Example usage for java.util Optional isPresent

Introduction

In this page you can find the example usage for java.util Optional isPresent.

Prototype

public boolean isPresent() 

Source Link

Document

If a value is present, returns true , otherwise false .

Usage

From source file:gmailclientfx.core.GmailClient.java

public static void authorizeUser() throws IOException {

    FLOW = new GoogleAuthorizationCodeFlow.Builder(TRANSPORT, JSON_FACTORY, CLIENT_ID, CLIENT_SECRET, SCOPES)
            //.setApprovalPrompt("select_account")
            .setAccessType("offline").build();

    String url = FLOW.newAuthorizationUrl().setRedirectUri(REDIRECT_URI).build();
    String txtURI = url + "&prompt=select_account";
    String code = "";

    if (Desktop.isDesktopSupported()) {
        try {/*w  ww. ja  v a2 s.c o m*/
            Desktop.getDesktop().browse(new URI(txtURI));

            TextInputDialog dialog = new TextInputDialog();
            dialog.setTitle("Verifikacija");
            dialog.setHeaderText(null);
            dialog.setContentText("Unesite verifikacijski kod: ");

            Optional<String> result = dialog.showAndWait();
            if (result.isPresent()) {
                code = result.get();
            }
        } catch (URISyntaxException ex) {
            Logger.getLogger(GmailClient.class.getName()).log(Level.SEVERE, null, ex);
            System.out.println("Greska prilikom logiranja!");
        }
    }

    GoogleTokenResponse tokenResponse = FLOW.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();
    CREDENTIAL = new GoogleCredential.Builder().setTransport(TRANSPORT).setJsonFactory(JSON_FACTORY)
            .setClientSecrets(CLIENT_ID, CLIENT_SECRET).addRefreshListener(new CredentialRefreshListener() {
                @Override
                public void onTokenResponse(Credential credential, TokenResponse tokenResponse) {
                    // Handle success.
                }

                @Override
                public void onTokenErrorResponse(Credential credential, TokenErrorResponse tokenErrorResponse) {
                    // Handle error.
                }
            }).build();

    CREDENTIAL.setFromTokenResponse(tokenResponse);
    GMAIL = new Gmail.Builder(TRANSPORT, JSON_FACTORY, CREDENTIAL).setApplicationName("JavaGmailSend").build();
    PROFILE = GMAIL.users().getProfile("me").execute();
    EMAIL = PROFILE.getEmailAddress();
    USER_ID = PROFILE.getHistoryId();
    ACCESS_TOKEN = CREDENTIAL.getAccessToken();
    REFRESH_TOKEN = CREDENTIAL.getRefreshToken();
    /*Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
    alert.setTitle("Verifikacija");
    alert.setHeaderText(null);
    alert.setContentText("Uspjena verifikacija!");
    alert.showAndWait();*/
}

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From source file:com.ikanow.aleph2.aleph2_rest_utils.RestCrudFunctions.java

private static <T> Response handleDeleteRequest(final Optional<String> query_json,
        final Optional<String> query_id, final ICrudService<T> crud_service, final Class<T> clazz) {
    //get id or a query object that was posted
    if (query_id.isPresent()) {
        //ID delete
        try {/* w ww. j ava  2s.  com*/
            final String id = query_id.get();
            _logger.debug("id: " + id);
            return Response.ok(RestUtils.convertSingleObjectToJson(crud_service.deleteObjectById(id).get(),
                    DELETE_SUCCESS_FIELD_NAME).toString()).build();
        } catch (InterruptedException | ExecutionException e) {
            return Response.status(Status.BAD_REQUEST)
                    .entity(ErrorUtils.getLongForm("Error converting input stream to string: {0}", e)).build();
        }
    } else if (query_json.isPresent()) {
        //Body delete
        try {
            final String json = query_json.get();
            _logger.debug("query: " + json);
            final QueryComponent<T> query = RestUtils.convertStringToQueryComponent(json, clazz,
                    Optional.empty());
            return Response.ok(RestUtils.convertSingleObjectToJson(crud_service.deleteObjectBySpec(query).get(),
                    DELETE_SUCCESS_FIELD_NAME).toString()).build();
        } catch (Exception e) {
            return Response.status(Status.BAD_REQUEST)
                    .entity(ErrorUtils.getLongForm("Error converting input stream to string: {0}", e)).build();
        }
    } else {
        //TODO actually we should probably just do something else when this is empty (like return first item, or search all and return limit 10, etc)
        return Response.status(Status.BAD_REQUEST)
                .entity("DELETE requires an id in the url or query in the body").build();
    }
}

---

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

public static Optional<String> extractDirectory(InputStream stream, String frameworkId, String executorId,
        String containerId) throws IOException {
    // TODO: prepare corresponding object type instead of using java.util.Map
    // Search path: {frameworks|complated_frameworks}/{completed_executors|executors}[.container='containerId'].directory
    ObjectMapper mapper = new ObjectMapper();
    Map<String, Map<String, Object>> map = mapper.readValue(stream, java.util.Map.class);
    List<Map<String, Object>> frameworks = new ArrayList<>();
    if (map.get("frameworks") != null) {
        frameworks.addAll((List) map.get("frameworks"));
    }//  ww  w  .j a va2 s  .  c om
    if (map.get("completed_frameworks") != null) {
        frameworks.addAll((List) map.get("completed_frameworks"));
    }

    // TODO: use json-path for cleaner and flexible code
    for (Map<String, Object> framework : frameworks) {
        List<Map<String, Object>> both = new ArrayList<>();
        List<Map<String, Object>> executors = (List) framework.get("executors");
        if (executors != null) {
            both.addAll(executors);
        }
        List<Map<String, Object>> completedExecutors = (List) framework.get("completed_executors");
        if (completedExecutors != null) {
            both.addAll(completedExecutors);
        }
        Optional<String> s = extractDirectoryFromExecutors(both, executorId, containerId);
        if (s.isPresent()) {
            return s;
        }
    }
    LOG.error("No matching directory at framework={}, executor={}, container={}", frameworkId, executorId,
            containerId);
    return Optional.empty();
}

---

From source file:br.com.blackhubos.eventozero.updater.assets.Asset.java

@SuppressWarnings("unchecked")
public static Optional<Asset> parseJsonObject(JSONObject jsonObject, MultiTypeFormatter formatter) {

    String url = null;//from  w w  w .j  av a  2 s .  com
    String name = null;
    String downloadUrl = null;

    Date createdDate = null;
    Date updatedDate = null;

    long id = Long.MIN_VALUE;
    long size = Long.MIN_VALUE;
    long downloads = Long.MIN_VALUE;

    AssetState state = null;

    Optional<String> label = Optional.empty();

    Optional<Uploader> uploader = Optional.empty();
    // Obtem todos valores do JSON
    for (Map.Entry entries : (Set<Map.Entry>) jsonObject.entrySet()) {

        Object key = entries.getKey();
        Object value = entries.getValue();
        String valueString = String.valueOf(value);

        switch (AssetInput.parseObject(key)) {
        case URL: {
            // URL do Asset
            url = valueString;
            break;
        }
        case ID: {
            // Id do Asset
            id = Long.parseLong(valueString);
            break;
        }
        case BROWSER_DOWNLOAD_URL: {
            // Link de download
            downloadUrl = valueString;
            break;
        }
        case CREATED_AT: {
            // Data de criao
            if (formatter.canFormat(Date.class)) {
                Optional<Date> dateResult = formatter.format(valueString, Date.class);
                if (dateResult.isPresent()) {
                    createdDate = dateResult.get();
                }
            }
            break;
        }
        case UPDATED_AT: {
            // Data de atualizao
            if (formatter.canFormat(Date.class)) {
                Optional<Date> dateResult = formatter.format(valueString, Date.class);
                if (dateResult.isPresent()) {
                    updatedDate = dateResult.get();
                }
            }
            break;
        }
        case NAME: {
            // Nome
            name = valueString;
            break;
        }
        case DOWNLOAD_COUNT: {
            // Quantidade de downloads
            downloads = Long.parseLong(valueString);
            break;
        }

        case LABEL: {
            /** Rtulo (se houver, caso contrrio, {@link Optional#absent()}  **/
            if (value == null) {
                label = Optional.empty();
            } else {
                label = Optional.of(valueString);
            }
            break;
        }

        case STATE: {
            // Estado
            state = AssetState.parseString(valueString);
            break;
        }

        case SIZE: {
            // Tamanho do arquivo (em bytes)
            size = Long.parseLong(valueString);
            break;
        }

        case UPLOADER: {
            // Quem envou (traduzido externalmente)
            uploader = Uploader.parseJsonObject((JSONObject) value, formatter);
            break;
        }

        default: {
        }
        }
    }

    if (id == Long.MIN_VALUE) {
        // Retorna um optional de valor ausente se no for encontrado o Asset.
        return Optional.empty();
    }

    // Cria um novo Asset
    return Optional.of(new Asset(url, name, downloadUrl, createdDate, updatedDate, id, size, downloads, state,
            label, uploader));
}

---

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

public static Optional<String> sandboxUri(String t, String master, String slaveId, String frameworkId,
        String executorId, String containerId, int retryRemain) {
    if (retryRemain > 0) {
        Optional<String> maybeUri = sandboxUri(t, master, slaveId, frameworkId, executorId, containerId);
        if (maybeUri.isPresent()) {
            return maybeUri;
        } else {/*from  ww w.ja  va  2 s . c  o  m*/
            // NOTE: this sleep is so short because this function may be called in the context of
            // Mesos Scheduler API callback
            // TODO: sole resolution is to remove all these uri fetching but to build it of Job information, including SlaveId
            LOG.warn("{} retry happening for frameworkId={}, executorId={}, containerId={}",
                    RETRY_LIMIT - retryRemain + 1, frameworkId, executorId, containerId);
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
            }
            return sandboxUri(t, master, slaveId, frameworkId, executorId, containerId, retryRemain - 1);
        }
    } else {
        LOG.error("{} retries on fetching sandbox URI failed", RETRY_LIMIT);
        return Optional.empty();
    }
}

---

From source file:co.runrightfast.vertx.orientdb.verticle.OrientDBVerticleTest.java

private static void initDatabase() {
    Optional<OrientDBService> orientDBService = TypeSafeObjectRegistry.GLOBAL_OBJECT_REGISTRY
            .get(OrientDBService.ORIENTDB_SERVICE);
    while (!orientDBService.isPresent()) {
        log.log(Level.WARNING, "Waiting for OrientDBService ...");
        sleep(Duration.ofSeconds(2));
        orientDBService = TypeSafeObjectRegistry.GLOBAL_OBJECT_REGISTRY.get(OrientDBService.ORIENTDB_SERVICE);
    }//from  www  . j ava  2s.co m

    final OServerAdmin admin = orientDBService.get().getServerAdmin();
    try {
        OrientDBUtils.createDatabase(admin, EventLogRepository.DB);
    } catch (final Exception e) {
        e.printStackTrace();
    } finally {
        admin.close();
    }

    EventLogRepository.initDatabase(
            orientDBService.get().getODatabaseDocumentTxSupplier(EventLogRepository.DB).get().get());
}

---

From source file:net.minecraftforge.fml.relauncher.libraries.LibraryManager.java

public static List<Artifact> flattenLists(File mcDir) {
    List<Artifact> merged = new ArrayList<>();
    for (ModList list : ModList.getBasicLists(mcDir)) {
        for (Artifact art : list.flatten()) {
            Optional<Artifact> old = merged.stream().filter(art::matchesID).findFirst();
            if (!old.isPresent()) {
                merged.add(art);/*www  .  j a v  a 2  s . c  o  m*/
            } else if (old.get().getVersion().compareTo(art.getVersion()) < 0) {
                merged.add(merged.indexOf(old.get()), art);
                merged.remove(old.get());
            }
        }
    }
    return merged;
}

---

From source file:net.sf.jabref.gui.desktop.JabRefDesktop.java

/**
 * Open a http/pdf/ps viewer for the given link string.
 *///ww  w .j av a 2s .c  om
public static void openExternalViewer(BibDatabaseContext databaseContext, String initialLink,
        String initialFieldName) throws IOException {
    String link = initialLink;
    String fieldName = initialFieldName;
    if ("ps".equals(fieldName) || "pdf".equals(fieldName)) {
        // Find the default directory for this field type:
        List<String> dir = databaseContext.getFileDirectory(fieldName);

        Optional<File> file = FileUtil.expandFilename(link, dir);

        // Check that the file exists:
        if (!file.isPresent() || !file.get().exists()) {
            throw new IOException("File not found (" + fieldName + "): '" + link + "'.");
        }
        link = file.get().getCanonicalPath();

        // Use the correct viewer even if pdf and ps are mixed up:
        String[] split = file.get().getName().split("\\.");
        if (split.length >= 2) {
            if ("pdf".equalsIgnoreCase(split[split.length - 1])) {
                fieldName = "pdf";
            } else if ("ps".equalsIgnoreCase(split[split.length - 1])
                    || ((split.length >= 3) && "ps".equalsIgnoreCase(split[split.length - 2]))) {
                fieldName = "ps";
            }
        }
    } else if (FieldName.DOI.equals(fieldName)) {
        Optional<DOI> doiUrl = DOI.build(link);
        if (doiUrl.isPresent()) {
            link = doiUrl.get().getURIAsASCIIString();
        }
        // should be opened in browser
        fieldName = FieldName.URL;
    } else if ("eprint".equals(fieldName)) {
        fieldName = FieldName.URL;

        // Check to see if link field already contains a well formated URL
        if (!link.startsWith("http://")) {
            link = ARXIV_LOOKUP_PREFIX + link;
        }
    }

    if (FieldName.URL.equals(fieldName)) { // html
        try {
            openBrowser(link);
        } catch (IOException e) {
            LOGGER.error("Error opening file '" + link + "'", e);
            // TODO: should we rethrow the exception?
            // In BasePanel.java, the exception is catched and a text output to the frame
            // throw e;
        }
    } else if ("ps".equals(fieldName)) {
        try {
            NATIVE_DESKTOP.openFile(link, "ps");
        } catch (IOException e) {
            LOGGER.error("An error occured on the command: " + link, e);
        }
    } else if ("pdf".equals(fieldName)) {
        try {
            NATIVE_DESKTOP.openFile(link, "pdf");
        } catch (IOException e) {
            LOGGER.error("An error occured on the command: " + link, e);
        }
    } else {
        LOGGER.info("Message: currently only PDF, PS and HTML files can be opened by double clicking");
    }
}

---

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

public static Optional<String> sandboxDownloadUri(String master, String slaveId, String frameworkId,
        String executorId, String containerId, String path) {
    Optional<String> base = sandboxUri("download", master, slaveId, frameworkId, executorId, containerId,
            RETRY_LIMIT);//from   ww w . j a v a  2  s .c  o m
    if (base.isPresent()) {
        try {
            String encodedPath = URLEncoder.encode(path, UTF_8.toString());
            return Optional.of(base.get() + encodedPath);
        } catch (UnsupportedEncodingException e) {
            return Optional.empty();
        }
    }
    return Optional.empty();
}

---

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

/** Takes a tuple expressed as LinkedHashMap<String, Object> (by convention the Objects are primitives, JsonNode, or POJO), and where one of the objects
 *  is a JSON representation of the original object and creates an object by folding them all together
 *  Note the other fields of the tuple take precedence over the JSON
 * @param in - the tuple/*www  .  ja  v  a2s. com*/
 * @param mapper - the Jackson object mapper
 * @param json_field - optional fieldname of the string representation of the JSON - if not present then the last field is used (set to eg "" if there is no base object)
 * @return
 */
public static JsonNode foldTuple(final LinkedHashMap<String, Object> in, final ObjectMapper mapper,
        final Optional<String> json_field) {
    try {
        // (do this imperatively to handle the "last element can be the base object case"
        final Iterator<Map.Entry<String, Object>> it = in.entrySet().iterator();
        ObjectNode acc = mapper.createObjectNode();
        while (it.hasNext()) {
            final Map.Entry<String, Object> kv = it.next();
            if ((json_field.isPresent() && kv.getKey().equals(json_field.get()))
                    || !json_field.isPresent() && !it.hasNext()) {
                acc = (ObjectNode) ((ObjectNode) mapper.readTree(kv.getValue().toString())).setAll(acc);
            } else {
                final ObjectNode acc_tmp = acc;
                Patterns.match(kv.getValue()).andAct().when(String.class, s -> acc_tmp.put(kv.getKey(), s))
                        .when(Long.class, l -> acc_tmp.put(kv.getKey(), l))
                        .when(Integer.class, l -> acc_tmp.put(kv.getKey(), l))
                        .when(Boolean.class, b -> acc_tmp.put(kv.getKey(), b))
                        .when(Double.class, d -> acc_tmp.put(kv.getKey(), d))
                        .when(JsonNode.class, j -> acc_tmp.set(kv.getKey(), j))
                        .when(Float.class, f -> acc_tmp.put(kv.getKey(), f))
                        .when(BigDecimal.class, f -> acc_tmp.put(kv.getKey(), f))
                        .otherwise(x -> acc_tmp.set(kv.getKey(), BeanTemplateUtils.toJson(x)));
            }
        }
        return acc;
    } catch (Exception e) {
        throw new RuntimeException(e);
    } // (convert to unchecked exception)
}

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