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Awake SQL is an open source framework that allows remote and secure JDBC access through HTTP.
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/*
 * This file is part of Awake SQL. 
 * Awake SQL: Remote JDBC access over HTTP.                                    
 * Copyright (C) 2013,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.                    
 *                                                                         
 * Awake SQL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.         
 *              
 * Awake SQL is distributed in the hope that it will be useful,               
 * but WITHOUT ANY WARRANTY; without even the implied warranty of                
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU          
 * Lesser General Public License for more details.       
 *                                  
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 *
 * If you develop commercial activities using Awake SQL, you must: 
 * a) disclose and distribute all source code of your own product,
 * b) license your own product under the GNU General Public License.
 * 
 * You can be released from the requirements of the license by
 * purchasing a commercial license. Buying such a license will allow you 
 * to ship Awake SQL with your closed source products without disclosing 
 * the source code.
 *
 * For more information, please contact KawanSoft SAS at this
 * address: [email protected]
 * 
 * Any modifications to this file must keep this entire header
 * intact.
 */
package org.awakefw.sql.json;

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

import org.awakefw.file.api.util.AwakeDebug;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

/**
 * Class to use to transport Properties in Json format using Google GSON
 * 
 * @author Nicolas de Pomereu
 * 
 */
public class PropertiesTransportGson {

    /** For debug info */
    private static boolean DEBUG = AwakeDebug.isSet(PropertiesTransportGson.class);

    /**
     * Format for JSON Properties
     * 
     * @param prop
     *            the properties to transport
     * 
     * @return the formated JSON string ready for transport
     */

    public static String toJson(Properties prop) {
	if (prop == null) {
	    throw new IllegalArgumentException("prop is null!");
	}

	Gson gson = new Gson();
	Type propertiesType = new TypeToken() {
	}.getType();
	String jsonString = gson.toJson(prop, propertiesType);
	return jsonString;
    }

    /**
     * Format from JSON string Properties
     * 
     * @param jsonString
     *            formated JSON string of Properties
     * 
     * @return a list of ordered strings for the result set line
     */
    public static Properties fromJson(String jsonString) {
	if (jsonString == null) {
	    throw new IllegalArgumentException("jsonString is null!");
	}

	Gson gson = new Gson();
	Type propertiesType = new TypeToken() {
	}.getType();
	Properties prop = gson.fromJson(jsonString, propertiesType);
	return prop;
    }


    @SuppressWarnings("unused")
    private static void debug(String s) {
	if (DEBUG) {
	    // AwakeFileLogger.log(s);
	    System.out.println(s);
	}
    }

}