IRowsetChangeImpl Class
The OLE DB Templates implementation of the IRowsetChange interface in the OLE DB specification.
template <
class T,
class Storage,
class BaseInterface = IRowsetChange,
class RowClass = CSimpleRow,
class MapClass = CAtlMap < RowClass::KeyType, RowClass* >
>
class ATL_NO_VTABLE IRowsetChangeImpl : public BaseInterface
Parameters
T
A class derived from IRowsetChangeImpl.Storage
The user record.BaseInterface
The base class for the interface, such as IRowsetChange.RowClass
The storage unit for the row handle.MapClass
The storage unit for all row handles held by the provider.
Remarks
This interface is responsible for immediate write operations to a data store. "Immediate" means that when the end user (the person using the consumer) makes any changes, those changes are immediately transmitted to the data store (and cannot be undone).
IRowsetChangeImpl implements the OLE DB IRowsetChange interface, which enables updating of values of columns in existing rows, deleting rows, and inserting new rows.
The OLE DB Templates implementation supports all the base methods (SetData, InsertRow, and DeleteRows).
.gif "Important note") Important Note: |
|---|
It is strongly recommended that you read the following documentation BEFORE attempting to implement your provider: |
Chapter 6 of the OLE DB Programmer's Reference
Also see how the RUpdateRowset class is used in the UpdatePV sample
Requirements
Header: atldb.h
See Also
Concepts
OLE DB Provider Templates (C+)
The OLE DB Provider Template Architecture