package examples.ejb.subclass.child;

import javax.naming.*;
import javax.ejb.*;
import java.rmi.RemoteException;
import java.util.Hashtable;

/**
 * This class illustrates using an EJBean that subclasses from a
 * another bean.
 * <ul>
 * <li> It creates an instance of the Child bean
 * <li> Calls a method that's unique to the Child bean
 * <li> Calls a method of the Parent bean that is overloaded
 * <li> Calls a method of the Parent bean that is not overloaded
 * <li> Calls a method of the Child bean that calls a Parent bean
 * </ul>
 *
 * @author Copyright (c) 1998 by WebLogic, Inc. All Rights Reserved.
 * @author Copyright (c) 1998-1999 by BEA WebXpress. All Rights Reserved.
 */
public class Client {
  static String url      = "t3://localhost:7001";
  static String user     = null;
  static String password = null;

  /**
   * Runs this example from the command line. Example:
   * <p>
   * <tt>java examples.ejb.subclass.child.Client "t3://localhost:7001" scott tiger</tt>
   * <p>
   * The parameters are optional, but if any are supplied,
   * they are interpreted in this order:
   * <p>
   * @param url               URL such as "t3://localhost:7001" of Server
   * @param user              User name, default null
   * @param password          User password, default null
   */
  public static void main(String[] args) {

    System.out.println("\nBegin child.Client...\n");

    // Parse the argument list 
    if ((args == null) || (args.length == 0)) {} 
      else
    for (int i = 0; i < args.length; i++) {
      switch(i) {
        case 0:
          url = args[i];
          break;
        case 1:
          user = args[i];
          break;
        case 2:
          password = args[i];
          break;
        default:
      }
    }

    try {
      Context    ctx        = getInitialContext();
      ChildHome  childHome  = (ChildHome) ctx.lookup("child.ChildHome");

      System.out.println("Creating child...\n");
      Child child = childHome.create();

// Call a method that's unique to the Child bean
      System.out.println("Step 1 of 4: Calling Child's \"childSaysHello()\" method...\n");
      System.out.println(child.childSaysHello());

// Call a method of the Parent bean that is overloaded
      System.out.println("\nStep 2 of 4: Calling Child's \"parentSaysHello()\" method...\n");
      System.out.println(child.parentSaysHello());

// Call a method of the Parent bean that was not overloaded
      System.out.println("\nStep 3 of 4: Calling Child's \"parentMethodOnly()\" method...\n");
      System.out.println(child.parentMethodOnly());

// Call a method of the Child bean that calls a Parent bean
      System.out.println("\nStep 4 of 4: Calling Child's \"callParentBean()\" method...\n");
      System.out.println(child.callParentBean());

    }
    catch (Exception e) {
      System.out.println(":::::::::::::: Error :::::::::::::::::");
      e.printStackTrace();
    }
    System.out.println("\nEnd child.Client...\n");
  }

  /**
   * Gets an initial context.
   *
   * @return                  Context
   * @exception               java.lang.Exception if there is
   *                          an error in getting a Context
   */
  static public Context getInitialContext() throws Exception {
    Hashtable h = new Hashtable();
    h.put(Context.INITIAL_CONTEXT_FACTORY,
        "weblogic.jndi.WLInitialContextFactory");
    h.put(Context.PROVIDER_URL, url);
    if (user != null) {
      System.out.println ("user: " + user);
      h.put(Context.SECURITY_PRINCIPAL, user);
      if (password == null) 
      password = "";
      h.put(Context.SECURITY_CREDENTIALS, password);
    } 
    return new InitialContext(h);
  }
}