[rules-dev] allowing self joining combinations

[Terry Laurenzo]

This may be a silly question, but I had taken the non-self-joining  
nature of Drools for granted.  Aside from disabling the option in  
RuleBaseConfiguration, how would one write a rule that would not self- 
join (ie. the old behavior)?

(Say I wanted two different facts to match:
	when
		Foo()
		Foo()
instead of the new default which allows the same fact to match)

Thanks.
Terry

On Mar 26, 2007, at 12:26 PM, Edson Tirelli wrote:

>    Michael,
>
>    In 3.1 the default is now to allow self joins (we need to add BIG
> warnings to the documentation due to this change) and an option was
> added to RuleBaseConfiguration to remove self joins.
>
>    []s
>    Edson
>
> Michael Neale wrote:
>
> > I know that we by default remove self joins, ie:
> >
> > when
> >   Foo()
> >   Foo()
> >
> > will not match for the same instance of Foo - is it possible to turn
> > that off? I know we talked about it at one point, not sure what the
> > latest position is (someone was asking me and I can't recall what  
> our
> > final position is). FYI Jess and Jrules both self join by default.
> >
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>
> --
> Edson Tirelli
> Software Engineer - JBoss Rules Core Developer
> Office: +55 11 3124-6000
> Mobile: +55 11 9218-4151
> JBoss, a division of Red Hat @ www.jboss.com
>
>
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>
>
> -- 
>   Edson Tirelli
>   Software Engineer - JBoss Rules Core Developer
>   Office: +55 11 3124-6000
>   Mobile: +55 11 9218-4151
>   JBoss, a division of Red Hat @ www.jboss.com
> _______________________________________________
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