/*
 * 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.io.*;
import java.util.*;
import javax.naming.*;

public class initctx implements Command {
    
  public void execute(Context c, Vector v) {
    String jndiPropsFilename;
    // If no properties file is specified, use the default file;
    // otherwise use the specified file
    if (v.isEmpty())
      jndiPropsFilename = NamingShell.getDefaultPropsFilename();
    else
      jndiPropsFilename = (String)v.firstElement();
            
    try {
      Properties props = new Properties();
      File jndiProps = new File(jndiPropsFilename);
      props.load(new FileInputStream(jndiProps));
           
      NamingShell.setInitialContext(new InitialContext(props));
      NamingShell.setInitialName("/");
      NamingShell.setCurrentContext(NamingShell.getInitialContext());
      NamingShell.setCurrentName(NamingShell.getInitialName());
      System.out.print("Created initial context using ");
      System.out.println(jndiProps.getAbsolutePath());
    }
    catch (NamingException ne) {
      System.out.println("Couldn't create the initial context.");
      System.out.println("BASE EXCEPTION " + ne);
    }
    catch (FileNotFoundException fnfe) {
      System.out.print("Couldn't find properties file: ");
      System.out.println(jndiPropsFilename);
    }
    catch (IOException ioe) {
      System.out.print("Problem loading the properties file: ");
      System.out.println(jndiPropsFilename);
    }
    catch (Exception e) {
      System.out.println("There was a problem starting the shell.");
    }
  }
    
  public void help() { System.out.println("Usage: initctx [filename]"); }
}