Question

How to control asynchronous jobs on Mendix.

0

Dears, I don't know how to control asynchronous jobs on Mendix. The job may be asynchronous or multitasking. Can't I do the following? (1) I want to execute an asynchronous job using Queue etc. (2) I want to display a message such as "Completed" or "Error" on the client screen after the asynchronous processing is completed. Regards.

asked 2021-02-12

Ichiro Kikukawa

3 answers

Tim v Steenbergen · Answer 1 · 2021-02-12

Check out these three Queue managers from the Marketplace and see for yourself which fits you purpose best:

- https://marketplace.mendix.com/link/component/435, using the perks Java

- https://marketplace.mendix.com/link/component/106628, with a nice demo here

- https://marketplace.mendix.com/link/component/393, the oldest and the only one with the best support-type: ‘platform’

Andrej Gajduk · Answer 2 · 2021-02-12

Sounds like what you really want is synchronous execution that happens in a background thread (and possibly in multiple threads).

If the order of execution does not matter you can take a look at Parallel Execute https://marketplace.mendix.com/link/component/116433

I wrote this module exactly for this purpose it is fully synchronous, so you can use standard error handling and result in Mendix.

Robert Price · Answer 3 · 2021-02-12

You can create a generalisation of the Job entity and store a flag there, or associate another entity to it and store a flag there that it has completed.

Outside this job you can use a scheduled event in the background to check for completeness, or a microflow timer (from the app store) on a page to retrieve and check the status. In your case, the microflow timer running every X time period seems the best approach.