Example usage for java.util Optional of

List of usage examples for java.util Optional of

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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.opopov.cloud.image.service.ImageStitchingServiceImpl.java

private Optional<DecodedImage> decompressImage(int imageIndex, IndexMap indexMap, ResponseEntity<byte[]> resp) {
    Optional<BufferedImage> image = decompressImage(resp);
    Optional<DecodedImage> result = image.isPresent() ? Optional.of(new DecodedImage(image.get(), imageIndex))
            : Optional.empty();// www .j a v  a 2 s.  c  o  m
    indexMap.put(imageIndex, result);
    return result;
}

From source file:org.jhk.pulsing.web.dao.prod.db.sql.MySqlUserDao.java

public Optional<User> validateUser(String email, String password) {
    _LOGGER.debug("MySqlUserDao.validateUser" + email + " : " + password);

    List<?> entries = getSession().createNamedQuery("findUser").setParameter("email", email)
            .setParameter("password", password).getResultList();

    _LOGGER.debug("Result " + entries.size() + " : " + entries);

    if (entries == null || entries.size() == 0) {
        return Optional.empty();
    }//from   w  w  w .  java 2  s .  co  m

    return Optional.of(AvroMySqlMappers.mySqlToAvro((MUser) entries.get(0)));
}

From source file:ddf.catalog.validation.impl.validator.PatternValidator.java

/**
 * {@inheritDoc}/*from ww  w  . j a v a2  s  .  c  om*/
 * <p>
 * Validates only the values of {@code attribute} that are {@link CharSequence}s.
 */
@Override
public Optional<AttributeValidationReport> validate(final Attribute attribute) {
    Preconditions.checkArgument(attribute != null, "The attribute cannot be null.");

    final String name = attribute.getName();
    for (final Serializable value : attribute.getValues()) {
        if (value instanceof CharSequence && !(pattern.matcher((CharSequence) value)).matches()) {
            final AttributeValidationReportImpl report = new AttributeValidationReportImpl();
            report.addViolation(new ValidationViolationImpl(Collections.singleton(name),
                    name + " does not follow the pattern " + pattern.pattern(), Severity.ERROR));
            return Optional.of(report);
        }
    }

    return Optional.empty();
}

From source file:co.runrightfast.vertx.orientdb.config.NetworkSSLConfig.java

public NetworkSSLConfig(@NonNull final Path serverKeyStorePath, @NonNull final String serverKeyStorePassword,
        @NonNull final Path serverTrustStorePath, @NonNull final String serverTrustStorePassword) {
    this(DEFAULT_SSL_PORT, serverKeyStorePath, serverKeyStorePassword, Optional.of(serverTrustStorePath),
            Optional.of(serverTrustStorePassword));
}

From source file:com.yodle.vantage.component.dao.QueueDao.java

public Optional<QueueCreateRequest> getCreateRequest() {

    try {//from   w ww .  j  a  va  2 s .  c o  m
        Map<String, Object> rs = jdbcTemplate.queryForMap(
                "MATCH(c:QueueCreateRequest) " + "WHERE NOT ()-[:BEFORE]->(c) " + "return c.id, c.blob");

        return Optional.of(new QueueCreateRequest(
                objectMapper.readValue((String) rs.get("c.blob"), Version.class), (String) rs.get("c.id")));
    } /*catch (UncategorizedSQLException e) {
      l.debug("Exception occurred getting create request, probably because of queue locking", e);
      }*/ catch (EmptyResultDataAccessException e) {
        return Optional.empty();
    } catch (IOException e) {
        l.error("Error deserializing queue entry", e);
        return Optional.empty();
    }
}

From source file:com.galenframework.ide.services.filebrowser.FileBrowserServiceImpl.java

private Optional<FileItem> upFrom(File folder) {
    File parentFile = folder.getParentFile();
    if (parentFile != null) {
        return Optional.of(FileItem.directory("..", parentFile.getPath()));
    } else if (!folder.getName().equals(".")) {
        return Optional.of(FileItem.directory("..", "."));
    } else {//  w w  w.  ja va 2 s . c o  m
        return Optional.empty();
    }
}

From source file:org.camunda.bpm.spring.boot.starter.configuration.impl.custom.EnterLicenseKeyConfiguration.java

protected Optional<String> readLicenseKeyFromUrl(URL licenseFileUrl) {
    if (licenseFileUrl == null) {
        return Optional.empty();
    }/* w  ww  .  ja  va  2s .  c  o  m*/
    try {
        return Optional.of(new Scanner(licenseFileUrl.openStream(), "UTF-8").useDelimiter("\\A"))
                .filter(Scanner::hasNext).map(Scanner::next).map(s -> s.split("---------------")[2])
                .map(s -> s.replaceAll("\\n", "")).map(String::trim);
    } catch (IOException e) {
        return Optional.empty();
    }
}

From source file:com.ikanow.aleph2.shared.crud.elasticsearch.data_model.TestElasticsearchContext.java

@Test
public void test_context() throws JsonProcessingException, IOException {

    final Calendar c1 = GregorianCalendar.getInstance();
    final Calendar c2 = GregorianCalendar.getInstance();
    final Calendar cnow = GregorianCalendar.getInstance();

    // Just going to test the non-trivial logic:
    {//from  ww  w  .  java 2s.c o m
        final ElasticsearchContext.IndexContext.ReadOnlyIndexContext.TimedRoIndexContext index_context_1 = new ElasticsearchContext.IndexContext.ReadOnlyIndexContext.TimedRoIndexContext(
                Arrays.asList("test1_{yyyy}", "test_2_{yyyy.MM}", "test3__MYID"));

        assertEquals(Arrays.asList("test1*", "test_2*", "test3__MYID*"),
                index_context_1.getReadableIndexList(Optional.empty()));

        c1.set(2004, 11, 28);
        c2.set(2005, 0, 2);
        assertEquals(
                Arrays.asList("test1_2004*", "test1_2005*", "test_2_2004.12*", "test_2_2005.01*",
                        "test3__MYID*"),
                index_context_1.getReadableIndexList(
                        Optional.of(Tuples._2T(c1.getTime().getTime(), c2.getTime().getTime()))));
    }

    // Check get an invalid entry if the index list is empty
    {
        final ElasticsearchContext.IndexContext.ReadOnlyIndexContext.TimedRoIndexContext index_context_1 = new ElasticsearchContext.IndexContext.ReadOnlyIndexContext.TimedRoIndexContext(
                Arrays.asList());

        assertEquals(Arrays.asList(ElasticsearchContext.NO_INDEX_FOUND),
                index_context_1.getReadableIndexList(Optional.empty()));
    }

    // Some timestamp testing
    {
        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext index_context_2 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext(
                "test1_{yyyy}", Optional.of("@timestamp"), Optional.empty(), Either.left(true));

        assertTrue("timestamp field present", index_context_2.timeField().isPresent());
        assertEquals("@timestamp", index_context_2.timeField().get());

        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext index_context_3 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext(
                "test_2_{yyyy.MM}", Optional.empty(), Optional.empty(), Either.left(true));

        assertFalse("no timestamp field", index_context_3.timeField().isPresent());

        cnow.setTime(new Date());
        int month = cnow.get(Calendar.MONTH) + 1;
        assertEquals("test_2_" + cnow.get(Calendar.YEAR) + "." + ((month < 10) ? ("0" + month) : (month)),
                index_context_3.getWritableIndex(
                        Optional.of(BeanTemplateUtils.configureMapper(Optional.empty()).createObjectNode())));

        // This isn't supported any more, valid strings only
        //         final ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext index_context_4 = 
        //               new ElasticsearchContext.IndexContext.ReadWriteIndexContext.TimedRwIndexContext("test3", Optional.of("@timestamp"));

        assertEquals(Arrays.asList("test1*"), index_context_2.getReadableIndexList(Optional.empty()));
        assertEquals(Arrays.asList("test_2*"), index_context_3.getReadableIndexList(Optional.empty()));

        assertEquals(Arrays.asList("test1_2004*", "test1_2005*"), index_context_2
                .getReadableIndexList(Optional.of(Tuples._2T(c1.getTime().getTime(), c2.getTime().getTime()))));
        assertEquals(Arrays.asList("test_2_2004.12*", "test_2_2005.01*"), index_context_3
                .getReadableIndexList(Optional.of(Tuples._2T(c1.getTime().getTime(), c2.getTime().getTime()))));
        // (see index_context_4 declaration, above)
        //         assertEquals(Arrays.asList("test3*"), index_context_4.getReadableIndexList(Optional.of(Tuples._2T(c1.getTime().getTime(), c2.getTime().getTime()))));

        // Check gets the right timestamp when writing objects into an index

        c1.set(2004, 11, 28, 12, 00, 01);
        final ObjectNode obj = ((ObjectNode) BeanTemplateUtils.configureMapper(Optional.empty())
                .readTree("{\"val\":\"test1\"}".getBytes())).put("@timestamp", c1.getTime().getTime());

        final String expected3 = new SimpleDateFormat("yyyy.MM").format(new Date());

        assertEquals("test1_2004", index_context_2.getWritableIndex(Optional.of(obj)));
        assertEquals("test_2_" + expected3, index_context_3.getWritableIndex(Optional.of(obj)));
        // (see index_context_4 declaration, above)
        //         assertEquals("test3", index_context_4.getWritableIndex(Optional.of(obj)));
    }

    // Test readable index differences depending on whether the max index size is set or not

    {
        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext index_context_1 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext(
                "test1", Optional.empty(), Either.left(true));

        assertEquals(Arrays.asList("test1"), index_context_1.getReadableIndexList(Optional.empty()));

        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext index_context_2 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext(
                "test2", Optional.of(-1L), Either.left(true));

        assertEquals(Arrays.asList("test2"), index_context_2.getReadableIndexList(Optional.empty()));

        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext index_context_3 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext(
                "test3", Optional.of(0L), Either.left(true));

        assertEquals(Arrays.asList("test3*"), index_context_3.getReadableIndexList(Optional.empty()));

        final ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext index_context_4 = new ElasticsearchContext.IndexContext.ReadWriteIndexContext.FixedRwIndexContext(
                "test4", Optional.of(10L), Either.left(true));

        assertEquals(Arrays.asList("test4*"), index_context_4.getReadableIndexList(Optional.empty()));
    }
}

From source file:com.vsct.dt.hesperides.applications.SnapshotRegistry.java

@Override
public <U> Optional<U> getSnapshot(SnapshotKey snapshotKey, Class snapshotClass) {
    try (A jedis = connectionPool.getResource()) {

        String objectAsString = jedis.get(snapshotKey.getIdentifier());
        return Optional.of((U) MAPPER.readValue(objectAsString, snapshotClass));

    } catch (Exception e) {
        LOGGER.error("A problem occured when trying to get snapshot object");
        LOGGER.error(e.getMessage());/*from w  w w . ja  va  2 s.  c o m*/
        return Optional.empty();
    }
}