RE: [rules-users] More than one agenda group for a rule?
You could do the same thing by structuring your rules in a certain way. Have an object of
that defines the current context. i.e.
class Context {
String name;
}
The each rule matches on whether a given Context is asserted in working memory.
when
exists Context(name == "foo")
...
then
...
end
This can be as flexible as you please:
when
exists Context(name matches ".*startup.*")
...
then
...
end
--- On Tue, 9/2/08, Bagwell, Allen F <afbagwe(a)sandia.gov> wrote:
From: Bagwell, Allen F <afbagwe(a)sandia.gov>
Subject: RE: [rules-users] More than one agenda group for a rule?
To: "Rules Users List" <rules-users(a)lists.jboss.org>
Date: Tuesday, September 2, 2008, 1:20 PM
Our rule engine software made by Talarian Corporation as
part of their RTworks suite.
The company was bought out by TIBCO several years ago, and
the software is no longer supported. They essentially
consigned it to the dust bin. And with a massive upgrade to
our system, we had to find a rule engine alternative.
The old RTworks rule engine concept of an AgendaGroup was
called a "Context". You could assign a rule to as
many contexts as you wanted. You just listed their names,
separated by semi-colons, following the context keyword.
There are always trade-offs when switching, but Drools has
many more features we could only wish were present in the
old software.
-A
________________________________
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of
Mark Proctor
Sent: Wednesday, August 27, 2008 2:06 PM
To: Rules Users List
Subject: Re: [rules-users] More than one agenda group for a
rule?
Bagwell, Allen F wrote:
That's not so welcome news. Our old rule engine
software had this ability. We'll find a work-around, but
is this being considered in a later update to Drools? My
thought is that rule should be like method: you really
should only need to write it once.
no plans to add this, especially as ruleflow is the
preferred way to orchestration rules so that's where our
focus is these days. Which is your old rule engine that
supported this? I don't believe jess or clips allow a
rule to live in multiple modules - which is what
AgendaGroups is based on.
Mark
-A
-----Original Message-----
From:
rules-users-bounces@lists.jboss.org<mailto:rules-users-bounces@lists.jboss.org>
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of
Mark Proctor
Sent: Wednesday, August 27, 2008 12:07 PM
To: Rules Users List
Subject: Re: [rules-users] More than one agenda group for a
rule?
Bagwell, Allen F wrote:
I was wondering (hoping) that there is a way to put a rule
into more
than one agenda group?
I've tried writing:
rule "example"
agenda-group "process x stuff"
agenda-group "process y stuff"
when
(blah, blah, blah)
then
(blah, blah, blah)
end
But while the compiler has no problems with this it really
only
includes the rule in the last agenda-group listed.
nope, not possible.
Thanks,
Allen
----------------------------------------------------------------------
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