Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)
| OLE DB Programmer's Reference |
Property group: Rowset
Property set: DBPROPSET_ROWSET
Column? N
Type: VT_I4
Typical R/W: R/W
Description: Notification Granularity
- DBPROPVAL_NT_SINGLEROW—For methods that operate on multiple rows, the provider calls IRowsetNotify::OnRowChange separately for each phase for each row. A cancellation affects a single row; it does not affect the other rows, and notifications are still sent for these rows.
- DBPROPVAL_NT_MULTIPLEROWS—For methods that operate on multiple rows and then for each phase, the provider calls OnRowChange once for all rows that succeed and once for all rows that fail. This separation can occur at each phase where a change can fail. For example, if IRowsetChange::DeleteRows deletes some rows and fails to delete others during the Preliminary Work phase, it calls OnRowChange twice: once with DBEVENTPHASE_SYNCHAFTER and the array of handles of rows that it deleted, and once with DBEVENTPHASE_FAILEDTODO and the array of handles of rows it failed to delete. A cancellation affects all rows with handles that were passed to OnRowChange.
- DBPROP_NOTIFICATIONGRANULARITY does not affect how providers return notifications about events that affect columns or the entire rowset.
1998-2001 Microsoft Corporation. All rights reserved.