[rules-users] multi-tier decision application in drools server

Yuri yuri0282+drools at gmail.com
Mon Jan 21 16:00:59 EST 2013


Hi Everyone,
I am trying to use drools 5.5.0 to provide approval/denial for a case.  The
best way to represent our business logic is through a workflow where the
user-inserted facts get processed in a particular step, and the RHS of the
rules in that step insert new facts for the next step in the flow, until,
at the end, a decision fact is generated.  Looking at the Drools Expert
tutorial, this is very similar to the driver license application, except
that mine has a jbpm flow.  As such, I have been using a stateless session
to get my rules to work.
Until recently, I have been working on this problem as a local drools
expert solution, referencing the rules engine and the rules package
directly.  However, the final step was going to be to move this solution to
drools server so that the business logic could be accessed through a
RESTful interface.  I assumed that the main functionality available in the
drools rules engine would remain in drools server. However, when I saw the
following post, I became concerned that perhaps the functionality I took
for granted in Drools Expert does not exist in Drools Server.  The post was
recent and has not gotten a response, but if the response is indeed that
stateless sessions do not work with rule flows in drools server, I was
wondering if anyone had a suggestion for how I would tackle my workflow
problem.  Is there another way in drools server (other than salience) to
get different sets of rules to execute in a particular order and come up
with an answer at the end of the work flow?

http://drools.46999.n3.nabble.com/Ruleflow-not-working-with-stateless-session-in-drools-server-5-5-0-Final-td4021624.html

Best,
Yuri

PS. I have been able to reproduce the scenario described by the user in the
post above.
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