com.pte.liquid.relay.marshaller.json.JsonMarshaller.java Source code

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Here is the source code for com.pte.liquid.relay.marshaller.json.JsonMarshaller.java

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//Copyright 2015 Paul Tegelaar

//
//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.pte.liquid.relay.marshaller.json;

import java.util.logging.Logger;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.pte.liquid.relay.Marshaller;
import com.pte.liquid.relay.exception.RelayException;
import com.pte.liquid.relay.model.Message;

/**
 *   JSON marshaller, used to translate messages to and from JSON
 *
 *
 * @author Paul Tegelaar
 *
 */
public class JsonMarshaller implements Marshaller {

    private final static Logger logger = Logger.getLogger(JsonMarshaller.class.getName());
    private Gson gson;

    public JsonMarshaller() {
        GsonBuilder gsonBuilder = new GsonBuilder();
        gsonBuilder.excludeFieldsWithoutExposeAnnotation();
        gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
        gson = gsonBuilder.create();

    }

    @Override
    public synchronized String marshal(Message message) throws RelayException {
        logger.finest("Marshalling json message...");
        return gson.toJson(message);
    }

    @Override
    public synchronized Message unmarshal(String message) throws RelayException {
        logger.finest("Unarshalling json message...");
        return gson.fromJson(message, Message.class);
    }

}