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

public class getInfoAboutUsers extends HttpServlet {
//Initialize global variables
  DBServerInterface dbm;
  public void init(ServletConfig config) throws ServletException {
    try{
      super.init(config);
      dbm = (DBServerInterface)System.getProperties().get("MDM.DBServer");
    }
    catch(Exception ex){
      ex.printStackTrace();
    }
  }

//Process the HTTP Post request

  public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    ObjectInputStream ois = new ObjectInputStream(req.getInputStream());
    ObjectOutputStream oos = new ObjectOutputStream(res.getOutputStream());
    try{
      Object obj = ois.readObject();
      Vector v = (Vector)obj;
      BuddyTableModel btm = dbm.getInfoAboutUsers(v);
      oos.writeObject(btm);
      v = null;
      btm = null;
    }
    catch(NullPointerException ex){
        try{
          System.out.println("Recreating connection to FMServer");
          org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init();
          dbm = DBServerInterfaceHelper.bind(orb, "DBServer");
          System.getProperties().put("MDM.DBServer", dbm);
        }
        catch(Exception subEx){
          subEx.printStackTrace();
        }
    }
    catch(ClassCastException ex){
        try{
          System.out.println("Recreating connection to FMServer");
          org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init();
          dbm = DBServerInterfaceHelper.bind(orb, "DBServer");
          System.getProperties().put("MDM.DBServer", dbm);
        }
        catch(Exception subEx){
          subEx.printStackTrace();
        }
    }
    catch(Exception ex){
      ex.printStackTrace();
    }
    finally{
      ois.close();
      oos.close();
    }
  }

  public void destroy(){
    try{
      dbm = null;
    }
    catch(Exception ex){
      ex.printStackTrace();
    }    
  }
//Get Servlet information

  public String getServletInfo() {
    return "getInfoAboutUsers Information";
  }
}