Window Errors and Warning in this Transaction not shown

Question

We're using Designer 6.5.82.3.0.
Business rules aren't generated according to CDM Ruleframe, no CAPI. But Table API/trigger logic.
=> Pre-Before-Insert-Row
BEGIN
if CDR_CPN.F_CPN_UNIQUE(:new.CODE)
then
-- a new code
null;
else
-- code already exists
QMS$ERRORS.SHOW_MESSAGE
('CDR-05000'
,:new.CODE);
end if;
END;
When an business rule fails the window Errors and Warning in this Transaction with the error-message is not shown. Instead we get the message Transaction failed
(when using sqlplus the same message appears, then running @messages.sql =>correct message)
According to a previous discussion the ON-ERROR of the module component should be modified (author Bart van Ges 22 May 2002). And this works, the window Errors and Warning in this Transaction is shown with the correct message.
Has anyone another solution, patch or any idea why the window doesn't appear without the modification?
Cheers,
Bob

Answer 1

All,
Since Headstart for 6.0 (patch 12) and Headstart for 6i, Headstart default only functions well in combination with CDM RuleFrame. If you want to deviate from this standard, the functionality in the libraries should be adapted for this purpose. There are several ways to do this:
- show serverside errors in an error Alert window
- show serverside errors in the RuleFrame transaction and errors window.
Whatever approach you choose - in this thread several suggestions are being made - it is not documented in headstart how to do this. The Oracle Headstart group is not able at this moment to investigate time to workout the alternatives, though I will add an enhancement request to headstart to document these options in the headstart user guide.
Two extra suggestions:
- try to test your workaround as well as possible (try to raise errors from server, client, try to violate server constraints (pk, uk, fk, ck) and try to let serverside pl/sql fail.
- if you do not make use of ruleframe, you might run into a problem if you try to commit in the serverside logic, in this case remove the calls in the template package (qms$even_form) to open and close the transaction (pre-commit and post-forms-commit trigger events).
Regards,
Marc Vah[i]Long postings are being truncated to ~1 kB at this time.