org.commonjava.web.json.ser.ListingAdapter.java Source code

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Here is the source code for org.commonjava.web.json.ser.ListingAdapter.java

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/*******************************************************************************
 * Copyright (c) 2014 Red Hat, Inc..
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Red Hat, Inc. - initial API and implementation
 ******************************************************************************/
package org.commonjava.web.json.ser;

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

import org.commonjava.web.json.model.Listing;

import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

public class ListingAdapter implements WebSerializationAdapter, JsonSerializer<Listing<?>> {

    @Override
    public void register(final GsonBuilder gsonBuilder) {
        gsonBuilder.registerTypeAdapter(Listing.class, this);
    }

    @Override
    public JsonElement serialize(final Listing<?> src, final Type typeOfSrc,
            final JsonSerializationContext context) {
        final JsonObject result = new JsonObject();

        final JsonArray array = new JsonArray();
        result.add("items", array);

        final List<?> items = src.getItems();
        for (final Object item : items) {
            final JsonElement element = context.serialize(item);
            array.add(element);
        }

        return result;
    }

}