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:de.tu_dortmund.ub.data.util.TPUUtil.java

public static Optional<Boolean> getBooleanConfigValue(final String configKey, final Properties config) {

    final String configValue = config.getProperty(configKey);

    final Optional<Boolean> optionalConfigValue;

    if (configValue != null && !configValue.trim().isEmpty()) {

        optionalConfigValue = Optional.of(Boolean.valueOf(configValue));
    } else {// w  w  w.j  a v  a  2 s  .c o m

        optionalConfigValue = Optional.empty();
    }

    return optionalConfigValue;
}

From source file:org.openmhealth.shim.googlefit.mapper.GoogleFitBodyWeightDataPointMapper.java

@Override
public Optional<DataPoint<BodyWeight>> asDataPoint(JsonNode listNode) {

    JsonNode valueList = asRequiredNode(listNode, getValueListNodeName());

    Double bodyWeightValue = asRequiredDouble(valueList.get(0), "fpVal");
    if (bodyWeightValue == 0) {
        return Optional.empty();
    }//  w w w.  j a v  a2 s  . c  om

    BodyWeight.Builder bodyWeightBuilder = new BodyWeight.Builder(new MassUnitValue(KILOGRAM, bodyWeightValue));
    setEffectiveTimeFrameIfPresent(bodyWeightBuilder, listNode);

    Optional<String> originDataSourceId = asOptionalString(listNode, "originDataSourceId");

    BodyWeight bodyWeight = bodyWeightBuilder.build();
    return Optional.of(newDataPoint(bodyWeight, originDataSourceId.orElse(null)));
}

From source file:io.dfox.junit.http.api.Path.java

/**
 * Parse a String into a RunPath. The path is expected to be in the format 
 * &lt;grouping&gt;[/&lt;name&gt;].
 * /*  w w w  .ja va 2s  .com*/
 * @param path The string path
 * @return The test path or an empty Optional if the path is not valid or could not be parsed
 */
public static Optional<Path> parse(final String path) {
    final ImmutableList<String> parts = Arrays.stream(path.split("/")).map(s -> s.trim())
            .filter(s -> !s.isEmpty()).collect(Collectors.toImmutableList());

    switch (parts.size()) {
    case 1:
        return Optional.of(new Path(parts.get(0), Optional.empty()));
    case 2:
        return Optional.of(new Path(parts.get(0), Optional.of(parts.get(1))));
    default:
        return Optional.empty();
    }
}

From source file:org.openmhealth.shim.fitbit.mapper.FitbitBodyWeightDataPointMapper.java

@Override
protected Optional<DataPoint<BodyWeight>> asDataPoint(JsonNode node) {

    MassUnitValue bodyWeight = new MassUnitValue(KILOGRAM, asRequiredDouble(node, "weight"));
    BodyWeight.Builder builder = new BodyWeight.Builder(bodyWeight);

    Optional<OffsetDateTime> dateTime = combineDateTimeAndTimezone(node);

    if (dateTime.isPresent()) {
        builder.setEffectiveTimeFrame(dateTime.get());
    }//from  w ww  .ja  v a 2 s.c  om

    Optional<Long> externalId = asOptionalLong(node, "logId");

    return Optional.of(newDataPoint(builder.build(), externalId.orElse(null)));
}

From source file:org.openmhealth.shim.googlefit.mapper.GoogleFitBodyHeightDataPointMapper.java

@Override
public Optional<DataPoint<BodyHeight>> asDataPoint(JsonNode listNode) {

    JsonNode valueListNode = asRequiredNode(listNode, getValueListNodeName());
    double bodyHeightValue = asRequiredDouble(valueListNode.get(0), "fpVal");

    if (bodyHeightValue == 0) {
        return Optional.empty();
    }/*  w ww  .  j a v  a  2s .c o  m*/

    BodyHeight.Builder bodyHeightBuilder = new BodyHeight.Builder(new LengthUnitValue(METER, bodyHeightValue));

    setEffectiveTimeFrameIfPresent(bodyHeightBuilder, listNode);

    BodyHeight bodyHeight = bodyHeightBuilder.build();
    Optional<String> originDataSourceId = asOptionalString(listNode, "originDataSourceId");

    return Optional.of(newDataPoint(bodyHeight, originDataSourceId.orElse(null)));
}

From source file:io.github.retz.scheduler.MesosHTTPFetcher.java

public static Optional<String> sandboxUri(String t, String master, String slaveId, String frameworkId,
        String executorId) {//from   w ww  . java2 s . com

    Optional<String> slaveAddr = fetchSlaveAddr(master, slaveId); // get master:5050/slaves with slaves/pid, cut with '@'
    LOG.debug("Agent address of executor {}: {}", executorId, slaveAddr);

    if (!slaveAddr.isPresent()) {
        return Optional.empty();
    }

    Optional<String> dir = fetchDirectory(slaveAddr.get(), frameworkId, executorId);
    if (!dir.isPresent()) {
        return Optional.empty();
    }

    try {
        return Optional.of(String.format("http://%s/files/%s?path=%s", slaveAddr.get(), t,
                java.net.URLEncoder.encode(dir.get(), //builder.toString(),
                        java.nio.charset.StandardCharsets.UTF_8.toString())));
    } catch (UnsupportedEncodingException e) {
        return Optional.empty();
    }
}

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

@Override
protected Optional<String> getPackageCmd(FinalProjectConfig config, String currentPath) {
    String cmd = config.getApp().getPackageCmd();
    if (cmd == null || cmd.trim().isEmpty()) {
        // //ww w  .  ja v a2s. com
        cmd = "npm run build:" + config.getProfile();
    }
    cmd = "cd " + currentPath + " && " + cmd;
    return Optional.of(cmd);
}

From source file:fi.helsinki.opintoni.service.CourseServiceTest.java

@Test
public void thatTeacherCourseDtosAreFetched() {
    expectTeacherCourses();/*from w  w  w . j a va  2 s. co m*/

    Set<CourseDto> courseDtos = courseService.getCourses(Optional.empty(),
            Optional.of(TestConstants.TEACHER_NUMBER), Locale.ENGLISH);

    assertThat(courseDtos).hasSize(2);
    assertThat(courseDtos, hasCourseWithRealisationId(TestConstants.TEACHER_COURSE_REALISATION_ID));
    assertThat(courseDtos, hasCourseWithRealisationId(TestConstants.EXAM_TEACHER_COURSE_REALISATION_ID));
}

From source file:io.github.retz.web.feign.ErrorResponseDecoder.java

private static Optional<String> extract(String message) {
    int idx = message.indexOf(SEPARATOR);
    if (idx >= 0) {
        return Optional.of(message.substring(idx + SEPARATOR.length()));
    } else {/*from w w w.  ja  v a  2  s  . co  m*/
        return Optional.empty();
    }
}

From source file:blusunrize.immersiveengineering.client.models.ModelItemDynamicOverride.java

public ModelItemDynamicOverride(IBakedModel itemModel, @Nullable List<ResourceLocation> textures) {
    this.itemModel = itemModel;
    if (textures != null) {
        ImmutableList.Builder<BakedQuad> builder = ImmutableList.builder();
        Optional<TRSRTransformation> transform = Optional.of(TRSRTransformation.identity());
        for (int i = 0; i < textures.size(); i++)
            builder.addAll(ItemLayerModel.getQuadsForSprite(i, ClientUtils.getSprite(textures.get(i)),
                    DefaultVertexFormats.ITEM, transform));
        quads = builder.build();//from   w  w w . j a  v a  2 s . co m
        guiModel = new BakedGuiItemModel(this);
    } else {
        guiModel = itemModel;
    }
}