udcurscnt
Return the number of open database cursors
short
udcurscnt
(uc, drvnum, delta)
struct uctrl
*uc;
short
drvnum, delta;
Parameters
- uc—address of the current control block.
- drvnum—connector number
(available in
uctrl->udrvnum
). - delta—number of cursors that have been opened (delta > 0) or closed (delta < 0).
Return Values
The new total number of open database cursors.
Description
udcurscnt
returns the total number
of open database cursors, which informs Uniface that the number
of open database cursors has changed. If the connector opens or
closes one or more database cursors, it must call udcurscnt
within the execution of
the same connector request.
This example closes a cursor and adjusts the cursor count. Error checking is not performed.
CloseCursor ( struct uctrl *ControlBlock, CursorIdType CursorId ) { char *Cursor = CursorName ( CursorId ); EXEC SQL CLOSE :Cursor; /* This depends on the API of your DBMS. */ if ( Success() ) { udcurscnt ( ControlBlock, ControlBlock->udrvnum, -1 ); /* Possibly perform some administrative actions on CursorId. */ } else { /* Some actions to process the error. */ } }