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:jobhunter.api.infojobs.Client.java

public <T> Optional<T> get(Class<T> clazz, String url) throws InfoJobsAPIException {
    HttpGet httpGet = new HttpGet(url);
    try (CloseableHttpClient client = HttpClients.custom().setDefaultCredentialsProvider(provider).build()) {
        try (CloseableHttpResponse response = client.execute(httpGet)) {
            if (response.getStatusLine().getStatusCode() == 200) {
                T entity = mapper.readValue(response.getEntity().getContent(), clazz);
                return Optional.of(entity);
            } else {
                Error error = mapper.readValue(response.getEntity().getContent(), Error.class);
                throw new InfoJobsAPIException(error);
            }//from  w  ww  . j ava  2s .  c om
        }
    } catch (IOException e) {
        l.error("Failed to GET {} from {}", clazz.getCanonicalName(), url, e);
        throw new InfoJobsAPIException(e.getLocalizedMessage());
    }
}

From source file:tds.assessment.web.endpoints.AssessmentControllerTest.java

@Test
public void shouldFindAssessmentByKey() {
    final String clientName = "SBAC_PT";
    final String assessmentKey = "theKey";
    Assessment assessment = new Assessment();
    assessment.setKey(assessmentKey);/*  w  w  w .j av a2  s .  com*/

    when(service.findAssessment(clientName, assessmentKey)).thenReturn(Optional.of(assessment));
    ResponseEntity<Assessment> response = controller.findAssessment(clientName, assessmentKey);
    verify(service).findAssessment(clientName, assessmentKey);

    assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
    assertThat(response.getBody().getKey()).isEqualTo("theKey");
}

From source file:org.hawkular.services.rest.test.InventoryHelper.java

private static Optional<ExtendedInventoryStructure> rebuildFromChunks(JsonNode dataNode) {
    if (!dataNode.has(0)) {
        return Optional.empty();
    }/*ww w  . jav a  2s  .c om*/
    try {
        JsonNode masterNode = dataNode.get(0);
        final byte[] all;
        if (masterNode.has("tags") && masterNode.get("tags").has("chunks")) {
            int nbChunks = masterNode.get("tags").get("chunks").asInt();
            int totalSize = masterNode.get("tags").get("size").asInt();
            byte[] master = masterNode.get("value").binaryValue();
            if (master.length == 0) {
                return Optional.empty();
            }
            all = new byte[totalSize];
            int pos = 0;
            System.arraycopy(master, 0, all, pos, master.length);
            pos += master.length;
            for (int i = 1; i < nbChunks; i++) {
                JsonNode slaveNode = dataNode.get(i);
                byte[] slave = slaveNode.get("value").binaryValue();
                System.arraycopy(slave, 0, all, pos, slave.length);
                pos += slave.length;
            }
        } else {
            // Not chunked
            all = masterNode.get("value").binaryValue();
        }
        String decompressed = decompress(all);
        ExtendedInventoryStructure structure = MAPPER.readValue(decompressed, ExtendedInventoryStructure.class);
        return Optional.of(structure);
    } catch (Exception e) {
        throw Throwables.propagate(e);
    }
}

From source file:com.bekwam.resignator.NewPasswordController.java

@FXML
public void ok(ActionEvent evt) {
    if (logger.isDebugEnabled()) {
        logger.debug("[OK]");
    }//  w  w w  .jav  a2  s .co m

    String errMsg = validate();

    if (StringUtils.isEmpty(errMsg)) {
        confirmedPassword = Optional.of(pfPassword.getText());

        if (logger.isDebugEnabled()) {
            logger.debug("[OK] password is present?="
                    + (confirmedPassword.isPresent() && !StringUtils.isEmpty(confirmedPassword.get())));
        }

        if (logger.isDebugEnabled()) {
            logger.debug("[OK] npc id={}", this.hashCode());
        }

        synchronized (this) {
            notify();
        }

        ((Button) evt.getSource()).getScene().getWindow().hide();

    } else {
        lblError.setVisible(true);
        lblError.setText(errMsg);
    }
}

From source file:com.ikanow.aleph2.security.service.IkanowV1UserGroupRoleProvider.java

@SuppressWarnings("unchecked")
protected void initDb() {
    if (_core_management_db == null) {
        _core_management_db = _context.getCoreManagementDbService();
    }/*  w  w  w .ja  va  2  s .c om*/
    if (_underlying_management_db == null) {
        _underlying_management_db = _context.getService(IManagementDbService.class, Optional.empty()).get();
    }
    String personOptions = "social.person";
    personDb = _underlying_management_db
            .getUnderlyingPlatformDriver(ICrudService.class, Optional.of(personOptions)).get();
}

From source file:io.github.lxgaming.teleportbow.commands.AbstractCommand.java

@Override
public final Optional<Text> getShortDescription(CommandSource commandSource) {
    if (StringUtils.length(getDescription()) > 53) {
        return Optional.of(Text.of(StringUtils.substring(getDescription(), 0, 50), "..."));
    }//from  www.j  a v  a2  s . c o  m

    return Optional.of(Text.of(StringUtils.defaultIfBlank(getDescription(), "No description provided")));
}

From source file:de.mas.wiiu.jnus.utils.FSTUtils.java

public static Optional<FSTEntry> getChildOfDirectory(FSTEntry root, String filename) {
    for (FSTEntry cur : root.getChildren()) {
        if (cur.getFilename().equalsIgnoreCase(filename)) {
            return Optional.of(cur);
        }//from  w ww .  j a  v a2s .co  m
    }
    return Optional.empty();
}

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

@Override
public Optional<String> computeArn(JsonNode n) {
    return Optional.of(createEc2Arn("route-table", n.path("aws_routeTableId").asText()));
}

From source file:org.dswarm.graph.gdm.test.GDMResource3Test.java

@Ignore
@Test/*from  ww w .  ja va2 s .c om*/
public void mabxmlVersioningTest() throws IOException {

    final ObjectNode requestJson = getMABXMLContentSchema();

    // 157, 149
    readGDMFromDBThatWasWrittenAsGDM(Optional.of(requestJson), "versioning/mabxml_dmp.gson",
            "versioning/mabxml_dmp2.gson", "http://data.slub-dresden.de/resources/1",
            "http://www.ddb.de/professionell/mabxml/mabxml-1.xsd#datensatzType", 157, 149, false,
            Optional.empty());
}

From source file:com.vsct.dt.hesperides.indexation.model.ElasticSearchEntity.java

public Optional<T> getEntity() {
    if (this.get != null && this.get.isFound()) {
        return Optional.of(this.get.getSource());
    } else {/*from www.  ja v  a 2 s  . c  om*/
        return Optional.empty();
    }
}