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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 org.awakefw.file.api.util.AwakeDebug;
import org.json.simple.JSONArray;
import org.json.simple.JSONValue;

/**
 * @author Nicolas de Pomereu
 * 
 *         Class to transport Object arrays between PC and Host with JSON
 */
public class ObjectArrayTransport {

    /** Debug flag */
    private static boolean DEBUG = AwakeDebug.isSet(ObjectArrayTransport.class);

    /**
     * 
     */
    protected ObjectArrayTransport() {
    }

    /**
     * Format for JSON String a string array
     * 
     * @param StringArray
     *            a string array
     * 
     * @return the formated JSON string ready for transport
     */

    @SuppressWarnings("unchecked")
    public static String toJson(Object[] objectArray) {
	
	JSONArray jsonArray = new JSONArray();
	
	for (int i = 0; i < objectArray.length; i++) {
	    jsonArray.add(objectArray[i]);
	}
	
	String jsonString = jsonArray.toJSONString();
	debug("jsonString: " + jsonString);
	return jsonString;
    }

    /**
     * Transform a Json string to an array of Objects
     * 
     * @param jsonString
     *            the json formatted string
     * @return the corresponding decoded array of Objects
     */
    public static Object[] fromJson(String jsonString) {
	// Gson gson = new Gson();
	// String[] types = gson.fromJson(jsonString, String[].class);
	// return types;

	debug("in public static Object[] fromJson(String jsonString)");

	Object obj = JSONValue.parse(jsonString);
	JSONArray jsonArray = (JSONArray) obj;

	Object objectArray[] = new Object[jsonArray.size()];

	for (int i = 0; i < jsonArray.size(); i++) {
	    objectArray[i] = jsonArray.get(i);
	}
	
	// free objects
	obj = null;
	jsonArray = null;

	return objectArray;

    }

    /**
     * Debug
     * 
     * @param s
     */
    public static void debug(String s) {
	if (DEBUG) {
	    System.out.println(s);
	}
    }
}