admin.CancelFlightHandler.java Source code

Introduction

Here is the source code for admin.CancelFlightHandler.java

Source

/*
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 * and open the template in the editor.
 */
package admin;

import daolayer.HibernateDAOLayer;
import entity.CustomerDetails;
import entity.FlightFareMap;
import entity.FlightMaster;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import org.hibernate.Transaction;

public class CancelFlightHandler extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String flightId = request.getParameter("flightId");
        String message = null;
        try {
            FlightMaster flight;
            Session session = HibernateDAOLayer.getSession();
            flight = (FlightMaster) session.get(FlightMaster.class, Integer.parseInt(flightId));

            Transaction transaction = session.beginTransaction();
            for (FlightFareMap ffm : flight.getFare()) {
                session.delete(ffm);
            }
            for (CustomerDetails cd : flight.getCustomers()) {
                session.delete(cd);
            }
            session.delete(flight);
            transaction.commit();
            message = "Flight Number " + flightId + " Cancelled Successfully !!!";
        } catch (Exception e) {
            message = "Error : " + e.getMessage();
            request.setAttribute("emessage", message);
            e.printStackTrace();
        } finally {
            request.setAttribute("message", message);
            RequestDispatcher dispatcher = request.getRequestDispatcher("cancelflight.jsp");
            dispatcher.forward(request, response);

        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}