The loop problem is not related to the rule format. I.e., if you have a loop in the decision table, you will have it on drl rules too, etc.
   There are mechanisms to avoid undesired loops, like no-loop and lock-on-active rule attributes, but usually it is just a matter of refining your rule declarations.

    Regarding the update() call, once you understand how it works, you may decide not to use it in some cases, but the original description for your problem clearly states what happens when update is not used properly.

   []s
   Edson

2008/2/17, Massi Gmail <mmquelo@gmail.com>:
 
Morning Edson!
 
Thank You for your reply!
 
I have already added the "Update()".
 
I added it in the ACTION column following  the column
where i set the "upronto" field.
 
But then it produces an infinite Loop!
 
It updates the upronto and the rule fires again....
so the infinite loop starts!
 
Should I avoid using decision tables?
 
Should I use a sequential algorithm instead of rete??
 
Should I clear the agenda?
 
So far I have never seen any .xls decision table
using the update()!
 
Every time I use the update in a decision table
I get back a loop.
 
Bye bye
 
Massi
 
----- Original Message -----
Newsgroups: gmane.comp.java.drools.user
Sent: Sunday, February 17, 2008 9:55 AM
Subject: Re: Re: You must see this,guys...new bug? defining rules saturday night made me mad?


    I don't know about your ruleflow question, but you seems to be missing an update() call that will cause exactly the behavior you are describing:

when

cw: ContractWrapper(mycontract.serviceDetail.pronto == "Y", mycontract.serviceDetail.pronto == "Y")

then

cw.setUpronto(Pronto.Y);

update( cw ); // <---------

System.out.println("PS1"+cw.getMycontract().getId());

end


    Without the update call, the LHS of the rules will never see the attribute change. This is expected behavior.
    The RHS of the rules always see the actual attribute values though, since shadow proxies are only used in LHS.

    []s
    Edson

2008/2/16, mmquelo@gmail.com <mmquelo@gmail.com>:
 
I think I got the point....
 
This is the rule (table generated) which sets the "upronto" field.
 
(It should have been fired in a previous ruleflow-node)
 

package com.rules.ConsolidateData;

#generated from Decision Table

import com.engine.wrappers.ContractWrapper;

import com.engine.enums.Pronto;

#From row number: 13

rule "Pronto_13"

(RULEFLOW GROUP IS MISSING!!!!!)

when

cw: ContractWrapper(mycontract.serviceDetail.pronto == "Y", mycontract.serviceDetail.pronto == "Y")

then

cw.setUpronto(Pronto.Y);

System.out.println("PS1"+cw.getMycontract().getId());

end

I think I DEFINED "THE RULEFLOW-GROUP" IN THE WRONG WAY  in the .xls table!!!
 
So, I think... the Pronto_13 rule has been fired after the ScorePronto rule.
 
I tell you how I defined it....
 
In the same column where I have "Ruleset", "Import" and "Variables" I put "RULEFLOW-GROUP" as well...it is as follows:
 
|Ruleset                       | ...                                          |
|Import                         | ...import ... ContractWrapper...|
|Variables                     | ...                                         |
|RULEFLOW-GROUP   | Scoring                                  |           <--- HERE!
 
 
Is it correct?
 
I thought this is what was meant in http://jira.jboss.com/jira/browse/JBRULES-1077
 
In case this were not the problem I really would not know what to do.... now I go to sleep... here in rome is quite late!
 
I hope tomorrow to work it out.
 
Thank You for your Help Edson!
 
Buona notte.
 
Massi

   Need to see the full test case to be able to understand if it is a bug or not, because the expression in the LHS is using the ShadowProxy, while the one in the RHS is not... so, it may be a bug or it may not... depends when and how you are setting the upronto field.

   []s
   Edson


2008/2/16, mmquelo@gmail.com <mmquelo@gmail.com>:
 
Look at this....
 
I have got a "ContractWrapper" fact inserted into WM.
 
It wraps a "Contract" object and some "enums" fields.
 
One of these fields is "upronto":
 

public

class ContractWrapper extends BaseOmPersistentWithAssignedId{

Contract

mycontract=null;

...

Pronto upronto = null;

...

<getters and setters....>

...

}

 
 
"upronto" is an insance of a "Pronto" java enum:
 

public

enum Pronto {

N

,

UNKNOWN

,

Y

;

}

 
"Pronto" can be : (Y, N, UNKNOWN)
 
Here is the rule which reasons over this enum:
(ofcourse I have got a Request into WM as well)
 
rule "ScorePronto"
dialect "mvel"
ruleflow-group "Scoring"
 when
     $r:Request( $mc:mainContract != null )
     $cw_p:ContractWrapper($c_w_p:mycontract == $mc, eval(upronto != Pronto.Y))
 then 
     System.out.println("Test Result: "+($cw_p.upronto == Pronto.Y))  
end
 
Any guesses for the output???
 
Well....
 
Test Result: true
 
HOW COMES???????????????????
 
I mean ... the test "eval(upronto != Pronto.Y)" returned "true".... It means that the rule
engine sees upronto <> Pronto.Y!, doesn't it??!!!!
 
So... why do I get "upronto == Pronto.Y" in the RHS????
 
What the.........&$%%&()%%$/%£....sorry....but having these
kind of problems during saturday night is not so pleaseant! 
 
T-T
 
I really hope you can help me with a  workaround to this issue.
 
Bye
 
Massi
 
 

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--
  Edson Tirelli
  JBoss Drools Core Development
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com

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rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users


_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users




--
  Edson Tirelli
  JBoss Drools Core Development
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users


_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users




--
  Edson Tirelli
  JBoss Drools Core Development
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com