6:18 p.m.
Hello
I created a ruleflow like this one:
http://i41.tinypic.com/2efmctx.jpg
And this is the rule package (rules are demonstrative only and one per group, but later on
more will be added in each group.
package package1
#list any import classes here.
...
#declare any global variables here
...
rule "start workflow"
salience 1000
when
eval (true)
then
System.out.println("matchata regola start");
drools.getWorkingMemory().startProcess("rf_main");
end
rule "Preferenza"
ruleflow-group "modParams"
when
nRound : NumeroRound( n : numeroRound)
pw : PreferenceWrapper(round == n ,pref : preference)
then
pw.setRound(n+1);
System.out.println("matchata regola pref");
System.out.println("preferenza: "+ pref.getName());
end
rule "query for results"
ruleflow-group "queryResult"
when
#conditions
nRound : NumeroRound(n : numeroRound)
then
#actions
System.out.println("matchata regola query");
...
end
rule "fasulla"
ruleflow-group "fasullo"
when
eval (true)
then
#actions
System.out.println("sei fasullo1");
end
In the ruleflow, the join node is XOR type.
Split node is XOR type and checks with the object NumeroRound and the variable numeroRound
which is an int. If it is big enough it exits, else continue to "fasullo" group
the issue is that the matching goes through "modParams" group, then
"queryResult" group, then "fasullo" group, but after that it freezes,
instead of going angain in group "modParams". Note that it doesnt finish the
execution, it waits something.
What is wrong with this ruleflow?
thanks in advance,
Alessandro Terrinoni
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2:51 p.m.
Alessandro,
Not sure what the XOR constraint looks like exactly, but if you are
using a rule constraint and it is referencing the NumeroRound object in
working memory, are you notifying the engine when this number is changed
(as I didn't see any update statements in your rules).
To figure out what is going on exactly, I recommend adding an audit log
listener to your session (either to console or to file which can then be
visualized in eclipse as a tree). This will give you a clear idea on
which nodes have been triggered and why. For more information see the
docs here:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
Kris
Quoting Alessandro Terrinoni <aleterrinoni(a)hotmail.com>:
Hello
I created a ruleflow like this one:
http://i41.tinypic.com/2efmctx.jpg
And this is the rule package (rules are demonstrative only and one
per group, but later on more will be added in each group.
package package1
#list any import classes here.
...
#declare any global variables here
...
rule "start workflow"
salience 1000
when
eval (true)
then
System.out.println("matchata regola start");
drools.getWorkingMemory().startProcess("rf_main");
end
rule "Preferenza"
ruleflow-group "modParams"
when
nRound : NumeroRound( n : numeroRound)
pw : PreferenceWrapper(round == n ,pref : preference)
then
pw.setRound(n+1);
System.out.println("matchata regola pref");
System.out.println("preferenza: "+ pref.getName());
end
rule "query for results"
ruleflow-group "queryResult"
when
#conditions
nRound : NumeroRound(n : numeroRound)
then
#actions
System.out.println("matchata regola query");
...
end
rule "fasulla"
ruleflow-group "fasullo"
when
eval (true)
then
#actions
System.out.println("sei fasullo1");
end
In the ruleflow, the join node is XOR type.
Split node is XOR type and checks with the object NumeroRound and the
variable numeroRound which is an int. If it is big enough it exits,
else continue to "fasullo" group
the issue is that the matching goes through "modParams" group, then
"queryResult" group, then "fasullo" group, but after that it
freezes,
instead of going angain in group "modParams". Note that it doesnt
finish the execution, it waits something.
What is wrong with this ruleflow?
thanks in advance,
Alessandro Terrinoni
_________________________________________________________________
Chiama gratis dal tuo PC! Parla su Messenger
http://clk.atdmt.com/GBL/go/140630369/direct/01/
3:53 p.m.
Kris,
thanks for the answer, i found that the problem were some missing updates.
But now there's another issue:
In a node of the flow should take place an action also on NumeroRound, everytime just
once, incrementing its field by one.
The problem is: with the attribute "no-loop true", the flow freezes in that
flow-group, even if the update statement is present.
Obviously, without the attribute "no-loop true" it goes loop on the rule.
rule "query for results"
no-loop true
ruleflow-group "queryResult"
when
#conditions
nRound : NumeroRound(n : numeroRound)
then
#actions
risultati.addAll(queryManager.getEnititesFromRequest(request));
nRound.setNumeroRound(n+1);
update( nRound );
end
The split and the join works fine now, as the modParams group evaluates twice. The problem
seems to be in the queryResult node that contains only the rule above. I will try to add
the audit logger to provide more informations.
Maybe, since the node queryResult have to take everytime one and only one action, i could
replace the node with an Action node. But if i do, i dont think i could be be able to
modify the field in the NumeroRound fact, could I? (note i need it as a fact as i use it
also in some LHS of other rules..)
Date: Thu, 9 Apr 2009 14:51:49 +0200
From: Kris.Verlaenen(a)cs.kuleuven.be
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Ruleflow loop until condition
Alessandro,
Not sure what the XOR constraint looks like exactly, but if you are
using a rule constraint and it is referencing the NumeroRound object in
working memory, are you notifying the engine when this number is changed
(as I didn't see any update statements in your rules).
To figure out what is going on exactly, I recommend adding an audit log
listener to your session (either to console or to file which can then be
visualized in eclipse as a tree). This will give you a clear idea on
which nodes have been triggered and why. For more information see the
docs here:
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/t...
Kris
Quoting Alessandro Terrinoni <aleterrinoni(a)hotmail.com>:
>
> Hello
>
> I created a ruleflow like this one:
> http://i41.tinypic.com/2efmctx.jpg
>
> And this is the rule package (rules are demonstrative only and one
> per group, but later on more will be added in each group.
>
> package package1
>
> #list any import classes here.
> ...
>
>
> #declare any global variables here
> ...
>
>
> rule "start workflow"
> salience 1000
> when
> eval (true)
> then
> System.out.println("matchata regola start");
> drools.getWorkingMemory().startProcess("rf_main");
>
> end
>
> rule "Preferenza"
> ruleflow-group "modParams"
> when
> nRound : NumeroRound( n : numeroRound)
> pw : PreferenceWrapper(round == n ,pref : preference)
>
> then
> pw.setRound(n+1);
> System.out.println("matchata regola pref");
> System.out.println("preferenza: "+ pref.getName());
>
> end
>
> rule "query for results"
>
> ruleflow-group "queryResult"
> when
> #conditions
> nRound : NumeroRound(n : numeroRound)
> then
> #actions
> System.out.println("matchata regola query");
> ...
> end
>
> rule "fasulla"
>
> ruleflow-group "fasullo"
> when
> eval (true)
> then
> #actions
> System.out.println("sei fasullo1");
>
> end
>
>
>
> In the ruleflow, the join node is XOR type.
> Split node is XOR type and checks with the object NumeroRound and the
> variable numeroRound which is an int. If it is big enough it exits,
> else continue to "fasullo" group
>
> the issue is that the matching goes through "modParams" group, then
> "queryResult" group, then "fasullo" group, but after that it
freezes,
> instead of going angain in group "modParams". Note that it doesnt
> finish the execution, it waits something.
>
> What is wrong with this ruleflow?
>
> thanks in advance,
> Alessandro Terrinoni
>
> _________________________________________________________________
> Chiama gratis dal tuo PC! Parla su Messenger
> http://clk.atdmt.com/GBL/go/140630369/direct/01/
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3 comments
3 participants
participants (3)
-
Alessandro Terrinoni -
Kris Verlaenen -
nik_sharma75＠hotmail.com