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.orange.ngsi2.model.AttributeTest.java

@Test
public void serializationAttributeWithMetadataTest() throws JsonProcessingException {
    Attribute attribute = new Attribute(23.5);
    attribute.setType(Optional.of("float"));
    Metadata metadata = new Metadata();
    metadata.setType("mesure");
    metadata.setValue("celsius");
    HashMap<String, Metadata> metadatas = new HashMap<String, Metadata>();
    metadatas.put("metadata1", metadata);
    attribute.setMetadata(metadatas);/*from  www. j ava2  s  .c  o m*/
    String json = Utils.objectMapper.writeValueAsString(attribute);
    String jsonString = "{\"value\":23.5,\"type\":\"float\",\"metadata\":{\"metadata1\":{\"value\":\"celsius\",\"type\":\"mesure\"}}}";
    assertEquals(jsonString, json);
}

From source file:org.trustedanalytics.metricsprovider.cloudadapter.api.CfSpace.java

@JsonIgnore
public UUID getGuid() {
    Optional<CfSpace> space = Optional.of(this);
    return space.map(CfSpace::getMetadata).map(CfMetadata::getGuid).orElse(null);
}

From source file:org.lendingclub.mercator.aws.S3BucketScanner.java

@Override
public Optional<String> computeArn(JsonNode n) {
    String name = n.get("name").asText();

    return Optional.of("arn:aws:s3:::" + name);
}

From source file:co.runrightfast.core.utils.ConfigUtils.java

static Optional<Config> getConfig(final Config config, final String path, final String... paths) {
    if (!hasPath(config, path, paths)) {
        return Optional.empty();
    }//from w ww.j a  v  a 2s  .c om
    return Optional.of(config.getConfig(configPath(path, paths)));
}

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

@Override
Optional<Measure.Builder<BodyMassIndex, ?>> newMeasureBuilder(JsonNode listEntryNode) {

    TypedUnitValue<BodyMassIndexUnit> bmiValue = new TypedUnitValue<>(KILOGRAMS_PER_SQUARE_METER,
            asRequiredDouble(listEntryNode, "bmi"));

    return Optional.of(new BodyMassIndex.Builder(bmiValue));
}

From source file:ms.dew.devops.kernel.plugin.appkind.frontend_node.FrontendNodePrepareFlow.java

@Override
protected Optional<String> getPreparePackageCmd(FinalProjectConfig config, String currentPath) {
    String cmd = config.getApp().getPreparePackageCmd();
    if (cmd == null || cmd.trim().isEmpty()) {
        // //from  ww  w.  j  av a2s .  co  m
        cmd = "npm install";
    }
    cmd = "cd " + currentPath + " && " + cmd;
    return Optional.of(cmd);
}

From source file:org.lendingclub.mercator.aws.AMIScanner.java

@Override
public Optional<String> computeArn(JsonNode n) {

    String region = n.path(AWSScanner.AWS_REGION_ATTRIBUTE).asText(null);
    String imageId = n.path(IMAGE_ID_ATTRIBUTE).asText(null);

    Preconditions.checkState(!Strings.isNullOrEmpty(region), "aws_region not set");
    Preconditions.checkState(!Strings.isNullOrEmpty(imageId), "aws_imageId not set");

    return Optional.of(String.format("arn:aws:ec2:%s::image/%s", region, imageId));
}

From source file:com.ikanow.aleph2.example.flume_harvester.utils.FlumeUtils.java

/** Returns the morphlines config
 * @param bucket_config/*from w  w w. j av a 2  s . c  om*/
 * @return
 */
public static Optional<String> createMorphlinesConfig(final FlumeBucketConfigBean bucket_config) {
    //TODO (ALEPH-10): security

    return Optional.of(Optional.ofNullable(bucket_config.morphlines_config_str()))
            .map(opt -> opt.map(ss -> ss + "\n").orElse(""))
            .map(s -> s + Optional.ofNullable(bucket_config.morphlines_config())
                    .map(o -> _mapper.convertValue(o, JsonNode.class).toString()).orElse(""))
            .filter(s -> !s.isEmpty());
}

From source file:com.orange.ngsi2.model.ErrorTest.java

@Test
public void checkSerializationComplete() throws JsonProcessingException {
    ObjectMapper objectMapper = new ObjectMapper().registerModule(new Jdk8Module());

    Error parseError = new Error("400");
    parseError.setDescription(Optional.of("The incoming JSON payload cannot be parsed"));
    parseError.setAffectedItems(Optional.of(Collections.singleton("entities")));
    String json = objectMapper.writeValueAsString(parseError);
    assertTrue(json.contains("error"));
    assertTrue(json.contains("description"));
    assertTrue(json.contains("affectedItems"));
}

From source file:ch.zweivelo.renderer.simple.shapes.Sphere.java

@Override
public Optional<Double> calculateIntersectionDistance(final Ray ray) {
    Vector3D dir = ray.getDirection();
    Vector3D tmp = ray.getOrigin().subtract(center);

    OptionalDouble min = Solver.QUADRATIC
            .solve(tmp.dotProduct(tmp) - radius * radius, 2 * dir.dotProduct(tmp), dir.dotProduct(dir)).min();

    if (min.isPresent()) {
        return Optional.of(min.getAsDouble());
    }/*ww  w  .  j a  v a  2 s.c om*/

    return Optional.empty();
}