D-Net

package eu.dnetlib.pace.model;

import java.lang.reflect.Type;

import com.google.gson.Gson;

import com.google.gson.GsonBuilder;

import com.google.gson.InstanceCreator;

import com.google.gson.JsonDeserializationContext;

import com.google.gson.JsonDeserializer;

import com.google.gson.JsonElement;

import com.google.gson.JsonParseException;

/**

 * The Class MapDocumentSerializer.

 */

public class MapDocumentSerializer implements InstanceCreator<MapDocument> {

	@Override

	public MapDocument createInstance(final Type type) {

		return new MapDocument();

	}

	/**

	 * Decode.

	 *

	 * @param bytes

	 *            the bytes

	 * @return the map document

	 */

	public static MapDocument decode(final byte[] bytes) {

		GsonBuilder gson = new GsonBuilder();

		gson.registerTypeAdapter(Field.class, new JsonDeserializer<Field>() {

			@Override

			public Field deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) throws JsonParseException {

				FieldListImpl fl = new FieldListImpl();

				if (json.isJsonObject()) {

					String name = json.getAsJsonObject().get("name").getAsString();

					String type = json.getAsJsonObject().get("type").getAsString();

					String value = json.getAsJsonObject().get("value").getAsString();

					fl.add(new FieldValueImpl(eu.dnetlib.pace.config.Type.valueOf(type), name, value));

				}

				return fl;

			}

		});

		return gson.create().fromJson(new String(bytes), MapDocument.class);

	}

	/**

	 * To string.

	 *

	 * @param doc

	 *            the doc

	 * @return the string

	 */

	public static String toString(final MapDocument doc) {

		return new Gson().toJson(doc);

	}

	/**

	 * To byte array.

	 *

	 * @param doc

	 *            the doc

	 * @return the byte[]

	 */

	public static byte[] toByteArray(final MapDocument doc) {

		return toString(doc).getBytes();

	}

}