Example usage for java.util Optional get

Introduction

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

Prototype

public T get() 

Source Link

Document

If a value is present, returns the value, otherwise throws NoSuchElementException .

Usage

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;/*w  w w.  j a  v  a2 s. c o  m*/
    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: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/*from   w w  w  .  j a  v  a  2 s. c  o m*/
 * @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)
}

---

From source file:com.helion3.prism.api.query.QueryBuilder.java

/**
 * Parses a parameter argument.//ww w .ja  v  a 2  s . c o m
 *
 * @param session QuerySession current session.
 * @param query Query query being built.
 * @param parameter String argument which should be a parameter
 * @return Optional<ListenableFuture<?>>
 * @throws ParameterException
 */
private static Optional<ListenableFuture<?>> parseParameterFromArgument(QuerySession session, Query query,
        Pair<String, String> parameter) throws ParameterException {
    // Simple validation
    if (parameter.getKey().length() <= 0 || parameter.getValue().length() <= 0) {
        throw new ParameterException("Invalid empty value for parameter \"" + parameter.getKey() + "\".");
    }

    // Find a handler
    Optional<ParameterHandler> optionalHandler = Prism.getParameterHandler(parameter.getKey());
    if (!optionalHandler.isPresent()) {
        throw new ParameterException(
                "\"" + parameter.getKey() + "\" is not a valid parameter. No handler found.");
    }

    ParameterHandler handler = optionalHandler.get();

    // Allows this command source?
    if (!handler.acceptsSource(session.getCommandSource().get())) {
        throw new ParameterException(
                "This command source may not use the \"" + parameter.getKey() + "\" parameter.");
    }

    // Validate value
    if (!handler.acceptsValue(parameter.getValue())) {
        throw new ParameterException(
                "Invalid value \"" + parameter.getValue() + "\" for parameter \"" + parameter.getKey() + "\".");
    }

    return handler.process(session, parameter.getKey(), parameter.getValue(), query);
}

---

From source file:com.formkiq.core.form.bean.ObjectBuilder.java

/**
 * Populate {@link FormJSON} from {@link Map}.
 * @param form {@link FormJSON}/*from  ww w .  j a v a2 s  .c om*/
 * @param values {@link Map}
 */
public static void populate(final FormJSON form, final Map<String, String> values) {

    if (values != null) {
        for (Map.Entry<String, String> e : values.entrySet()) {

            Optional<FormJSONField> op = findValueByKey(form, e.getKey());
            if (op.isPresent()) {
                if (e.getValue() != null) {
                    op.get().setValue(e.getValue());
                } else {
                    op.get().setValue("");
                }
            }
        }
    }
}

---

From source file:org.openmhealth.shim.jawbone.mapper.JawboneDataPointMapper.java

/**
 * @param listEntryNode an individual entry node from the "items" array of a Jawbone endpoint response
 * @param unixEpochTimestamp unix epoch seconds timestamp from a time property in the list entry node
 * @return the appropriate {@link ZoneId} for the timestamp parameter based on the timezones contained within the
 * list entry node// w w w  .ja  v  a  2  s.c o  m
 */
static ZoneId getTimeZoneForTimestamp(JsonNode listEntryNode, Long unixEpochTimestamp) {

    Optional<JsonNode> optionalTimeZonesNode = asOptionalNode(listEntryNode, "details.tzs");
    Optional<JsonNode> optionalTimeZoneNode = asOptionalNode(listEntryNode, "details.tz");

    ZoneId zoneIdForTimestamp = ZoneOffset.UTC; // set default to Z in case problems with getting timezone

    if (optionalTimeZonesNode.isPresent() && optionalTimeZonesNode.get().size() > 0) {

        JsonNode timeZonesNode = optionalTimeZonesNode.get();

        if (timeZonesNode.size() == 1) {
            zoneIdForTimestamp = parseZone(timeZonesNode.get(0).get(TIMEZONE_ENUM_INDEX_TZ));
        } else {

            long currentLatestTimeZoneStart = 0;
            for (JsonNode timeZoneNodesEntry : timeZonesNode) {

                long timeZoneStartTime = timeZoneNodesEntry.get(TIMEZONE_ENUM_INDEX_START).asLong();

                if (unixEpochTimestamp >= timeZoneStartTime) {

                    if (timeZoneStartTime > currentLatestTimeZoneStart) { // we cannot guarantee the order of the
                        // "tzs" array and we need to find the latest timezone that started before our time

                        zoneIdForTimestamp = parseZone(timeZoneNodesEntry.get(TIMEZONE_ENUM_INDEX_TZ));
                        currentLatestTimeZoneStart = timeZoneStartTime;
                    }
                }
            }
        }
    } else if (optionalTimeZoneNode.isPresent() && !optionalTimeZoneNode.get().isNull()) {

        zoneIdForTimestamp = parseZone(optionalTimeZoneNode.get());
    }

    return zoneIdForTimestamp;
}

---

From source file:io.github.retz.web.AppRequestHandler.java

static String loadApp(Request req, Response res) throws JsonProcessingException, IOException {
    LOG.debug(LoadAppRequest.resourcePattern());
    Optional<AuthHeader> authHeaderValue = getAuthInfo(req);
    res.type("application/json");

    // TODO: check key from Authorization header matches a key in Application object
    LoadAppRequest loadAppRequest = MAPPER.readValue(req.bodyAsBytes(), LoadAppRequest.class);
    LOG.debug("app (id={}, owner={}), requested by {}", loadAppRequest.application().getAppid(),
            loadAppRequest.application().getOwner(), authHeaderValue.get().key());

    // Compare application owner and requester
    validateOwner(req, loadAppRequest.application());

    Optional<Application> tmp = Applications.get(loadAppRequest.application().getAppid());
    if (tmp.isPresent()) {
        if (!tmp.get().getOwner().equals(loadAppRequest.application().getOwner())) {
            res.status(403);//from w  w  w  .  j  a  v a 2s . c  o  m
            LOG.error("Application {} is already owned by ", loadAppRequest.application().getAppid(),
                    tmp.get().getOwner());
            return MAPPER.writeValueAsString(
                    new ErrorResponse("The application name is already used by other user"));
        }
    }

    if (!(loadAppRequest.application().container() instanceof DockerContainer)) {
        if (loadAppRequest.application().getUser().isPresent()
                && loadAppRequest.application().getUser().get().equals("root")) {
            res.status(400);
            return MAPPER
                    .writeValueAsString(new ErrorResponse("root user is only allowed with Docker container"));
        }
    }

    Application app = loadAppRequest.application();
    LOG.info("Registering application name={} owner={}", app.getAppid(), app.getOwner());
    boolean result = Applications.load(app);

    if (result) {
        res.status(200);
        LoadAppResponse response = new LoadAppResponse();
        response.ok();
        return MAPPER.writeValueAsString(response);
    } else {

        res.status(400);
        return MAPPER.writeValueAsString(new ErrorResponse("cannot load application"));
    }

}

---

From source file:io.github.retz.web.JobRequestRouter.java

public static String getDir(spark.Request req, spark.Response res) throws IOException {
    int id = Integer.parseInt(req.params(":id"));

    String path = req.queryParams("path");
    Optional<Job> job = JobQueue.getJob(id);

    LOG.debug("get-path: id={}, path={}", id, path);
    res.type("application/json");

    // Translating default as SparkJava's router doesn't route '.' or empty string
    if (ListFilesRequest.DEFAULT_SANDBOX_PATH.equals(path)) {
        path = "";
    }/* w  w  w  . jav  a2  s .c  o  m*/

    List ret;
    if (job.isPresent() && job.get().url() != null) {
        try {
            String json = fetchHTTPDir(job.get().url(), path);
            ret = MAPPER.readValue(json, new TypeReference<List<DirEntry>>() {
            });
        } catch (FileNotFoundException e) {
            res.status(404);
            LOG.warn("path {} not found", path);
            return MAPPER.writeValueAsString(new ErrorResponse(path + " not found"));
        }
    } else {
        ret = Arrays.asList();
    }

    ListFilesResponse listFilesResponse = new ListFilesResponse(job, ret);
    listFilesResponse.status("ok");
    return MAPPER.writeValueAsString(listFilesResponse);
}

---

From source file:io.github.retz.web.JobRequestHandler.java

private static Optional<Job> getJobAndVerify(Request req) throws IOException {
    int id = Integer.parseInt(req.params(":id"));
    Optional<AuthHeader> authHeaderValue = WebConsole.getAuthInfo(req);

    if (!authHeaderValue.isPresent()) {
        LOG.debug("Authorization header lacking?");
        return Optional.empty();
    }/*from w  w w .  j a  va2  s  . c  om*/
    LOG.debug("get-xxx id={}, user={}", id, authHeaderValue.get().key());

    Optional<AppJobPair> maybePair = Database.getInstance().getAppJob(id);
    if (maybePair.isPresent()) {
        AppJobPair pair = maybePair.get();
        if (pair.application().getOwner().equals(authHeaderValue.get().key())) {
            return Optional.of(pair.job());
        }
    }
    return Optional.empty();
}

---

From source file:com.freiheit.fuava.sftp.util.FilenameUtil.java

/**
 * Returns the lastest date/time from a list of filenames.
 *///from   w  w w  .  j a  v a2s . c  o m
@CheckForNull
public static String extractLatestDateFromFilenames(final List<String> entryList, final FileType fileType,
        @Nullable final RemoteFileStatus status) throws ParseException {
    final Optional<String> maxDate = entryList.stream().filter(p -> p != null)
            .filter(f -> FilenameUtil.matchesSearchedFile(f, fileType, null, status))
            .max((a, b) -> Long.compare(getDateFromFilename(a), getDateFromFilename(b)));

    if (!maxDate.isPresent()) {
        return null; // no timestamp found
    }
    final String max = maxDate.get();

    return String.valueOf(getDateFromFilenameWithDelimiter(max));
}

---

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);//ww w  . j a  v  a 2s  .com
            } else if (old.get().getVersion().compareTo(art.getVersion()) < 0) {
                merged.add(merged.indexOf(old.get()), art);
                merged.remove(old.get());
            }
        }
    }
    return merged;
}

---

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