xp-dev.com Git - RRRRHHHH_Code/blob - ruralHouses/src/businessLogic/__FacadeImplementation.java

   1 package businessLogic;
   2
   3 import java.rmi.RemoteException;
   4 import java.rmi.server.UnicastRemoteObject;
   5 import java.sql.Date;
   6 import java.sql.SQLException;
   7 import java.util.Vector;
   8
   9 import dataAccess.DB4oManager;
  10 import domain.Booking;
  11 import domain.Offer;
  12 import domain.Owner;
  13 import domain.RuralHouse;
  14 import exceptions.BadDates;
  15 import exceptions.DB4oManagerCreationException;
  16 import exceptions.OfferCanNotBeBooked;
  17 import exceptions.OverlappingOfferExists;
  18
  19
  20 public class __FacadeImplementation extends UnicastRemoteObject implements __ApplicationFacadeInterface {
  21
  22         /**
  23          *
  24          */
  25         private static final long serialVersionUID = 1L;
  26
  27         Vector<Owner> owners;
  28         Vector<RuralHouse> ruralHouses;
  29         DB4oManager dB4oManager;
  30
  31
  32         public __FacadeImplementation() throws RemoteException, InstantiationException,
  33                         IllegalAccessException, ClassNotFoundException, SQLException, DB4oManagerCreationException {
  34                 owners=null;
  35                 ruralHouses=null;
  36                 try{
  37                         dB4oManager=DB4oManager.getInstance();
  38                 }
  39                 catch (com.db4o.ext.DatabaseFileLockedException e) {
  40                         System.out.println("Error in FacadeImplementation: "+e.toString());
  41                         throw e;
  42                 }
  43                 catch (Exception e) {
  44                         System.out.println("Error in FacadeImplementation: "+e.toString());
  45                         throw new DB4oManagerCreationException();
  46                 }
  47         }
  48
  49
  50         /**
  51          * This method creates an offer with a house number, first day, last day and price
  52          *
  53          * @param House
  54          *            number, start day, last day and price
  55          * @return the created offer, or null, or an exception
  56          */
  57         public Offer createOffer(RuralHouse ruralHouse, Date firstDay, Date lastDay,
  58                         float price) throws OverlappingOfferExists, BadDates, RemoteException, Exception {
  59                 if (firstDay.compareTo(lastDay)>=0) throw new BadDates();
  60                 ruralHouses=null;
  61                 owners=null;
  62                 boolean b = dB4oManager.existsOverlappingOffer(ruralHouse,firstDay,lastDay); // The ruralHouse object in the client may not be updated
  63                 if (!b) return dB4oManager.createOffer(ruralHouse,firstDay,lastDay,price);
  64                 return null;
  65         }
  66
  67         /**
  68          * This method creates a book with a corresponding parameters
  69          *
  70          * @param First
  71          *            day, last day, house number and telephone
  72          * @return a book
  73          */
  74         public Booking createBooking(RuralHouse ruralHouse, Date firstDate, Date lastDate, String bookTelephoneNumber)
  75                         throws OfferCanNotBeBooked {
  76                 ruralHouses=null;
  77                 owners=null;
  78                 return dB4oManager.createBooking(ruralHouse,firstDate,lastDate,bookTelephoneNumber);
  79         }
  80
  81
  82         /**
  83          * This method existing  owners
  84          *
  85          */
  86         public Vector<Owner> getOwners() throws RemoteException,
  87                         Exception {
  88
  89                 if (owners!=null) { System.out.println("Owners obtained directly from business logic layer");
  90                                                         return owners; }
  91                 else return owners=dB4oManager.getOwners();
  92         }
  93
  94         public Vector<RuralHouse> getAllRuralHouses() throws RemoteException,
  95         Exception {
  96
  97                 if (ruralHouses!=null) { System.out.println("RuralHouses obtained directly from business logic layer");
  98                                                                  return ruralHouses; }
  99                 else return ruralHouses=dB4oManager.getAllRuralHouses();
 100
 101         }
 102
 103         public void close() throws RemoteException{
 104                 dB4oManager.close();
 105
 106         }
 107
 108         }
 109