checkavailabilityservlet.java

hotel management system

package net.sourceforge.hoteldj.web;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

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: CheckAvailability
 * 
 */
public class CheckAvailabilityServlet extends javax.servlet.http.HttpServlet
		implements javax.servlet.Servlet {
	static final long serialVersionUID = 1L;

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

	/*
	 * (non-Java-doc)
	 * 
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request,
	 *      HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		checkAvailability(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
	}

	/**
	 * Check room availability
	 * 
	 * @param request
	 * @param response
	 * @throws ServletException
	 * @throws IOException
	 */
	private void checkAvailability(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		Context context = null;
		String path = "/error.jsp";

		try {
			Date arrivalDate = new SimpleDateFormat("yyyy-MM-dd").parse(request
					.getParameter("arrivalDate"));
			Integer numNights = new Integer(request.getParameter("numNights"));
			Integer numGuests = new Integer(request.getParameter("numGuests"));

			context = new InitialContext();
			HotelManagerFacadeLocalHome hmHome = (HotelManagerFacadeLocalHome) context
					.lookup(HotelManagerFacadeLocalHome.JNDI_NAME);
			HotelManagerFacadeLocal hm = hmHome.create();

			// check availability
			boolean available = hm.checkAvailability(numGuests, arrivalDate,
					numNights);

			if (available) {
				request.setAttribute("resArrival", arrivalDate);
				request.setAttribute("resNights", numNights);
				request.setAttribute("resGuests", numGuests);
				path = "/make_reservation.jsp";
			} else {
				path = "/no_availability.jsp";
			}

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

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