9:02 a.m.
I am having a hard time finding an example of what I am trying to do, so
maybe someone here could help me. What I am trying to do is determine how
many facts fall into the same category.
My facts are 'processes' and one of their attributes is a 'name'. My
goal
is to determine how many processes with the same name are running. The
problem is I do not know ahead of time the process names available, I want
to determine that set at runtime. Also, once I determine the count for a
given name, I do not want to run it again for the other processes that fall
in that name category.
I think "from collect" is probably what I want to use here, but I am not
sure how to grab the names in my Pattern from the fact I am currently
iterating on.
Thanks.
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9:38 a.m.
Try that:
rule XYZ
when
$p : Process( $name : name )
Number( $count : intValue) from accumulate(
$i : Process( name == $name, this != $p ),
count( $i ) )
then
System.out.println( "There are "+$count+" instances of processes named
"+$name );
end
[]s
Edson
2008/1/29, cfili <cfilippelli(a)cerner.com>:
I am having a hard time finding an example of what I am trying to do, so
maybe someone here could help me. What I am trying to do is determine how
many facts fall into the same category.
My facts are 'processes' and one of their attributes is a 'name'. My
goal
is to determine how many processes with the same name are running. The
problem is I do not know ahead of time the process names available, I want
to determine that set at runtime. Also, once I determine the count for a
given name, I do not want to run it again for the other processes that
fall
in that name category.
I think "from collect" is probably what I want to use here, but I am not
sure how to grab the names in my Pattern from the fact I am currently
iterating on.
Thanks.
--
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_______________________________________________
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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
9:46 a.m.
Sorry, my previous suggestion will count the same process name multiple
times. There are a few ways to avoid it. I would probably use a helper fact:
rule XYZ
when
$p : Process( $name : name )
not( ProcessCount( name == $name ) )
Number( $count : intValue) from accumulate(
$i : Process( name == $name, this != $p ),
count( $i ) )
then
System.out.println( "There are "+$count+" instances of processes
named "+$name );
insert( new ProcessCount( $name, $count ) );
end
Hope it helps,
Edson
2008/1/29, Edson Tirelli <tirelli(a)post.com>:
Try that:
rule XYZ
when
$p : Process( $name : name )
Number( $count : intValue) from accumulate(
$i : Process( name == $name, this != $p ),
count( $i ) )
then
System.out.println( "There are "+$count+" instances of processes named
"+$name );
end
[]s
Edson
2008/1/29, cfili <cfilippelli(a)cerner.com>:
>
>
> I am having a hard time finding an example of what I am trying to do, so
> maybe someone here could help me. What I am trying to do is determine
> how
> many facts fall into the same category.
>
> My facts are 'processes' and one of their attributes is a 'name'.
My
> goal
> is to determine how many processes with the same name are running. The
> problem is I do not know ahead of time the process names available, I
> want
> to determine that set at runtime. Also, once I determine the count for
> a
> given name, I do not want to run it again for the other processes that
> fall
> in that name category.
>
> I think "from collect" is probably what I want to use here, but I am not
> sure how to grab the names in my Pattern from the fact I am currently
> iterating on.
>
> Thanks.
> --
> View this message in context:
> http://www.nabble.com/Count-matching-facts-tp15160392p15160392.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)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
--
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
10:53 a.m.
Yeah I tried your first suggestion and ran into the duplication. I'd rather
not create a new fact for each one of these... any other way of avoiding it?
Edson Tirelli-3 wrote:
Sorry, my previous suggestion will count the same process name multiple
times. There are a few ways to avoid it. I would probably use a helper
fact:
rule XYZ
when
$p : Process( $name : name )
not( ProcessCount( name == $name ) )
Number( $count : intValue) from accumulate(
$i : Process( name == $name, this != $p ),
count( $i ) )
then
System.out.println( "There are "+$count+" instances of processes
named "+$name );
insert( new ProcessCount( $name, $count ) );
end
Hope it helps,
Edson
2008/1/29, Edson Tirelli <tirelli(a)post.com>:
>
>
> Try that:
>
> rule XYZ
> when
> $p : Process( $name : name )
> Number( $count : intValue) from accumulate(
> $i : Process( name == $name, this != $p ),
> count( $i ) )
> then
> System.out.println( "There are "+$count+" instances of processes
named
> "+$name );
> end
>
> []s
> Edson
>
>
> 2008/1/29, cfili <cfilippelli(a)cerner.com>:
> >
> >
> > I am having a hard time finding an example of what I am trying to do,
> so
> > maybe someone here could help me. What I am trying to do is determine
> > how
> > many facts fall into the same category.
> >
> > My facts are 'processes' and one of their attributes is a
'name'. My
> > goal
> > is to determine how many processes with the same name are running. The
> > problem is I do not know ahead of time the process names available, I
> > want
> > to determine that set at runtime. Also, once I determine the count for
> > a
> > given name, I do not want to run it again for the other processes that
> > fall
> > in that name category.
> >
> > I think "from collect" is probably what I want to use here, but I am
> not
> > sure how to grab the names in my Pattern from the fact I am currently
> > iterating on.
> >
> > Thanks.
> > --
> > View this message in context:
> > http://www.nabble.com/Count-matching-facts-tp15160392p15160392.html
> > Sent from the drools - user mailing list archive at Nabble.com.
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)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
--
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(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
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11:23 a.m.
Not really... all solutions are variations of this. :(
We do intent to develop things equivalent to SQL group by, unique, etc
clauses... but no such feature today.
[]s
Edson
2008/1/29, cfili <cfilippelli(a)cerner.com>:
Yeah I tried your first suggestion and ran into the duplication. I'd
rather
not create a new fact for each one of these... any other way of avoiding
it?
Edson Tirelli-3 wrote:
>
> Sorry, my previous suggestion will count the same process name
multiple
> times. There are a few ways to avoid it. I would probably use a helper
> fact:
>
> rule XYZ
> when
> $p : Process( $name : name )
> not( ProcessCount( name == $name ) )
> Number( $count : intValue) from accumulate(
> $i : Process( name == $name, this != $p ),
> count( $i ) )
> then
> System.out.println( "There are "+$count+" instances of processes
> named "+$name );
> insert( new ProcessCount( $name, $count ) );
> end
>
>
> Hope it helps,
> Edson
>
> 2008/1/29, Edson Tirelli <tirelli(a)post.com>:
>>
>>
>> Try that:
>>
>> rule XYZ
>> when
>> $p : Process( $name : name )
>> Number( $count : intValue) from accumulate(
>> $i : Process( name == $name, this != $p ),
>> count( $i ) )
>> then
>> System.out.println( "There are "+$count+" instances of
processes
named
>> "+$name );
>> end
>>
>> []s
>> Edson
>>
>>
>> 2008/1/29, cfili <cfilippelli(a)cerner.com>:
>> >
>> >
>> > I am having a hard time finding an example of what I am trying to do,
>> so
>> > maybe someone here could help me. What I am trying to do is
determine
>> > how
>> > many facts fall into the same category.
>> >
>> > My facts are 'processes' and one of their attributes is a
'name'. My
>> > goal
>> > is to determine how many processes with the same name are
running. The
>> > problem is I do not know ahead of time the process names available, I
>> > want
>> > to determine that set at runtime. Also, once I determine the count
for
>> > a
>> > given name, I do not want to run it again for the other processes
that
>> > fall
>> > in that name category.
>> >
>> > I think "from collect" is probably what I want to use here, but I
am
>> not
>> > sure how to grab the names in my Pattern from the fact I am currently
>> > iterating on.
>> >
>> > Thanks.
>> > --
>> > View this message in context:
>> > http://www.nabble.com/Count-matching-facts-tp15160392p15160392.html
>> > Sent from the drools - user mailing list archive at Nabble.com.
>> >
>> > _______________________________________________
>> > rules-users mailing list
>> > rules-users(a)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
>
>
>
>
> --
> 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(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
--
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_______________________________________________
rules-users mailing list
rules-users(a)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
12:06 p.m.
Thanks for your suggestions.
Edson Tirelli-3 wrote:
Not really... all solutions are variations of this. :(
We do intent to develop things equivalent to SQL group by, unique, etc
clauses... but no such feature today.
[]s
Edson
2008/1/29, cfili <cfilippelli(a)cerner.com>:
>
>
> Yeah I tried your first suggestion and ran into the duplication. I'd
> rather
> not create a new fact for each one of these... any other way of avoiding
> it?
>
>
> Edson Tirelli-3 wrote:
> >
> > Sorry, my previous suggestion will count the same process name
> multiple
> > times. There are a few ways to avoid it. I would probably use a helper
> > fact:
> >
> > rule XYZ
> > when
> > $p : Process( $name : name )
> > not( ProcessCount( name == $name ) )
> > Number( $count : intValue) from accumulate(
> > $i : Process( name == $name, this != $p ),
> > count( $i ) )
> > then
> > System.out.println( "There are "+$count+" instances of
processes
> > named "+$name );
> > insert( new ProcessCount( $name, $count ) );
> > end
> >
> >
> > Hope it helps,
> > Edson
> >
> > 2008/1/29, Edson Tirelli <tirelli(a)post.com>:
> >>
> >>
> >> Try that:
> >>
> >> rule XYZ
> >> when
> >> $p : Process( $name : name )
> >> Number( $count : intValue) from accumulate(
> >> $i : Process( name == $name, this != $p ),
> >> count( $i ) )
> >> then
> >> System.out.println( "There are "+$count+" instances of
processes
> named
> >> "+$name );
> >> end
> >>
> >> []s
> >> Edson
> >>
> >>
> >> 2008/1/29, cfili <cfilippelli(a)cerner.com>:
> >> >
> >> >
> >> > I am having a hard time finding an example of what I am trying to
> do,
> >> so
> >> > maybe someone here could help me. What I am trying to do is
> determine
> >> > how
> >> > many facts fall into the same category.
> >> >
> >> > My facts are 'processes' and one of their attributes is a
'name'.
> My
> >> > goal
> >> > is to determine how many processes with the same name are
> running. The
> >> > problem is I do not know ahead of time the process names available,
> I
> >> > want
> >> > to determine that set at runtime. Also, once I determine the count
> for
> >> > a
> >> > given name, I do not want to run it again for the other processes
> that
> >> > fall
> >> > in that name category.
> >> >
> >> > I think "from collect" is probably what I want to use here,
but I am
> >> not
> >> > sure how to grab the names in my Pattern from the fact I am
> currently
> >> > iterating on.
> >> >
> >> > Thanks.
> >> > --
> >> > View this message in context:
> >> > http://www.nabble.com/Count-matching-facts-tp15160392p15160392.html
> >> > Sent from the drools - user mailing list archive at Nabble.com.
> >> >
> >> > _______________________________________________
> >> > rules-users mailing list
> >> > rules-users(a)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
> >
> >
> >
> >
> > --
> > 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(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/Count-matching-facts-tp15160392p15163614.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)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
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