public bool DeleteSlozen(Trebovanje trebovanje)
{
try
{
connection.Open();
transaction = connection.BeginTransaction();
SqlCommand command = new SqlCommand();
command.Connection = connection;
command.Transaction = transaction;
foreach (var st in trebovanje.ListaStavki)
{
st.Trebovanje.TrebovanjeId = trebovanje.TrebovanjeId;
command.CommandText = $"delete from {st.Table()} {st.Where()}";
if (command.ExecuteNonQuery() == 0)
{
throw new Exception();
}
}
command.CommandText = $"delete from {trebovanje.Table()} {trebovanje.Where()}";
if (command.ExecuteNonQuery() == 0)
{
throw new Exception();
}
transaction.Commit();
return(true);
}
catch (Exception e)
{
transaction.Rollback();
Console.WriteLine(e.Message);
return(false);
}
finally
{
connection.Close();
}
}
public bool UpdateSlozen(Trebovanje objekat, List <StavkaTrebovanja> stare)
{
try
{
connection.Open();
transaction = connection.BeginTransaction();
SqlCommand command = new SqlCommand();
command.Connection = connection;
command.Transaction = transaction;
foreach (var stavka in objekat.ListaStavki)
{
if (stare.SingleOrDefault((st) => st.RbrStavke == stavka.RbrStavke) is null)
{
stavka.Trebovanje.TrebovanjeId = objekat.TrebovanjeId;
command.CommandText = $"insert into {stavka.Table()} values ({stavka.Insert()})";
if (command.ExecuteNonQuery() == 0)
{
throw new Exception();
}
}
}
foreach (var staraStavka in stare)
{
if (objekat.ListaStavki.SingleOrDefault((st) => st.RbrStavke == staraStavka.RbrStavke) is null)
{
command.CommandText = $"delete from {staraStavka.Table()} {staraStavka.Where()}";
if (command.ExecuteNonQuery() == 0)
{
throw new Exception();
}
}
}
command.CommandText = $"update {objekat.Table()} set {objekat.Update()} {objekat.Where()}";
if (command.ExecuteNonQuery() == 0)
{
throw new Exception();
}
transaction.Commit();
return(true);
}
catch (Exception e)
{
transaction.Rollback();
Console.WriteLine(e.Message);
return(false);
}
finally
{
connection.Close();
}
}