Example usage for com.google.gson JsonElement getAsJsonPrimitive

Introduction

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

Prototype

public JsonPrimitive getAsJsonPrimitive()

Source Link

Document

convenience method to get this element as a JsonPrimitive .

Usage

From source file:rpc.server.data.JSONSerializer.java

License:Open Source License

private Object fromJsonElement(JsonElement jsonElement, Type expected) throws NoSuitableSerializableFactory {

    if (jsonElement == null) {
        return null;
    }/*from  ww  w .j  av a2s.  c om*/

    // Null
    if (jsonElement.isJsonNull()) {
        return null;
    }

    // Boolean
    // Integer
    // Long
    // Float
    // Double
    // String
    // Enum
    if (jsonElement.isJsonPrimitive()) {
        JsonPrimitive asJsonPrimitive = jsonElement.getAsJsonPrimitive();

        if (asJsonPrimitive.isBoolean()) {
            return asJsonPrimitive.getAsBoolean();
        }

        if (asJsonPrimitive.isNumber()) {
            if (expected.isInteger()) {
                return asJsonPrimitive.getAsInt();
            }

            if (expected.isLong()) {
                return asJsonPrimitive.getAsLong();
            }

            if (expected.isFloat()) {
                return asJsonPrimitive.getAsFloat();
            }

            if (expected.isDouble()) {
                return asJsonPrimitive.getAsDouble();
            }

            return asJsonPrimitive.getAsNumber();
        }

        if (asJsonPrimitive.isString()) {
            if (expected.isEnum()) {
                String value = asJsonPrimitive.getAsString();
                return Enum.valueOf((Class) expected.getTypeClass(), value);
            } else {
                return asJsonPrimitive.getAsString();
            }
        }
    }

    // Map
    // Serializable
    if (jsonElement.isJsonObject()) {
        JsonObject asJsonObject = jsonElement.getAsJsonObject();

        if (expected.isMap()) {
            Map<Object, Object> map = new HashMap<Object, Object>();

            Type keyType = expected.getParameterized(0);
            Type valueType = expected.getParameterized(1);

            if (!(keyType.isString() || keyType.isEnum())) {
                return null;
            }

            for (Map.Entry<String, JsonElement> entry : asJsonObject.entrySet()) {

                String key = entry.getKey();
                JsonElement value = entry.getValue();

                if (keyType.isString()) {
                    map.put(entry.getKey(), fromJsonElement(value, valueType));
                }

                if (keyType.isEnum()) {
                    map.put(Enum.valueOf((Class) keyType.getTypeClass(), key),
                            fromJsonElement(value, valueType));
                }
            }

            return map;
        } else {
            if (provider == null) {
                throw new NoSuitableSerializableFactory();
            }

            Serializable object = provider.make(expected);

            for (Map.Entry<String, Type> entry : object.fields().entrySet()) {

                String field = entry.getKey();
                Type fieldType = entry.getValue();

                JsonElement value = asJsonObject.get(field);
                object.set(field, fromJsonElement(value, fieldType));
            }

            return object;
        }
    }

    // List
    if (jsonElement.isJsonArray()) {
        JsonArray asJsonArray = jsonElement.getAsJsonArray();

        int size = asJsonArray.size();

        List<Object> list = new ArrayList<Object>();
        Type itemType = expected.getParameterized(0);

        for (int i = 0; i < size; i++) {
            JsonElement value = asJsonArray.get(i);
            list.add(fromJsonElement(value, itemType));
        }

        return list;
    }

    return null;
}

From source file:tk.breezy64.pantex.core.ConfigManager.java

private static Object jsonElementToObject(JsonElement e) {
    if (e.isJsonObject()) {
        return jsonObjectToMap(e.getAsJsonObject());
    } else if (e.isJsonPrimitive()) {
        JsonPrimitive p = e.getAsJsonPrimitive();
        if (p.isNumber()) {
            return p.getAsInt();
        } else if (p.isString()) {
            return p.getAsString();
        } else if (p.isBoolean()) {
            return p.getAsBoolean();
        }//from  w ww  . j  ava  2 s  . c  o  m
    } else if (e.isJsonArray()) {
        List<Object> list = new ArrayList<>();
        e.getAsJsonArray().forEach((x) -> list.add(jsonElementToObject(x)));
        return list;
    }
    return null;
}

From source file:vazkii.botania.client.model.SpecialFlowerModel.java

License:Open Source License

private ModelResourceLocation getLocation(String json) {
    JsonElement e = new JsonParser().parse(json);
    if (e.isJsonPrimitive() && e.getAsJsonPrimitive().isString()) {
        return new ModelResourceLocation(e.getAsString());
    }// w ww  . j  a  va2  s .c om
    Botania.LOGGER.error("Expect ModelResourceLocation, got: ", json);
    return new ModelResourceLocation("builtin/missing", "missing");
}