aglets.java

aglet的部分源码

package com.ibm.aglet.system;

/*
 * @(#)Aglets.java
 * 
 * (c) Copyright IBM Corp. 1997, 1998
 * 
 * IBM grants you a non-exclusive, non-transferrable License to
 * use this program internally solely for the purposes of testing
 * and evaluating Java Aglet API.
 * You may not distribute, sublicense, lease, rent or use this
 * sample program externally.
 * 
 * THIS ROGRAM IS PROVIDED "AS IS" WITHOUT ANY WARRANTY EXPRESS OR
 * IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF
 * NON-INFRINGEMENT AND THE WARRANTIES OF MERCHANTIBILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE.
 * IBM WILL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY YOU AS
 * A RESULT OF USING THIS SAMPLE PROGRAM. IN NO EVENT WILL IBM BE
 * LIABLE FOR ANY SPECIAL, INDIRECT CONSEQUENTIAL DAMAGES OR LOST
 * PROFITS EVEN IF IBM HAS BEEN ADVISED OF THE POSSIBILITY OF THEIR
 * OCCURRENCE OR LOSS OF OR DAMAGE TO YOUR RECORDS OR DATA.
 * IBM WILL NOT BE LIABLE FOR ANY THIRD PARTY CLAIMS AGAINST YOU.
 */

import com.ibm.aglet.*;
import java.io.IOException;
import java.net.URL;

/**
 * Aglets class defines a set of convenient functions for a client which
 * has no AgletContext and daemon to receive incoming aglets.
 * 
 * <pre>
 * static public void main(String args[]) {
 * Aglets.init();
 * String contextAddress = "atp://server.com:4434";
 * 
 * // create from server's local path
 * AgletProxy p1 = Aglets.createAglet(contextAddress,
 * null,
 * "test.Aglet", null);
 * AgletID id = p1.getAgletID();
 * 
 * // this returns a proxy equivalent to p1.
 * AgletProxy p2 = Aglets.getAgletProxy(contextAddress, id);
 * 
 * p2.sendMessage(new Message("startTrip"));
 * }
 * </pre>
 * 
 * @version     1.10    $Date: 2001/07/28 06:34:06 $
 * @author      Mitsuru Oshima
 */
abstract public class Aglets {

	static {
		try {
			AgletRuntime.init(null);
		} catch (Throwable t) {

			// ignore
		} 
	} 

	/**
	 * Creates an aglet
	 * 
	 */
	static public AgletProxy createAglet(String contextAddress, URL codebase, 
										 String classname, 
										 Object init) throws IOException {
		return AgletRuntime.getAgletRuntime().createAglet(contextAddress, 
				codebase, classname, init);
	}
	/**
	 * Gets an enumeration of aglet proxies of all aglets residing
	 * in the context specified by contextAddress.
	 * @param contextAddress specify context URL with a string.
	 */
	static public AgletProxy[] getAgletProxies(String contextAddress) 
			throws IOException {
		return AgletRuntime.getAgletRuntime().getAgletProxies(contextAddress);
	}
	/**
	 * Obtains a proxy reference the remote aglet.
	 */
	static public AgletProxy getAgletProxy(String contextAddress, 
										   AgletID id) throws IOException {
		return AgletRuntime.getAgletRuntime().getAgletProxy(contextAddress, 
				id);
	}
}