Package Validation Error in Custom PipelineComponent

Hi

I'm developing an PipelineComponent (ComponentType.Transform). When I try to execute this component, the following error is thrown:

Code Snippet

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Package Validation Error (Package Validation Error)

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Error at Data Flow Task [DTS.Pipeline]: Buffer Type 1 had a size of 0 bytes.

Error at Data Flow Task [DTS.Pipeline]: The buffer manager failed to create a new buffer type.

Error at Data Flow Task [DTS.Pipeline]: The Data Flow task cannot register a buffer type. The type had 50 columns and was for execution tree 0.

Error at Data Flow Task [DTS.Pipeline]: The layout failed validation.

Error at Data Flow Task: There were errors during task validation.

(Microsoft.DataTransformationServices.VsIntegration)

Program Location:

at Microsoft.DataTransformationServices.Project.DataTransformationsPackageDebugger.ValidateAndRunDebugger(Int32 flags, DataWarehouseProjectManager manager, IOutputWindow outputWindow, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchDtsPackage(Int32 launchOptions, ProjectItem startupProjItem, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchActivePackage(Int32 launchOptions)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchDtsPackage(Int32 launchOptions, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.Launch(Int32 launchOptions, DataTransformationsProjectConfigurationOptions options)

Can anyone help me, please? The "Integration Services Error and Message Reference" didn't help me much.

Thank you

Manuel Bauer

The error does not give me any clues other than it happens during a validation stage, so what is in your Validate method?

Have your tried debugging this, i.e. Visual Studio attached to the execution host?

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Hi

Thank you for your answer. My pipeline component's validate method runs without any problems, I debugged this in design time and in run time (before the exception occured). In my opinion, the problem is the early validation (http://sqljunkies.com/WebLog/knight_reign/archive/2005/04/20/12365.aspx) of the data flow task. As I expect, the data flow task does any validation itself.

I can't imagine what "The Data Flow task cannot register a buffer type. The type had 50 columns and was for execution tree 0." means, so I really don't know where the problem could be.

The exception is thrown immediately after running the package (also after running the validate method of my pipeline component).

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Does the package work if you take your component out of it?

The early validation vs late validation is the same Validate method calls, and since it generally works, I'd say it is clear that your transform has a problem, regardless of if it is the early or late call. Early and Late means normally Validate gets called twice, there is no difference between them. The Task will have a validate method, and a Data Flow will then call Validate for each child component.

How can the exception be thrown "after" running a package, Execute will never get called if a task fails validation. What is the return of your Validate method when you debug it?

Did you debug against dtsdebughost or just Visual Studio (designer)? For simplicity when trying to resolve run-time issues I set the code project debug option to use dtexec directly, just using /F and a package file. It is faster than attaching to a designer instance of VS.

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I found a solution for my problem. I was thinking wrong about this validation thing, I thought that the data flow task does some independant, general validation itself.

In my component, I "forgot" to call base.Validate(), which would no be a problem if the own validate method is implemented as id should. In my case, it was not.

Thank you for your competent analysis of my problem.

Manuel Bauer