Hello,
Here is how I understand your situation.
-At random time during the day, the file is cleared and is repopulated
-After the files gets repopulated, you want to call another program that will process the content of the file
-You need a way to know that the file repopulation has taken place and is finished so you can start to process it.
-You would prefer to avoid a trigger on the file since you are only interested in knowing when the repopulation process is finished.
If I understood right, the solution is to add a step in the program that uses DDM to populate the file. That step is to "signal" to the system that the file is ready for processing.
That "signal" can take several form:
- Create a "flag" file or flag data area
- Change the content of a data area
- Put an entry on a data queue
- ...
Your program would need to monitor for this flag and start processing when it is received. Personally, I would choose the data queue route.
Hope this help
Denis Robitaille
Chef de service TI – Solution d’entreprise
Infrastructure et opérations
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-----Message d'origine-----
De : RPG400-L <rpg400-l-bounces@xxxxxxxxxxxx> De la part de Booth Martin
Envoyé : 11 septembre 2018 21:44
À : RPG programming on the IBM i / System i <rpg400-l@xxxxxxxxxxxx>
Objet : run a program when a file changes
This has to be simpler than I am making it.
Several random times a day a file is cleared and then populated again through DDM . When that happens I want to automatically run a program that updates another file.
A trigger is on rows, so using a trigger would run the program for every row - not a good solution.
I cannot access the original file nor the machine that it is on.
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