Re: Trigger techniques

["James H. H. Lampert" <jamesl@xxxxxxxxxxxxxxxxx>]

Charles Wilt wrote:
> The only possible issue with this...
>
> If your actual trigger does an update to another file that also has
> the gentrigger attached, the process will blow up because RPG doesn't
> allow recursive programs.

Or, as happens in my Workflow trigger, you simply catch the recursion 
exception and ignore it: while we made Workflow a trigger, so that the 
scripts will trip regardless of whether the file modification is done 
from our application, we also designated it a "well-known limitation" 
that changes made by Workflow scripts don't trip other Workflow scripts.

If you allow recursive calls to a script-driven trigger, it would be far 
too easy to go into not just an ordinary infinite loop, but an infinite 
recursion. That would be bad. That would be "don't cross the streams" bad.

--
JHHL