Message.java

package websocket.message;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import frontend.AbstractJsonMessage;
import game.Player;
import model.Bonus.Bonus;
import model.Snake.Snake;
import model.Snake.SnakePartArc;
import model.Snake.SnakePartLine;
import websocket.message.serializer.*;

/**
 * nickolay, 17.03.15.
 */
public abstract class Message extends AbstractJsonMessage {
    Message(){
        gson = new GsonBuilder()
                .registerTypeAdapter(ControlMessage.class, new ControlMessageSerializer())
                .registerTypeAdapter(SnakePartArc.class, new SnakePartArcSerializer())
                .registerTypeAdapter(SnakePartLine.class, new SnakePartLineSerializer())
                .registerTypeAdapter(SnakeUpdateMessage.class, new SnakeUpdateMessageSerializer())
                .registerTypeAdapter(GameOverMessage.class, new GameOverMessageSerializer())
                .registerTypeAdapter(RoomPlayersMessage.class, new RoomPlayersMessageSerializer())
                .registerTypeAdapter(ConnectedPlayerMessage.class, new ConnectedPlayerMessageSerializer())
                .registerTypeAdapter(DisconnectedPlayerMessage.class, new DisconnectedPlayerMesageSerializer())
                .registerTypeAdapter(ReadyMessage.class, new ReadyMessageSerializer())
                .registerTypeAdapter(StartGameMessage.class, new StartGameMessageSerializer())
                .registerTypeAdapter(Player.class, new PlayerSerializer())
                .registerTypeAdapter(NewBonusMessage.class, new NewBonusMessageSerializer())
                .registerTypeAdapter(EatBonusMessage.class, new EatBonusMessageSerializer())
                .registerTypeAdapter(Bonus.class, new BonusSerializer())
                .registerTypeAdapter(SnakePatchMessage.class, new SnakePatchMessageSerializer())
                .registerTypeAdapter(Snake.class, new SnakeUpdatesSerializer())
                .registerTypeAdapter(StartRoundMessage.class, new StartRoundMessageSerializer())
                .registerTypeAdapter(RatingUpdateMessage.class, new RatingUpdateMessageSerializer())
                .registerTypeAdapter(ConnectedToRoomMessage.class, new ConnectedToRoomMesageSerializer())
                .serializeNulls()
                .create();
    }
    private String body;

    @Override
    public String getBody() {
        if (body == null) body = gson.toJson(this);
        return body;

    }
}