Some improvements done, owner deletion started, some bugs remain there

[RRRRHHHH_Code] / ruralHouses / src / businessLogic / OfferManager.java

diff --git a/ruralHouses/src/businessLogic/OfferManager.java b/ruralHouses/src/businessLogic/OfferManager.java
index 3c00ca5..fe9cdb1 100644 (file)
--- a/ruralHouses/src/businessLogic/OfferManager.java
+++ b/ruralHouses/src/businessLogic/OfferManager.java
@@ -1,41 +1,72 @@
 package businessLogic;
 
-import com.db4o.ObjectContainer;
-import com.db4o.ObjectSet;
+import java.rmi.RemoteException;
+import java.rmi.server.UnicastRemoteObject;
+import java.sql.Date;
+import java.util.Vector;
+
+import common.OfferInterface;
 
 import dataAccess.DB4oManager;
+import domain.Offer;
+import domain.RuralHouse;
+import exceptions.BadDates;
+import exceptions.OverlappingOfferExists;
+
+public final class OfferManager extends UnicastRemoteObject implements OfferInterface{
 
-public final class OfferManager {
+       /**
+        * 
+        */
+       private static final long serialVersionUID = 1L;
 
        private int offerNumber = 0;
        dataAccess.DB4oManager dbMngr;
-       private static OfferManager theOfferManager;
-
-       private OfferManager() {}
 
-       public static int getNumber() {
-               ObjectContainer db=DB4oManager.getContainer();
-               OfferManager o=getInstance();
-               o.offerNumber++;
-               db.store(o);
-               db.commit();
-               return o.offerNumber;
+       public OfferManager() throws RemoteException {
+               super();
+               try {
+                       this.dbMngr = DB4oManager.getInstance();
+               } catch (Exception e) {
+                       e.printStackTrace();
+               }
        }
 
+
+       
        /**
-        * This method returns the instance of the OfferManager class 
+        * This method creates an offer with a house number, first day, last day and price
         * 
-        * @return the offer manager
+        * @param House
+        *            number, start day, last day and price
+        * @return the created offer, or null, or an exception
         */
-       public static OfferManager getInstance()  {
-               ObjectContainer db=DB4oManager.getContainer();
-               OfferManager b = new OfferManager();
-               ObjectSet result = db.queryByExample(b);
-               if (!result.hasNext()){
-                       theOfferManager = new OfferManager();
-                       db.store(theOfferManager);
-                       db.commit();
-               } else theOfferManager=(OfferManager)result.next();
-               return theOfferManager;
+       public Offer createOffer(RuralHouse ruralHouse, Date firstDay, Date lastDay,
+                       float price) throws OverlappingOfferExists, BadDates, RemoteException, Exception {
+               if (firstDay.after(lastDay)||firstDay==null||lastDay==null)
+                       throw new BadDates();
+
+               boolean b = dbMngr.existsOverlappingOffer(ruralHouse,firstDay,lastDay); // The ruralHouse object in the client may not be updated
+               if (!b) {
+                       dbMngr.createOffer(ruralHouse,firstDay,lastDay,price);
+                       return ruralHouse.createOffer(offerNumber, firstDay, lastDay, price);                   
+               }
+               return null;
        }
+
+       
+       public void deleteOffer(RuralHouse rh, Offer o) throws RemoteException, Exception{
+               rh.getAllOffers().removeElement(o);
+               dbMngr.deleteOffer( o);
+       }
+
+
+
+       @Override
+       public Vector<RuralHouse> getRuralHouseOffers(RuralHouse rh)
+                       throws RemoteException {
+               // TODO Auto-generated method stub
+               return null;
+       }
+
 }