asia.stampy.common.serialization.SerializationUtils.java Source code

Introduction

Here is the source code for asia.stampy.common.serialization.SerializationUtils.java

Source

/*
 * Copyright (C) 2013 Burton Alexander
 * 
 * This program 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 2 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * 
 */
package asia.stampy.common.serialization;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

import org.apache.commons.codec.binary.Base64;

import asia.stampy.common.StampyLibrary;

/**
 * Convenience class to encapsulate the serialize/deserialize functionality.
 */
@StampyLibrary(libraryName = "stampy-core")
public class SerializationUtils {

    private static Lock SERIALIZE_LOCK = new ReentrantLock(true);
    private static Lock DESERIALIZE_LOCK = new ReentrantLock(true);

    /**
     * Serialize base64.
     * 
     * @param o
     *          the o
     * @return the string
     * @throws IOException
     *           Signals that an I/O exception has occurred.
     */
    public static String serializeBase64(Object o) throws IOException {
        SERIALIZE_LOCK.lock();
        try {
            if (o instanceof byte[])
                return Base64.encodeBase64String((byte[]) o);

            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);

            oos.writeObject(o);

            return Base64.encodeBase64String(baos.toByteArray());
        } finally {
            SERIALIZE_LOCK.unlock();
        }
    }

    /**
     * Deserialize base64.
     * 
     * @param s
     *          the s
     * @return the object
     * @throws IOException
     *           Signals that an I/O exception has occurred.
     * @throws ClassNotFoundException
     *           the class not found exception
     */
    public static Object deserializeBase64(String s) throws IOException, ClassNotFoundException {
        DESERIALIZE_LOCK.lock();
        try {
            byte[] bytes = Base64.decodeBase64(s);

            ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes));

            return ois.readObject();
        } finally {
            DESERIALIZE_LOCK.unlock();
        }
    }

}