/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.openide.execution;
import java.beans.*;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.IOException;

import org.openide.*;
import org.openide.util.Lookup;

/** Patch for backward compatibility of executors and debugger types.
*
* @author Jaroslav Tulach
*/
final class ExecutorType extends Object {
    static final class Handle extends Object implements java.io.Serializable {
        /** generated Serialized Version UID */
        static final long serialVersionUID = 7233109534462148872L;

        /** name executor */
        private String name;
        /** name of class of the executor */
        private String className;

        /** Old compatibility version.
        */
        private void readObject (ObjectInputStream ois) throws IOException, ClassNotFoundException {
            name = (String)ois.readObject ();
            className = (String)ois.readObject ();
        }

        /** Has also save the object.
        */
        private void writeObject (ObjectOutputStream oos) throws IOException {
            oos.writeObject (name);
            oos.writeObject (className);
        }

        /** Convert to the new class.
        */
        private Object readResolve () {
            ServiceType exc = null;

            // try to find the executor by name
            ServiceType.Registry r = (ServiceType.Registry)Lookup.getDefault().lookup(ServiceType.Registry.class);
            exc = r.find (name);
            if (exc == null) {
                // try to find it by class
                try {
                    exc = r.find (
                              Class.forName (className, true, (ClassLoader)Lookup.getDefault().lookup(ClassLoader.class))
                          );
                } catch (ClassNotFoundException ex) {
                }
            }
            return exc == null ? null : new org.openide.ServiceType.Handle (exc);
        }
    }
}