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The EntitySpaces Community » EntitySpaces API » Hierarchical Data Model » Zero-To-Many Save Question

Zero-To-Many Save Question

Last post 08-15-2008, 4:41 PM by David.Parsons. 1 replies.


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08-15-2008, 8:42 AM 10761

strattonn
Joined on 02-17-2007
Canal Winchester, OH
Posts 84

Zero-To-Many Save Question

Maybe I am missing something here but some insight would be great.

I am adding records to a parent, child, grandchild ES object. The first section of code works fine directly accessing the child but this is not what I need. I need to be able to work from the scope of the parent. If I try to run the second section of code I get a SourceId cannot be null in table TRNJ_OpsDocType error. When I debug the second section thisDocII gets its SourceId and ItemId automatically populated as soon as it is created, but testII does not, all fields are null.

I have gone through the table structures to check everything and all looks well, maybe i am not understanding this hierarchial model correctly.

Code:

            //This works
            TRNJOpsDoc thisDoc = new TRNJOpsDoc();
            thisDoc.LoadByPrimaryKey(1, 378291, 28);
            TRNJOpsDocType test = thisDoc.TRNJOpsDocTypeCollectionBySourceId.AddNew();
            test.DocTypeId = "BOL";
            thisDoc.Save();

            //This does not
            TRNJOpsItem opsItem = new TRNJOpsItem();
            opsItem.LoadByPrimaryKey(1, 378291);
            TRNJOpsDoc thisDocII = opsItem.TRNJOpsDocCollectionBySourceId.AddNew();
            TRNJOpsDocType testII = thisDocII.TRNJOpsDocTypeCollectionBySourceId.AddNew();
            testII.DocTypeId = "BOL";
            opsItem.Save();

EntitySpaces Version # 2008.1.0623.0
MyGeneration Version # 1.3.0.3

Code:

CREATE TABLE [dbo].[TRNJ_OpsItem](
	[SourceId] [int] NOT NULL,
	[ItemId] [int] NOT NULL,
 CONSTRAINT [PK_TRNJ_OpsItem] PRIMARY KEY CLUSTERED 
(
	[SourceId] ASC,
	[ItemId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO
ALTER TABLE [dbo].[TRNJ_OpsItem]  WITH CHECK ADD  CONSTRAINT [FK_TRNJ_OpsItem_TRNJ_DocSource] FOREIGN KEY([SourceId])
REFERENCES [dbo].[TRNJ_DocSource] ([Id])
ON UPDATE CASCADE
GO
ALTER TABLE [dbo].[TRNJ_OpsItem] CHECK CONSTRAINT [FK_TRNJ_OpsItem_TRNJ_DocSource]

CREATE TABLE [dbo].[TRNJ_OpsDoc](
	[SourceId] [int] NOT NULL,
	[ItemId] [int] NOT NULL,
	[Id] [int] IDENTITY(1,1) NOT NULL,
	[Filename] [varchar](250) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL CONSTRAINT [DF_TRNJ_OpsDocument_Filename]  DEFAULT (''),
 CONSTRAINT [PK_TRNJ_OpsDocument] PRIMARY KEY CLUSTERED 
(
	[SourceId] ASC,
	[ItemId] ASC,
	[Id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[TRNJ_OpsDoc]  WITH CHECK ADD  CONSTRAINT [FK_TRNJ_OpsDoc_TRNJ_DocSource] FOREIGN KEY([SourceId])
REFERENCES [dbo].[TRNJ_DocSource] ([Id])
ON UPDATE CASCADE
GO
ALTER TABLE [dbo].[TRNJ_OpsDoc] CHECK CONSTRAINT [FK_TRNJ_OpsDoc_TRNJ_DocSource]
GO
ALTER TABLE [dbo].[TRNJ_OpsDoc]  WITH CHECK ADD  CONSTRAINT [FK_TRNJ_OpsDoc_TRNJ_OpsItem] FOREIGN KEY([SourceId], [ItemId])
REFERENCES [dbo].[TRNJ_OpsItem] ([SourceId], [ItemId])
GO
ALTER TABLE [dbo].[TRNJ_OpsDoc] CHECK CONSTRAINT [FK_TRNJ_OpsDoc_TRNJ_OpsItem]

CREATE TABLE [dbo].[TRNJ_OpsDocType](
	[SourceId] [int] NOT NULL,
	[ItemId] [int] NOT NULL,
	[Id] [int] NOT NULL,
	[DocTypeId] [varchar](8) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
 CONSTRAINT [PK_TRNJ_OpsDocTypes_1] PRIMARY KEY CLUSTERED 
(
	[SourceId] ASC,
	[ItemId] ASC,
	[Id] ASC,
	[DocTypeId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[TRNJ_OpsDocType]  WITH CHECK ADD  CONSTRAINT [FK_TRNJ_OpsDocType_TRNJ_DocType1] FOREIGN KEY([DocTypeId])
REFERENCES [dbo].[TRNJ_DocType] ([Id])
GO
ALTER TABLE [dbo].[TRNJ_OpsDocType] CHECK CONSTRAINT [FK_TRNJ_OpsDocType_TRNJ_DocType1]
GO
ALTER TABLE [dbo].[TRNJ_OpsDocType]  WITH CHECK ADD  CONSTRAINT [FK_TRNJ_OpsDocTypes_TRNJ_OpsDoc] FOREIGN KEY([SourceId], [ItemId], [Id])
REFERENCES [dbo].[TRNJ_OpsDoc] ([SourceId], [ItemId], [Id])
GO
ALTER TABLE [dbo].[TRNJ_OpsDocType] CHECK CONSTRAINT [FK_TRNJ_OpsDocTypes_TRNJ_OpsDoc]


Stack Trace

Code:
   at EntitySpaces.Core.esEntityCollection.SaveToProviderInsertsUpdates(esSqlAccessType sqlAccessType)
   at EntitySpaces.Core.esEntityCollection.SaveToProvider(esSqlAccessType sqlAccessType)
   at EntitySpaces.Core.esEntityCollection.Save(esSqlAccessType sqlAccessType)
   at EntitySpaces.Core.esEntityCollection.Save()
   at EntitySpaces.Core.esEntity.CommitPostSaves()
   at EntitySpaces.Core.esEntity.Save(esSqlAccessType sqlAccessType)
   at EntitySpaces.Core.esEntity.Save()
   at BusinessObjects.TRNJOpsDoc.Save() in C:\Documents and Settings\nstratton.trnj2\My Documents\Visual Studio 2008\Projects\EntitySpaces\EntitySpaces\EntitySpaces\Custom\TRNJOpsDoc.cs:line 120
   at DocApprover.ZoomImage.btnTest_Click(Object sender, RoutedEventArgs e) in C:\Documents and Settings\nstratton.trnj2\My Documents\Visual Studio 2008\Projects\DocApprover\DocApprover\ZoomImage.xaml.cs:line 918
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.Controls.Button.OnClick()
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.Run()
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at System.Windows.Application.Run()
   at DocApprover.App.Main() in C:\Documents and Settings\nstratton.trnj2\My Documents\Visual Studio 2008\Projects\DocApprover\DocApprover\obj\Debug\App.g.cs:line 0
   at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

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08-15-2008, 4:41 PM 10766 in reply to 10761

David.Parsons
Joined on 01-14-2007
Posts 1,419

Re: Zero-To-Many Save Question

It's difficult to look at a piece of the database, and understand the big picture. The most obvious point of confusion for me is that [TRNJ_OpsDoc] has an identity key, which is already unique, but it is just part of a composite PK. Fields do not have to be part of the primary key in order to participate as foreign keys.

NOTE: The changes below are all just done on paper. They are not tested within SQL Server because of some missing table definitions required in the FK constraints, i.e., [TRNJ_DocSource] and [TRNJ_DocType].

1) The first thing I would do is remove [SourceId] and [ItemId] from the PK definition of [TRNJ_OpsDoc].
2) This changes the [TRNJ_OpsDocType] FK reference to [TRNJ_OpsDoc] to simply [Id].
3) [TRNJ_OpsDocType] now seems de-normalized, with redundant [SourceId] and [ItemId] columns, so I would remove them entirely, from both the table and the PK. This essentially turns [TRNJ_OpsDocType] into a many-to-many associative table between [TRNJ_OpsDoc] and [TRNJ_DocType].

David Neal Parsons
www.entityspaces.net

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