viewreservationservlet.java

hotel management system

/*
 * Copyright 2005-2007 Kevin A. Lee
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package net.sourceforge.hoteldj.web;

import java.io.IOException;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.hoteldj.ejb.CustomerLocal;
import net.sourceforge.hoteldj.ejb.HotelManagerFacadeLocal;
import net.sourceforge.hoteldj.ejb.HotelManagerFacadeLocalHome;
import net.sourceforge.hoteldj.ejb.ReservationLocal;

/**
 * Servlet implementation class for Servlet: ViewReservationServlet
 * 
 * @author Kevin A. Lee
 * @email [e-mail]
 * 
 */
public class ViewReservationServlet extends javax.servlet.http.HttpServlet
		implements javax.servlet.Servlet {

	private static final long serialVersionUID = -736380540785357960L;

	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public ViewReservationServlet() {
		super();
	}

	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request,
	 *      HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		viewReservation(request, response);
	}

	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request,
	 *      HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * View an existing reservation
	 * 
	 * @param request
	 * @param response
	 * @throws ServletException
	 * @throws IOException
	 */
	private void viewReservation(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Context context = null;
		ReservationLocal res = null;
		Integer resID;
		String path = "/error.jsp";

		ReservationIDHelper ridHelper = new ReservationIDHelper();

		try {
			boolean supported = true;

			context = new InitialContext();
			HotelManagerFacadeLocalHome bmHome = (HotelManagerFacadeLocalHome) context
					.lookup(HotelManagerFacadeLocalHome.JNDI_NAME);
			HotelManagerFacadeLocal bm = bmHome.create();

			// do we have a reservation ID
			if (request.getParameter("resID").equals("")) {
				// TODO: add credit card lookup
				// String lastName = request.getParameter("lastName");
				// String creditCardNum = request.getParameter("creditCardNum");
				// res = bm.getReservation(lastName, creditCardNum);
				supported = false;
			} else {
				resID = ridHelper.formattedtoId(request.getParameter("resID"));
				res = bm.getReservation(resID);
			}

			if (res == null) {
				request.setAttribute("resID", request.getParameter("resID"));
				if (supported) {
					path = "/no_such_reservation.jsp";
				} else {
					path = "/unsupported.jsp";
				}
			} else {
				CustomerLocal customer = bm.getCustomer(res.getCust_id_fk());
				request.setAttribute("resID", request.getParameter("resID"));
				request.setAttribute("resArrival", res.getArrival_date());
				request.setAttribute("resNights", res.getNum_nights());
				request.setAttribute("resGuests", res.getNum_guests());
				request.setAttribute("resCustFirst", customer.getFirstname());
				request.setAttribute("resCustLast", customer.getLastname());
				path = "/update_reservation.jsp";
			}

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}

		getServletContext().getRequestDispatcher(path).forward(request,
				response);
	}
}