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IRowsetChangeImpl Class

  • Article

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.

Members

Interface Methods (Used with IRowsetChange)

DeleteRows

Deletes rows from the rowset.

InsertRow

Inserts a row into the rowset.

SetData

Sets data values in one or more columns.

Implementation Method (Callback)

FlushData

Overidden by provider to commit data to its store.

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).

Important

It is strongly recommended that you read the following documentation BEFORE attempting to implement your provider:

Requirements

Header: atldb.h

See Also

Concepts

OLE DB Provider Templates (C++)

OLE DB Provider Template Architecture