/// <summary>
/// Update an existing row in the datasource.
/// </summary>
/// <param name="transactionManager"><see cref="TransactionManager"/> object</param>
/// <param name="entity">PetShop.Business.LineItem object to update.</param>
/// <remarks>
/// After updating the datasource, the PetShop.Business.LineItem object will be updated
/// to refelect any changes made by the datasource. (ie: identity or computed columns)
/// </remarks>
/// <returns>Returns true if operation is successful.</returns>
/// <exception cref="System.Exception">The command could not be executed.</exception>
/// <exception cref="System.Data.DataException">The <paramref name="transactionManager"/> is not open.</exception>
/// <exception cref="System.Data.Common.DbException">The command could not be executed.</exception>
public override bool Update(TransactionManager transactionManager, PetShop.Business.LineItem entity)
{
SqlDatabase database = new SqlDatabase(this._connectionString);
DbCommand commandWrapper = StoredProcedureProvider.GetCommandWrapper(database, "dbo.LineItem_Update", _useStoredProcedure);
database.AddInParameter(commandWrapper, "@OrderId", DbType.Int32, entity.OrderId);
database.AddInParameter(commandWrapper, "@OriginalOrderId", DbType.Int32, entity.OriginalOrderId);
database.AddInParameter(commandWrapper, "@LineNum", DbType.Int32, entity.LineNum);
database.AddInParameter(commandWrapper, "@OriginalLineNum", DbType.Int32, entity.OriginalLineNum);
database.AddInParameter(commandWrapper, "@ItemId", DbType.AnsiString, entity.ItemId);
database.AddInParameter(commandWrapper, "@Quantity", DbType.Int32, entity.Quantity);
database.AddInParameter(commandWrapper, "@UnitPrice", DbType.Decimal, entity.UnitPrice);
int results = 0;
//Provider Data Requesting Command Event
OnDataRequesting(new CommandEventArgs(commandWrapper, "Update", entity));
if (transactionManager != null)
{
results = Utility.ExecuteNonQuery(transactionManager, commandWrapper);
}
else
{
results = Utility.ExecuteNonQuery(database, commandWrapper);
}
//Stop Tracking Now that it has been updated and persisted.
if (DataRepository.Provider.EnableEntityTracking)
{
EntityManager.StopTracking(entity.EntityTrackingKey);
}
entity.OriginalOrderId = entity.OrderId;
entity.OriginalLineNum = entity.LineNum;
entity.AcceptChanges();
//Provider Data Requested Command Event
OnDataRequested(new CommandEventArgs(commandWrapper, "Update", entity));
return(Convert.ToBoolean(results));
}
/// <summary>
/// Saves the new order line items
/// </summary>
/// <param name="orderId">The order id of the item</param>
/// <param name="cartItems">The cart items</param>
public void SaveOrderLineItems(int orderId, TList<Cart> cartItems)
{
var lineItemService = new LineItemService();
var lineNum = 0;
foreach (var item in cartItems)
{
var lineItem = new LineItem
{
OrderId = orderId,
ItemId = item.ItemId,
LineNum = ++lineNum,
Quantity = item.Quantity,
UnitPrice = item.Price
};
lineItemService.Save(lineItem);
}
}
protected override void DataPortal_Update()
{
bool cancel = false;
OnUpdating(ref cancel);
if (cancel) return;
if(OriginalOrderId != OrderId || OriginalLineNum != LineNum)
{
// Insert new child.
LineItem item = new LineItem {OrderId = OrderId, LineNum = LineNum, ItemId = ItemId, Quantity = Quantity, UnitPrice = UnitPrice};
item = item.Save();
// Mark editable child lists as dirty. This code may need to be updated to one-to-one relationships.
// Create a new connection.
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
FieldManager.UpdateChildren(this, connection);
}
// Delete the old.
var criteria = new LineItemCriteria {OrderId = OriginalOrderId, LineNum = OriginalLineNum};
DataPortal_Delete(criteria);
// Mark the original as the new one.
OriginalOrderId = OrderId;
OriginalLineNum = LineNum;
OnUpdated();
return;
}
const string commandText = "UPDATE [dbo].[LineItem] SET [OrderId] = @p_OrderId, [LineNum] = @p_LineNum, [ItemId] = @p_ItemId, [Quantity] = @p_Quantity, [UnitPrice] = @p_UnitPrice WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum; SELECT [OrderId], [LineNum] FROM [dbo].[LineItem] WHERE [OrderId] = @p_OriginalOrderId AND [LineNum] = @p_OriginalLineNum";
using (var connection = new SqlConnection(ADOHelper.ConnectionString))
{
connection.Open();
using(var command = new SqlCommand(commandText, connection))
{
command.Parameters.AddWithValue("@p_OriginalOrderId", this.OriginalOrderId);
command.Parameters.AddWithValue("@p_OrderId", this.OrderId);
command.Parameters.AddWithValue("@p_OriginalLineNum", this.OriginalLineNum);
command.Parameters.AddWithValue("@p_LineNum", this.LineNum);
command.Parameters.AddWithValue("@p_ItemId", this.ItemId);
command.Parameters.AddWithValue("@p_Quantity", this.Quantity);
command.Parameters.AddWithValue("@p_UnitPrice", this.UnitPrice);
//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.");
LoadProperty(_originalOrderIdProperty, this.OrderId);
LoadProperty(_originalLineNumProperty, this.LineNum);
}
FieldManager.UpdateChildren(this, connection);
}
OnUpdated();
}
