Ejemplo n.º 1
0
 /// <summary>
 /// count the rows of an exitsting item in the DB
 /// </summary>
 /// <param name="itemType">type of the item (Book, journal...)</param>
 /// <param name="item">the item to check in db</param>
 /// <returns>number of result rows (if 1 so item exist in DB)</returns>
 private int rowsCount(string itemType, AbstractItem item)
 {
     try
     {
         cmd = new SqlCommand("select 1 from " + itemType + " where isbn=@ISBN", con);
         cmd.Parameters.Add("@ISBN", item.Isbn);
         adpt = new SqlDataAdapter(cmd);
         DataSet ds = new DataSet();
         adpt.Fill(ds);
         int count = ds.Tables[0].Rows.Count;
         return(count);
     }
     catch (Exception ex)
     {
         log.LogWrite("Get number of rows by isbn error in table " + itemType);
         throw new Exception("Get number of rows by isbn error in table " + itemType);
     }
 }
        public async void ReturnItem(AbstractItem item)
        {
            try
            {
                if (!(Library.Contains(item)))
                {
                    throw new InvalidOperationException("Error: item" + item + "does not appear in Library!");
                }
                if (!item.IsBorrowed)
                {
                    throw new InvalidOperationException("Error: item" + item + "is not borrowed");
                }
                item.IsBorrowed = false;
            }

            catch (InvalidOperationException)
            {
                await new MessageDialog("Error : cannot return this item, please try another action.").ShowAsync();
            }
        }
        public async void UserReturnItem(AbstractItem item, AUser user)
        {
            try
            {
                if (!item.IsBorrowed)
                {
                    throw new InvalidOperationException("Item is already returned and in library!");
                }
                else
                {
                    user.Borrowed.Remove(item);
                    item.IsBorrowed = false;
                }
            }

            catch (InvalidOperationException)
            {
                await new MessageDialog("Item is already returned and in library!").ShowAsync();
            }
        }
        public void AddItem(AbstractItem item)
        {
            if (item is Book)
            {
                if (item.Name == "")
                {
                    MessageDialog showDialog = new MessageDialog("Did not receive input, please try again. ");
                }
                Library.Add(item);
            }

            else if (item is Journal)
            {
                if (item.Name == "")
                {
                }
                MessageDialog showDialog = new MessageDialog("Did not receive input, please try again. ");

                Library.Add(item);
            }
        }
Ejemplo n.º 5
0
 public void RentItem(AbstractItem item)
 {
     items.Add(item);
 }
Ejemplo n.º 6
0
 //ctor
 public RentItem(AbstractItem item)
 {
     _rentedItem = item;
     _dateOfRent = DateTime.Now.ToString();
 }
Ejemplo n.º 7
0
 public static void ReturnItem(AbstractItem item)
 {
     item.IsBorrowed = false;
 }
Ejemplo n.º 8
0
 public static void AddItem(AbstractItem newItem)
 {
     newItem.isbn = Guid.NewGuid();
     itemList.Add(newItem);
 }
Ejemplo n.º 9
0
 //rent and return func
 public static void removeFromRental(User user, AbstractItem item)
 {
     rental[user].Remove(item);
 }
Ejemplo n.º 10
0
 // method which add item to items and update the dictioneries
 public void AddItem(AbstractItem item)
 {
     _items.Add(item);
     dicISBN.Add(item.ISBN, item);
     UpdateDicName(item);
 }