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:spring.travel.site.services.UserServiceTest.java

@Test
public void shouldReturnUserWithNoAddress() throws Exception {
    stubGet("/user?id=123", new User("123", "Fred", "Flintstone", "freddyf", Optional.<Address>empty()));

    HandOff<Optional<User>> handOff = new HandOff<>();

    userService.user(Optional.of("123")).whenComplete((user, t) -> handOff.put(user));

    Optional<User> optionalUser = handOff.get(1);
    assertNotEquals(Optional.empty(), optionalUser);

    User user = optionalUser.get();//  w  w w . ja  va  2  s.c  o  m
    assertEquals("Fred", user.getFirstName());
    assertEquals(Optional.empty(), user.getAddress());
}

From source file:com.arpnetworking.metrics.common.tailer.FilePositionStore.java

/**
 * {@inheritDoc}/*  www.  java 2s  . com*/
 */
@Override
public Optional<Long> getPosition(final String identifier) {
    final Descriptor descriptor = _state.get(identifier);
    if (descriptor == null) {
        return Optional.empty();
    }
    return Optional.of(descriptor.getPosition());
}

From source file:tds.assessment.services.impl.AssessmentServiceImplIntegrationTests.java

@Test
public void shouldReturnCachedAssessment() {
    final String clientName = "SBAC_PT";
    Assessment assessment = new Assessment();
    assessment.setKey("theKey");
    Segment fixedFormSegment = new Segment(assessment.getKey(), Algorithm.FIXED_FORM);
    assessment.setSegments(Collections.singletonList(fixedFormSegment));

    when(assessmentQueryRepository.findAssessmentByKey(clientName, assessment.getKey()))
            .thenReturn(Optional.of(assessment));
    Optional<Assessment> maybeAssessment1 = service.findAssessment(clientName, assessment.getKey());
    // Get the cached value - only a single repo call should result from the two service calls
    Optional<Assessment> maybeAssessment2 = service.findAssessment(clientName, assessment.getKey());
    verify(assessmentQueryRepository, times(1)).findAssessmentByKey(clientName, assessment.getKey());

    assertThat(maybeAssessment1).isEqualTo(maybeAssessment2);
}

From source file:se.omegapoint.facepalm.client.adapters.UserAdapter.java

public Optional<Profile> profileFor(final String username) {
    final Result<User, UserFailure> result = userService.getUserWith(username);
    return result.isSuccess() ? Optional.of(new Profile(result.success())) : Optional.empty();
}

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

@Test
public void test_foldTuple() {
    final ObjectMapper mapper = BeanTemplateUtils.configureMapper(Optional.empty());

    LinkedHashMap<String, Object> test1 = new LinkedHashMap<String, Object>();
    test1.put("long", 10L);
    test1.put("double", 1.1);
    test1.put("string", "val");
    test1.put("json", "{\"misc\":true,\"long\":1, \"string\":\"\"}");

    final JsonNode j1 = JsonUtils.foldTuple(test1, mapper, Optional.empty());
    assertEquals("{\"misc\":true,\"long\":10,\"string\":\"val\",\"double\":1.1}", j1.toString());

    LinkedHashMap<String, Object> test2 = new LinkedHashMap<String, Object>();
    test2.put("misc", false);
    test2.put("long", 10L);
    test2.put("json", "{\"misc\":true,\"long\":1, \"string\":\"\"}");
    test2.put("double", 1.1);
    test2.put("string", "val");

    final JsonNode j2 = JsonUtils.foldTuple(test2, mapper, Optional.of("json"));
    assertEquals("{\"misc\":false,\"long\":10,\"string\":\"val\",\"double\":1.1}", j2.toString());

    LinkedHashMap<String, Object> test3 = new LinkedHashMap<String, Object>();
    test3.put("long", mapper.createObjectNode());
    test3.put("double", mapper.createArrayNode());
    test3.put("string", BeanTemplateUtils.build(TestBean.class).with("test1", 4).done().get());
    test3.put("json", "{\"misc\":true,\"long\":1, \"string\":\"\"}");

    final JsonNode j3 = JsonUtils.foldTuple(test3, mapper, Optional.of("json"));
    assertEquals("{\"misc\":true,\"long\":{},\"string\":{\"test1\":4},\"double\":[]}", j3.toString());

    LinkedHashMap<String, Object> test4 = new LinkedHashMap<String, Object>();
    test4.put("misc", BigDecimal.ONE);
    test4.put("long", (int) 10);
    test4.put("double", (float) 1.1);
    test4.put("json", "{\"misc\":true,\"long\":1, \"string\":\"\"}");
    test4.put("string", "val");

    final JsonNode j4 = JsonUtils.foldTuple(test4, mapper, Optional.of("json"));
    assertEquals("{\"misc\":1,\"long\":10,\"string\":\"val\",\"double\":1.1}",
            j4.toString().replaceFirst("1[.]1[0]{6,}[0-9]+", "1.1"));

    try {/*from   w  w  w  . j a  v  a 2s .c  om*/
        test4.put("json", "{\"misc\":true,\"long\":1, string\":\"\"}"); // (Added json error)
        JsonUtils.foldTuple(test4, mapper, Optional.of("json"));
        fail("Should have thrown JSON exception");
    } catch (Exception e) {
    } // json error, check

    new JsonUtils(); // (just for coverage)      
}

From source file:org.openwms.tms.RedirectTODocumentation.java

public @Test void testRedirectToUnknownLocationButLocGroup() throws Exception {
    // setup ...//w w w .ja v a 2 s. co m
    CreateTransportOrderVO vo = createTO();
    postTOAndValidate(vo, NOTLOGGED);
    vo.setTarget(UNKNOWN);
    given(commonGateway.getLocationGroup(UNKNOWN)).willReturn(Optional.of(ERR_LOCGRB));
    given(commonGateway.getLocation(UNKNOWN)).willReturn(Optional.empty());

    // test ...
    sendPatch(vo, status().isNoContent(), "to-patch-target-unknown-locgb");
}

From source file:io.pravega.controller.store.stream.tables.IndexRecord.java

private static Pair<Integer, Optional<IndexRecord>> binarySearchIndex(final int lower, final int upper,
        final long timestamp, final byte[] indexTable) {
    if (upper < lower || indexTable.length == 0) {
        return new ImmutablePair<>(0, Optional.empty());
    }//from   w w  w. j a v a2 s  .c  o m

    final int offset = ((lower + upper) / 2) * IndexRecord.INDEX_RECORD_SIZE;

    final IndexRecord record = IndexRecord.readRecord(indexTable, offset).get();

    final Optional<IndexRecord> next = IndexRecord.fetchNext(indexTable, offset);

    if (record.getEventTime() <= timestamp) {
        if (!next.isPresent() || (next.get().getEventTime() > timestamp)) {
            return new ImmutablePair<>(offset, Optional.of(record));
        } else {
            return binarySearchIndex((lower + upper) / 2 + 1, upper, timestamp, indexTable);
        }
    } else {
        return binarySearchIndex(lower, (lower + upper) / 2 - 1, timestamp, indexTable);
    }
}

From source file:org.openmhealth.shim.ihealth.mapper.IHealthBodyMassIndexDataPointMapper.java

@Override
protected Optional<DataPoint<BodyMassIndex>> asDataPoint(JsonNode listEntryNode,
        Integer measureUnitMagicNumber) {

    Double bmiValue = asRequiredDouble(listEntryNode, "BMI");

    if (bmiValue == 0) {
        return Optional.empty();
    }/*  w  w w  .  j  ava  2s  .  co  m*/

    BodyMassIndex.Builder bodyMassIndexBuilder = new BodyMassIndex.Builder(
            new TypedUnitValue<>(KILOGRAMS_PER_SQUARE_METER, bmiValue));

    getEffectiveTimeFrameAsDateTime(listEntryNode).ifPresent(bodyMassIndexBuilder::setEffectiveTimeFrame);

    getUserNoteIfExists(listEntryNode).ifPresent(bodyMassIndexBuilder::setUserNotes);

    BodyMassIndex bodyMassIndex = bodyMassIndexBuilder.build();
    return Optional.of(new DataPoint<>(createDataPointHeader(listEntryNode, bodyMassIndex), bodyMassIndex));

}

From source file:org.openmhealth.shim.withings.mapper.WithingsBloodPressureDataPointMapper.java

@Override
public Optional<Measure.Builder<BloodPressure, ?>> newMeasureBuilder(JsonNode measuresNode) {

    Optional<BigDecimal> systolicValue = getValueForMeasureType(measuresNode, SYSTOLIC_BLOOD_PRESSURE);
    Optional<BigDecimal> diastolicValue = getValueForMeasureType(measuresNode, DIASTOLIC_BLOOD_PRESSURE);

    if (!systolicValue.isPresent() && !diastolicValue.isPresent()) {
        return empty();
    }// www.jav a2 s  .c  o m

    if (!systolicValue.isPresent() || !diastolicValue.isPresent()) {
        logger.warn("The Withings measure node {} doesn't contain both systolic and diastolic measures.",
                measuresNode);
        return empty();
    }

    return Optional.of(new BloodPressure.Builder(new SystolicBloodPressure(MM_OF_MERCURY, systolicValue.get()),
            new DiastolicBloodPressure(MM_OF_MERCURY, diastolicValue.get())));
}

From source file:com.formkiq.core.service.propertystore.PropertyStoreDatabase.java

@Override
public Optional<KeyPair> retrieveKeyPair() throws GeneralSecurityException {

    Optional<KeyPair> result = Optional.empty();
    String pubkey = this.propertyService.getProperty(null, PUBLIC_KEY);
    String privkey = this.propertyService.getProperty(null, PRIVATE_KEY);

    if (!isEmpty(pubkey) && !isEmpty(privkey)) {
        KeyGenerator keygen = new KeyGenerator();
        RSAPublicKey publickey = keygen.stringToPublicKey(pubkey);
        RSAPrivateKey privatekey = keygen.stringToPrivateKey(privkey);
        result = Optional.of(new KeyPair(publickey, privatekey));
    }//from w w  w .j a v a2s  .  com

    return result;
}