public BookDTO Find(int bookID)
{
if (bookID == 0)
{
throw new ArgumentException("bookID");
}
Book book = _bookRepository.Find(bookID);
if (book == null)
{
return(null);
}
BookDTO recDTO = BookMapper.Map(book);
recDTO.IsAvaliable = _borrowRepository.isBookAvaliable(bookID);
return(recDTO);
}
public void Add(BorrowDTO recDTO)
{
if (_borrowRepository.isBookAvaliable(recDTO.BookID))
{
Borrow Borrow = BorrowMapper.Map(recDTO);
_borrowRepository.Add(Borrow);
}
else
{
throw new DataException("This Book is already borrowed");
}
}