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package oracle.toplink.essentials.internal.helper;

import java.lang.Class;
import java.lang.ClassNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectStreamClass;
import java.io.ObjectInputStream;
import oracle.toplink.essentials.sessions.Session;
import oracle.toplink.essentials.internal.helper.ConversionManager;

/**
 * INTERNAL:
 * Defines a custom ObjectInputStream that is used with SerializedObjectMappings
 * to ensure the correct class loader is used.
 * BUG# 2813583
 *
 * @auther Guy Pelletier
 * @version 1.0 March 25/03
 */
public class CustomObjectInputStream extends ObjectInputStream {
    Session m_session;

    public CustomObjectInputStream(InputStream stream, Session session) throws IOException {
        super(stream);
        m_session = session;
    }

    public Class resolveClass(ObjectStreamClass classDesc) throws ClassNotFoundException, IOException {
        ConversionManager cm = m_session.getDatasourceLogin().getDatasourcePlatform().getConversionManager();
        return (Class)cm.convertObject(classDesc.getName(), Class.class);
    }
}