Re: [rules-users] "Not exists" on at least one element from the set
So what you are trying to say is that you want a rule to fire if there exists a name from
(a, b, c) such that there are no object with that name?
Which is probably something like the following:
global $collection (which is set to the list
exists (
$name: String from $collection
not Object(name == $name)
)
Then
...
You'll probably have to fix the syntax but that may get you closer.
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of LeoIo
Sent: 23 June 2010 10:25
To: rules-users(a)lists.jboss.org
Subject: [rules-users] "Not exists" on at least one element from the set
Hi,
I am desperately trying to figure out how to express the following:
Having a set of object names, say (a,b,c) I want to write a rule firing when
there are no objects in working memory with name equals to at least one name
from the set.
In other words I want to say: fire if there are no objects with name 'a', or
no objects with name 'b' or no objects with name 'c'.
The rule "not Object(name in('a', 'b', 'c'))" only
fires if none of the
objects exist.
What I need is different though.
Any help greatly appreciated.
Thanks a lot.
--
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