Hi,

This is perhaps not the performance hit you think it is as the rules are evaluated as they are loaded. The Rete algorithm will evaluate that the rule is not null and trigger.

Another consideration is that you may need to use a flatter fact-model if you're drilling down with 'from' operators and needing to trap for nulls.

Aside from that, if you use Rule Flow Groups and a Rule Flow as Michael Anstis suggested:You can use a Split Connector to branch around that section of ruleflow, and a Join Connector to continue, connected either to the next ruleflow step, or to a Stop.

Regards,
-Trav

Travis Smith
Analyst Programmer
Development Centre
BNZ

DDI: +644 4746356 (Or Ext 76356)




Sathya Prakash <prakashagarval@gmail.com>
Sent by: rules-users-bounces@lists.jboss.org

17/02/2011 11:51 a.m.
Please respond to
Rules Users List <rules-users@lists.jboss.org>

To
Mauricio Salatino <salaboy@gmail.com>, michael.anstis@gmail.com
cc
Rules Users List <rules-users@lists.jboss.org>
Subject
Re: [rules-users] how to stop rule execution





I got great Idea by this discussion.

If there is no way of stopping rules then I can do this null condition check before executing rules. Adding one action in JBoss ESB will solve problem.

Please suggest me.

Many Thanks in advance.


Regards,
Sathya Prakash.
On Thu, Feb 17, 2011 at 2:39 AM, Sathya Prakash <prakashagarval@gmail.com> wrote:
Thanks for your suggestion..

But let us assume i have 100 rules based on single response. When response is null then if i am doing null check in all rules then it degrades the performance.  My application hits are  million per day. if 1 % percent fails think about the impact.

Regards,
Sathya Prakash.

On Thu, Feb 17, 2011 at 2:26 AM, Mauricio Salatino <salaboy@gmail.com> wrote:
you can do something like:
rule "Error Check"
salience 100

when
error condition check
then
System.Out.Println("Response has errors");
XXXXXXXXXXXXXXXXXXXXXXXX to exit from rule execution
insert(Stop())
end


rule "Rule-01"
salience 99
when
not(Stop())
repsonse.getxx()

then 

end.


2011/2/16 Sathya Prakash <prakashagarval@gmail.com>
Hi,

How to stop rule execution in  technical rule, 
Example 

rule "Error Check"
salience 100

when
error condition check
then
System.Out.Println("Response has errors");
XXXXXXXXXXXXXXXXXXXXXXXX to exit from rule execution
end


rule "Rule-01"
salience 99
when
repsonse.getxx()

then 

end.

if first rule then part executed means the response is error hence we should not execute second.
Is there any way to exit rule execution.


Regards,
Sathya Prakash.

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--
Cheers,
Sathya Prakash.
సత్య ప్రకాష్.




--
Cheers,
Sathya Prakash.
సత్య ప్రకాష్.
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