CommandSynchronous.java

/* ************************************************************************* *
 *                                                                           *
 *        Copyright (c) 2004 Peter Cappello  <cappello@cs.ucsb.edu>          *
 *                                                                           *
 *    Permission is hereby granted, free of charge, to any person obtaining  *
 *  a copy of this software and associated documentation files (the          *
 *  "Software"), to deal in the Software without restriction, including      *
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 *  distribute, sublicense, and/or sell copies of the Software, and to       *
 *  permit persons to whom the Software is furnished to do so, subject to    *
 *  the following conditions:                                                *
 *                                                                           *
 *    The above copyright notice and this permission notice shall be         *
 *  included in all copies or substantial portions of the Software.          *
 *                                                                           *
 *    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        *
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 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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 * ************************************************************************* */

/**
 * A Command that is sent directly via RMI and executed synchronously: 
 * control does not proceed on client until the execute method returns. 
 *
 * This is in contrast to adding a Command to a Mail object, and having
 * a separate thread send the Mail object.
 *
 * @version 1.0
 * @author  Peter Cappello
 */

package jicosfoundation;


public interface CommandSynchronous extends java.io.Serializable
{
    /** Proxy invokes this method.
     * 1. update local state, if necessary.
     * 2. process command locally, to the extent possible.
     * 3. send command to actual Service to continue processing, if needed
     * 4. complete processing locally, if needed.
     */
    Object execute( Proxy proxy, RemoteExceptionHandler remoteExceptionHandler);
    
    Object execute( ServiceImpl myService );
}