praktikum-holons/src/adapter/PositionAdapter.java

package adapter;

import java.lang.reflect.Type;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

import utility.Vector2Int;

public class PositionAdapter implements JsonSerializer<Vector2Int>, JsonDeserializer<Vector2Int> {

	@Override
	public JsonElement serialize(Vector2Int arg0, Type arg1, JsonSerializationContext arg2) {
		return new JsonPrimitive(arg0.getX() + ":" + arg0.getY());
	}

	@Override
	public Vector2Int deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2) {
		try {
			String arg = arg0.getAsString();
			int mid = arg.indexOf(':');
			int x = Integer.parseInt(arg.substring(0, mid));
			int y = Integer.parseInt(arg.substring(mid + 1, arg.length()));
			return new Vector2Int(x, y);

		} catch (NumberFormatException e) {
			System.err.println(e);
		}
		return new Vector2Int(-1, -1);
	}

}