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/**
 * COOS - Connected Objects Operating System (www.connectedobjects.org).
 *
 * Copyright (C) 2009 Telenor ASA and Tellu AS. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This library 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 program.  If not, see .
 *
 * You may also contact one of the following for additional information:
 * Telenor ASA, Snaroyveien 30, N-1331 Fornebu, Norway (www.telenor.no)
 * Tellu AS, Hagalokkveien 13, N-1383 Asker, Norway (www.tellu.no)
 */
package org.coos.messaging.serializer;

import java.io.*;

import org.coos.messaging.Serializer;
import org.coos.messaging.util.Log;
import org.coos.messaging.util.LogFactory;

import org.coos.util.serialize.AFClassLoader;


/**
 * Serialization by java serialization
 *  
 * @author Knut Eilif Husa, Tellu AS
 */
public class ObjectJavaSerializer implements Serializer {
    private static Log LOGGER = LogFactory.getLog(ObjectJavaSerializer.class);

    public byte[] serialize(Object object) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = null;

        try {
            oos = new ObjectOutputStream(baos);
            oos.writeObject(object);
        } catch (IOException e) {
            LOGGER.error("Failed to serialize " + object, e);
        }

        return baos.toByteArray();
    }

    public Object deserialize(byte[] bytes) throws ClassNotFoundException {
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

        try {
            ObjectInputStream ois = new ObjectInputStream(bais);

            return ois.readObject();
        } catch (IOException e) {
            LOGGER.error("Failed to deserialize", e);
        }

        return null;
    }

    public Object deserialize(byte[] bytes, final AFClassLoader cl) throws ClassNotFoundException {
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

        try {
            ObjectInputStream ois = new ObjectInputStream(bais) {

                    @Override protected Class resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {

                        if (cl != null) {
                            return cl.loadClass(desc.getName());
                        } else {
                            return super.resolveClass(desc);
                        }
                    }

                };

            Object o = ois.readObject();

            return o;

        } catch (IOException e) {
            LOGGER.error("Failed to deserialize", e);
        }

        return null;
    }
}