            builder.setBolt("scriptBolt",
                    new JavaScriptBolt(contextSignature,
                            "/com/ikanow/aleph2/storm/samples/script/js/scripts.properties")),
            (acc, v) -> acc.shuffleGrouping(v._2()), (acc1, acc2) -> acc1 // (not possible in practice)
    );
    builder.setBolt("reducerCounter", new ReducerCounterBolt()).shuffleGrouping("scriptBolt");
    builder.setBolt("out", context.getTopologyStorageEndpoint(BaseRichBolt.class, Optional.of(bucket)))
            .localOrShuffleGrouping("reducerCounter");
    return new Tuple2<Object, Map<String, String>>(builder.createTopology(), new HashMap<String, String>());
}

From source file:org.ulyssis.ipp.snapshot.Event.java

@JsonIgnore
public final Optional<Long> getId() {
    if (id != -1)
        return Optional.of(id);
    else//from w  ww  .  j  a v  a 2s. c om
        return Optional.empty();
}

From source file:com.formkiq.core.form.FormFinder.java

/**
 * Get {@link FormJSONField} from {@link FormJSONSection}.
 * @param section {@link FormJSONSection}
 * @param index int/*from   w ww .  j  av  a  2s. c o  m*/
 * @return {@link Optional} of {@link FormJSONSection}
 */
public static Optional<FormJSONField> findField(final FormJSONSection section, final int index) {
    try {
        return section != null ? Optional.of(section.getFields().get(index)) : Optional.empty();
    } catch (IndexOutOfBoundsException e) {
        return Optional.empty();
    }
}

From source file:org.trustedanalytics.cloud.cc.api.manageusers.CcOrgUser.java

@JsonIgnore
public List<Role> getRoles() {
    Optional<CcOrgUser> user = Optional.of(this);
    return Stream.of(user).filter(Optional::isPresent).map(Optional::get).map(CcOrgUser::getEntity)
            .filter(e -> e.getRoles() != null).flatMap(e -> e.getRoles().stream()).map(Role::getRoleByName)
            .collect(toList());//from   w  w  w.j av  a2  s .  c o  m
}

From source file:com.devicehive.dao.rdbms.NetworkDaoRdbmsImpl.java

@Override
public List<NetworkWithUsersAndDevicesVO> getNetworksByIdsAndUsers(Long idForFiltering, Set<Long> networkId,
        Set<Long> permittedNetworks) {
    TypedQuery<Network> query = createNamedQuery(Network.class, "Network.getNetworksByIdsAndUsers",
            Optional.of(CacheConfig.bypass())).setParameter("userId", idForFiltering)
                    .setParameter("networkIds", networkId).setParameter("permittedNetworks", permittedNetworks);
    List<Network> result = query.getResultList();
    Stream<NetworkWithUsersAndDevicesVO> objectStream = result.stream()
            .map(Network::convertWithDevicesAndUsers);
    return objectStream.collect(Collectors.toList());
}

From source file:org.cloudfoundry.metron.MetronMetricWriter.java

@Override
public void onOpen(Session session, EndpointConfig config) {
    this.session.set(Optional.of(session));
}

From source file:com.blackducksoftware.integration.hub.detect.detector.npm.NpmLockfileExtractor.java

public Extraction extract(final File directory, final File lockfile, final Optional<File> packageJson) {
    try {/* www  .  j a v  a2  s.  co  m*/
        final boolean includeDev = detectConfiguration
                .getBooleanProperty(DetectProperty.DETECT_NPM_INCLUDE_DEV_DEPENDENCIES, PropertyAuthority.None);

        String lockText = FileUtils.readFileToString(lockfile, StandardCharsets.UTF_8);
        Optional<String> packageText = Optional.empty();
        if (packageJson.isPresent()) {
            packageText = Optional.of(FileUtils.readFileToString(packageJson.get(), StandardCharsets.UTF_8));
        }

        final NpmParseResult result = npmLockfileParser.parse(directory.getCanonicalPath(), packageText,
                lockText, includeDev);

        return new Extraction.Builder().success(result.codeLocation).projectName(result.projectName)
                .projectVersion(result.projectVersion).build();

    } catch (final IOException e) {
        return new Extraction.Builder().exception(e).build();
    }
}