import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ControllerServlet extends HttpServlet {

  public void doPost 
       (HttpServletRequest req, HttpServletResponse res)
      throws ServletException, IOException {
    
    HttpSession session = req.getSession(false);
    if (session == null) {
      res.sendRedirect("/jsp/login.jsp");
    }

    ServletContext sc = getServletContext();
    String action = req.getParameter("action");

    if (!action.equals("EDIT")) {
      String url="/jsp/editData.jsp";
    } else {
      String url="/jsp/viewData.jsp";
    }

    RequestDispatcher rd = sc.getRequestDispatcher(url);
    rd.forward(req, res);

  }
  
  public void doGet
       (HttpServletRequest req, HttpServletResponse res)
      throws ServletException, IOException {
    doPost(req, res);
  }
}