[Pharo-users] Workflows and possible usages

eftomi tomaz.turk at ef.uni-lj.si
Mon Sep 30 02:26:16 EDT 2019


Please see also http://www.workflowpatterns.com/. 

Historically, BPMN by itself was regarded difficult to automate. BPEL as a
workflow language (Oracle SOA, Microsoft BizTalk server) can be interpreted
easily by machine, but it is not so easy to learn by the people who have to
model the process. There were some effors to make an automatic translation
from BPMN to BPEL but it didn't succeed - it was a true challenge, and the
platforms that I mentioned in previous email were already coming to the
stage, so this idea went downhill. YAWL is another workflow language
attempt, however it is not widely accepted, in my opinion from similar
reasons as for BPEL.

As I said, a possible direction is to go for BPMN. It can be based on
Workflow Patterns "behind the scenes". Here's an example of this approach in
Python https://github.com/knipknap/SpiffWorkflow. However, the platforms
that I mentioned have "... an embeddable, lightweight process engine in
Java, supporting native BPMN 2.0 execution ..."
(https://en.wikipedia.org/wiki/JBPM) and similar, so a direct support for
BPMN 2.0 shouldn't be too difficult after all.

One of the advantages to build an engine in Pharo around BPMN is that it
would be directly usable by a large community that works on processes
digitalization. They understand the processes and the notation.

Best wishes,
Tomaz



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