Interface IDTSBuffer100

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

Espace de noms :  Microsoft.SqlServer.Dts.Pipeline.Wrapper
Assembly :  Microsoft.SqlServer.DTSPipelineWrap (en Microsoft.SqlServer.DTSPipelineWrap.dll)

Syntaxe

'Déclaration
<GuidAttribute("62F50D4D-3EA5-4859-A606-95CA9FDDC356")> _
<InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)> _
Public Interface IDTSBuffer100
'Utilisation
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

Le type IDTSBuffer100 expose les membres suivants.

Méthodes

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

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Notes

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 nullune référence Null (Nothing dans 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.

Voir aussi

Référence

Espace de noms Microsoft.SqlServer.Dts.Pipeline.Wrapper