Calling stored procedures using forms & ruleframe

Question

Does anybody know how I should call a stored procedure (which does some DML on tables) from forms when ruleframe is used? Should a transaction be opened before the procedure is called and closed afterwards? What should happen in the exception handler of the stored procedure, and how should exceptions be handled in the form?

Answer 1

Mike,
When calling code that performs DML, you must explicitly code the open and close transaction call. In that call, specify a program name that is specific to that piece of code. And you have to have an exception handler (see below).
What will happen, is that the open transaction call checks if a transaction is already open. If it is, it does nothing, and also the close transaction call will then do nothing, as the transaction was opened by another program unit.
If there is no open transaction yet, your call will open one, and then your close-call will also close it because it has the same program name. If at that moment errors are raised, you have to catch them with the standard Headstart exception handler (which you ought to have in all your Forms program units):
when form_trigger_failure
then
raise;
when others
then
qms$errors.unhandled_exception(<program unit>);
This exception handler will recognize the ruleframe exception and show the messages.
We have updated the CDM RuleFrame documentation for 6i to make this more clear, to avoid confusion in the future.
Hope this helps,
Sandra