protected void DoDelete(ref Inventory item)
{
// If we're not dirty then don't update the database.
if (!item.IsDirty) return;
// If we're new then don't call delete.
if (item.IsNew) return;
var criteria = new InventoryCriteria{ItemId = item.ItemId};
DoDelete(criteria);
MarkNew(item);
}
private void DoUpdate(ref Inventory item, bool stopProccessingChildren)
{
bool cancel = false;
OnUpdating(ref cancel);
if (cancel) return;
// Don't update if the item isn't dirty.
if (item.IsDirty)
{
if(item.OriginalItemId != item.ItemId)
{
// Insert new child.
var temp = (Inventory)Activator.CreateInstance(typeof(Inventory), true);
temp.ItemId = item.ItemId;
temp.Qty = item.Qty;
temp = temp.Save();
// Mark child lists as dirty. This code may need to be updated to one-to-one relationships.
// Update Children
// Delete the old.
var criteria = new InventoryCriteria {ItemId = item.OriginalItemId};
Delete(criteria);
// Mark the original as the new one.
item.OriginalItemId = item.ItemId;
MarkOld(item);
CheckRules(item);
OnUpdated();
return;
}
const string commandText = "UPDATE [dbo].[Inventory] SET [ItemId] = @p_ItemId, [Qty] = @p_Qty WHERE [ItemId] = @p_ItemId; SELECT [ItemId] FROM [dbo].[Inventory] WHERE [ItemId] = @p_OriginalItemId";
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_OriginalItemId", item.OriginalItemId);
command.Parameters.AddWithValue("@p_ItemId", item.ItemId);
command.Parameters.AddWithValue("@p_Qty", item.Qty);
//result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed.
int result = command.ExecuteNonQuery();
if (result == 0)
throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");
}
}
}
item.OriginalItemId = item.ItemId;
MarkOld(item);
CheckRules(item);
if(!stopProccessingChildren)
{
// Update Child Items.
}
OnUpdated();
}
public Inventory Update(Inventory item)
{
return Update(item, false);
}
public Inventory Update(Inventory item, bool stopProccessingChildren)
{
if(item.IsDeleted)
{
DoDelete(ref item);
MarkNew(item);
}
else if(item.IsNew)
{
DoInsert(ref item, stopProccessingChildren);
}
else
{
DoUpdate(ref item, stopProccessingChildren);
}
return item;
}
private void DoInsert(ref Inventory item, bool stopProccessingChildren)
{
// Don't update if the item isn't dirty.
if (!item.IsDirty) return;
bool cancel = false;
OnInserting(ref cancel);
if (cancel) return;
const string commandText = "INSERT INTO [dbo].[Inventory] ([ItemId], [Qty]) VALUES (@p_ItemId, @p_Qty)";
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_ItemId", item.ItemId);
command.Parameters.AddWithValue("@p_Qty", item.Qty);
using(var reader = new SafeDataReader(command.ExecuteReader()))
{
if(reader.Read())
{
}
}
}
}
item.OriginalItemId = item.ItemId;
MarkOld(item);
CheckRules(item);
if(!stopProccessingChildren)
{
// Update Child Items.
}
OnInserted();
}
