Support compensation without `activityRef`

[sombrek]

Describe the Bug

A compensation throw event without an activity reference (activityRef) doesn't trigger any compensation activities.

Steps to Reproduce

See sample model: compensate-bug.bpmn.txt

Trigger the start event and wait for the process to complete.

Expected Behavior

• Compensation should trigger all compensable tasks in the scope, i.e. task C (should appear in the simulation log).

Environment

• Library version: 0.35.0

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Relevant aspects of the specification:

[barmac]

Thanks for opening the issue. I can reproduce it, and indeed the compensation should be triggered. It looks though that the entire feature of compensation support is missing as you can see in the capture:

Screen.Recording.2024-10-01.at.15.11.37.mov

[barmac]

I rephrased the issue so that it's clear that the support is missing.
As usual, we are happy to review and merge a pull request with this feature.

[nikku]

@barmac Compensation is supported, it is just a particular bug in the existing documentation reported here.

[barmac]

I wouldn't call it supported if you need to manually trigger the boundary event. It should trigger automatically.

[barmac]

Or it's a "manual-only" support.

[sombrek]

@barmac

I wouldn't call it supported if you need to manually trigger the boundary event. It should trigger automatically.

It looks though that the entire feature of compensation support is missing as you can see in the capture:

That does work. At 0:19 you can see that task C was performed in the simulation log. It's not animated, but that didn't concern me, yet. I just noticed compensation doesn't work without activityRef.

[nikku]

Fully supported, for referenced activities:

Not supported for "general scope compensation", without activityRef.