JsonGsonDatabind.java

package serializers.json;

import java.io.*;

import serializers.*;

import data.media.MediaContent;

/**
 * This serializer uses Google-gson for data binding.
 * to configure)
 */
public class JsonGsonDatabind
{
	public static void register(TestGroups groups)
	{
            groups.media.add(JavaBuiltIn.mediaTransformer,
                    new GenericSerializer<MediaContent>("json/gson/databind", MediaContent.class),
                    new SerFeatures(
                            SerFormat.JSON,
                            SerGraph.FLAT_TREE,
                            SerClass.ZERO_KNOWLEDGE,
                            ""
                    )
            );
	}

	// ------------------------------------------------------------
	// Serializer (just one)

	static class GenericSerializer<T> extends Serializer<T>
	{
    	        private final com.google.gson.Gson _gson = new com.google.gson.Gson();
    	        private final String name;
    	        private final Class<T> type;
    
    	        public GenericSerializer(String name, Class<T> clazz)
    	        {
    	            this.name = name;
    	            type = clazz;
    	        }
    
    	        public String getName() { return name; }
    	        
    	        public T deserialize(byte[] array) throws Exception
    	        {
                        T result = _gson.fromJson(new String(array, "UTF-8"), type);
                        return result;
    	        }
    
    	        public byte[] serialize(T data) throws IOException
    	        {
                        StringWriter w = new StringWriter();
                        _gson.toJson(data, w);
                        w.flush();
                        return w.toString().getBytes("UTF-8");
    	        }
    	}
}