public static List<Book> GetBooks(Boolean useDB)
{
try
{
DataTable dt;
List<Book> temp = new List<Book>();
// Haetaan kirjoja, db-kerroksen palauttama DataTable mapataan olioiksi. ORM Object Relational Mapping
if (useDB)
{
dt = DBBooks.GetBooks(cs);
}
else
{
dt = DBBooks.GetTestData();
}
// Tehdään ORM eli DataTablen rivi muutetaan olioiksi
Book book;
foreach (DataRow dr in dt.Rows)
{
book = new Book((int)dr[0]);
book.Author = dr["author"].ToString();
book.Name = dr["name"].ToString();
book.Country = dr["country"].ToString();
book.Year = (int)dr["year"];
// Olio lisätään kokoelmaan
temp.Add(book);
}
return temp;
}
catch (Exception)
{
throw;
}
}
public static void UpdateBook(Book book)
{
try
{
int lkm = DBBooks.UpdateBook(cs, book.Id, book.Name, book.Author, book.Country, book.Year);
}
catch (Exception ex)
{
throw ex;
}
}