Avoid parallel flows

Cristian_Mastrantono · March 23, 2015, 8:38pm

Hi there!

I’m wondering if there is any way I can prevent creating parallel sequence flows. For example, I want to offer only the exclusive gateway, and make some checks to avoid having many sequence flows on the outcome of a user task. In addition, limit the types of tasks the user can create would be great.

Thats it

Thanks!
Cristian.

nikku · March 24, 2015, 7:27am

TLDR; Not out of the box, you need to customize bpmn-js.

There are a number of components you need to implement custom modeling palette/rules:

ContextPadProvider - responsible for showing the context pad / replace menu
PaletteProvider - adding a custom palette
ModelingRules - disallowing more than n outgoing/incoming edges to user tasks

At some point we will provide functionality to make this kind of customization easier. We are not there yet, though.

Cristian_Mastrantono · March 24, 2015, 1:49pm

Nice!

I’ll give it a try.

Thanks!

Cristian_Mastrantono · March 31, 2015, 5:00pm

Hi Nikku,

Is it possible to avoid more than one outgoing sequence flow from a certain activity o User Task ?

I’m looking at the code in ModelingRules, but can’t find this particular case.

Thanks!
Cristian.

Cristian_Mastrantono · March 31, 2015, 8:14pm

Nevermind! I found it.
Just for the record, you can just do–> businessObject.get(‘outgoing’).length >= n
And then make some conditions
bpmn-js rocks!