topic Re: How to distinguish between Activity_Started Events of the same Activity ID? in Alfresco Forum

How to distinguish between Activity_Started Events of the same Activity ID?

maayanl — Thu, 23 Feb 2017 15:04:20 GMT

Hi,I'm trying to catch all the events raised in consequence of starting or completing of serviceTask Activities.Event types: ACTIVITY_STARTED, ACTIVITY_COMPLETED.My system is integrated with Activiti through ActivMQ by defining the property "typedEventListeners" and implementing a class that catch t

Re: How to distinguish between Activity_Started Events of the same Activity ID?

jearles — Fri, 24 Feb 2017 22:44:39 GMT

Maayan,

I don't have an answer for you right now - but I'm digging a little bit deeper.

-JEarles

Re: How to distinguish between Activity_Started Events of the same Activity ID?

maayanl — Sun, 26 Feb 2017 07:42:47 GMT

Thank you.
I keep trying to find an appropriate solution.
Maayan

Re: How to distinguish between Activity_Started Events of the same Activity ID?

gdharley — Mon, 27 Feb 2017 01:00:57 GMT

Ok, so you listener will (must) implement the ActivitiEventListener interface which gives you access to the execution context (DelegateExecution).
Therefore, you have access the process instance variables.
I would add a simple loop counter (if you use a serial multi-instance loop this is provided for you) as a process variable and then inside your listener add this to the Activity ID (e.g. MyTask:2).

Regards,

Greg

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Re: How to distinguish between Activity_Started Events of the same Activity ID?

maayanl — Mon, 27 Feb 2017 08:02:41 GMT

Hi Greg,

First of all, thank you for your answer.

One problem with this solution-

I cannot be sure there will be a counter on the loop and if so, I cannot be sure what is the counter variable name.

The process model is defined by different people and I need to be able to handle each case without making any assumption about the process model flow or variables.

Is it sound like something possible?

Thank you,

Maayan

Re: How to distinguish between Activity_Started Events of the same Activity ID?

gdharley — Mon, 27 Feb 2017 14:05:00 GMT

Yeah, if you cannot control the definition of the processes, and you don't even know if a loop is in the model, then there's not a whole helluva lot you can do.

The best thing I could suggest would be to add a parse handler to the engine and add a listener that handles the logic to make each task name unique.

The reality here is BPM is about controlling your processes, if you have no controls in place in the authoring and deployment side of things, you really aren't doing BPM.

Greg

Re: How to distinguish between Activity_Started Events of the same Activity ID?

maayanl — Wed, 01 Mar 2017 14:18:57 GMT

Hi,

The suggestion of adding a parse handler to the engine and adding a listener that handles the logic to make each task name unique is sounds like somthing that can be helpful.

Thanks alot!

Maayan