package com.oreilly.jent.security.servlets;

/**
 * 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.
 */

import java.io.IOException;
import java.math.BigDecimal;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.oreilly.jent.security.beans.TaxService;
import com.oreilly.jent.security.beans.TaxServiceHome;

public class TaxServlet extends HttpServlet{

    protected static Logger sLogger = Logger.getLogger(TaxServlet.class.getName());

    protected void doGet(
        HttpServletRequest aHttpServletRequest,
        HttpServletResponse aHttpServletResponse
    ) throws ServletException, IOException {
        try {
            InitialContext aContext = new InitialContext();
            Object o = aContext.lookup("java:comp/env/ejb/TaxService");
            TaxServiceHome aTaxServiceHome = (TaxServiceHome) PortableRemoteObject.narrow(
                o,
                TaxServiceHome.class
            );
            TaxService aTaxService = aTaxServiceHome.create();

            aHttpServletRequest.setAttribute("tax", aTaxService.calculateTax(new BigDecimal("100.00")));
            RequestDispatcher aDispatcher = aHttpServletRequest.getRequestDispatcher(
                "/displayTax.jsp"
            );
            aDispatcher.forward(aHttpServletRequest,  aHttpServletResponse);
        } catch (Exception e) {
            String aMessage ="Exception occured in tax service servlet.do get";
            sLogger.log(Level.SEVERE, aMessage, e);
            throw new ServletException(aMessage, e);
        }
    }
}
