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:lumbermill.internal.geospatial.GeoIPTest.java

@Ignore
@Test//from w ww  . java2  s.  co  m
public void test_geoip_all_fields() {
    GeoIP geoIP = GeoIP.Factory.create("client_ip", Optional.of("geoip"),
            Optional.of(new File("/tmp/GeoLite2-City.mmdb")), Optional.empty());
    JsonEvent event = Codecs.TEXT_TO_JSON.from("Hello").put("client_ip", "37.139.156.40");
    geoIP.decorate(event);

    JsonNode geoip = event.unsafe().get("geoip");
    assertThat(geoip.get("country_code2").asText()).isEqualTo("SE");
    assertThat(geoip.get("country_code3").asText()).isEqualTo("SE");
    assertThat(geoip.get("timezone").asText()).isEqualTo("Europe/Stockholm");
    assertThat(geoip.get("continent_code").asText()).isEqualTo("EU");
    assertThat(geoip.get("continent_name").asText()).isEqualTo("Europe");
    assertThat(geoip.get("country_name").asText()).isEqualTo("Sweden");
    assertThat(geoip.get("city_name").asText()).isEqualTo("Sodra Sandby");
    assertThat(geoip.get("longitude").asDouble()).isEqualTo(13.3333);
    assertThat(geoip.get("latitude").asDouble()).isEqualTo(55.7167);
    ArrayNode location = (ArrayNode) geoip.get("location");
    assertThat(location.get(0).asDouble()).isEqualTo(13.3333);
    assertThat(location.get(1).asDouble()).isEqualTo(55.7167);
    System.out.println(event);
}

From source file:io.dfox.junit.http.example.NoteRepository.java

public synchronized Optional<InputStream> getNote(final String name) throws IOException {
    File note = new File(dir, name);
    if (note.exists()) {
        return Optional.of(IOUtils.toBufferedInputStream(FileUtils.openInputStream(note)));
    } else {/*w  w  w  .j a  va 2  s.  c o m*/
        return Optional.empty();
    }
}

From source file:com.ikanow.aleph2.data_model.utils.PropertiesUtils.java

/** Returns the sub-object of a config, or empty if
 * @param config the configuration object
 * @param key the root key of the sub object
 * @return/*ww w . jav a  2 s  . c o  m*/
 */
public static Optional<ConfigObject> getSubConfigObject(final Config config, final String key) {
    try {
        return Optional.of(config.getObject(key));
    } catch (Exception e) {
        return Optional.empty();
    }
}

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

public Optional<TeamState> getStateForTeam(int teamNb) {
    if (teamNbToState.containsKey(teamNb)) {
        return Optional.of(teamNbToState.get(teamNb));
    } else {/*from   w  w  w .j  av a  2 s .c o m*/
        return Optional.empty();
    }
}

From source file:it.polimi.diceH2020.launcher.service.Validator.java

public <T> Optional<T> objectFromPath(Path pathFile, Class<T> cls) {

    String serialized;//  w w w.  jav a  2s.c o  m
    try {
        serialized = new String(Files.readAllBytes(pathFile));
        T data = mapper.readValue(serialized, cls);
        return Optional.of(data);
    } catch (IOException e) {
        return Optional.empty();
    }
}

From source file:net.sourceforge.fullsync.cli.CliRuntimeConfiguration.java

public CliRuntimeConfiguration(CommandLine args) {
    profileToRun = parseProfileToRun(args);
    daemon = Optional.of(args.hasOption('d'));
    startMinimized = Optional.of(args.hasOption('m'));
}

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

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

    long stepCountValue = asRequiredLong(listEntryNode, "details.steps");

    if (stepCountValue <= 0) {
        return Optional.empty();
    }/*w w  w  . j a va  2s .c  om*/

    StepCount.Builder stepCountBuilder = new StepCount.Builder(stepCountValue);

    setEffectiveTimeFrame(stepCountBuilder, listEntryNode);

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

From source file:com.twosigma.beakerx.kernel.EvaluatorParameters.java

public <T> Optional<T> getParam(String key, Class<T> clazz) {
    if (params.containsKey(key)) {
        return Optional.of(clazz.cast(params.get(key)));
    }//from w  w w  .j av a2 s . c  o m
    return Optional.empty();
}

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

public static BufferingClientHttpResponse buffer(final ClientHttpResponse response) throws IOException {
    if (response.getBody() == null) {
        return new BufferingClientHttpResponse(response, empty());
    } else {//from   w  w w  .  j  a v  a 2 s.c o  m
        final byte[] bytes = ByteStreams.toByteArray(response.getBody());
        return new BufferingClientHttpResponse(response, Optional.of(bytes));
    }
}

From source file:io.kloudwork.util.MultipartParamHolder.java

public MultipartParamHolder(Map<String, String> parameters, Map<String, FileItemStream> files) {
    this.parameters = parameters;
    this.files = Optional.of(files);
}