Example usage for com.google.gson JsonElement getAsString

List of usage examples for com.google.gson JsonElement getAsString

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Introduction

In this page you can find the example usage for com.google.gson JsonElement getAsString.

Prototype

public String getAsString()

Source Link

Document

convenience method to get this element as a string value.

Usage

From source file:com.google.security.wycheproof.JsonUtil.java

License:Apache License

/** 
 * Converts a JsonElement into a byte array.
 * @param element a JsonElement containing an encoded byte array. 
 *        Wycheproof represents byte arrays as hexadeciamal strings.
 * @throws ClassCastException if element is not a valid string value.
 * @throws IllegalStateException - if element contains an array.
 *//*  w  w w.j a  v a 2 s. c  o m*/
public static byte[] asByteArray(JsonElement element) {
    String hex = element.getAsString();
    return TestUtil.hexToBytes(hex);
}

From source file:com.google.security.wycheproof.JsonUtil.java

License:Apache License

/**
 * Converts a JsonElement into a BigInteger.
 * @param element a JsonElement containing a BigInteger. 
 * Wycheproof represents BigIntegers as hexadecimal strings using
 * twos complement representation.//from  ww w  . ja  va 2 s  .  c  o  m
 * <p> E.g., 31 is represented as "1f", -1 is represented as "f", and
 * 255 is represented as "0ff".
 * @throws ClassCastException if element is not a valid string value.
 * @throws IllegalStateException if element contains an array.
 * @throws NumberFormatException if representation of the BigInteger is invalid.
 */
public static BigInteger asBigInteger(JsonElement element) {
    String hex = element.getAsString();
    // TODO(bleichen): Consider to change the representation of BigIntegers in
    //   Wycheproof as hexadecimal string with a sign.
    if (hex.length() % 2 == 1) {
        if (hex.charAt(0) >= '0' && hex.charAt(0) <= '7') {
            hex = "0" + hex;
        } else {
            hex = "f" + hex;
        }
    }
    return new BigInteger(TestUtil.hexToBytes(hex));
}

From source file:com.google.wave.api.event.EventSerializer.java

License:Apache License

/**
 * Deserializes the given {@link JsonObject} into an {@link Event}, and
 * assign the given {@link Wavelet} to the {@link Event}.
 *
 * @param wavelet the wavelet where the event occurred.
 * @param json the JSON representation of {@link Event}.
 * @param context the deserialization context.
 * @return an instance of {@link Event}.
 *
 * @throw {@link EventSerializationException} if there is a problem
 *     deserializing the event JSON.//  w ww  .  j av  a2  s .co m
 */
public static Event deserialize(Wavelet wavelet, EventMessageBundle bundle, JsonObject json,
        JsonDeserializationContext context) throws EventSerializationException {
    // Construct the event object.
    String eventTypeString = json.get(TYPE).getAsString();
    EventType type = EventType.valueOfIgnoreCase(eventTypeString);
    if (type == EventType.UNKNOWN) {
        throw new EventSerializationException(
                "Trying to deserialize event JSON with unknown " + "type: " + json, json);
    }

    // Parse the generic parameters.
    String modifiedBy = json.get(MODIFIED_BY).getAsString();
    Long timestamp = json.get(TIMESTAMP).getAsLong();

    // Construct the event object.
    Class<? extends Event> clazz = type.getClazz();
    Constructor<? extends Event> ctor;
    try {
        ctor = clazz.getDeclaredConstructor();
        ctor.setAccessible(true);
        Event event = ctor.newInstance();

        // Set the default fields from AbstractEvent.
        Class<?> rootClass = AbstractEvent.class;
        setField(event, rootClass.getDeclaredField(WAVELET), wavelet);
        setField(event, rootClass.getDeclaredField(MODIFIED_BY), modifiedBy);
        setField(event, rootClass.getDeclaredField(TIMESTAMP), timestamp);
        setField(event, rootClass.getDeclaredField(TYPE), type);
        setField(event, rootClass.getDeclaredField(BUNDLE), bundle);

        JsonObject properties = json.get(PROPERTIES).getAsJsonObject();

        // Set the blip id field, that can be null for certain events, such as
        // OPERATION_ERROR.
        JsonElement blipId = properties.get(BLIP_ID);
        if (blipId != null && !(blipId instanceof JsonNull)) {
            setField(event, rootClass.getDeclaredField(BLIP_ID), blipId.getAsString());
        }

        // Set the additional fields.
        for (Field field : clazz.getDeclaredFields()) {
            String fieldName = field.getName();
            if (properties.has(fieldName)) {
                setField(event, field, context.deserialize(properties.get(fieldName), field.getGenericType()));
            }
        }
        return event;
    } catch (NoSuchMethodException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    } catch (NoSuchFieldException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    } catch (InstantiationException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    } catch (IllegalAccessException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    } catch (InvocationTargetException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    } catch (JsonParseException e) {
        throw new EventSerializationException("Unable to deserialize event JSON: " + json, json);
    }
}

From source file:com.google.wave.api.impl.OperationRequestGsonAdaptor.java

License:Apache License

/**
 * Returns a property of {@code JsonObject} as a {@link String}, then remove
 * that property./*  ww  w  . j  a v  a 2 s .co m*/
 *
 * @param jsonObject the {@code JsonObject} to get the property from.
 * @param key the key of the property.
 * @return the property as {@link String}, or {@code null} if not found.
 */
private static String getPropertyAsStringThenRemove(JsonObject jsonObject, ParamsProperty key) {
    JsonElement property = jsonObject.get(key.key());
    if (property != null) {
        jsonObject.remove(key.key());
        if (property.isJsonNull()) {
            return null;
        }
        return property.getAsString();
    }
    return null;
}

From source file:com.google.wave.api.RobotSerializer.java

License:Apache License

/**
 * Determines the protocol version of a given operation bundle JSON by
 * inspecting the first operation in the bundle. If it is a
 * {@code robot.notify} operation, and contains {@code protocolVersion}
 * parameter, then this method will return the value of that parameter.
 * Otherwise, this method will return the default version.
 *
 * @param operationBundle the operation bundle to check.
 * @return the wire protocol version of the given operation bundle.
 *//*from  w w  w. ja va2  s .  c  o  m*/
private ProtocolVersion determineProtocolVersion(JsonArray operationBundle) {
    if (operationBundle.size() == 0 || !operationBundle.get(0).isJsonObject()) {
        return defaultProtocolVersion;
    }

    JsonObject firstOperation = operationBundle.get(0).getAsJsonObject();
    if (!firstOperation.has(RequestProperty.METHOD.key())) {
        return defaultProtocolVersion;
    }

    String method = firstOperation.get(RequestProperty.METHOD.key()).getAsString();
    if (isRobotNotifyOperationMethod(method)) {
        JsonObject params = firstOperation.get(RequestProperty.PARAMS.key()).getAsJsonObject();
        if (params.has(ParamsProperty.PROTOCOL_VERSION.key())) {
            JsonElement protocolVersionElement = params.get(ParamsProperty.PROTOCOL_VERSION.key());
            if (!protocolVersionElement.isJsonNull()) {
                return ProtocolVersion.fromVersionString(protocolVersionElement.getAsString());
            }
        }
    }
    return defaultProtocolVersion;
}

From source file:com.google.wave.splash.data.serialize.JsonSerializer.java

License:Apache License

/**
 * Parses a string of json from a wave.robot.fetchWave into a result.
 *
 * @param json the json to parse./*w w  w. ja  va2  s  . c  o m*/
 * @return the result object, which may not contain a wavelet.
 */
@Timed
public FetchWaveletResult parseFetchWaveletResult(String json) {
    JsonObject dataObject = getDataObject(json);
    if (dataObject == null || !dataObject.has("waveletData")) {
        LOG.warning("Fetch returned empty result.");
        return FetchWaveletResult.emptyResult();
    }

    JsonObject waveletDataJson = dataObject.getAsJsonObject("waveletData");
    OperationQueue operationQueue = new OperationQueue();
    WaveletData waveletData = gson.fromJson(waveletDataJson, WaveletData.class);

    Map<String, Blip> blips = Maps.newHashMap();
    HashMap<String, BlipThread> threads = Maps.newHashMap();
    Wavelet wavelet = Wavelet.deserialize(operationQueue, blips, threads, waveletData);

    JsonObject threadMap = dataObject.getAsJsonObject("threads");
    if (null != threadMap) {
        for (Map.Entry<String, JsonElement> entries : threadMap.entrySet()) {
            JsonObject threadElement = entries.getValue().getAsJsonObject();
            int location = threadElement.get("location").getAsInt();

            List<String> blipIds = Lists.newArrayList();
            for (JsonElement blipId : threadElement.get("blipIds").getAsJsonArray()) {
                blipIds.add(blipId.getAsString());
            }

            BlipThread thread = new BlipThread(entries.getKey(), location, blipIds, blips);
            threads.put(thread.getId(), thread);
        }
    }

    JsonObject blipMap = dataObject.getAsJsonObject("blips");
    for (Map.Entry<String, JsonElement> entries : blipMap.entrySet()) {
        BlipData blipData = gson.fromJson(entries.getValue(), BlipData.class);
        Blip blip = Blip.deserialize(operationQueue, wavelet, blipData);
        blips.put(blipData.getBlipId(), blip);
    }

    return new FetchWaveletResult(wavelet);
}

From source file:com.googleapis.ajax.services.impl.BaseGoogleSearchApiQuery.java

License:Apache License

/**
 * Gets the gson builder.//from w  ww. jav  a 2 s.  c om
 * 
 * @return the gson builder
 */
protected GsonBuilder getGsonBuilder() {
    GsonBuilder builder = new GsonBuilder();
    builder.setDateFormat(ApplicationConstants.RFC822DATEFORMAT);
    builder.registerTypeAdapter(ListingType.class, new JsonDeserializer<ListingType>() {

        @Override
        public ListingType deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return ListingType.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(PatentStatus.class, new JsonDeserializer<PatentStatus>() {

        @Override
        public PatentStatus deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return PatentStatus.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(VideoType.class, new JsonDeserializer<VideoType>() {

        @Override
        public VideoType deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return VideoType.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(ViewPortMode.class, new JsonDeserializer<ViewPortMode>() {

        @Override
        public ViewPortMode deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return ViewPortMode.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(GsearchResultClass.class, new JsonDeserializer<GsearchResultClass>() {

        @Override
        public GsearchResultClass deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return GsearchResultClass.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(PhoneNumberType.class, new JsonDeserializer<PhoneNumberType>() {

        @Override
        public PhoneNumberType deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return PhoneNumberType.fromValue(arg0.getAsString());
        }

    });
    builder.registerTypeAdapter(Language.class, new JsonDeserializer<Language>() {

        @Override
        public Language deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return Language.fromValue(arg0.getAsString());
        }
    });

    return builder;
}

From source file:com.googleapis.maps.services.impl.BaseGoogleMapsApiQuery.java

License:Apache License

/**
 * Gets the gson builder.//from  w ww.  j  av  a  2s.  c om
 * 
 * @return the gson builder
 */
protected GsonBuilder getGsonBuilder() {
    GsonBuilder builder = new GsonBuilder();
    builder.setDateFormat(ApplicationConstants.RFC822DATEFORMAT);
    builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
    builder.registerTypeAdapter(LocationType.class, new JsonDeserializer<LocationType>() {
        @Override
        public LocationType deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return LocationType.fromValue(arg0.getAsString());
        }
    });
    builder.registerTypeAdapter(AddressComponentType.class, new JsonDeserializer<AddressComponentType>() {
        @Override
        public AddressComponentType deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
                throws JsonParseException {
            return AddressComponentType.fromValue(arg0.getAsString());
        }
    });
    //      builder.registerTypeAdapter(TravelMode.class, new JsonDeserializer<TravelMode>() {
    //         @Override
    //         public TravelMode deserialize(JsonElement arg0, Type arg1,
    //               JsonDeserializationContext arg2) throws JsonParseException {
    //            return TravelMode.fromValue(arg0.getAsString());
    //         }
    //      });

    return builder;
}

From source file:com.googlesource.gerrit.plugins.events.BranchHelper.java

License:Apache License

protected static String asString(JsonElement el) {
    if (el != null) {
        try {//  w w  w .  ja v  a 2s  .  com
            return el.getAsString();
        } catch (RuntimeException e) {
        }
    }
    return null;
}

From source file:com.googlesource.gerrit.plugins.oauth.AirVantageOAuthService.java

License:Apache License

@Override
public OAuthUserInfo getUserInfo(OAuthToken token) throws IOException {
    OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);
    Token t = new Token(token.getToken(), token.getSecret(), token.getRaw());
    service.signRequest(t, request);//w ww  .  ja v a2s  . c om
    Response response = request.send();
    if (response.getCode() != SC_OK) {
        throw new IOException(String.format("Status %s (%s) for request %s", response.getCode(),
                response.getBody(), request.getUrl()));
    }
    JsonElement userJson = JSON.newGson().fromJson(response.getBody(), JsonElement.class);
    if (log.isDebugEnabled()) {
        log.debug("User info response: {}", response.getBody());
    }
    if (userJson.isJsonObject()) {
        JsonObject jsonObject = userJson.getAsJsonObject();
        JsonElement id = jsonObject.get("uid");
        if (id == null || id.isJsonNull()) {
            throw new IOException("Response doesn't contain uid field");
        }
        JsonElement email = jsonObject.get("email");
        JsonElement name = jsonObject.get("name");
        return new OAuthUserInfo(AV_PROVIDER_PREFIX + id.getAsString(), null, email.getAsString(),
                name.getAsString(), id.getAsString());
    }

    throw new IOException(String.format("Invalid JSON '%s': not a JSON Object", userJson));
}