Appendix B: Supported Interfaces of the Persistence Provider

项目
07/05/2016

The OLE DB Persistence Provider supports the following OLE DB interfaces.

Interface	Support notations
IAccessor	Object type: Rowset Provides methods for accessor management. For information about accessors, see Accessors.
IChapteredRowset	Object type: Rowset Allows consumers to manage chapters.
IColumnsInfo	Object type: Rowset Exposes information about columns of a rowset or prepared command and provides a limited set of information in an array.
IColumnsRowset	Object type: Rowset Supplies complete information about columns in a rowset. Its methods can be called from a rowset or a command. Support is dependent on available stream schema information.
IConvertType	Object type: Rowset Mandatory on commands, rowsets, and index rowsets, giving information about the availability of type conversions on a command or rowset.
IDBCreateSession	Object type: Data source Creates a new session.
IDBInitialize	Object type: Data source Initializes or uninitializes a data source object or an enumerator.
IDBProperties	Object type: Data source Sets and gets values of properties on the data source object or enumerator and gets information about all properties supported by the provider.
IGetDataSource	Object type: Session Mandatory; obtains an interface pointer to the data source object.
IOpenRowset	Object type: Session Opens and returns a rowset that includes all rows from a single base table or index.
IPersist	Object type: Data source See IPersist* Objects for an overall discussion. See Getting and Setting IPersist* Objects for specific implementation notes. For additional considerations, see Lifetime of IPersist* Objects and IPersist* Objects, Rowset Update Semantics, and ITransaction. (All sources are in theOLE DB Programmer's Guide.)
IRowsetInfo	Object type: Rowset Provides information about a rowset and methods for retrieving objects associated with the rowset.
IRowset	Object type: Rowset Base rowset interface, providing methods for fetching rows sequentially, getting the data from those rows, and managing rows.
IRowsetUpdate	Object type: Rowset GetOriginalData and GetRowStatus are supported. All others return E_NOTIMPL. IRowsetUpdate::GetOriginalData gets the data most recently fetched from or transmitted to the data store; does not get values based on pending changes. IRowsetUpdate::GetRowStatus returns the status of rows.
ISessionProperties	Object type: Session Mandatory for sessions. Returns information about the properties a session supports and the current settings of those properties.
ISupportErrorInfo	Object type: Session and data source Defined by Automation and indicates whether a specific interface can return Automation error objects.

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OLE DB Persistence Provider