RE: Triggers/Recursion

[Buck Calabro <Buck.Calabro@xxxxxxxxxxxx>]

John wrote:

>I have a requirement to replicate product
>master records (in realtime) from one
>division to another, on an ongoing basis.
>The records are all contained within the
>same PF & member, with a primary key on
>Division# and Product Code. A trigger pgm
>seems like an obvious solution, but there
>is a small problem. The only compiler
>available to me is RPG, and an RPG
>program cannot be called recursively.

Is this a "complete synchronisation" - adds, updates and deletes?  If so, I
think you need to queue these up with a keyed DTAQ.

Update div 1.
  Trigger fires, places "Update hhmmss div 1" into queue.

Server reads queue - leaves entry.
  Update division 2 from Division 1 data.
    Trigger fires, sees that Division 1 is already there,
    places "remove entry" into queue.
      Server reads queue - leaves entry.
        Since it's a "remove" entry, server deletes the
        Division 1, Division 2 and "remove" entries from the queue.

What a mess.

It's not very coherent, I know, but perhaps this will spur a more
intelligent response from the list.
  --buck