/*
 * This example is from the book "Java Enterprise in a Nutshell".
 * Copyright (c) 1999 by O'Reilly & Associates.  
 * You may distribute this source code for non-commercial purposes only.
 * You may study, modify, and use this example for any purpose, as long as
 * this notice is retained.  Note that this example is provided "as is",
 * WITHOUT WARRANTY of any kind either expressed or implied.
 */

import java.util.Vector;

import javax.naming.Context;
import javax.naming.NamingException;

class rebind implements Command {
    
    public void execute(Context c, Vector v) 
        throws CommandException {
            
        // check to see if we have all the args we need to rebind
        if (v.isEmpty())
            throw new CommandException(new Exception(), "No names specified");
        else if (v.elementAt(1) == null)
            throw new CommandException(new Exception(), 
                "Only one name specified");
                
        String name = (String)v.firstElement();
        String objName = (String)v.elementAt(1);

        try {
            Object target = c.lookup(objName);
            c.rebind(name, target);
            System.out.println("Rebound the object " 
                + objName + " to the name " + name);
        }
        catch (NamingException ne) {
            throw new CommandException(ne, 
                "Couldn't rebind " + objName + " to the name " + name);
        }
    }

    public void help() { System.out.println("Usage: rebind [name] [obj]"); }
}