Example usage for com.google.gson JsonNull INSTANCE

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In this page you can find the example usage for com.google.gson JsonNull INSTANCE.

Prototype

JsonNull INSTANCE

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singleton for JsonNull

Usage

From source file:abtlibrary.utils.as24ApiClient.JSON.java

License:Apache License

/**
 * Serialize//from   w w  w .  j  av a 2 s . com
 *
 * @param src Date
 * @param typeOfSrc Type
 * @param context Json Serialization Context
 * @return Json Element
 */
@Override
public JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {
    if (src == null) {
        return JsonNull.INSTANCE;
    } else {
        return new JsonPrimitive(apiClient.formatDatetime(src));
    }
}

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From source file:bind.JsonTreeWriter.java

License:Apache License

@Override
public JsonWriter nullValue() throws IOException {
    put(JsonNull.INSTANCE);
    return this;
}

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From source file:br.com.thiaguten.contrib.JsonContrib.java

License:Apache License

private static String getJsonElementAsString(JsonElement jsonElement) {
    if (jsonElement == null) {
        return JsonNull.INSTANCE.toString();
    }//  w  w w .ja v a  2  s . c om
    if (jsonElement.isJsonPrimitive()) {
        return jsonElement.getAsString();
    }
    return jsonElement.toString();
}

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From source file:ccm.pay2spawn.types.guis.HelperGuiBase.java

License:Open Source License

public void storeValue(String key, JsonObject jsonObject, Object value) {
    if (key == null || jsonObject == null)
        return;/*from   w  w  w  .  j  a  va2  s.  c  o  m*/
    if (value == null) {
        jsonObject.add(key, JsonNull.INSTANCE);
        return;
    }
    if (Strings.isNullOrEmpty(value.toString()))
        jsonObject.remove(key);
    else
        jsonObject.addProperty(key,
                typeMap != null && typeMap.containsKey(key) ? typeMap.get(key) + ":" + value.toString()
                        : value.toString());
}

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From source file:co.cask.cdap.metrics.query.BatchMetricsHandler.java

License:Apache License

@POST
public void handleBatch(HttpRequest request, HttpResponder responder) throws IOException {
    if (!CONTENT_TYPE_JSON.equals(request.getHeader(HttpHeaders.Names.CONTENT_TYPE))) {
        responder.sendError(HttpResponseStatus.UNSUPPORTED_MEDIA_TYPE,
                "Only " + CONTENT_TYPE_JSON + " is supported.");
        return;// www .  j a va  2  s  .c  o m
    }

    JsonArray output = new JsonArray();

    Reader reader = new InputStreamReader(new ChannelBufferInputStream(request.getContent()), Charsets.UTF_8);
    String currPath = "";
    try {
        // decode requests
        List<URI> uris = GSON.fromJson(reader, new TypeToken<List<URI>>() {
        }.getType());
        LOG.trace("Requests: {}", uris);
        for (URI uri : uris) {
            currPath = uri.toString();
            // if the request is invalid, this will throw an exception and return a 400 indicating the request
            // that is invalid and why.
            MetricsRequest metricsRequest = parseAndValidate(request, uri);

            JsonObject json = new JsonObject();
            json.addProperty("path", metricsRequest.getRequestURI().toString());
            json.add("result", requestExecutor.executeQuery(metricsRequest));
            json.add("error", JsonNull.INSTANCE);

            output.add(json);
        }
        responder.sendJson(HttpResponseStatus.OK, output);
    } catch (MetricsPathException e) {
        responder.sendError(HttpResponseStatus.BAD_REQUEST,
                "Invalid path '" + currPath + "': " + e.getMessage());
    } catch (OperationException e) {
        LOG.error("Exception querying metrics ", e);
        responder.sendError(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Internal error while querying for metrics");
    } catch (ServerException e) {
        responder.sendError(HttpResponseStatus.INTERNAL_SERVER_ERROR,
                "Internal error while querying for metrics");
    } finally {
        reader.close();
    }
}

---

From source file:com.azure.webapi.LongSerializer.java

License:Open Source License

/**
 * Serializes a Long instance to a JsonElement, verifying the maximum and
 * minimum allowed values//from  ww w .  j  av a 2 s  .c om
 */
@Override
public JsonElement serialize(Long element, Type type, JsonSerializationContext ctx) {
    Long maxAllowedValue = 0x0020000000000000L;
    Long minAllowedValue = Long.valueOf(0xFFE0000000000000L);
    if (element != null) {
        if (element > maxAllowedValue || element < minAllowedValue) {
            throw new InvalidParameterException(
                    "Long value must be between " + minAllowedValue + " and " + maxAllowedValue);
        } else {
            return new JsonPrimitive(element);
        }
    } else {
        return JsonNull.INSTANCE;
    }

}

---

From source file:com.azure.webapi.MobileServiceJsonTable.java

License:Open Source License

/**
 * Executes the query against the table/* w  w w.  ja  va2s.c  o m*/
 * 
 * @param request
 *            Request to execute
 * @param callback
 *            Callback to invoke when the operation is completed
 */
private void executeTableOperation(ServiceFilterRequest request, final TableJsonOperationCallback callback) {
    // Create AsyncTask to execute the operation
    new RequestAsyncTask(request, mClient.createConnection()) {
        @Override
        protected void onPostExecute(ServiceFilterResponse result) {
            if (callback != null) {
                JsonObject newEntityJson = null;
                if (mTaskException == null && result != null) {
                    String content = null;
                    content = result.getContent();

                    // put and delete operations are not supposed to return entity for WEBAPI
                    JsonElement element = new JsonParser().parse(content);
                    if (element != null && element != JsonNull.INSTANCE) {
                        newEntityJson = element.getAsJsonObject();
                    }

                    callback.onCompleted(newEntityJson, null, result);

                } else {
                    callback.onCompleted(null, mTaskException, result);
                }
            }
        }
    }.execute();
}

---

From source file:com.baidu.rigel.biplatform.ac.model.callback.CallbackServiceInvoker.java

License:Open Source License

/**
 * callback?CallbackResponse404?cache??/*from   www.j ava 2 s .  c om*/
 * @param responseStr
 * @param type
 * @return CallbackResponse
 */
private static CallbackResponse convertStrToResponse(String responseStr, CallbackType type) {
    LOG.info("[INFO] --- --- message received from callback server  is {}", responseStr);
    CallbackResponse rs = new CallbackResponse();
    long begin = System.currentTimeMillis();
    if (StringUtils.isEmpty(responseStr)) {
        throw new RuntimeException("???");
    }
    JsonObject json = new JsonParser().parse(responseStr).getAsJsonObject();
    int status = json.get("status").getAsInt();
    String message = json.get("message") == null || json.get("message") == JsonNull.INSTANCE ? "unknown"
            : json.get("message").getAsString();
    String provider = json.get("provider") == null || json.get("provider") == JsonNull.INSTANCE ? "unknown"
            : json.get("provider").getAsString();
    String cost = json.get("cost") == null || json.get("cost") == JsonNull.INSTANCE ? ""
            : json.get("cost").getAsString();
    String version = json.get("version") == null || json.get("version") == JsonNull.INSTANCE ? "unknown"
            : json.get("version").getAsString();
    LOG.info("[INFO] ------------------------------callback response desc -----------------------------------");
    LOG.info("[INFO] --- --- status : {}", status);
    LOG.info("[INFO] --- --- message : {}", message);
    LOG.info("[INFO] --- --- provider : {}", provider);
    LOG.info("[INFO] --- --- cost : {}", cost);
    LOG.info("[INFO] --- --- callback version : {}", version);
    LOG.info("[INFO] -----------------------------end print response desc -----------------------------------");
    LOG.info("[INFO] --- --- package result to CallbackResponse cost {} ms",
            (System.currentTimeMillis() - begin));
    rs.setCost(Integer.valueOf(StringUtils.isEmpty(cost) ? "0" : cost));
    rs.setStatus(getStatus(status));
    rs.setProvider(provider);
    rs.setVersion(version);
    rs.setMessage(getNlsMessage(status));
    if (ResponseStatus.SUCCESS.getValue() == status) {
        rs.setData(getCallbackValue(json.get("data").toString(), type));
    }
    return rs;
}

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From source file:com.balajeetm.mystique.core.AbstractMystTurn.java

License:Open Source License

public JsonElement transform(List<JsonElement> source, JsonObject deps, JsonObject aces, JsonObject turn,
        JsonObject resultWrapper) {//from  w ww .  j  a  v  a2 s  . com

    Boolean turnExists = mystiqueLever.isNotNull(turn);
    JsonObject updatedAces = new JsonObject();
    if (turnExists) {
        JsonObject localAces = mystiqueLever.asJsonObject(turn.get(MystiqueConstants.ACES), (JsonObject) null);
        if (mystiqueLever.isNotNull(localAces)) {
            // Aces will only work on first source
            JsonElement first = mystiqueLever.getFirst(source);
            updatedAces = mystiqueLever.getUpdatedAces(first, localAces, deps, updatedAces);
        }
    }

    mystiqueLever.simpleMerge(updatedAces, mystiqueLever.asJsonObject(aces, new JsonObject()));

    JsonElement transform = JsonNull.INSTANCE;
    try {
        transform = transmute(source, deps, updatedAces, turn);
    } catch (RuntimeException e) {
        // Any error during transmute, log error
        String msg = String.format("Error transforming input with specification for turn %s - %s", turn,
                e.getMessage());
        logger.info(msg, e);
    }

    if (turnExists) {
        if (mystiqueLever.isNull(transform)) {
            JsonObject defaultJson = mystiqueLever.asJsonObject(turn.get(MystiqueConstants.DEFAULT));
            transform = transformToDefault(defaultJson, source, deps, updatedAces);
        }

        // set the result
        JsonArray to = mystiqueLever.getJpath(turn.get(MystiqueConstants.TO));
        Boolean optional = mystiqueLever.asBoolean(turn.get(MystiqueConstants.OPTIONAL), Boolean.FALSE);

        mystiqueLever.set(resultWrapper, to, transform, updatedAces, optional);
    }

    return transform;
}

---

From source file:com.balajeetm.mystique.core.AbstractMystTurn.java

License:Open Source License

/**
 * Transform on condition.//w  w  w .j  a  v a  2s . c o m
 *
 * @param conditionalJson the conditional json
 * @param source the source
 * @param deps the deps
 * @param aces the aces
 * @param resultWrapper the result wrapper
 * @return the json element
 */
protected JsonElement transformToDefault(JsonObject conditionalJson, List<JsonElement> source, JsonObject deps,
        JsonObject aces, JsonObject resultWrapper) {
    JsonElement transform = JsonNull.INSTANCE;
    if (mystiqueLever.isNotNull(conditionalJson)) {
        // Should not be null, can be json null
        JsonElement value = conditionalJson.get(MystiqueConstants.VALUE);
        if (null != value) {
            transform = value;
        } else {
            JsonObject defaultTurn = mystiqueLever.asJsonObject(conditionalJson.get(MystiqueConstants.TURN));
            if (mystiqueLever.isNotNull(defaultTurn)) {
                MystTurn mystique = factory.getMystTurn(defaultTurn);
                transform = mystique.transform(source, deps, aces, defaultTurn, resultWrapper);
            }
        }
    }
    return transform;
}

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