topic Re: Access external Activit workflows in Alfresco Archive

Access external Activit workflows

drams — Thu, 12 Dec 2013 11:06:15 GMT

There is some documentation about accessing sub workflows (subprocesses) but nothing about how you are able to call another Activti workflow (different BPMN file) in the same environment. Is this possible?We have two different workflows, which can exist standalone, but the first workflow should be a

Re: Access external Activit workflows

frederikherema1 — Fri, 13 Dec 2013 08:32:15 GMT

A call-activity allows you to set a key of a process-definition which you want to see started. If the parent-process reaches the call-activity, it will fetch the LATEST process-definition with that key and start a new process-instance of that definition. When that child process is completed, the outgoing sequence flow from the call-activity is taken.

This is a good way to start the second process from within the first process. Offcourse, if you need actual "communication" between the parent and child, consider using message-events or using the API from inside the processes, using service-task, tasklisteners, execution-listeners. You can get hold of the EngineServices based on the DelegateTask/DelegateExecution you get passed on in those classes, allwoing you to do stuff like "engineServices.getRuntimeService().signal(childProcessInstanceId)".

Re: Access external Activit workflows

bbwilliams88 — Tue, 01 Jul 2014 16:14:19 GMT

Hi,

We have two Tomcat servers running their own Activiti engine\workflows and they share the same database. Tomcat A needs to start a process in Tomcat B, what is the best way to implement this? BTW - The client will not allow rest.
Thanks!

Re: Access external Activit workflows

martin_grofcik — Wed, 02 Jul 2014 06:08:25 GMT

Hi,
One possibility ( I do not say the best - it depends on your requirements + ….):
- run JobExecutor only on one tomcat (e.g tomcat B). Make call activity asynchronous.

Regards
Martin