[rules-users] Problem in Concurrent execution of Rules

[Wolfgang Laun]

If you create another session object for each user request, there is no
concurrency issue in the rule engine.

How do you collect and return the output? Is this sufficiently guarded
against race conditions?

-W


2011/1/17 Nikhil S. Kulkarni <Nikhil.Kulkarni at mastek.com>

>  Hi All,
>
>
>
>                 I am using JBOSS Drools 5.0. The problem which I am
> currently facing is concurrent execution of Rules.
>
> I am using RuleBase to get Session object
>
> i.e.
>
> RuleBase ruleBase = RuleBaseFactory.newRuleBase();
>
> StatelessSession session = ruleBase.newStatelessSession();
>
> Session.execute(ArrayList of Facts);
>
>
>
> In the application I am creating separate RuleBase and session object for
> each request of process.
>
>
>
> Now the Problem is as follows :-
>
> There are currently two users logged in the System.
>
> Suppose User 1 clicks a button to process 100 members of Data using Rules
> and User 2 clicks same  button to process same 100 members of Data,
>
> When request of User 1 comes to Rule Engine, it starts processing its data
> but as User 2 comes to Rule Engine, The engine stops processing the request
>
> of User 1 and continues processing Request of User 2 because of which I am
> not getting same output in both the cases though the Input to Rules is same.
>
>
>
> If I do the process one after the another then I am getting correct values
> but it is not working for Concurrent execution.
>
>
>
> *Thanks & Regards,*
>
> *Nikhil S. Kulkarni*
>
> * *
>
>
>
>
>
> MASTEK LTD.
> In the US, we're called MAJESCOMASTEK
>
>
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