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AceQL HTTP is a framework of REST like http APIs that allow to access to remote SQL databases over http from any device that supports http. AceQL HTTP is provided with three client SDK: - The AceQL C# Client SDK allows to wrap the HTTP APIs using Microsoft SQL Server like calls in their code, just like they would for a local database. - The AceQL Java Client JDBC Driver allows to wrap the HTTP APIs using JDBC calls in their code, just like they would for a local database. - The AceQL Python Client SDK allows SQL calls to be encoded with standard unmodified DB-API 2.0 syntax

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/*
 * This file is part of AceQL HTTP.
 * AceQL HTTP: SQL Over HTTP
 * Copyright (C) 2020,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.
 *
 * AceQL HTTP is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * AceQL HTTP 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 Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301  USA
 *
 * Any modifications to this file must keep this entire header
 * intact.
 */
package org.kawanfw.sql.util;

import java.util.HashMap;
import java.util.Hashtable;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TreeMap;

/**
 *
 * Utility class to build a defensive copy of a Map, backed by a Hashmap,
 * Hashtable , LinkedHashMap or TreeMap.
 *
 * @author Nicolas de Pomereu
 *
 */
public class MapCopier {

    /**
     * Copy a Map to another Map
     *
     * @param map
     *            the map to copy
     * @return the copied map
     */
    public Map copy(Map map) {
	Map mapCopy = null;

	if (map instanceof HashMap) {
	    mapCopy = new HashMap(map);
	} else if (map instanceof Hashtable) {
	    mapCopy = new Hashtable(map);
	} else if (map instanceof LinkedHashMap) {
	    mapCopy = new LinkedHashMap(map);
	} else if (map instanceof TreeMap) {
	    mapCopy = new TreeMap(map);
	} else {
	    throw new IllegalArgumentException(
		    "copy implementation not supported for Map class: "
			    + map.getClass());
	}

	/*
	 * Set keys = map.keySet();
	 *
	 * for (Iterator iterator = keys.iterator(); iterator.hasNext();) { K
	 * key = (K) iterator.next(); V value = map.get(key);
	 *
	 * mapCopy.put(key, value); }
	 */

	return mapCopy;
    }

}