com.kotcrab.vis.editor.serializer.json.ObjectMapJsonSerializer.java Source code

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Here is the source code for com.kotcrab.vis.editor.serializer.json.ObjectMapJsonSerializer.java

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/*
 * Copyright 2014-2016 See AUTHORS file.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.kotcrab.vis.editor.serializer.json;

import com.badlogic.gdx.utils.ObjectMap;
import com.google.gson.*;

import java.lang.reflect.Type;

/** @author Kotcrab */
public class ObjectMapJsonSerializer<K, V>
        implements JsonSerializer<ObjectMap<K, V>>, JsonDeserializer<ObjectMap<K, V>> {
    private static final String PROPERTY_CLASS_KEY = "@class-key";
    private static final String PROPERTY_CLASS_VALUE = "@class-value";

    @Override
    public JsonElement serialize(ObjectMap<K, V> objMap, Type typeOfSrc, JsonSerializationContext context) {
        JsonArray jsonArray = new JsonArray();
        for (ObjectMap.Entry<K, V> entry : objMap.entries()) {
            JsonObject jsonObject = new JsonObject();
            jsonObject.add("key", context.serialize(entry.key, entry.key.getClass()));
            jsonObject.add("value", context.serialize(entry.value, entry.value.getClass()));
            GsonUtils.appendClassProperty(jsonObject, entry.key, context, PROPERTY_CLASS_KEY);
            GsonUtils.appendClassProperty(jsonObject, entry.value, context, PROPERTY_CLASS_VALUE);

            jsonArray.add(jsonObject);
        }

        return jsonArray;
    }

    @Override
    public ObjectMap<K, V> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        JsonArray jsonArray = json.getAsJsonArray();

        ObjectMap<K, V> objMap = new ObjectMap<>(jsonArray.size());

        for (JsonElement element : jsonArray) {
            JsonObject object = element.getAsJsonObject();

            K key = context.deserialize(object.get("key"),
                    GsonUtils.readClassProperty(object, context, PROPERTY_CLASS_KEY));
            V value = context.deserialize(object.get("value"),
                    GsonUtils.readClassProperty(object, context, PROPERTY_CLASS_VALUE));
            objMap.put(key, value);
        }

        return objMap;
    }
}