Headstart Business Rule IN parameter changes value

Question

I've created a Business Rule (CEV rule � triggered by create) with following code:
IN parameters: p_datum_van, p_cat and p_prest
cursor c_cap is select datum_tot
from cew_cat_prest
where . . .
and p_datum_van between datum_van and datum_tot
and datum_tot is not null;
l_datum_tot cew_cat_prest.datum_tot%type;
begin
dbms_output.put_line('BR5 p_datum_van '||p_datum_van);
open c_cap;
fetch c_cap into l_datum_tot;
if c_cap%found then
dbms_output.put_line('BR5 eerste controle p_datum_van '||p_datum_van);
update cew_cat_prest
set datum_tot = p_datum_van - 1
where cat = p_cat
and prest = p_prest
and datum_tot = l_datum_tot;
dbms_output.put_line('BR5 tweede controle p_datum_van '||p_datum_van);
update cew_cat_prest
set datum_tot = l_datum_tot
where cat = p_cat
and prest = p_prest
and datum_van = p_datum_van;
dbms_output.put_line('BR5 derde controle p_datum_van '||p_datum_van);
The updates are not executed correctly since p_datum_van changes !!!
Eerste controle: p_datum is correct
Tweede controle: p_datum has changed its value
What we do:
Record 1: van (from) 01/01/2003 tot (to) 31/01/2003
Record 2: van 01/02/2003 tot <null>
Add new record: van 15/01/2003
What we want:
Record 1: van 01/01/2003 tot 14/01/2003
Record 3: van 15/01/2003 tot 31/01/2003
Record 2: van 01/02/2003 tot <null>
Eerste controle: parameter p_datum_van = 15/01/2003
Tweede controle: parameter p_datum_van = 01/01/2003
Remark: if we use the TAPI procedure ups instead of updates, we have the same problem
How is it possible that an IN parameter changes its value during execution of a procedure ???

Answer 1

Tim,
Headstart should be able to check out any tables you need.
We think we have the user settings
done correctly, but there may be something that we
have missed. How can we get Headstart to
automatically check-out the table(s) for which we
want to run the Business Rules design transformer?The user settings you need are (see also pages 5-7 and 5-10 in the Headstart User's Guide):
- Under 'Process the following objects', choose 'Checked out by anyone'
- Also check the check box '... also Checked In objects'
- Choose whether you want to automatically check out with or without lock
If this does not help, please run the utility with log level 'Debug Detailed' (can also be set in the User Preferences) and report the last few lines of the log messages. They should give an indication of why the check out does not succeed.
Hope this helps,
Sandra Muller