/*
* Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* 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://aws.amazon.com/apache2.0
*
* This file 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.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper;
import com.google.gson.Gson;
/**
* Simple JSON marshaller that uses Gson mapper. It has all the limitations of
* that library, the documentation of which is available here:
* http://docs.codehaus.org/display/JACKSON/Home
*/
public class JsonMarshaller<T extends Object> implements DynamoDBMarshaller<T> {
private static Gson gson = new Gson();
@Override
public String marshall(T obj) {
return gson.toJson(obj);
}
@Override
public T unmarshall(Class<T> clazz, String json) {
try {
return gson.fromJson(json, clazz);
} catch (Exception e) {
throw new RuntimeException("Unable to unmarshall the string " + json
+ "into " + clazz, e);
}
}
}