gov.nasa.arc.geocam.talk.service.TalkJsonConverter.java Source code

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Here is the source code for gov.nasa.arc.geocam.talk.service.TalkJsonConverter.java

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// __BEGIN_LICENSE__
// Copyright (C) 2008-2010 United States Government as represented by
// the Administrator of the National Aeronautics and Space Administration.
// All Rights Reserved.
// __END_LICENSE__

package gov.nasa.arc.geocam.talk.service;

import gov.nasa.arc.geocam.talk.bean.GeoCamTalkMessage;

import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;

import com.google.gson.ExclusionStrategy;
import com.google.gson.FieldAttributes;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.reflect.TypeToken;

/**
 * The Class TalkJsonConverter.
 */
public class TalkJsonConverter implements ITalkJsonConverter {

    /* (non-Javadoc)
     * @see gov.nasa.arc.geocam.talk.service.ITalkJsonConverter#deserializeList(java.lang.String)
     */
    @Override
    public List<GeoCamTalkMessage> deserializeList(String jsonString) {
        JsonParser parser = new JsonParser();
        JsonObject root = parser.parse(jsonString).getAsJsonObject();

        String jsonMessages = root.get("ms").toString();

        GsonBuilder builder = new GsonBuilder();
        builder.setDateFormat("MM/dd/yy HH:mm:ss");
        Gson gson = builder.create();

        Type listType = new TypeToken<List<GeoCamTalkMessage>>() {
        }.getType();

        return gson.fromJson(jsonMessages, listType);
    }

    /* (non-Javadoc)
     * @see gov.nasa.arc.geocam.talk.service.ITalkJsonConverter#deserialize(java.lang.String)
     */
    @Override
    public GeoCamTalkMessage deserialize(String jsonString) {
        GsonBuilder builder = new GsonBuilder();
        builder.setDateFormat("MM/dd/yy HH:mm:ss");

        Gson gson = builder.create();
        return gson.fromJson(jsonString, GeoCamTalkMessage.class);
    }

    /* (non-Javadoc)
     * @see gov.nasa.arc.geocam.talk.service.ITalkJsonConverter#serialize(gov.nasa.arc.geocam.talk.bean.GeoCamTalkMessage)
     */
    @Override
    public String serialize(GeoCamTalkMessage message) {
        GsonBuilder builder = new GsonBuilder();
        builder.setDateFormat("MM/dd/yy HH:mm:ss");

        builder.setExclusionStrategies(new TalkMessageExclusionStrategy());
        Gson gson = builder.create();
        String ret = gson.toJson(message);
        return ret;
    }

    /**
     * The Class TalkMessageExclusionStrategy.
     */
    public class TalkMessageExclusionStrategy implements ExclusionStrategy {

        /* (non-Javadoc)
         * @see com.google.gson.ExclusionStrategy#shouldSkipField(com.google.gson.FieldAttributes)
         */
        @Override
        public boolean shouldSkipField(FieldAttributes f) {
            return (f.getName().equals("audio"));
        }

        /* (non-Javadoc)
         * @see com.google.gson.ExclusionStrategy#shouldSkipClass(java.lang.Class)
         */
        @Override
        public boolean shouldSkipClass(Class<?> arg0) {
            return false;
        }

    }

    /* (non-Javadoc)
     * @see gov.nasa.arc.geocam.talk.service.ITalkJsonConverter#createMap(java.lang.String)
     */
    @Override
    public Map<String, String> createMap(String jsonString) {
        Gson gson = new Gson();
        Type mapType = new TypeToken<Map<String, String>>() {
        }.getType();
        return gson.fromJson(jsonString, mapType);
    }
}