[rules-dev] JBRMS question - originally posted to FMeyer

[Anstis, Michael (M.)]

Hi,
 
Apart from possibly stepping too far across the "user" mailing list to
this "developer" list; I've commented the JIRA to the extent that
allowing for "value domains" could be accommodated by exposing (in this
particular case) the "from" keyword in the editor. This would allow for
static and dynamic lists to be included in rules. Perhaps a wider
requirement would be to expose more DRL keywords in a graphical form;
rather than the more simple facts, CE's and other predicates?
 
With kind regards,
 
Mike


________________________________

	From: rules-dev-bounces at lists.jboss.org
[mailto:rules-dev-bounces at lists.jboss.org] On Behalf Of Michael Neale
	Sent: 06 July 2007 08:54
	To: Rules Dev List
	Subject: Re: [rules-dev] JBRMS question - originally posted to
FMeyer
	
	
	Hi Steve (/me is coming up for some air, thought I would have a
look on the mailing lists !).
	
	I assume you are talking about data driven enumerations - so
basically "somewhere" you have a list of values, and that is provided to
users as a drop down (plus validated etc). 
	
	This is useful for GUI stuff, but also (potentially) helpful for
indexing for performance (but thats for another day).
	
	There is a JIRA for this, for v2 of the BRMS:
http://jira.jboss.com/jira/browse/JBRULES-821 would be great if you
could put your thoughts down there.
	
	I think ILog calls these "domains" - I like the term "value
domain" or something like it. 
	
	In any case, I think a variety of sources need to be provided
for this: so the list of values could be part of the "ontology" (the
fact model, more to come on that later) - ie some attribute of the
package definition specifies a list of value. OR, perhaps it comes from
an external source, like a flat file, or a database query - eg you may
have some external database with Part Numbers for a Widget (!) - those
part numbers may change from time to time, so it should periodically
refresh the list. 
	
	One extra feature is to be able to have name/value lists - so
the name is shown, but the value applies - say you may want to display a
human readable description of the part number, but the rule only cares
about the value from the database. 
	
	My $0.02.
	
	Michael.
	
	
	On 7/6/07, Barfield Steve < Steve.Barfield at uk.fujitsu.com
<mailto:Steve.Barfield at uk.fujitsu.com> > wrote: 

		Fernando,

		Thanks for finding time to reply, I know your all
busting a gut at the mo.

		 

		Firstly, just to confirm you don't think I've missed a
more obvious way of getting a set of values (say countries) into JBRMS
for use in rule conditions.

		 

		Secondly, I'm not sure I know enough yet to suggest
enhancements to JBRMS. 

		 

		Even if tables of user-defined values could be held
INSIDE JBRMS for rule conditions, it would make sense for the same
tables to be visible OUTSIDE

		JBRMS to set the data that was being submitted to the
rules. If a rule is written for country "SPA" ie Spain, this rule would
not be fired if data 

		was submitted for country "SPN".

		 

		Regards, Steve Barfield, Developer 


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