public bool AddQuantity(long bookTypeId, int quantity)
{
BookType bookType = BooksInformationDao.GetBookTypeById(bookTypeId);
if (bookType == null)
{
return(false);
}
else
{
bookType.QuantityMap.Quantity += quantity;
StorehouseManagementDao.UpdateQuantity(bookType);
return(true);
}
}
public IList <Category> GetAllCategories()
{
return(BooksInformationDao.GetAllCategories());
}
public BookType GetBookTypeById(long bookTypeId)
{
return(BooksInformationDao.GetBookTypeById(bookTypeId));
}
public IEnumerable <BookType> GetAllBooks()
{
bookTypeCache = BooksInformationDao.GetAllBooks();
return(bookTypeCache);
}
public IEnumerable <BookType> GetBooksByCategoryId(long categoryId)
{
return(BooksInformationDao.GetBooksByCategoryId(categoryId));
}
