Problem with CAPI routines get_date|num|char_value

Question

Hi CDM Ruleframe users,
I created the following testscript
(table a (id number,begindate date))
begindate is initial 01-01-2000 for id=1
1) update table a set begindate= sysdate
2) rollback.
3) app_a_capi.get_date_value
In the debug monitor i log the data value this routine returns. This routine returns the new value of the date value (sysdate) instead of the old one(01-01-2000)!
Is this because the built-in cache of the CAPI is not working properly?
We are using CDM Ruleframe with CAPI generator v 6.0.2.1.
Kind regards,
Jan-Derk Weitering
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Answer 1

Jan-Derk,
It is technically not possible to rollback the CAPI cache (stored in package variables) just by issueing a database rollback command. There is no ON ROLLBACK database trigger to catch the event.
If you want to do a rollback in a CDM RuleFrame environment, you should always call qms_transaction_mgt.abort_transaction instead. This combines rollback with clean up of transaction management, clears all business rules from the rule stacks and clears all messages from the cg$errors message stack.
After this, it is possible that the CAPI cache still contains the wrong value, but no business rule code will look at it because there is no open transaction anymore. When a new DML action is performed, the CAPI cache is cleared (with each DML action, the CAPI compares the current transaction id to the previous transaction id).
I hope this explains it,
regards,
Sandra