com.eclipsesource.connect.serialization.GsonFactory.java Source code

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Here is the source code for com.eclipsesource.connect.serialization.GsonFactory.java

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/*******************************************************************************
 * Copyright (c) 2015 EclipseSource and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Holger Staudacher - initial API and implementation, ongoing development
 ******************************************************************************/
package com.eclipsesource.connect.serialization;

import com.eclipsesource.connect.api.serialization.Name;
import com.eclipsesource.connect.model.Id;
import com.fatboyindustrial.gsonjavatime.Converters;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

public class GsonFactory {

    static final String KEY_ID = "_id";

    public static Gson create(boolean prettyPrinting) {
        GsonBuilder builder = new GsonBuilder();
        if (prettyPrinting) {
            builder.setPrettyPrinting();
        }
        builder.registerTypeAdapter(Id.class, new IdTypeAdapter());
        Converters.registerAll(builder);
        addFieldNamingStrategy(builder);
        return builder.create();
    }

    private static void addFieldNamingStrategy(GsonBuilder builder) {
        builder.setFieldNamingStrategy(field -> {
            if (field.getType() == Id.class) {
                return KEY_ID;
            }
            if (field.isAnnotationPresent(Name.class)) {
                return field.getAnnotation(Name.class).value();
            }
            return field.getName();
        });
    }
}