Example #1
0
 private Object newInstance(Type type) {
   try {
     return type.newInstance();
   } catch (Exception ex) {
     try {
       // Try a private constructor.
       Constructor constructor = type.getDeclaredConstructor();
       constructor.setAccessible(true);
       return constructor.newInstance();
     } catch (SecurityException ignored) {
     } catch (NoSuchMethodException ignored) {
       if (type.isArray())
         throw new SerializationException(
             "Encountered JSON object when expected array of type: " + type.getName(), ex);
       else if (type.isMemberClass() && !type.isStatic())
         throw new SerializationException(
             "Class cannot be created (non-static member class): " + type.getName(), ex);
       else
         throw new SerializationException(
             "Class cannot be created (missing no-arg constructor): " + type.getName(), ex);
     } catch (Exception privateConstructorException) {
       ex = privateConstructorException;
     }
     throw new SerializationException(
         "Error constructing instance of class: " + type.getName(), ex);
   }
 }
Example #2
0
  /**
   * @param clazz May be null if the type is unknown.
   * @param elementType May be null if the type is unknown.
   * @return May be null.
   */
  public <T> T readValue(Class<T> clazz, Class elementType, JsonValue jsonData) {
    if (jsonData == null) return null;

    Type type = ReflectionCache.getType(clazz);
    if (jsonData.isObject()) {
      String className = typeName == null ? null : jsonData.getString(typeName, null);
      if (className != null) {
        jsonData.remove(typeName);
        try {
          type = ReflectionCache.forName(className);
        } catch (ClassNotFoundException ex) {
          type = tagToClass.get(className);
          if (type == null) throw new SerializationException(ex);
        }
      }

      Object object;
      if (type != null) {
        Serializer serializer = classToSerializer.get(type);
        if (serializer != null) return (T) serializer.read(this, jsonData, type.getClassOfType());

        object = newInstance(type);

        if (object instanceof Serializable) {
          ((Serializable) object).read(this, jsonData);
          return (T) object;
        }

        if (object instanceof HashMap) {
          HashMap result = (HashMap) object;
          for (JsonValue child = jsonData.child(); child != null; child = child.next())
            result.put(child.name(), readValue(elementType, null, child));
          return (T) result;
        }
      } else object = new OrderedMap();

      if (object instanceof ObjectMap) {
        ObjectMap result = (ObjectMap) object;
        for (JsonValue child = jsonData.child(); child != null; child = child.next())
          result.put(child.name(), readValue(elementType, null, child));
        return (T) result;
      }

      readFields(object, jsonData);
      return (T) object;
    }

    if (type != null) {
      Serializer serializer = classToSerializer.get(type);
      if (serializer != null) return (T) serializer.read(this, jsonData, type.getClassOfType());
    }

    if (jsonData.isArray()) {
      if (type == null || type.isAssignableFrom(ReflectionCache.getType(Array.class))) {
        Array newArray = new Array();
        for (JsonValue child = jsonData.child(); child != null; child = child.next())
          newArray.add(readValue(elementType, null, child));
        return (T) newArray;
      }
      if (type.isAssignableFrom(ReflectionCache.getType(ArrayList.class))) {
        ArrayList newArray = new ArrayList();
        for (JsonValue child = jsonData.child(); child != null; child = child.next())
          newArray.add(readValue(elementType, null, child));
        return (T) newArray;
      }
      if (type.isArray()) {
        Class componentType = type.getComponentType();
        if (elementType == null) elementType = componentType;
        Object newArray = ReflectionCache.newArray(componentType, jsonData.size());
        Type arrayType = ReflectionCache.getType(newArray.getClass());
        int i = 0;
        for (JsonValue child = jsonData.child(); child != null; child = child.next())
          arrayType.setArrayElement(newArray, i++, readValue(elementType, null, child));
        return (T) newArray;
      }
      throw new SerializationException(
          "Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
    }

    Class t = type == null ? null : type.getClassOfType();
    if (jsonData.isNumber()) {
      try {
        if (type == null || t == float.class || t == Float.class)
          return (T) (Float) jsonData.asFloat();
        if (t == int.class || t == Integer.class) return (T) (Integer) jsonData.asInt();
        if (t == long.class || t == Long.class) return (T) (Long) jsonData.asLong();
        if (t == double.class || t == Double.class) return (T) (Double) (double) jsonData.asFloat();
        if (t == String.class) return (T) Float.toString(jsonData.asFloat());
        if (t == short.class || t == Short.class) return (T) (Short) (short) jsonData.asInt();
        if (t == byte.class || t == Byte.class) return (T) (Byte) (byte) jsonData.asInt();
      } catch (NumberFormatException ignored) {
      }
      jsonData = new JsonValue(jsonData.asString());
    }

    if (jsonData.isBoolean()) {
      try {
        if (type == null || t == boolean.class || t == Boolean.class)
          return (T) (Boolean) jsonData.asBoolean();
      } catch (NumberFormatException ignored) {
      }
      jsonData = new JsonValue(jsonData.asString());
    }

    if (jsonData.isString()) {
      String string = jsonData.asString();
      if (type == null || t == String.class) return (T) string;
      try {
        if (t == int.class || t == Integer.class) return (T) Integer.valueOf(string);
        if (t == float.class || t == Float.class) return (T) Float.valueOf(string);
        if (t == long.class || t == Long.class) return (T) Long.valueOf(string);
        if (t == double.class || t == Double.class) return (T) Double.valueOf(string);
        if (t == short.class || t == Short.class) return (T) Short.valueOf(string);
        if (t == byte.class || t == Byte.class) return (T) Byte.valueOf(string);
      } catch (NumberFormatException ignored) {
      }
      if (t == boolean.class || t == Boolean.class) return (T) Boolean.valueOf(string);
      if (t == char.class || t == Character.class) return (T) (Character) string.charAt(0);
      if (type.isEnum()) {
        Object[] constants = type.getEnumConstants();
        for (int i = 0, n = constants.length; i < n; i++)
          if (string.equals(constants[i].toString())) return (T) constants[i];
      }
      if (t == CharSequence.class) return (T) string;
      throw new SerializationException(
          "Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
    }

    return null;
  }
Example #3
0
  /**
   * @param value May be null.
   * @param knownClass May be null if the type is unknown.
   * @param elementType May be null if the type is unknown.
   */
  public void writeValue(Object value, Class knownClass, Class elementType) {
    try {
      if (value == null) {
        writer.value(null);
        return;
      }

      Type knownType = ReflectionCache.getType(knownClass);
      Type actualType = ReflectionCache.getType(value.getClass());

      if (actualType.isPrimitive()
          || actualType.getClassOfType() == String.class
          || actualType.getClassOfType() == Integer.class
          || actualType.getClassOfType() == Boolean.class
          || actualType.getClassOfType() == Float.class
          || actualType.getClassOfType() == Long.class
          || actualType.getClassOfType() == Double.class
          || actualType.getClassOfType() == Short.class
          || actualType.getClassOfType() == Byte.class
          || actualType.getClassOfType() == Character.class) {
        writer.value(value);
        return;
      }

      if (value instanceof Serializable) {
        writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
        ((Serializable) value).write(this);
        writeObjectEnd();
        return;
      }

      Serializer serializer = classToSerializer.get(actualType);
      if (serializer != null) {
        serializer.write(this, value, knownType.getClassOfType());
        return;
      }

      if (value instanceof Array) {
        if (knownType != null && actualType != knownType)
          throw new SerializationException(
              "Serialization of an Array other than the known type is not supported.\n"
                  + "Known type: "
                  + knownType
                  + "\nActual type: "
                  + actualType);
        writeArrayStart();
        Array array = (Array) value;
        for (int i = 0, n = array.size; i < n; i++) writeValue(array.get(i), elementType, null);
        writeArrayEnd();
        return;
      }

      if (value instanceof Collection) {
        if (knownType != null && actualType != knownType)
          throw new SerializationException(
              "Serialization of a Collection other than the known type is not supported.\n"
                  + "Known type: "
                  + knownType
                  + "\nActual type: "
                  + actualType);
        writeArrayStart();
        for (Object item : (Collection) value) writeValue(item, elementType, null);
        writeArrayEnd();
        return;
      }

      if (actualType.isArray()) {
        if (elementType == null) elementType = actualType.getComponentType();
        int length = actualType.getArrayLength(value);
        writeArrayStart();
        for (int i = 0; i < length; i++)
          writeValue(actualType.getArrayElement(value, i), elementType, null);
        writeArrayEnd();
        return;
      }

      if (value instanceof OrderedMap) {
        if (knownType == null) knownType = ReflectionCache.getType(OrderedMap.class);
        writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
        OrderedMap map = (OrderedMap) value;
        for (Object key : map.orderedKeys()) {
          writer.name(convertToString(key));
          writeValue(map.get(key), elementType, null);
        }
        writeObjectEnd();
        return;
      }

      if (value instanceof ArrayMap) {
        if (knownType == null) knownType = ReflectionCache.getType(ArrayMap.class);
        writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
        ArrayMap map = (ArrayMap) value;
        for (int i = 0, n = map.size; i < n; i++) {
          writer.name(convertToString(map.keys[i]));
          writeValue(map.values[i], elementType, null);
        }
        writeObjectEnd();
        return;
      }

      if (value instanceof ObjectMap) {
        if (knownType == null) knownType = ReflectionCache.getType(OrderedMap.class);
        writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
        for (Entry entry : ((ObjectMap<?, ?>) value).entries()) {
          writer.name(convertToString(entry.key));
          writeValue(entry.value, elementType, null);
        }
        writeObjectEnd();
        return;
      }

      if (value instanceof Map) {
        if (knownType == null) knownType = ReflectionCache.getType(HashMap.class);
        writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
        for (Map.Entry entry : ((Map<?, ?>) value).entrySet()) {
          writer.name(convertToString(entry.getKey()));
          writeValue(entry.getValue(), elementType, null);
        }
        writeObjectEnd();
        return;
      }

      if (actualType.isEnum()) {
        writer.value(value);
        return;
      }

      writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
      writeFields(value);
      writeObjectEnd();
    } catch (IOException ex) {
      throw new SerializationException(ex);
    }
  }