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.github.rutledgepaulv.qbuilders.structures.FieldPath.java

public Optional<FieldPath> getParentPath() {
    if (chain.size() > 1) {
        return Optional.of(new FieldPath(chain.subList(0, chain.size() - 1)));
    } else {//  w  w w.  jav a2  s .c  o  m
        return Optional.empty();
    }
}

From source file:de.metas.ui.web.window.datatypes.json.filters.JSONDocumentFilterParam.java

/**
 * Creates {@link JSONDocumentFilterParam} from {@link DocumentFilterParam} if the given filter is not internal.
 * /*  ww  w.j  a  v  a  2 s.  c  om*/
 * @param filterParam
 * @return JSON document filter parameter
 */
/* package */static final Optional<JSONDocumentFilterParam> of(final DocumentFilterParam filterParam) {
    // Don't convert internal filters
    if (filterParam.isSqlFilter()) {
        // throw new IllegalArgumentException("Sql filters are not allowed to be converted to JSON filters: " + filterParam);
        return Optional.empty();
    }

    final String fieldName = filterParam.getFieldName();
    final Object jsonValue = Values.valueToJsonObject(filterParam.getValue());
    final Object jsonValueTo = Values.valueToJsonObject(filterParam.getValueTo());
    final JSONDocumentFilterParam jsonFilterParam = new JSONDocumentFilterParam(fieldName, jsonValue,
            jsonValueTo);
    return Optional.of(jsonFilterParam);
}

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

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

    String region = n.get(AWSScanner.AWS_REGION_ATTRIBUTE).asText();

    return Optional.of(String.format("arn:aws:ec2:%s:%s:subnet/%s", region,
            n.get(AccountScanner.ACCOUNT_ATTRIBUTE).asText(), n.get("aws_subnetId").asText()));

}

From source file:com.tesobe.obp.transport.json.DecoderNov2016.java

@Override
public Optional<Request> request(String requestId, String request) {
    return Optional.of(new RequestDecoder(requestId, request));
}

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

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

    // arn:aws:ec2:region:account-id:security-group/security-group-id
    return Optional.of(String.format("arn:aws:ec2:%s:%s:security-group/%s", n.get("aws_region").asText(),
            n.get("aws_account").asText(), n.get("aws_groupId").asText()));

}

From source file:org.openlmis.fulfillment.util.Merger.java

private static <E> Optional<Merger<E>> of(List<E> elements) {
    if (CollectionUtils.isEmpty(elements)) {
        return Optional.of(new EmptyMerger<>());
    }//from  w w w.ja  v a2 s.co m

    if (elements.size() == 1) {
        return Optional.of(new SingleMerger<>(elements));
    }

    return Optional.empty();
}

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

@Override
public IdentityProviderVO getByName(@NotNull String name) {
    IdentityProvider identityProvider = createNamedQuery(IdentityProvider.class, "IdentityProvider.getByName",
            Optional.of(CacheConfig.refresh())).setParameter("name", name).getResultList().stream().findFirst()
                    .orElse(null);/*w  ww . j  a va  2  s .  co  m*/
    return IdentityProvider.convertToVO(identityProvider);
}

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

@Test
public void serializationAttributeWithNullMetadataTest() throws JsonProcessingException {
    Attribute attribute = new Attribute(23.5);
    attribute.setType(Optional.of("float"));
    String json = Utils.objectMapper.writeValueAsString(attribute);
    assertTrue(json.contains("value"));
    assertTrue(json.contains("type"));
    assertTrue(json.contains("metadata"));
}

From source file:io.helixservice.feature.configuration.locator.AbstractResourceLocator.java

/**
 * {@inheritDoc}//  ww  w. ja  va  2 s.  c  om
 */
@Override
public Optional<String> getString(String resourcePath) {
    Optional<String> result = Optional.empty();

    try {
        InputStream in = getStream(resourcePath).get();
        result = Optional.of(IOUtils.toString(in));
    } catch (Throwable t) {
        // Possibly expected
    }

    return result;
}

From source file:com.macrossx.wechat.http.WechatHttpClient.java

public <T> Optional<T> send(final HttpUriRequest request, Class<T> clazz) {
    String result = this.send(request);
    if (result.isEmpty()) {
        return Optional.empty();
    } else {//from   w  w  w .j  a v a 2s.c o  m
        return Optional.of(new Gson().fromJson(result, clazz));
    }
}