Pro*C program to use a REF CURSOR returned by a DB Function

Question

Hi,
Please help me with this.
I have a pro*c program that should call a
database function which returns a ref cursor.
This is the sample code i have :-
EXEC SQL BEGIN DECLARE SECTION;
SQL_CURSOR emptycabin_cursor;
int cabinid;
EXEC SQL END DECLARE SECTION;
EXEC SQL ALLOCATE :emptycabin_cursor;
EXEC SQL EXECUTE BEGIN
:emptycabin_cursor:=posremptycabin(:voy,:segid);
END;END-EXEC;
/* more_records = 1*/
while (more_records)
EXEC SQL FETCH :emptycabin_cursor INTO :cabinid;
if (SQLCODE==NOTFOUND)
{more_records=FALSE;break;}
EXEC SQL close :emptycabin_cursor;
When I execute I keep getting fetch out of sequence error.
Can someone let me know whats wrong with this code?
When I execute the function from sqlplus
variable ref_cur refcursor ;
exec :ref_cur:=posremptycabin(232,'CC');
print :ref_cur;
I get the data properly displayed.So nothing wrong with the function.
Thanks for your help

Answer 1

I know nothing about Pro*C, but Tom Kyte's Pro*C example for ref cursors fetches the cursor with a loop that looks like:
for( ;; )
        EXEC SQL WHENEVER NOTFOUND DO break;
        EXEC SQL FETCH :my_cursor INTO :ename, empno;
        printf( "'%.*s', %d\n", ename.len, ename.arr, empno );
    EXEC SQL CLOSE :my_cursor;http://asktom.oracle.com/~tkyte/ResultSets/index.html
Hope this helps.