10:19 a.m.
Hi there,
I'm having some trouble implementing the desired workflow of rule firing in an
application using drools expert. I've read the thread about the difference between
ruleflow groups and agenda groups, but it is still unclear to me how to achieve what i
need.
What i intend to have is the ability to fire a specific set of rules according to the
object i'm inserting into the ksession.
I do not want to use agenda-groups because it stacks all the agenda groups declared on the
rule file (as far as i understand) and therefore it may fire activations i do not want to
be fired. Instead, i want to isolate them completely. I tried using ruleflow groups for
this, but i cannot find a way to activate a specific group programmatically, before
calling fireAllRules(), the way i can with agenda-groups (setFocus() method).
That being said, i'm asking for help in trying to use either one of ruleflow/agenda
groups or even both in order to get things working the way i described.
Thanks in advance,
_ miguel
10:45 a.m.
Hi miguel,
Did you try creating a new Drools Flow process with Rule Tasks inside it to
isolate each specific set of rules.
Then you can insert the facts into the working memory, start the process and
the rules will be executed secuencially.
You need to remember also that, if the rules are activated but the agenda
group is without focus, the rules will never fire.
2010/5/4 Miguel Machado <mls.machado(a)gmail.com>
Hi there,
I'm having some trouble implementing the desired workflow of rule firing in
an application using drools expert. I've read the thread<http://bit.ly/bKMRSq>
about
the difference between ruleflow groups and agenda groups, but it is still
unclear to me how to achieve what i need.
What i intend to have is the ability to fire a specific set of rules
according to the object i'm inserting into the ksession.
I do not want to use agenda-groups because it stacks all the agenda groups
declared on the rule file (as far as i understand) and therefore it may fire
activations i do not want to be fired. Instead, i want to isolate them
completely. I tried using ruleflow groups for this, but i cannot find a way
to activate a specific group programmatically, before calling
fireAllRules(), the way i can with agenda-groups (setFocus() method).
That being said, i'm asking for help in trying to use either one of
ruleflow/agenda groups or even both in order to get things working the way i
described.
Thanks in advance,
_ miguel
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- Salatino "Salaboy" Mauricio -
10:46 a.m.
I've been using agenda groups without any trouble for a similar problem, doing
setFocus( ... );
insert( ... );... insert( ... );
fireAllRules();
repeatedly.
You don't have to be afraid of the focus stack growing indefinitely:You control
the "push" (setFocus()), and if an agenda group's activations are all gone,
the
group is automatically popped from the stack.
-W
2010/5/4 Miguel Machado <mls.machado(a)gmail.com>:
Hi there,
I'm having some trouble implementing the desired workflow of rule firing in
an application using drools expert. I've read the thread about the
difference between ruleflow groups and agenda groups, but it is still
unclear to me how to achieve what i need.
What i intend to have is the ability to fire a specific set of rules
according to the object i'm inserting into the ksession.
I do not want to use agenda-groups because it stacks all the agenda groups
declared on the rule file (as far as i understand) and therefore it may fire
activations i do not want to be fired. Instead, i want to isolate them
completely. I tried using ruleflow groups for this, but i cannot find a way
to activate a specific group programmatically, before calling
fireAllRules(), the way i can with agenda-groups (setFocus() method).
That being said, i'm asking for help in trying to use either one of
ruleflow/agenda groups or even both in order to get things working the way i
described.
Thanks in advance,
_ miguel
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5:18 p.m.
Hi,
First of all, thank you both for your answers.
@mauricio:
I'm currently not using drools flow, only expert, so i'm not very familiar
with the approach you suggested. Isn't it possible to achieve this goal just
by using drools expert?
@Wolfgang:
My problem is that i cannot have the different rule groups stacked. I may do
as you suggested, but i'll have rules firing from other agenda-groups after
the first agenda-group activations are all gone (because they go into the
stack as well, right?). What i'm looking for is a way to isolate the
execution and just fire the rules within a specific set (aka just one
group). Does this make any sense?
Thank you for your support. I appreciate all the help i can get.
_ miguel
On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com>wrote:
I've been using agenda groups without any trouble for a similar
problem,
doing
setFocus( ... );
insert( ... );... insert( ... );
fireAllRules();
repeatedly.
You don't have to be afraid of the focus stack growing indefinitely:You
control
the "push" (setFocus()), and if an agenda group's activations are all
gone,
the
group is automatically popped from the stack.
-W
2010/5/4 Miguel Machado <mls.machado(a)gmail.com>:
> Hi there,
> I'm having some trouble implementing the desired workflow of rule firing
in
> an application using drools expert. I've read the thread about the
> difference between ruleflow groups and agenda groups, but it is still
> unclear to me how to achieve what i need.
> What i intend to have is the ability to fire a specific set of rules
> according to the object i'm inserting into the ksession.
> I do not want to use agenda-groups because it stacks all the agenda
groups
> declared on the rule file (as far as i understand) and therefore it may
fire
> activations i do not want to be fired. Instead, i want to isolate them
> completely. I tried using ruleflow groups for this, but i cannot find a
way
> to activate a specific group programmatically, before calling
> fireAllRules(), the way i can with agenda-groups (setFocus() method).
> That being said, i'm asking for help in trying to use either one of
> ruleflow/agenda groups or even both in order to get things working the
way i
> described.
> Thanks in advance,
> _ miguel
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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12:40 a.m.
2010/5/5 miguel machado <mls.machado(a)gmail.com>:
Hi,
First of all, thank you both for your answers.
@Wolfgang:
My problem is that i cannot have the different rule groups stacked. I may do
as you suggested, but i'll have rules firing from other agenda-groups after
the first agenda-group activations are all gone (because they go into the
stack as well, right?).
No, no, no! Nothing goes on the stack unless you setFocus()!
What i'm looking for is a way to isolate the
execution and just fire the rules within a specific set (aka just
one
group). Does this make any sense?
This is *exactly* what my sketchy statement sequence does, in
an existing application.
-W
Thank you for your support. I appreciate all the help i can get.
_ miguel
On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
wrote:
>
> I've been using agenda groups without any trouble for a similar problem,
> doing
> setFocus( ... );
> insert( ... );... insert( ... );
> fireAllRules();
> repeatedly.
>
> You don't have to be afraid of the focus stack growing indefinitely:You
> control
> the "push" (setFocus()), and if an agenda group's activations are all
> gone, the
> group is automatically popped from the stack.
>
> -W
>
> 2010/5/4 Miguel Machado <mls.machado(a)gmail.com>:
> > Hi there,
> > I'm having some trouble implementing the desired workflow of rule firing
> > in
> > an application using drools expert. I've read the thread about the
> > difference between ruleflow groups and agenda groups, but it is still
> > unclear to me how to achieve what i need.
> > What i intend to have is the ability to fire a specific set of rules
> > according to the object i'm inserting into the ksession.
> > I do not want to use agenda-groups because it stacks all the agenda
> > groups
> > declared on the rule file (as far as i understand) and therefore it may
> > fire
> > activations i do not want to be fired. Instead, i want to isolate them
> > completely. I tried using ruleflow groups for this, but i cannot find a
> > way
> > to activate a specific group programmatically, before calling
> > fireAllRules(), the way i can with agenda-groups (setFocus() method).
> > That being said, i'm asking for help in trying to use either one of
> > ruleflow/agenda groups or even both in order to get things working the
> > way i
> > described.
> > Thanks in advance,
> > _ miguel
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
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2:32 a.m.
Hi again,
Thank you for clearing that up. I didn't think it worked that way because
i've tried it before and it didn't work. Anyway, according to what you're
saying...
* this is the stack as soon as i insert my objects: | MAIN |
* this is the stack as soon as i setFocus on a specific agenda-group: |
FOCUSED_GROUP | MAIN | (from left to right)
* as soon as all activations from FOCUSED_GROUP fire, that agenda-group is
popped out of the stack and the rule engine fires the remaining activations
from MAIN
Is this the way it works? I've tried this before with no success. I get
rules firing from agenda-groups that *are not focused before* (besides MAIN,
of course). Maybe this has something to do with the rules being declared in
XML? Or some kind of bug?
Thank you.
_ miguel
On Wed, May 5, 2010 at 6:40 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>wrote:
> @Wolfgang:
> My problem is that i cannot have the different rule groups stacked. I may
do
> as you suggested, but i'll have rules firing from other agenda-groups
after
> the first agenda-group activations are all gone (because they go into the
> stack as well, right?).
No, no, no! Nothing goes on the stack unless you setFocus()!
What i'm looking for is a way to isolate the
> execution and just fire the rules within a specific set (aka just one
> group). Does this make any sense?
This is *exactly* what my sketchy statement sequence does, in
an existing application.
-W
> Thank you for your support. I appreciate all the help i can get.
> _ miguel
>
>
>
> On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
> wrote:
>>
>> I've been using agenda groups without any trouble for a similar problem,
>> doing
>> setFocus( ... );
>> insert( ... );... insert( ... );
>> fireAllRules();
>> repeatedly.
>>
>> You don't have to be afraid of the focus stack growing indefinitely:You
>> control
>> the "push" (setFocus()), and if an agenda group's activations are
all
>> gone, the
>> group is automatically popped from the stack.
>>
>> -W
>>
>> 2010/5/4 Miguel Machado <mls.machado(a)gmail.com>:
>> > Hi there,
>> > I'm having some trouble implementing the desired workflow of rule
firing
>> > in
>> > an application using drools expert. I've read the thread about the
>> > difference between ruleflow groups and agenda groups, but it is still
>> > unclear to me how to achieve what i need.
>> > What i intend to have is the ability to fire a specific set of rules
>> > according to the object i'm inserting into the ksession.
>> > I do not want to use agenda-groups because it stacks all the agenda
>> > groups
>> > declared on the rule file (as far as i understand) and therefore it
may
>> > fire
>> > activations i do not want to be fired. Instead, i want to isolate them
>> > completely. I tried using ruleflow groups for this, but i cannot find
a
>> > way
>> > to activate a specific group programmatically, before calling
>> > fireAllRules(), the way i can with agenda-groups (setFocus() method).
>> > That being said, i'm asking for help in trying to use either one of
>> > ruleflow/agenda groups or even both in order to get things working the
>> > way i
>> > described.
>> > Thanks in advance,
>> > _ miguel
>> >
>> > _______________________________________________
>> > rules-users mailing list
>> > rules-users(a)lists.jboss.org
>> > https://lists.jboss.org/mailman/listinfo/rules-users
>> >
>> >
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users(a)lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
> --
> "To understand what is recursion you must first understand recursion"
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
_______________________________________________
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"To understand what is recursion you must first understand recursion"
3:11 a.m.
2010/5/5 miguel machado <mls.machado(a)gmail.com>:
Hi again,
Thank you for clearing that up. I didn't think it worked that way because
i've tried it before and it didn't work. Anyway, according to what you're
saying...
* this is the stack as soon as i insert my objects: | MAIN |
* this is the stack as soon as i setFocus on a specific agenda-group: |
FOCUSED_GROUP | MAIN | (from left to right)
* as soon as all activations from FOCUSED_GROUP fire, that agenda-group is
popped out of the stack and the rule engine fires the remaining activations
from MAIN
Is this the way it works? I've tried this before with no success. I get
rules firing from agenda-groups that *are not focused before* (besides MAIN,
of course). Maybe this has something to do with the rules being declared in
XML? Or some kind of bug?
If you don't have auto-focus, rules from other agenda groups should not fire.
XML should not matter. A bug might be possible, e.g., due to misinterpretation
of the rules in XML.
-W
Thank you.
_ miguel
On Wed, May 5, 2010 at 6:40 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
wrote:
>
> > @Wolfgang:
> > My problem is that i cannot have the different rule groups stacked. I
> > may do
> > as you suggested, but i'll have rules firing from other agenda-groups
> > after
> > the first agenda-group activations are all gone (because they go into
> > the
> > stack as well, right?).
>
> No, no, no! Nothing goes on the stack unless you setFocus()!
>
> What i'm looking for is a way to isolate the
> > execution and just fire the rules within a specific set (aka just one
> > group). Does this make any sense?
>
> This is *exactly* what my sketchy statement sequence does, in
> an existing application.
> -W
>
> > Thank you for your support. I appreciate all the help i can get.
> > _ miguel
> >
> >
> >
> > On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
> > wrote:
> >>
> >> I've been using agenda groups without any trouble for a similar
> >> problem,
> >> doing
> >> setFocus( ... );
> >> insert( ... );... insert( ... );
> >> fireAllRules();
> >> repeatedly.
> >>
> >> You don't have to be afraid of the focus stack growing indefinitely:You
> >> control
> >> the "push" (setFocus()), and if an agenda group's activations
are all
> >> gone, the
> >> group is automatically popped from the stack.
> >>
> >> -W
> >>
> >> 2010/5/4 Miguel Machado <mls.machado(a)gmail.com>:
> >> > Hi there,
> >> > I'm having some trouble implementing the desired workflow of rule
> >> > firing
> >> > in
> >> > an application using drools expert. I've read the thread about the
> >> > difference between ruleflow groups and agenda groups, but it is still
> >> > unclear to me how to achieve what i need.
> >> > What i intend to have is the ability to fire a specific set of rules
> >> > according to the object i'm inserting into the ksession.
> >> > I do not want to use agenda-groups because it stacks all the agenda
> >> > groups
> >> > declared on the rule file (as far as i understand) and therefore it
> >> > may
> >> > fire
> >> > activations i do not want to be fired. Instead, i want to isolate
> >> > them
> >> > completely. I tried using ruleflow groups for this, but i cannot find
> >> > a
> >> > way
> >> > to activate a specific group programmatically, before calling
> >> > fireAllRules(), the way i can with agenda-groups (setFocus() method).
> >> > That being said, i'm asking for help in trying to use either one
of
> >> > ruleflow/agenda groups or even both in order to get things working
> >> > the
> >> > way i
> >> > described.
> >> > Thanks in advance,
> >> > _ miguel
> >> >
> >> > _______________________________________________
> >> > rules-users mailing list
> >> > rules-users(a)lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >> >
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users(a)lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
> > --
> > "To understand what is recursion you must first understand recursion"
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
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3:38 a.m.
Hi,
Yeah, i think this might be a bug indeed. I just tried converting to DRL
using the "dumper" and the agenda-group item doesn't show up in the
generated DRL file. It is possible that that this tag isn't being
interpreted for the same reason it isn't being converted into the DRL
format. Can someone please confirm this?
Anyway, if this doesn't work.. is there any kind of workaround? Maybe using
ruleflow-group's or any other technique?
Thank you.
_ miguel
On Wed, May 5, 2010 at 9:11 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>wrote:
If you don't have auto-focus, rules from other agenda groups should not
fire.
XML should not matter. A bug might be possible, e.g., due to
misinterpretation
of the rules in XML.
-W
--
"To understand what is recursion you must first understand recursion"
4:01 a.m.
How did you specify the agenda group in the XML? There aren't much
checks being done in XML handling, so it's easy to slip up. Here's how
I interpret the XML schema:
<rule name="myrule">
<rule-attribute name="agenda-group" value="group42"/>
...
-W
2010/5/5 miguel machado <mls.machado(a)gmail.com>:
Hi,
Yeah, i think this might be a bug indeed. I just tried converting to DRL
using the "dumper" and the agenda-group item doesn't show up in the
generated DRL file. It is possible that that this tag isn't being
interpreted for the same reason it isn't being converted into the DRL
format. Can someone please confirm this?
Anyway, if this doesn't work.. is there any kind of workaround? Maybe using
ruleflow-group's or any other technique?
Thank you.
_ miguel
On Wed, May 5, 2010 at 9:11 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
wrote:
>
> If you don't have auto-focus, rules from other agenda groups should not
> fire.
> XML should not matter. A bug might be possible, e.g., due to
> misinterpretation
> of the rules in XML.
> -W
>
--
"To understand what is recursion you must first understand recursion"
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2:32 a.m.
oh!
I'm so sorry... typos in XML are impossible to detect :(
Again, thank you so much for your help. I'll correct this and will use the
agenda-groups the way you suggested.
_ miguel
On Wed, May 5, 2010 at 10:01 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>wrote:
How did you specify the agenda group in the XML? There aren't
much
checks being done in XML handling, so it's easy to slip up. Here's how
I interpret the XML schema:
<rule name="myrule">
<rule-attribute name="agenda-group" value="group42"/>
...
-W
2010/5/5 miguel machado <mls.machado(a)gmail.com>:
> Hi,
> Yeah, i think this might be a bug indeed. I just tried converting to DRL
> using the "dumper" and the agenda-group item doesn't show up in the
> generated DRL file. It is possible that that this tag isn't being
> interpreted for the same reason it isn't being converted into the DRL
> format. Can someone please confirm this?
> Anyway, if this doesn't work.. is there any kind of workaround? Maybe
using
> ruleflow-group's or any other technique?
> Thank you.
> _ miguel
>
>
> On Wed, May 5, 2010 at 9:11 AM, Wolfgang Laun <wolfgang.laun(a)gmail.com>
> wrote:
>>
>> If you don't have auto-focus, rules from other agenda groups should not
>> fire.
>> XML should not matter. A bug might be possible, e.g., due to
>> misinterpretation
>> of the rules in XML.
>> -W
>>
>
>
> --
> "To understand what is recursion you must first understand recursion"
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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"To understand what is recursion you must first understand recursion"
12:41 p.m.
You could manually activate and deactivate ruleflow groups using
workingMemory.getAgenda().[de]activateRuleflowGroup(name).
workingMemory.getAgenda().[de]activateRuleflowGroup(name).
session.fireAllRules();
http://drools-java-rules-engine.46999.n3.nabble.com/Agenda-group-doesn-t-...
Source
--
View this message in context:
http://drools-java-rules-engine.46999.n3.nabble.com/expert-usage-of-rulef...
Sent from the Drools - User mailing list archive at Nabble.com.
1:24 p.m.
if you use the new api's (5.x StatefulKnowledgeSession instead of
workingMemory) you don't have that methods exposed.
2010/5/4 vasilievip <vasilievip(a)ukr.net>
You could manually activate and deactivate ruleflow groups using
workingMemory.getAgenda().[de]activateRuleflowGroup(name).
workingMemory.getAgenda().[de]activateRuleflowGroup(name).
session.fireAllRules();
Source<http://drools-java-rules-engine.46999.n3.nabble.com/Agenda-grou...
------------------------------
View this message in context: Re: expert: usage of
ruleflow-groups<http://drools-java-rules-engine.46999.n3.nabble.com/ex...
Sent from the Drools - User mailing list
archive<http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Use...
Nabble.com.
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- Salatino "Salaboy" Mauricio -
5:33 p.m.
Exactly! That's precisely why i'm trying to find a workaround. I have no way
to activate a specific set of rules except for stacking up activations using
agenda-groups.
Any other suggestions?
Thank you.
2010/5/4 Mauricio Salatino <salaboy(a)gmail.com>
if you use the new api's (5.x StatefulKnowledgeSession instead
of
workingMemory) you don't have that methods exposed.
2010/5/4 vasilievip <vasilievip(a)ukr.net>
> You could manually activate and deactivate ruleflow groups using
> workingMemory.getAgenda().[de]activateRuleflowGroup(name).
> workingMemory.getAgenda().[de]activateRuleflowGroup(name).
> session.fireAllRules();
Source<http://drools-java-rules-engine.46999.n3.nabble.com/Agenda-grou...
> ------------------------------
> View this message in context: Re: expert: usage of
ruleflow-groups<http://drools-java-rules-engine.46999.n3.nabble.com/ex...
> Sent from the Drools - User mailing list
archive<http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Use...
Nabble.com.
>
> _______________________________________________
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> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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5318
days inactive
5320
days old
12 comments
5 participants
participants (5)
-
Mauricio Salatino -
miguel machado -
Miguel Machado
-
vasilievip -
Wolfgang Laun