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@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@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@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@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>

--
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