[concern-users] evaluating con:cern

[frantisek k. <fra...@gm...>]

Hi,
I'm evaluating OSBL and workflow engines in general. I have no experiences
with workflow systems. I tried two engines and decided for jBPM. But I have
some doubt about it. And especially after reading all the patterns from
workflowpatterns.com, what is really good site. Why such easy things needs
so much effort to realize (tokens, decisions, events... all the imperative
way). Last week when reading Case Handling: A New Paradigm for Business
Process Support by Wil M.P. van der Aalst I realized, that this is what we
need. But is just a feeling I don't have any evidence. To gain evidence I
must try a case handling system and model various situations, some which are
easy to model in jBPM and hopefully stay easy to model in concern, and some
which are hard to model in jBPM and will be easier to model in concern.

This is what I found very useful, hopefully I understood it well:

Flow can be data driven but you still have the causal realtionship between
tasks.

I like the idea that subject is the same as process instance in other
workflow engines, which gave me power to make various queries with user
defined process variables (not only default variables, such as process name,
time created... I made it working in jBPM  with user defined process
variables as well but it was a lot of additional coding and several
queries/subqueries are needed to do that job).


My questions:

1.) Is there any working example of concern. I'm interested in something
easy like http://docs.jboss.org/jbpm/v3/userguide/tutorial.html . Process
definition, code and junit tests. Not too much architecture, because we have
our own, and I want pluggable solution. Just to get familiar with process
definitions, con:cern api and execution model.

2.) I downloaded osbl 1.0 and con:cept 1.1 and I can't open urlaub and
riskmanagement examples in designer. Probably they are using different
version of emf models.

3.) What are your experiences with con:cern so far? I have found some older
pages, but that time you were only beginning.

4.) Is there any comprehensive documentation for all the model elements in
con:cern language (preffered English but German is ok as well)?

5.) Can you point me to some interesting articles concernig case handling?
The best with case handling and workflow examples.

Thanks for help

Fero