MarshallTool.java

package org.objectweb.jonas_ejb.lib;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.io.Serializable;

public class MarshallTool {

    public static synchronized byte[] toBytes(Serializable o)
            throws IOException {

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

        oos.writeObject(o);
        oos.close();

        return bas.toByteArray();
    }

    public static synchronized Serializable fromBytes(byte[] bytes)
            throws IOException, ClassNotFoundException {

        class SpecializedOIS extends ObjectInputStream {

            SpecializedOIS(InputStream is) throws IOException {
                super(is);
            }

            protected Class resolveClass(ObjectStreamClass osc) throws IOException, ClassNotFoundException {
                try {
                    return super.resolveClass(osc);
                } catch (ClassNotFoundException e) {
                    return Thread.currentThread().getContextClassLoader().loadClass(osc.getName());
                }
            }
        }

        if (bytes == null) {
            return null;
        }

        ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
        SpecializedOIS sois = new SpecializedOIS(bis);
        return (Serializable) sois.readObject();
    }

}

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