/*
 *
 * Copyright (c) 1998 Scott Oaks. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and
 * without fee is hereby granted.
 *
 * This sample source code is provided for example only,
 * on an unsupported, as-is basis. 
 *
 * AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. AUTHOR SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 *
 * THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
 * CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
 * PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
 * NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
 * SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
 * SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
 * PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES").  AUTHOR
 * SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
 * HIGH RISK ACTIVITIES.
 */


import java.lang.reflect.*;

public class JavaRunnerMulti implements Runnable {
	final static int numArgs = 2;
	ClassLoader cl;
	String className;
	Object args[];

	JavaRunnerMulti(ClassLoader cl, String className, Object args[]) {
	    this.cl = cl;
	    this.className = className;
	    this.args = args;
	}

	void invokeMain(Class clazz) {
		Class argList[] = new Class[1];
		String strArray[] = new String[1];
		argList[0] = strArray.getClass();
		Method mainMethod = null;
		try {
			mainMethod = clazz.getMethod("main", argList);
		} catch (NoSuchMethodException nsme) {
			System.out.println("No main method in " + clazz.getName());
			System.exit(-1);
		}
	
		try {
			mainMethod.invoke(null, args);
		} catch (Throwable e) {
			e.printStackTrace();
			if (e instanceof InvocationTargetException)
				e = ((InvocationTargetException) e)
							.getTargetException();
			System.out.println("Procedure exited with exception " + e);
			e.printStackTrace();
		}
	}

	public void run() {
		Class target = null;
		try {
			target = cl.loadClass(className);
			invokeMain(target);
		} catch (ClassNotFoundException cnfe) {
			System.out.println("Can't load " + className);
			cnfe.printStackTrace();
		}
	}

	static Object[] getArgs(String args[]) {
		String passArgs[] = new String[args.length - numArgs];
		for (int i = numArgs; i < args.length; i++)
			passArgs[i - numArgs] = args[i];

		Object wrapArgs[] = new Object[1];
		wrapArgs[0] = passArgs;
		return wrapArgs;
	}

	public static void main(String args[]) {
		Class self = JavaRunnerMulti.class;
		MultiLoader jrl = new MultiLoader(args[0], self.getClassLoader());
		ThreadGroup tg = new ThreadGroup("JavaRunner Threadgroup");
		Thread t = new Thread(tg,
				new JavaRunnerMulti(jrl, args[1], getArgs(args)));
		t.start();
		try {
			t.join();
		} catch (InterruptedException ie) {
			System.out.println("Thread was interrupted");
		}
	}
}