RemixerContentsSerializer.java

/*
 * Copyright 2016 Google Inc.
 *
 * 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.google.android.libraries.remixer.serialization;

import com.google.gson.Gson;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.lang.reflect.Type;
import java.util.Map;

class RemixerContentsSerializer
    implements JsonSerializer<SerializableRemixerContents>,
    JsonDeserializer<SerializableRemixerContents> {

  @Override
  public SerializableRemixerContents deserialize(
      JsonElement json, Type typeOfT, JsonDeserializationContext context)
      throws JsonParseException {
    Gson gson = GsonProvider.getInstance();
    SerializableRemixerContents serializableRemixerContents = new SerializableRemixerContents();
    JsonObject object = json.getAsJsonObject();
    for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
      serializableRemixerContents.addItem(gson.fromJson(entry.getValue(), StoredVariable.class));
    }
    return serializableRemixerContents;
  }

  @Override
  public JsonElement serialize(
      SerializableRemixerContents src, Type typeOfSrc, JsonSerializationContext context) {
    Gson gson = GsonProvider.getInstance();
    JsonObject object = new JsonObject();
    for (String key : src.keySet()) {
      object.add(key, gson.toJsonTree(src.getItem(key)));
    }
    return object;
  }
}