package com.oreilly.jent.jndi;

/**
 * In general, you may use the code in this book in your programs and 
 * documentation. You do not need to contact us for permission unless 
 * you're reproducing a significant portion of the code. For example, 
 * writing a program that uses several chunks of code from this book does 
 * not require permission. Selling or distributing a CD-ROM of examples 
 * from O'Reilly books does require permission. Answering a question by 
 * citing this book and quoting example code does not require permission. 
 * Incorporating a significant amount of example code from this book into 
 * your product's documentation does require permission.
 * 
 * We appreciate, but do not require, attribution. An attribution usually 
 * includes the title, author, publisher, and ISBN. For example: 
 * 
 *   "Java Enterprise in a Nutshell, Third Edition, 
 *    by Jim Farley and William Crawford 
 *    with Prakash Malani, John G. Norman, and Justin Gehtland. 
 *    Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
 *  
 *  If you feel your use of code examples falls outside fair use or the 
 *  permission given above, feel free to contact us at 
 *  permissions@oreilly.com.
 */

/**
 * rebind: Command to rebind a given name in the JNDI context.
 */

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]"); }
}