TCursorOptions indicates the functionality provided by a recordset.
TCursorOptions = set of TCursorOption;
TCursorOption TCursorOptions;
TCursorOptions is a set of individual options that the Supports method checks for. Include one or more of these values as a set for the CursorOptions parameter of Supports.
The constants of the TCursorOptions type correspond directly to the CursorOptions parameter of the Supports method of the ADO Recordset object. See the Microsoft Data Access SDK help for information on these values and their effects.
TCursorOptions consists of the eleven constants summarized in the following table.
|
Cursor Option |
Meaning |
|
coHoldRecords |
More records can be retrieved or the position of the next retrieve can be changed without committing pending changes. |
|
coMovePrevious |
The pointer in the ADO Recordset object can be moved backwards without using bookmarks. |
|
coAddNew |
The recordset supports adding new records. |
|
coDelete |
The recordset supports deleting existing records. |
|
coUpdate |
The recordset supports modifying existing records. |
|
coBookmark |
The Bookmark property of the Recordset object can be used to move to or access specific records. |
|
coApproxPosition |
The recordset supports use of the RecNo property of the ADO dataset component. |
|
coUpdateBatch |
Batch updating (using the UpdateBatch and CancelBatch methods) can be used to transmit changes to the provider in groups. |
|
coResync |
The data in the cursor can be updated with the Resync method. |
|
coNotify |
The recordset supports notifications and returns events. |
|
coFind |
The Locate method can be used with the ADO dataset component. |
|
coSeek |
The Seek method can be used to search for a row in a dataset. |
|
coIndex |
The IndexName property of the ADO dataset component can be used to specify an index. |
|
Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
|
|
What do you think about this topic? Send feedback!
|
File