napletcontext.java

移动Agent编程工具Naplet

/*
 * @<#>NapletContext.java version 0.0.1, 1/1/2000
 *
 * THIS PROGRAM IS FREE SOFTWARE; YOU CAN DISTRIBUTE IT AND/OR
 * MODIFY IT UNDER THE TERMS OF THE GNU GENERAL PUBLIC LICENSE
 * AS PUBLISHED BY THE FREE SOFTWARE FOUNDATION.
 *
 * THIS PROGRAM IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL,
 * BUT WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SEE THE
 * GNU GENERAL PUBLIC LICENSE FOR MORE DETAILS.
 *
 * Copyright (c) 2000 Wayne State University. All Rights Reserved.
 */
package naplet.server;

import naplet.*;
import naplet.message.*;
import naplet.resource.ServiceProxy;
import naplet.serviceChannel.*;


/**
 * The <code>NapletContext</code> class provides a collection of services that are
 * needed for the execution of an alien naplet.
 *
 * @see MailBox
 * @version 0.0.1
 * @author C. Xu
 */

public class NapletContext  {
	private URN serverURN;
	private Navigator navigator;
	private Messenger messenger;
	private ServiceProxy proxy;

	public NapletContext(URN serverURN, Navigator navigator,
			Messenger messenger, ServiceProxy proxy) {

		this.serverURN = serverURN;
		this.navigator = navigator;
		this.messenger = messenger;
		this.proxy  = proxy;
	}

	public URN getServerURN() { return serverURN; }
	public Navigator getNavigator() { return navigator; }
	public Messenger getMessenger() { return messenger; }
	// public ServiceProxy getServiceProxy() { return proxy; }

	public AppService getServiceHandler(String name)
			throws ServiceAccessException {
		return proxy.getServiceHandler( name );
	}
	public ServiceChannel getServiceChannel(String name)
			throws ServiceAccessException {
		return proxy.getServiceChannel( name );
	}
}