Interface DTSBufferManager
Manages IDTSBuffer100 objects.
Espace de noms : Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly : Microsoft.SqlServer.DTSPipelineWrap (en Microsoft.SqlServer.DTSPipelineWrap.dll)
Syntaxe
'Déclaration
<GuidAttribute("E25EC665-7DB0-41F9-B0FC-E58318DA64BC")> _
Public Interface DTSBufferManager _
Inherits IDTSBufferManager100
'Utilisation
Dim instance As DTSBufferManager
[GuidAttribute("E25EC665-7DB0-41F9-B0FC-E58318DA64BC")]
public interface DTSBufferManager : IDTSBufferManager100
[GuidAttribute(L"E25EC665-7DB0-41F9-B0FC-E58318DA64BC")]
public interface class DTSBufferManager : IDTSBufferManager100
[<GuidAttribute("E25EC665-7DB0-41F9-B0FC-E58318DA64BC")>]
type DTSBufferManager =
interface
interface IDTSBufferManager100
end
public interface DTSBufferManager extends IDTSBufferManager100
Le type DTSBufferManager expose les membres suivants.
Propriétés
| Nom | Description | |
|---|---|---|
.gif "Propriété publique") |
IsVirtual | Gets a value that indicates whether the specified buffer is a virtual buffer. (hérité de IDTSBufferManager100.) |
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Méthodes
| Nom | Description | |
|---|---|---|
.gif "Méthode publique") |
CreateBuffer | Creates an IDTSBuffer100 based on the specified buffer type. (hérité de IDTSBufferManager100.) |
|
CreateFlatBuffer | Creates an IDTSBuffer100 of the specified size. (hérité de IDTSBufferManager100.) |
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CreateFlatBuffer64 | Creates an IDTSBuffer100 of the specified size. (hérité de IDTSBufferManager100.) |
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CreateVirtualBuffer | Infrastructure. Creates a virtual IDTSBuffer100 object. (hérité de IDTSBufferManager100.) |
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FindColumnByLineageID | Gets the location, by index, of a column in a specified IDTSBuffer100 object. (hérité de IDTSBufferManager100.) |
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GetBLOBObject | Creates an IDTSBLOBObject100 that is used to manipulate binary large objects (BLOBs). (hérité de IDTSBufferManager100.) |
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GetColumnCount | Gets the number of columns in a specified registered buffer type. (hérité de IDTSBufferManager100.) |
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GetColumnInfo | Gets the DTP_BUFFCOL structure for a column in a specified buffer definition. (hérité de IDTSBufferManager100.) |
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GetRowWidth | Gets the size, in bytes, of the row defined for the buffer type definition. (hérité de IDTSBufferManager100.) |
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RegisterBufferType | Registers a buffer type with an IDTSBufferManager100. (hérité de IDTSBufferManager100.) |
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RegisterLineageIDs | Infrastructure. Registers the specified IDTSBuffer100 object. (hérité de IDTSBufferManager100.) |
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Notes
The buffer manager is responsible for allocating, managing, and deleting the IDTSBuffer100 objects used by the data flow task and the data flow components, from a source through to the destination. It provides utility functions for registering buffer types, locating columns in a buffer, retrieving metadata about a column in a buffer, and creating private buffers that are used internally by the component that requests the private buffer.
Managed data flow component developers use the buffer manager primarily to locate columns in a PipelineBuffer that were defined in the IDTSInput100 and IDTSOutput100 objects of the component. Managed component developers do not use the buffer manager to create IDTSBuffer100 objects because managed components do not interact directly with the IDTSBuffer100 objects created by the buffer manager. Managed components use the managed PipelineBuffer class that marshals data between managed and native code.