Invoke is expecting the query to yield only one item

[shashank-yelluri]

Hello @ralphhanna,
Hope you are doing well.

Is there any reason on why we are restricting the invoke() function to invoke only one item at a time ? As we are expecting the query to be passed to the invoke function, shouldn't we allow to invoke multiple items in a single go ?

The question is because, we have a group being used at multiple level in a inclusive gateway and we want to invoke the tokens from all the path once we satisfy the condition.

Attached the piece of code below, which is actually blocking the multi invoke option. Could you please suggest any workaround / provide an option to invoke the multiple items / tokens ?

Thank You !!

[ralphhanna]

Can you please elaborate on your example.
The current restriction is to no ensure user didn't make a mistake, also the item must be in a wait state.
You can simply iterate all items that you wish to invoke, in separate calls one at a time. But I am afraid I don't understand your example.

[shashank-yelluri]

1. I'm already doing the suggested work around already (Iterate + Invoke)
2. My example is this,

I have a workflow with an inclusive gateway offered token to three paths. Each path is offered to different dynamic candidateGroups. Now, two paths are having the same candidateGroups, for which i need to invoke both the token based on the common candidateGroups.

[ralphhanna]

Invoke is primarily intended for User Tasks in a wait state, since they are done one user action at a time, that is why we restrict to one item.
Yes, It can be used for other items in wait state like messages or timers.
If you have several items to be executed at once, you can use signal instead of invoke.

[shashank-yelluri]

Hello @ralphhanna
Thank you for the clarification, but any example provided in the document on how to configure the signals and trigger them ? Could you please point me to those for my exploration and re configure my workflow acc.
Thank You

[ralphhanna]

Please see docs @ https://bpmnserver.github.io/docs/examples/signal-throw-catch/