3:13 a.m.
Hi all,
I'm a newbie here and have a problem which seems to be quite simple, but I
just can't solve it. I have a set of peoples with the attribute age and
want to get the oldest person from these set. I would really appreciate, if
somebody tells me how can I do it with jdrools.
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3:27 a.m.
You probably want something like this:
Rule "multiplePeople"
p1 : Person()
not Person (age > p1.age)
not OldestPerson()
then
insert (new OldestPerson(p1))
end
The oldest person is the person for whom there isn't someone older.
If there are multiple oldest people of the same age this will pick one arbitrarily.
You may want insertLogical if your people can be updated/inserted.
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of nemo
Sent: 24 January 2011 09:13
To: rules-users(a)lists.jboss.org
Subject: [rules-users] Get maximum
Hi all,
I'm a newbie here and have a problem which seems to be quite simple, but I
just can't solve it. I have a set of peoples with the attribute age and
want to get the oldest person from these set. I would really appreciate, if
somebody tells me how can I do it with jdrools.
--
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engine.46999.n3.nabble.com/Get-maximum-tp2318296p2318296.html
Sent from the Drools - User mailing list archive at Nabble.com.
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3:34 a.m.
Hi,
It might be a naive approach (assuming Person objects are facts), but
did you try something like:
when
$oldest : Person($age : age)
not Person(age > $age)
then
System.out.println("Oldest person is " + $oldest.getName());
Best regards,
Bruno.
nemo a écrit :
Hi all,
I'm a newbie here and have a problem which seems to be quite simple, but I
just can't solve it. I have a set of peoples with the attribute age and
want to get the oldest person from these set. I would really appreciate, if
somebody tells me how can I do it with jdrools.
3:51 a.m.
Thanks you a lot for a answers. Now, I wrote a rule:
rule "Get last event"
when
$last : ObjectEventType( $time : eventTime )
not ObjectEventType( eventTime > $time )
then
System.out.println("Oldest person is " + $last.getEventTime());
Unfortunately I get "Syntax error, insert ";" to complete Statement,
Syntax
error, insert ")" to complete Expression" have you an idea, what's
wrong?
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3:56 a.m.
Your then should probably be on a new line and you are missing the end. (don't know if
that is a copy and paste error.
Have you imported ObjectEventType?
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of nemo
Sent: 24 January 2011 09:51
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Get maximum
Thanks you a lot for a answers. Now, I wrote a rule:
rule "Get last event"
when
$last : ObjectEventType( $time : eventTime )
not ObjectEventType( eventTime > $time )
then
System.out.println("Oldest person is " + $last.getEventTime());
Unfortunately I get "Syntax error, insert ";" to complete Statement,
Syntax
error, insert ")" to complete Expression" have you an idea, what's
wrong?
--
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this message in error, please immediately notify the postmaster(a)nds.com and delete it from
your system as well as any copies. The content of e-mails as well as traffic data may be
monitored by NDS for employment and security purposes. To protect the environment please
do not print this e-mail unless necessary.
NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603
8808 40-00
**************************************************************************************
4:06 a.m.
How embarrassing, it was the missing end:) Thank you once more.
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5087
days inactive
5087
days old
5 comments
3 participants
participants (3)
-
Bruno Freudensprung -
nemo -
Swindells, Thomas