/* 
 * @(#)DrinkFactory.java	1.5 99/09/24
 * 
 * Copyright 1997, 1998, 1999 Sun Microsystems, Inc. All Rights
 * Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free,
 * license to use, modify and redistribute this software in source and
 * binary code form, provided that i) this copyright notice and license
 * appear on all copies of the software; and ii) Licensee does not 
 * utilize the software in a manner which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE 
 * HEREBY EXCLUDED.  SUN AND ITS LICENSORS SHALL NOT BE LIABLE 
 * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, 
 * MODIFYING OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN 
 * NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST 
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER 
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT 
 * OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS 
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 * 
 * This software is not designed or intended for use in on-line
 * control of aircraft, air traffic, aircraft navigation or aircraft
 * communications; or in the design, construction, operation or
 * maintenance of any nuclear facility. Licensee represents and warrants
 * that it will not use or redistribute the Software for such purposes.  
 */

import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.spi.DirObjectFactory;
import java.util.Hashtable;

/**
 * This is an object factory that when given a DirContext that
 * has the objectclass=drink attribute,
 * will create an instance of the corresponding Drink.
 */
public class DrinkFactory implements DirObjectFactory {
    public DrinkFactory() {
    }

    public Object getObjectInstance(Object obj, Name name, Context ctx,
	Hashtable env, Attributes inAttrs) throws Exception {
	if (obj instanceof DirContext) {
	    try {
		Attribute dt;
		if (inAttrs != null && (dt=inAttrs.get("drinktype")) != null) {
		    String drinkType = (String)dt.get();

		    return new Drink(drinkType);
		}
	    } catch (NamingException e) {
		// debug
		System.err.println(e);
		e.printStackTrace();
	    }
	}

	// return null to indicate other factories should be tried
	return null;
    }

    public Object getObjectInstance(Object obj, Name name, Context ctx,
	Hashtable env) throws Exception {
	    return getObjectInstance(obj, name, ctx, env, null);
    }
}