/*
 * 
 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * The contents of this file are subject to the Sun Community Source
 * License v3.0/Jini Technology Specific Attachment v 1.0 (the
 * "License"). You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 * http://wwws.sun.com/software/jini/licensing/SCSL3_JiniTSA1.html.
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Reference Code is Jini Technology Core Platform code, v2.0. The
 * Developer of the Reference Code is Sun Microsystems, Inc.
 * 
 * Contributor(s): Sun Microsystems, Inc.
 * 
 * The contents of this file comply with the Jini Technology Core
 * Platform Compatibility Kit, v2.0A.
 * 
 * Tester(s): Sun Microsystems, Inc.
 * 
 * Test Platform(s):
 * Java 2 SDK, Standard Edition, Version 1.4.2_03 for Solaris(TM)SPARC/x86
 * Java 2 SDK, Standard Edition, Version 1.4.2_03 for Linux (Intel x86)
 * Java 2 SDK, Standard Edition, Version 1.4.2_03 for Windows (Intel Platform)
 * 
 */
package com.sun.jini.outrigger;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.InvalidObjectException;

import net.jini.core.transaction.server.TransactionParticipant;
import net.jini.core.constraint.MethodConstraints;
import net.jini.core.constraint.RemoteMethodControl;
import net.jini.security.proxytrust.ProxyTrustIterator;
import net.jini.security.proxytrust.SingletonProxyTrustIterator;
import net.jini.id.Uuid;

/**
 * Subclass of <code>ParticipantProxy</code> that implements
 * <code>RemoteMethodControl</code>
 *
 * @author Sun Microsystems, Inc.
 */
final class ConstrainableParticipantProxy extends ParticipantProxy
    implements RemoteMethodControl
{
    private static final long serialVersionUID = 1L;

    /**
     * Create a new <code>ConstrainableParticipantProxy</code> for the given
     * space.
     * @param space The an inner proxy that implements 
     *              <code>TransactionParticipant</code> for the 
     *              space.
     * @param spaceUuid The universally unique ID for the
     *              space
     * @throws NullPointerException if <code>space</code> or
     *         <code>spaceUuid</code> is <code>null</code>.
     */
    ConstrainableParticipantProxy(TransactionParticipant space, Uuid spaceUuid,
				  MethodConstraints methodConstraints)
    {
	super(constrainServer(space, methodConstraints), spaceUuid);
    }

    /**
     * Returns a copy of the server proxy with the specified client
     * constraints and methods mapping.
     */
    private static TransactionParticipant constrainServer(
        TransactionParticipant participant,
	MethodConstraints methodConstraints)
    {
	return (TransactionParticipant)
            ((RemoteMethodControl)participant).setConstraints(
	        methodConstraints);
    }

    public RemoteMethodControl setConstraints(MethodConstraints constraints) {
	return new ConstrainableParticipantProxy(space, spaceUuid,
						 constraints);
    }

    public MethodConstraints getConstraints() {
	return ((RemoteMethodControl)space).getConstraints();
    }
    
    /**
     * Returns a proxy trust iterator that is used in
     * <code>ProxyTrustVerifier</code> to retrieve this object's
     * trust verifier.
     */
    private ProxyTrustIterator getProxyTrustIterator() {
	return new SingletonProxyTrustIterator(space);
    }
	
    private void readObject(ObjectInputStream s)
	throws IOException, ClassNotFoundException
    {
	s.defaultReadObject();

	/* Basic validation of space and spaceUuid, was performed by
	 * ParticipantProxy.readObject(), we just need to verify than
	 * space implements RemoteMethodControl.	
	 */

	if(!(space instanceof RemoteMethodControl) ) {
	    throw new InvalidObjectException(
	        "space does not implement RemoteMethodControl");
	}
    }
}
