Re: [rules-users] Lots of org.drools.common.ScheduledAgendaItem instances in memory
Hi, thank you for your response.
We use Drools 5.3.1 through Maven. When I invoke Drools, for each event I
receive I do the following:
ksession.insert(obj);
ksession.fireAllRules();
where ksession was previously created through
kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
ksession = kbase.newStatefulKnowledgeSession();
Yes, we do use timers. In one case we want to remove alarms that have been
cleared for more than an hour from the knowledgebase. We don't remove them
immediately because some alarms clear briefly and then come back. The rule
I've written to handle this situation is the following:
rule "Old Cleared Alarm?"
timer(int: 10m 10m)
salience -10
when
$a : Alarm(severity == "cleared")
then
double lastUpdate = minutesSince($a.getEventTime());
if(lastUpdate > 60) {
logger.debug("Alarm " + $a.getAlarmId() + " is old. Removing...");
retract($a);
}
end
Is there any other way to write this? I've found that I can't put the
minutesSince($a.getEventTime()) in the rule's when-clause.
Thank you,
Werner
On Tue, May 29, 2012 at 8:10 AM, Wolfgang Laun wrote:
> Just to make sure: How do you invoke the Engine? (I suppose you don't
> call with a limit for rule firings.)
>
> Unless it's a bug (BTW: your Drools version is?), it's due to one or
> more of your rules.
>
> Are you using timers? How?
>
> A detailed investigation of the whereabouts of these
> ScheduledAgendaItem objects might be done by investigating (via the
> unstable API) the Agenda and its various components.
>
> -W
>
> On 28/05/2012, Werner Stoop wrote:
> > Hi,
> >
> > We're using Drools with a StatefulKnowledgeSession to process events
> coming
> > from equipment in our network. The system draws conclusions about the
> state
> > of the equipment and writes those conclusions to a table in our
> > database. All our rules work as we expected and the system produces the
> > correct results.
> >
> > However, the memory usage of the JVM steadily goes up when the system
> runs
> > for extended periods of time until we start getting OutOfMemoryExceptions
> > and the server has to be restarted. This is in spite of the fact that the
> > fact count reported by
> > the StatefulKnowledgeSession.getFactCount() stays reasonably stable,
> > with around 30 000 facts (give or take) at any point in time.
> >
> > I have run the Eclipse Memory Analyzer tool (http://www.eclipse.org/mat/
> )
> > against heap dumps from the JVM several times now, and every time it
> > reports more and more instances
> > of org.drools.common.ScheduledAgendaItem referenced from one instance of
> > java.lang.Object[]
> >
> > To be concrete, since this morning the uptime is more than 112 hours in
> > total, during which the system has processed little over 2 000 000 events
> > from the network. It has 29 000 facts in the knowledge session, yet in
> the
> > heap dump we see 829 632 instances of
> > org.drools.common.ScheduledAgendaItem.
> >
> > What is the ScheduledAgendaItem for? Is there something wrong with my
> rules
> > that causes this many instances to be held? Is there something I should
> do
> > to release these instances or the Object[] holding on to them?
> >
> > Thanks,
> > Werner Stoop
> >
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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Re: [rules-users] Drools Fusion: expiration
So, from documentation, does the explicit expiration work when we don't use time operator. Thanks, Matteo Cusmai Il giorno 29/mag/2012 08:20, "Wolfgang Laun" ha scritto: > This quote is from the current version of "Fusion": > > "The above example declares an expiration offset of 30 minutes for > StockTick events. After that time, assuming no rule still needs the > event, the engine will expire and remove the event from the session > automatically." > > The catch is, as you may have noticed, the clause: "assuming no rule > still needs the event". Whatever this means... > > An educated guess for interpretation for "a rule needs an event" would > be "a partially or fully completed activation of a rule holds a > reference to an event". But, since the author hasn't added this > explanation, it might be something else. > > -W > > > On 28/05/2012, Matteo Cusmai wrote: > > Hi all, > > i have noticed a strange behavior, but i am not sure that i depend on > > drools or depend by my bad knowledge of it. > > I am using drools fusion and i have a lot of classes with role event. I > > have put them the expiration value to 5 minutes. > > >From my understanding, if i use explicit expiration, as i do, when it > pass > > 5 minutes and that event is out of scope of all my rules, that event is > > deleted. > > But, i noticed that the last event hasn't retracted after 5 minutes and > > this behavior makes the system no stable, because it works differently > > after some minutes. > > > > If i don't use explicit expiration, the system seems to work fine, so i > am > > however happy, but i would like to understand the issue. > > Thanks a lot, > > Matteo. > > > ___ > 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
Re: [rules-users] Guvnor decision tables as a storage.
Hi, In guvnor u can insert or update or delete the rows same operations u can't do it from java application rather u can retriew and display them. -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-decision-tables-as-a-storage-tp4017615p4017617.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools Fusion: expiration
This quote is from the current version of "Fusion": "The above example declares an expiration offset of 30 minutes for StockTick events. After that time, assuming no rule still needs the event, the engine will expire and remove the event from the session automatically." The catch is, as you may have noticed, the clause: "assuming no rule still needs the event". Whatever this means... An educated guess for interpretation for "a rule needs an event" would be "a partially or fully completed activation of a rule holds a reference to an event". But, since the author hasn't added this explanation, it might be something else. -W On 28/05/2012, Matteo Cusmai wrote: > Hi all, > i have noticed a strange behavior, but i am not sure that i depend on > drools or depend by my bad knowledge of it. > I am using drools fusion and i have a lot of classes with role event. I > have put them the expiration value to 5 minutes. > >From my understanding, if i use explicit expiration, as i do, when it pass > 5 minutes and that event is out of scope of all my rules, that event is > deleted. > But, i noticed that the last event hasn't retracted after 5 minutes and > this behavior makes the system no stable, because it works differently > after some minutes. > > If i don't use explicit expiration, the system seems to work fine, so i am > however happy, but i would like to understand the issue. > Thanks a lot, > Matteo. > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Guvnor decision tables as a storage.
Hi, I have a requirement where in i need to save data in guvnor decision table(web-guided) instead of data base. And these guvnor decision tables will act as a database tables where we can store and retrive data rows. Is it possible to insert data rows in guvnor deciosn table(web-guided) from external java application? Thanks. Manasi. -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-decision-tables-as-a-storage-tp4017615.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Lots of org.drools.common.ScheduledAgendaItem instances in memory
Just to make sure: How do you invoke the Engine? (I suppose you don't call with a limit for rule firings.) Unless it's a bug (BTW: your Drools version is?), it's due to one or more of your rules. Are you using timers? How? A detailed investigation of the whereabouts of these ScheduledAgendaItem objects might be done by investigating (via the unstable API) the Agenda and its various components. -W On 28/05/2012, Werner Stoop wrote: > Hi, > > We're using Drools with a StatefulKnowledgeSession to process events coming > from equipment in our network. The system draws conclusions about the state > of the equipment and writes those conclusions to a table in our > database. All our rules work as we expected and the system produces the > correct results. > > However, the memory usage of the JVM steadily goes up when the system runs > for extended periods of time until we start getting OutOfMemoryExceptions > and the server has to be restarted. This is in spite of the fact that the > fact count reported by > the StatefulKnowledgeSession.getFactCount() stays reasonably stable, > with around 30 000 facts (give or take) at any point in time. > > I have run the Eclipse Memory Analyzer tool (http://www.eclipse.org/mat/) > against heap dumps from the JVM several times now, and every time it > reports more and more instances > of org.drools.common.ScheduledAgendaItem referenced from one instance of > java.lang.Object[] > > To be concrete, since this morning the uptime is more than 112 hours in > total, during which the system has processed little over 2 000 000 events > from the network. It has 29 000 facts in the knowledge session, yet in the > heap dump we see 829 632 instances of > org.drools.common.ScheduledAgendaItem. > > What is the ScheduledAgendaItem for? Is there something wrong with my rules > that causes this many instances to be held? Is there something I should do > to release these instances or the Object[] holding on to them? > > Thanks, > Werner Stoop > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] need help or any links customizing guvnor
Refer this blog http://bharadwaj-bobby.blogspot.in/ u'll get to know how to create rules in guvnor gui. On Tue, May 29, 2012 at 12:29 AM, Michael Anstis wrote: > Do you want to add a new editor to Guvnor, or use a Guvnor editor in your > own application? > > > On 28 May 2012 19:51, Abdullah Shaikh wrote: > >> Hi, >> >> I am new to drools & guvnor. I was able to create simple drl file and >> run from classpath and from guvnor too using url. >> >> I saw that we can create rules in guvnor but I want to know if we can >> provide UI for creating rules ? I am not sure but I think what I want >> is guided editor ? >> >> >> Thanks, >> Abdullah >> ___ >> 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 > > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools5.3 can't support double * int?
it is a very simple pojo java class. two method return different type numeric value can't use symbol such as "*","+", and so on. a method and a constant value can work, such as a.getAge() + 2.0, and the getAge() method return a integer. so I resolve this problem by use 1*a.getAge() + a.getIncome(), that expression work correctly. -- View this message in context: http://drools.46999.n3.nabble.com/Drools5-3-can-t-support-double-int-tp4000193p4017612.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor 5.3 Dependency with antlr 3.3 POM.XML issue.
Antlr is special because version 3 depende on version 2. For more info look for the jira in our issue tracker. It works though. -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-5-3-Dependency-with-antlr-3-3-POM-XML-issue-tp3968780p4017611.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] need help or any links customizing guvnor
Do you want to add a new editor to Guvnor, or use a Guvnor editor in your own application? On 28 May 2012 19:51, Abdullah Shaikh wrote: > Hi, > > I am new to drools & guvnor. I was able to create simple drl file and > run from classpath and from guvnor too using url. > > I saw that we can create rules in guvnor but I want to know if we can > provide UI for creating rules ? I am not sure but I think what I want > is guided editor ? > > > Thanks, > Abdullah > ___ > 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
[rules-users] need help or any links customizing guvnor
Hi, I am new to drools & guvnor. I was able to create simple drl file and run from classpath and from guvnor too using url. I saw that we can create rules in guvnor but I want to know if we can provide UI for creating rules ? I am not sure but I think what I want is guided editor ? Thanks, Abdullah ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Time Sliding Window Question
On 28 May 2012 19:30, Bernhard Unger wrote:
> Hello Wolfgang,
>
> thanks for the answer.
> Does that mean the description on page 32 of the Drools Fusion User Guide
> is
> not correct?
>
No, but possibly easy to misunderstand.
> "...
> 2.6.1. Sliding Time Windows
> Sliding Time Windows allow the user to write rules that will only match
> events occurring in the
> last X time units.
> For instance, if the user wants to consider only the Stock Ticks that
> happened in the last 2 minutes,
> the pattern would look like this:
> StockTick() over window:time( 2m )
> Drools uses the "over" keyword to associate windows to patterns.
> ..."
>
The window:time() must be understood as something hooked on "now", as it is
understood by
the Engine, and it is evaluated once, at the time a fact/event is inserted.
> Do you know a way for my simulation to get only the latest events in
> between
> 10 minutes?
> Do I need an additional constraint for the rule?
>
Event processing in real time should either be done with an Engine being run
by a thread executing "fireUntilHalt()", which needn't ever be called, or by
calling fireAllRules() from the same thread doing the insertions.
The simple rule you posted isn't different from the same rule
without "over window:time(x)", because both are instantaneously fulfilled
due to an insert.
-W
>
> Thanks,
>
> Bernhard
>
> -Ursprüngliche Nachricht-
> Von: rules-users-boun...@lists.jboss.org
> [mailto:rules-users-boun...@lists.jboss.org] Im Auftrag von Wolfgang Laun
> Gesendet: Montag, 28. Mai 2012 15:11
> An: Rules Users List
> Betreff: Re: [rules-users] Time Sliding Window Question
>
>
> Whenever you insert an event, a simple rule like
> ruel x when Event() over window:time(x) then...end
> immediately results in an activation. Your for loop merely postpones
> firings.
>
> A selection of an event due to a window:time() is different from a
> selection due to a constraint. The latter may result in cancelling the
> activation if the fact is modified accordingly. But there's no
> reevaluation due to the passage of time.
>
> -W
>
>
> On 28/05/2012, Bernhard Unger wrote:
> > Hello,
> >
> > I am fairly new to Drools and tried my first steps with Drools Fusion and
> > was running into the following problem:
> >
> > According to the Drools Fusion User Guide Version 5.4.0.Final on page 32
> > the
> > following pattern should work and select events in between the last 10
> > minutes:
> > ...
> > StockTick() over window:time( 2m )
> > ...
> > I tried the following example, simulating RHQ EventComposite Events with
> a
> > simple Junit test:
> >
> > ...
> > KnowledgeBuilder kbuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder();
> > kbuilder.add(new ClassPathResource("rhqrules.drl", getClass()),
> > ResourceType.DRL);
> > KnowledgeBaseConfiguration config =
> > KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> > config.setOption(EventProcessingOption.STREAM);
> > nowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config);
> > kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
> > KnowledgeSessionConfiguration conf =
> > KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
> > conf.setOption(ClockTypeOption.get("pseudo"));
> > ksession = kbase.newStatefulKnowledgeSession(conf, null);
> > ...
> > inside the test method:
> > ...
> > For-Loop inserts new Events and increases the pseudo clock in one minute
> > steps:
> > ...
> > for (int i = 0; i < 100; i++) {
> > timestamp = clock.advanceTime(1, TimeUnit.MINUTES);
> > ksession.insert(new EventComposite("EventDetail" + i, resourceId,
> > "resourceName" + i, "resourceAncestry" + i, resourceTypeId,
> > eventId, severity, "sourceLocation" + i, timestamp));
> > }
> > ...
> > ksession.fireAllRules();
> > ...
> >
> > The .drl definition should fire only events of the last 10 minutes,
> however
> > all inserted 100 events are fired:
> > declare EventComposite
> > @role( event )
> > end
> > rule "Rule1 events in between last 10 minutes"
> > when
> >$event : EventComposite() over window:time( 10m )
> > then
> > System.out.println("Event in between the last 10 minutes:: " +
> $event);
> > end
> >
> > On the other hand this rule works as expected and selects only events
> older
> > than 10 minutes:
> >
> > rule "Rule2 events not in between the last 10 minutes"
> > when
> > $eventA : EventComposite( )
> > not EventComposite( this.resourceId == $eventA.resourceId ) over
> > window:time( 10m )
> >
> > then
> > System.out.println("Event not in between the last 10 minutes: " +
> > $eventA);
> > end
> >
> >
> > My question is:
> > What did I wrong in the definition of Rule-1, what is the correct
> statement
> > for finding the last 10 minutes events?
> >
> > Background information:
> > I am doing some research on implementing using the drools framework
> inside
> > the RHQ framework for complex event processing. I would like to show that
> > this is possible and could be uses reaso
Re: [rules-users] Time Sliding Window Question
Hello Wolfgang,
thanks for the answer.
Does that mean the description on page 32 of the Drools Fusion User Guide is
not correct?
"...
2.6.1. Sliding Time Windows
Sliding Time Windows allow the user to write rules that will only match
events occurring in the
last X time units.
For instance, if the user wants to consider only the Stock Ticks that
happened in the last 2 minutes,
the pattern would look like this:
StockTick() over window:time( 2m )
Drools uses the "over" keyword to associate windows to patterns.
..."
Do you know a way for my simulation to get only the latest events in between
10 minutes?
Do I need an additional constraint for the rule?
Thanks,
Bernhard
-Ursprüngliche Nachricht-
Von: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] Im Auftrag von Wolfgang Laun
Gesendet: Montag, 28. Mai 2012 15:11
An: Rules Users List
Betreff: Re: [rules-users] Time Sliding Window Question
Whenever you insert an event, a simple rule like
ruel x when Event() over window:time(x) then...end
immediately results in an activation. Your for loop merely postpones
firings.
A selection of an event due to a window:time() is different from a
selection due to a constraint. The latter may result in cancelling the
activation if the fact is modified accordingly. But there's no
reevaluation due to the passage of time.
-W
On 28/05/2012, Bernhard Unger wrote:
> Hello,
>
> I am fairly new to Drools and tried my first steps with Drools Fusion and
> was running into the following problem:
>
> According to the Drools Fusion User Guide Version 5.4.0.Final on page 32
> the
> following pattern should work and select events in between the last 10
> minutes:
> ...
> StockTick() over window:time( 2m )
> ...
> I tried the following example, simulating RHQ EventComposite Events with a
> simple Junit test:
>
> ...
> KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(new ClassPathResource("rhqrules.drl", getClass()),
> ResourceType.DRL);
> KnowledgeBaseConfiguration config =
> KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> config.setOption(EventProcessingOption.STREAM);
> nowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config);
> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
> KnowledgeSessionConfiguration conf =
> KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
> conf.setOption(ClockTypeOption.get("pseudo"));
> ksession = kbase.newStatefulKnowledgeSession(conf, null);
> ...
> inside the test method:
> ...
> For-Loop inserts new Events and increases the pseudo clock in one minute
> steps:
> ...
> for (int i = 0; i < 100; i++) {
> timestamp = clock.advanceTime(1, TimeUnit.MINUTES);
> ksession.insert(new EventComposite("EventDetail" + i, resourceId,
> "resourceName" + i, "resourceAncestry" + i, resourceTypeId,
> eventId, severity, "sourceLocation" + i, timestamp));
> }
> ...
> ksession.fireAllRules();
> ...
>
> The .drl definition should fire only events of the last 10 minutes,
however
> all inserted 100 events are fired:
> declare EventComposite
> @role( event )
> end
> rule "Rule1 events in between last 10 minutes"
> when
>$event : EventComposite() over window:time( 10m )
> then
> System.out.println("Event in between the last 10 minutes:: " +
$event);
> end
>
> On the other hand this rule works as expected and selects only events
older
> than 10 minutes:
>
> rule "Rule2 events not in between the last 10 minutes"
> when
> $eventA : EventComposite( )
> not EventComposite( this.resourceId == $eventA.resourceId ) over
> window:time( 10m )
>
> then
> System.out.println("Event not in between the last 10 minutes: " +
> $eventA);
> end
>
>
> My question is:
> What did I wrong in the definition of Rule-1, what is the correct
statement
> for finding the last 10 minutes events?
>
> Background information:
> I am doing some research on implementing using the drools framework inside
> the RHQ framework for complex event processing. I would like to show that
> this is possible and could be uses reasonable for RHQ event processing.
>
> Any help is highly appreceated!
>
> Thanks and kind regards
>
> Bernhard
>
>
>
>
>
>
>
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
___
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https://lists.jboss.org/mailman/listinfo/rules-users
___
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Re: [rules-users] Prevent saving the resource when using guvnorEditorObjRef, in case if validation fails.
Thanks Esteban for the info. And yes, I will log a feature request ... -- View this message in context: http://drools.46999.n3.nabble.com/Prevent-saving-the-resource-when-using-guvnorEditorObjRef-in-case-if-validation-fails-tp4017580p4017605.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Getting error in my Decision Table
Thanks Mike n Bharadwaj...its working now..I gave 6,99... -- View this message in context: http://drools.46999.n3.nabble.com/Getting-error-in-my-Decision-Table-tp4017588p4017604.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] KnowledgeAgent dispose - KnowledgeBase dispose
You just use kSession.dispose(); -- View this message in context: http://drools.46999.n3.nabble.com/KnowledgeAgent-dispose-KnowledgeBase-dispose-tp3931731p4017603.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Can Drools be used with Stand Alone Java application
Yes, you can do it by stand alone for that u need to create manual drl's and decision tables and execute them via java code. -- View this message in context: http://drools.46999.n3.nabble.com/Can-Drools-be-used-with-Stand-Alone-Java-application-tp3943666p4017602.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Data type and Date format vlidation
This u can do it from front end or java code it's self why do want to do in drool file? coz that is easy and looks good. -- View this message in context: http://drools.46999.n3.nabble.com/Data-type-and-Date-format-vlidation-tp3950113p4017600.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools Fusion: expiration
Hi all, i have noticed a strange behavior, but i am not sure that i depend on drools or depend by my bad knowledge of it. I am using drools fusion and i have a lot of classes with role event. I have put them the expiration value to 5 minutes. >From my understanding, if i use explicit expiration, as i do, when it pass 5 minutes and that event is out of scope of all my rules, that event is deleted. But, i noticed that the last event hasn't retracted after 5 minutes and this behavior makes the system no stable, because it works differently after some minutes. If i don't use explicit expiration, the system seems to work fine, so i am however happy, but i would like to understand the issue. Thanks a lot, Matteo. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Time Sliding Window Question
Whenever you insert an event, a simple rule like
ruel x when Event() over window:time(x) then...end
immediately results in an activation. Your for loop merely postpones firings.
A selection of an event due to a window:time() is different from a
selection due to a constraint. The latter may result in cancelling the
activation if the fact is modified accordingly. But there's no
reevaluation due to the passage of time.
-W
On 28/05/2012, Bernhard Unger wrote:
> Hello,
>
> I am fairly new to Drools and tried my first steps with Drools Fusion and
> was running into the following problem:
>
> According to the Drools Fusion User Guide Version 5.4.0.Final on page 32
> the
> following pattern should work and select events in between the last 10
> minutes:
> ...
> StockTick() over window:time( 2m )
> ...
> I tried the following example, simulating RHQ EventComposite Events with a
> simple Junit test:
>
> ...
> KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(new ClassPathResource("rhqrules.drl", getClass()),
> ResourceType.DRL);
> KnowledgeBaseConfiguration config =
> KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
> config.setOption(EventProcessingOption.STREAM);
> nowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config);
> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
> KnowledgeSessionConfiguration conf =
> KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
> conf.setOption(ClockTypeOption.get("pseudo"));
> ksession = kbase.newStatefulKnowledgeSession(conf, null);
> ...
> inside the test method:
> ...
> For-Loop inserts new Events and increases the pseudo clock in one minute
> steps:
> ...
> for (int i = 0; i < 100; i++) {
> timestamp = clock.advanceTime(1, TimeUnit.MINUTES);
> ksession.insert(new EventComposite("EventDetail" + i, resourceId,
> "resourceName" + i, "resourceAncestry" + i, resourceTypeId,
> eventId, severity, "sourceLocation" + i, timestamp));
> }
> ...
> ksession.fireAllRules();
> ...
>
> The .drl definition should fire only events of the last 10 minutes, however
> all inserted 100 events are fired:
> declare EventComposite
> @role( event )
> end
> rule "Rule1 events in between last 10 minutes"
> when
>$event : EventComposite() over window:time( 10m )
> then
> System.out.println("Event in between the last 10 minutes:: " + $event);
> end
>
> On the other hand this rule works as expected and selects only events older
> than 10 minutes:
>
> rule "Rule2 events not in between the last 10 minutes"
> when
> $eventA : EventComposite( )
> not EventComposite( this.resourceId == $eventA.resourceId ) over
> window:time( 10m )
>
> then
> System.out.println("Event not in between the last 10 minutes: " +
> $eventA);
> end
>
>
> My question is:
> What did I wrong in the definition of Rule-1, what is the correct statement
> for finding the last 10 minutes events?
>
> Background information:
> I am doing some research on implementing using the drools framework inside
> the RHQ framework for complex event processing. I would like to show that
> this is possible and could be uses reasonable for RHQ event processing.
>
> Any help is highly appreceated!
>
> Thanks and kind regards
>
> Bernhard
>
>
>
>
>
>
>
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
___
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Re: [rules-users] NullPointerException while loading pkg by KnowledgeAgent
can u share chageset.xml -- View this message in context: http://drools.46999.n3.nabble.com/NullPointerException-while-loading-pkg-by-KnowledgeAgent-tp3959482p4017598.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor 5.3 Dependency with antlr 3.3 POM.XML issue.
Add dependency antlr3.3 to your pom ,if u have already older version of antlr in your pom just remove it. -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-5-3-Dependency-with-antlr-3-3-POM-XML-issue-tp3968780p4017597.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Hi people im a drools newbie i get this error trying to run the hello world example plz help
This usually indicates incompatible versions of two libraries. Get the most up-to-date jars of drools and try again. Also make sure you don't have multiple versions on the classpath -- View this message in context: http://drools.46999.n3.nabble.com/Hi-people-im-a-drools-newbie-i-get-this-error-trying-to-run-the-hello-world-example-plz-help-tp3977393p4017596.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] How to set drools.dialect.mvel.strict = on Guvnor concole
This drools.dialect.mvel.strict mode on or off u can do it from java code only and u can't chage it in guvnor drools.dialect.mvel.strict set this method to false. in java code -- View this message in context: http://drools.46999.n3.nabble.com/How-to-set-drools-dialect-mvel-strict-true-false-on-Guvnor-concole-tp3969067p4017595.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Getting error in my Decision Table
I could see first codition says policyYear == $param (here in this case it will accept only numaric values) but u r trying to pass value as [6;99] which throws u an exception. Remove the values and give in numeric. -- View this message in context: http://drools.46999.n3.nabble.com/Getting-error-in-my-Decision-Table-tp4017588p4017594.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Changing rules at runtime through a GUI
For those operations u can use guvnor gui,no need to go for another tool. -- View this message in context: http://drools.46999.n3.nabble.com/Changing-rules-at-runtime-through-a-GUI-tp3999690p4017591.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Getting error in my Decision Table
It's because rows 31-34 contain "[6;99]" whereas your condition just shows "policyYear == $param" so you're getting DRL like "Commission( policyTear == [6;99] )" On 28 May 2012 13:27, zeeshan wrote: > Hi ! > > I am getting error in my decision tableplease verify it...I am > attaching > my file http://drools.46999.n3.nabble.com/file/n4017588/111.png > http://drools.46999.n3.nabble.com/file/n4017588/Distribution_Cost.xls > Distribution_Cost.xls > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Getting-error-in-my-Decision-Table-tp4017588.html > Sent from the Drools: User forum mailing list archive at Nabble.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
Re: [rules-users] Drools5.3 can't support double * int?
Can share code ur drl file and test class that going to execite drl file.so that it would be very easy to trace it out. Here u r getting nullpointer exception when u trying to get some value from getter method -- View this message in context: http://drools.46999.n3.nabble.com/Drools5-3-can-t-support-double-int-tp4000193p4017589.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Getting error in my Decision Table
Hi ! I am getting error in my decision tableplease verify it...I am attaching my file http://drools.46999.n3.nabble.com/file/n4017588/111.png http://drools.46999.n3.nabble.com/file/n4017588/Distribution_Cost.xls Distribution_Cost.xls -- View this message in context: http://drools.46999.n3.nabble.com/Getting-error-in-my-Decision-Table-tp4017588.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Rule flow on two package
Yes, U can do that navigate to the rule flow file which u want to set it as global. Go to Edit- choose option called "promote to global" -- View this message in context: http://drools.46999.n3.nabble.com/Rule-flow-on-two-package-tp3998808p4017587.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] who can help me solve the http 401 error
First let me see you code how u r accessing the binary file url. Here i could see u r missing something ResourceFactory.newUrlResource(Uri uri) after this u have to pass one more param like type as "package" -- View this message in context: http://drools.46999.n3.nabble.com/who-can-help-me-solve-the-http-401-error-tp4006186p4017586.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] strict-mode and nested object property access in drools 5.4.0.Final - can i cast?
doh. thank you very much lhorton and Wolfgang. -- View this message in context: http://drools.46999.n3.nabble.com/strict-mode-and-nested-object-property-access-in-drools-5-4-0-Final-can-i-cast-tp4013373p4017584.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Time Sliding Window Question
Hello,
I am fairly new to Drools and tried my first steps with Drools Fusion and
was running into the following problem:
According to the Drools Fusion User Guide Version 5.4.0.Final on page 32 the
following pattern should work and select events in between the last 10
minutes:
...
StockTick() over window:time( 2m )
...
I tried the following example, simulating RHQ EventComposite Events with a
simple Junit test:
...
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(new ClassPathResource("rhqrules.drl", getClass()),
ResourceType.DRL);
KnowledgeBaseConfiguration config =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
config.setOption(EventProcessingOption.STREAM);
nowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
KnowledgeSessionConfiguration conf =
KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
conf.setOption(ClockTypeOption.get("pseudo"));
ksession = kbase.newStatefulKnowledgeSession(conf, null);
...
inside the test method:
...
For-Loop inserts new Events and increases the pseudo clock in one minute
steps:
...
for (int i = 0; i < 100; i++) {
timestamp = clock.advanceTime(1, TimeUnit.MINUTES);
ksession.insert(new EventComposite("EventDetail" + i, resourceId,
"resourceName" + i, "resourceAncestry" + i, resourceTypeId,
eventId, severity, "sourceLocation" + i, timestamp));
}
...
ksession.fireAllRules();
...
The .drl definition should fire only events of the last 10 minutes, however
all inserted 100 events are fired:
declare EventComposite
@role( event )
end
rule "Rule1 events in between last 10 minutes"
when
$event : EventComposite() over window:time( 10m )
then
System.out.println("Event in between the last 10 minutes:: " + $event);
end
On the other hand this rule works as expected and selects only events older
than 10 minutes:
rule "Rule2 events not in between the last 10 minutes"
when
$eventA : EventComposite( )
not EventComposite( this.resourceId == $eventA.resourceId ) over
window:time( 10m )
then
System.out.println("Event not in between the last 10 minutes: " +
$eventA);
end
My question is:
What did I wrong in the definition of Rule-1, what is the correct statement
for finding the last 10 minutes events?
Background information:
I am doing some research on implementing using the drools framework inside
the RHQ framework for complex event processing. I would like to show that
this is possible and could be uses reasonable for RHQ event processing.
Any help is highly appreceated!
Thanks and kind regards
Bernhard
___
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[rules-users] Lots of org.drools.common.ScheduledAgendaItem instances in memory
Hi, We're using Drools with a StatefulKnowledgeSession to process events coming from equipment in our network. The system draws conclusions about the state of the equipment and writes those conclusions to a table in our database. All our rules work as we expected and the system produces the correct results. However, the memory usage of the JVM steadily goes up when the system runs for extended periods of time until we start getting OutOfMemoryExceptions and the server has to be restarted. This is in spite of the fact that the fact count reported by the StatefulKnowledgeSession.getFactCount() stays reasonably stable, with around 30 000 facts (give or take) at any point in time. I have run the Eclipse Memory Analyzer tool (http://www.eclipse.org/mat/) against heap dumps from the JVM several times now, and every time it reports more and more instances of org.drools.common.ScheduledAgendaItem referenced from one instance of java.lang.Object[] To be concrete, since this morning the uptime is more than 112 hours in total, during which the system has processed little over 2 000 000 events from the network. It has 29 000 facts in the knowledge session, yet in the heap dump we see 829 632 instances of org.drools.common.ScheduledAgendaItem. What is the ScheduledAgendaItem for? Is there something wrong with my rules that causes this many instances to be held? Is there something I should do to release these instances or the Object[] holding on to them? Thanks, Werner Stoop ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Prevent saving the resource when using guvnorEditorObjRef, in case if validation fails.
AFAIK, there is no way to do what you have described. Feel free to file a new feature request in jira about this. Best Regards, Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Mon, May 28, 2012 at 8:44 AM, worldofprasanna wrote: > Hi All, > > We have embedded the Guvnor decision table asset into our html page and > obtained the guvnorEditorObjRef to validate the new rule which is added. We > wrote our business logic within the function, > > guvnorEditorObjRef.registerBeforeSaveAllButtonCallbackFunction() > > > And it works fine. But the problem is when we find the business validation > got failed, we couldn t stop the resource from saving. Check In dialog box > opens and we couldn t find a way to prevent it from saving. > > Is there anyway to prevent the asset from Saving in case, if the validation > failed ? > > Thanks, > Prasanna Venkataraman. > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Prevent-saving-the-resource-when-using-guvnorEditorObjRef-in-case-if-validation-fails-tp4017580.html > Sent from the Drools: User forum mailing list archive at Nabble.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
