[rules-users] Need Syntax help for a string match

[Greg Barton]

The rete view for the following two rules have identical structure: (One alpha node in each)

rule "Test"
	when
		t : Thing( foo == "BAR" || == "BAS" );
	then
		System.out.println( "meh" );
end

rule "Test"
	when
		t : Thing( foo in("BAR","BAS") );
	then
		System.out.println( "meh" );
end

So I guess the "|| ==" conditions are combined into one node.  I can't peek into the source at the moment to check, though.  And I don't know which is faster.  I'd guess that either is faster than regex for short lists, though.

--- On Tue, 11/17/09, Mauricio Salatino <salaboy at gmail.com> wrote:

> From: Mauricio Salatino <salaboy at gmail.com>
> Subject: Re: [rules-users] Need Syntax help for a string match
> To: "Rules Users List" <rules-users at lists.jboss.org>
> Date: Tuesday, November 17, 2009, 3:31 PM
> @Greg
> Using "in" is better that the multiple || ==
> "18" ?
> It has some relation with indexing?
> With multiple "|| == " the RETE network will
> generate one alpha node for each value right?
> 
> But for "in" I don't imagine how it works, I
> also realize that it's not included in the official
> docs.
> 
> 
> On Tue, Nov 17, 2009 at 7:22 PM,
> Jared Davis <sunray at davisprogramming.com>
> wrote:
> 
> Here are two ways to write the
> regular expression.
> 
> 
> 
>      m : Customer( age matches
> "(18|21|33|28|40|41)")
> 
> 
> 
>      m : Customer( age matches
> "(18|2[18]|33|4[01])")
> 
> 
> 
> Did you try
> 
> 
> 
>     m : Customer( age in
> ("18","21","33","28","40","41"))
> 
> 
> 
> 
> 
> 
> 
> I don't know which solution is faster.  I think that
> would
> 
> be an interesting test.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________
> 
> rules-users mailing list
> 
> rules-users at lists.jboss.org
> 
> https://lists.jboss.org/mailman/listinfo/rules-users
> 
> 
> 
> 
> -- 
>  - http://salaboy.wordpress.com
>  - http://www.jbug.com.ar
>  - Salatino "Salaboy" Mauricio -
> 
> 
> 
> -----Inline Attachment Follows-----
> 
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>