Am I correct in thinking you want to calculate the sum of groups of ABC.C's
differentiated by ABC.A?
An activation for the third rule is being created each time an ABC is
inserted into WM. First with one ABC, then with two and so fourth.
What you want is to ensure that "processing" for rules 1 and 2 complete
first and then rule 3 works on the results in WM. This can be achieved with
salience on the three rules; lower on rule 3 than 1 and 2 to ensure it's
activations execute after rules 1 and 2 are finished operating on all facts.
2010/9/17 <Ritesh.khot(a)sungard.com>
Hi,
Thanks for the reply..
--The sequential option is set to *false*
--Using *StatelessKnowledgeSession*
* *
Summary what I intend to achieve,
1. In first rule, I am doing calculation on three different columns and
putting it in *sumOfThree *property of ActualSum and inserting it in
WM. Let say I have four facts.
2. In Second Rule, I am inserting distinct audit trail in DistinctAT.
Lets say I have two distinct AT.
3. In Third Rule, I am assuming 4 Facts of ActualSum and 2 Facts of
DistinctAT already available in WM. Now I want to get sum of sumOfThree
group by AT, which I am trying to get using Accumulate function.
*OutPut I am getting:*
AT :1001
Done!
Done Main Rule, total :-40.0
AT :1000
Done!
Done Main Rule, total :210.0
AT :1000
Done Main Rule, total :160.0
AT :1000
Done Main Rule, total :260.0
INFO: Number of generated exceptions 4
Here I see the last rule is getting fired every time ActualSum fact is
inserted in first rule. And as the facts are available one by one, these are
available to Accumulate function used in third Rule. Actually I am expecting
only two exceptions one for AT:1001 and AT:1000 with total of -40 and 260
resp.
Please advise.
P.S. Please ignore “$lfna_SEI and $r_SE”.
Thanks,
Ritesh
------------------------------
*From:* rules-users-bounces(a)lists.jboss.org [mailto:
rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Michael Anstis
*Sent:* Friday, September 17, 2010 12:43 PM
*To:* Rules Users List
*Subject:* Re: [rules-users] How to activate/deactivate a rule.
Have you tried running what you have?
I'd expect it to give the result you expect already (other than throwing an
error because $lfna_SEI and $r_SE are not bound in the last rule and
assuming chkRuleExpre is constant over time). Rules do not normally execute
in any sequential order (unless you explicitly make them so). As the facts
are inserted into WM they are matched against your rules and activations
scheduled. When all facts are inserted into WM and you call fireAllRules the
activations are played out and "truth maintenance" ensures the
"result" of
their firing is consistent with the facts in WM (either inserted by rules or
the programmer). This is in essence "how inference engines" work.
After you've called fireAllRules (and assuming you have a stateful session)
you insert more ABC's then you'd have to expect the last rule to be
re-evaluated - following another call to fireAllRules. So in part when rule
3 ultimately gives the "correct" answer depends upon when you stop inserting
ABC's.
On 17 September 2010 07:35, Ritesh <ritesh.khot(a)sungard.com> wrote:
Hi,
I have 3 rules in my drl file and want the last one should get fired only
after all the facts in rule1 and rule2 gets inserted in working memory.
Please see below code for more understanding. Please suggest.
Thanks
declare DistinctAT
d_auditT : String
end
declare ActualSum
auditT : String
sumOfThree : BigDecimal
end
rule "insert combined sum"
dialect 'java'
when
ABC( $a:A, $b:B, $c:C )
then
BigDecimal actSum = $c.multiply(0.13);
ActualSum $as = new ActualSum();
$as.setAuditT($a);
$as.setSumOfThree(actSum);
insert($as);
System.out.println("AT :" + $movAuditT);
end
rule "insert distinct AT"
dialect 'java'
when
$a : ActualSum( $AT : auditT )
not DistinctAT( d_auditT == $AT )
then
DistinctAT $disAT = new DistinctAT();
$disAT.setD_auditT($AT);
insert($disAT);
System.out.println("Done!");
end
rule "Get Sum Group by AT"
dialect 'java'
when
DistinctAT( $dAT: d_auditT )
$total : Double()
from accumulate( ActualSum( auditT == $dAT, $actSum_Main : sumOfThree ),
sum( $actSum_Main ) )
eval(
chkRuleExpre( $total,$lfna_SEI,$r_SEI )
)
then
System.out.println("Done Main Rule, total :" + $total);
end
--
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