• Статья

Интерфейс DTSBufferManager

Manages IDTSBuffer100 objects.

Пространство имен:  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Сборка:  Microsoft.SqlServer.DTSPipelineWrap (в Microsoft.SqlServer.DTSPipelineWrap.dll)

Синтаксис

'Декларация
<GuidAttribute("E22328E1-02FA-4365-9EDE-120324F715BF")> _
Public Interface DTSBufferManager _
    Inherits IDTSBufferManager100
'Применение
Dim instance As DTSBufferManager

[GuidAttribute("E22328E1-02FA-4365-9EDE-120324F715BF")]
public interface DTSBufferManager : IDTSBufferManager100

[GuidAttribute(L"E22328E1-02FA-4365-9EDE-120324F715BF")]
public interface class DTSBufferManager : IDTSBufferManager100

[<GuidAttribute("E22328E1-02FA-4365-9EDE-120324F715BF")>]
type DTSBufferManager =  
    interface
        interface IDTSBufferManager100
    end

public interface DTSBufferManager extends IDTSBufferManager100

Тип DTSBufferManager обеспечивает доступ к следующим элементам.

Свойства

  Имя Описание
Открытое свойство IsVirtual Gets a value that indicates whether the specified buffer is a virtual buffer. (Производный от IDTSBufferManager100.)

В начало

Методы

  Имя Описание
Открытый метод CreateBuffer Creates an IDTSBuffer100 based on the specified buffer type. (Производный от IDTSBufferManager100.)
Открытый метод CreateFlatBuffer Creates an IDTSBuffer100 of the specified size. (Производный от IDTSBufferManager100.)
Открытый метод CreateVirtualBuffer Инфраструктура. (Производный от IDTSBufferManager100.)
Открытый метод FindColumnByLineageID Gets the location, by index, of a column in a specified IDTSBuffer100 object. (Производный от IDTSBufferManager100.)
Открытый метод GetBLOBObject Creates an IDTSBLOBObject100 that is used to manipulate binary large objects (BLOBs). (Производный от IDTSBufferManager100.)
Открытый метод GetColumnCount Gets the number of columns in a specified registered buffer type. (Производный от IDTSBufferManager100.)
Открытый метод GetColumnInfo Gets the DTP_BUFFCOL structure for a column in a specified buffer definition. (Производный от IDTSBufferManager100.)
Открытый метод GetRowWidth Gets the size, in bytes, of the row defined for the buffer type definition. (Производный от IDTSBufferManager100.)
Открытый метод RegisterBufferType Registers a buffer type with an IDTSBufferManager100. (Производный от IDTSBufferManager100.)
Открытый метод RegisterLineageIDs Инфраструктура. (Производный от IDTSBufferManager100.)

В начало

Замечания

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.