com.fiftycuatro.providers.GsonProvider.java Source code

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Here is the source code for com.fiftycuatro.providers.GsonProvider.java

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/**
 * 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.fiftycuatro.providers;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Provider;

import net.derquinse.common.jaxrs.gson.GenericGsonProvider;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.TypeAdapterFactory;

/**
 * Gson-based JSON JAX-RS Provider.
 * 
 * We need this not only for using Gson instead of Jackson, but also to be able
 * to register {@link TypeAdapterFactory} instances.
 */
@Provider
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public class GsonProvider extends GenericGsonProvider<Object> {

    public GsonProvider() {
        super(registerGsonTypeAdapterFactories());
    }

    /**
     * Hereby one will register every subtypes to be supported by Gson.
     */
    private static final Gson registerGsonTypeAdapterFactories() {
        GsonBuilder builder = new GsonBuilder();

        // handle double NaN
        builder.serializeSpecialFloatingPointValues();

        // register subtypes
        // builder.registerTypeAdapterFactory(RuntimeTypeAdapterFactory
        // .of(Object.class).registerSubtype(SubObjecOne.class)
        // .registerSubtype(SubObjecTwo.class)
        // .registerSubtype(SubObjecThree.class));

        return builder.create();
    }

}