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Interfaz IDTSBuffer100

  • Artículo

Represents an in-memory, two-dimensional storage object that contains rows and columns.

Espacio de nombres:  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Ensamblado:  Microsoft.SqlServer.DTSPipelineWrap (en Microsoft.SqlServer.DTSPipelineWrap.dll)

Sintaxis

'Declaración
<GuidAttribute("62F50D4D-3EA5-4859-A606-95CA9FDDC356")> _
<InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)> _
Public Interface IDTSBuffer100
'Uso
Dim instance As IDTSBuffer100

[GuidAttribute("62F50D4D-3EA5-4859-A606-95CA9FDDC356")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IDTSBuffer100

[GuidAttribute(L"62F50D4D-3EA5-4859-A606-95CA9FDDC356")]
[InterfaceTypeAttribute(ComInterfaceType::InterfaceIsIUnknown)]
public interface class IDTSBuffer100

[<GuidAttribute("62F50D4D-3EA5-4859-A606-95CA9FDDC356")>]
[<InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)>]
type IDTSBuffer100 =  interface end

public interface IDTSBuffer100

El tipo IDTSBuffer100 expone los siguientes miembros.

Métodos

  Nombre Descripción
Método público AddBLOBData Appends byte data to a column in an IDTSBuffer100.
Método público AddRow Adds a new row to an IDTSBuffer100 object.
Método público Clone Creates a private copy of an IDTSBuffer100 object.
Método público DirectErrorRow Sends a row in an IDTSBuffer100 object to an IDTSOutput100 whose IsErrorOut property is true.
Método público DirectRow Sends a row in an IDTSBuffer100 to an IDTSOutput100.
Método público GetBLOBData Retrieves an array of bytes from a binary large object (BLOB) stored in a column of a IDTSBuffer100.
Método público GetBLOBLength Gets the number of bytes contained in a column in an IDTSBuffer100.
Método público GetBLOBObject Gets an IDTSBLOBObject100 that is used to read and write the bytes in a column in an IDTSBuffer100.
Método público GetBLOBStream Gets an IStream interface used to access the binary large object (BLOB) stored in a column in an IDTSBuffer100.
Método público GetBoundaryInfo Gets the number of columns and the maximum number of rows that an IDTSBuffer100 can hold.
Método público GetColumnCount Gets the number of columns in an IDTSBuffer100.
Método público GetColumnInfo Gets the DTP_BUFFCOL structure for the specified column in an IDTSBuffer100.
Método público GetData Retrieves the data stored in a specified row and column of a IDTSBuffer100.
Método público GetDataByRef (Feature deprecated, see Remarks.) Gets a pointer to the data stored in a column in an IDTSBuffer100.
Método público GetFlatMemory Gets a pointer to the bytes stored by an IDTSBuffer100.
Método público GetID Retrieves the ID of a buffer.
Método público GetManager Gets a buffer manager.
Método público GetRowCount Gets the number of rows stored in an IDTSBuffer100.
Método público GetRowDataBytes (Feature deprecated, see Remarks.) Gets a pointer to the start of a row in an IDTSBuffer100.
Método público GetRowStarts (Feature deprecated, see Remarks.) Use the GetData or GetBLOBData method instead of the GetRowStarts method.
Método público GetStatus Retrieves the status information of a column in an IDTSBuffer100.
Método público GetType Gets the handle of a buffer type.
Método público IsEndOfRowset Specifies whether an IDTSBuffer100 has reached the end of its collection of rows.
Método público IsNull Checks whether a specified column is null.
Método público LockData Locks the data in an IDTSBuffer100.
Método público MoveRow Moves a row in an IDTSBuffer100 to a new location.
Método público PrepareDataStatusForInsert Sets the status value of the columns in a range of rows.
Método público RemoveRow Deletes a row from an IDTSBuffer100.
Método público ResetBLOBData Deletes the bytes stored in a column in an IDTSBuffer100.
Método público SetBLOBFromObject Assigns the data contained in an IDTSBLOBObject100 to a column in an IDTSBuffer100.
Método público SetBLOBFromStream Assigns data to a binary large object (BLOB) column from a sequential stream.
Método público SetData Assigns data to a column in an IDTSBuffer100.
Método público SetEndOfRowset Notifies an IDTSBufferManager100 that the component has finished adding rows to an output IDTSBuffer100 object.
Método público SetErrorInfo Sets the error information for a row.
Método público SetStatus Sets the status information of a column in an IDTSBuffer100.
Método público SwapRows Swaps the location of two rows in an IDTSBuffer100.
Método público UnlockData Unlocks the data in an IDTSBuffer100 object.

Arriba

Comentarios

The IDTSBuffer100 is an in-memory, two-dimensional data structure that contains rows and columns. Each column in a buffer has information that describes its data type, its offset location in memory in the row, its maximum size, and the lineage ID of the column in a component.

The data in each column is accessed either by using its offset as defined by the DTP_BUFFCOL structure, or by using the SetData and GetData methods, in which the data location of the column in the buffer is defined by handles to its row and column.

There are two types of buffers, private and public, which are created by the IDTSBufferManager100. Private buffers are created when requested by a data flow component and are used internally by the component. Public buffers are provided to the components in the data flow graph and filled and manipulated before arriving at the destination. Public buffers are created, managed, and destroyed by the IDTSBufferManager100.

Buffers are identified by their handles and are 1-based, which means they cannot have a value of zero or nulles una referencia NULL (Nothing en Visual Basic). unless they are invalid.

Managed component developers do not typically use the IDTSBuffer100 object unless they intend to create private buffers and implement the code necessary to interoperate between managed code and native code. Instead, they use the managed PipelineBuffer class.

Vea también

Referencia

Espacio de nombres Microsoft.SqlServer.Dts.Pipeline.Wrapper