[rules-users] From v 3.0.6 to 4.0.0

[Edson Tirelli]

   Yes, two main reasons were the alignment with industry products and the
small perf impact.

   []s
   Edson

2007/5/15, Mark Proctor <mproctor at codehaus.org>:
>
>  I can't remember them, but at the time we where shown some use cases that
> worked that way. Also we have the problem that our engine works differently
> to other engines, so we decided align with the industry norm and allow
> people to choose what they want. Oh and identity removal has a slight
> performance impact, as it means it always has to performane an identity
> check on each join attempt, even if the scenario will never likely occur for
> the current rule definition.
>
> Mark
> Geoffrey Wiseman wrote:
>
> On 5/15/07, Edson Tirelli <tirelli at post.com> wrote:
> >
> >    Version 3.0.x prevents by default a single fact from matching
> > multiple patterns. For a couple of reasons we had to change the default in
> > 4.0 to allow a single fact to match multiple patterns. If you don't want
> > this to happen, you can use one of the following approaches:
>
>
> Huh - shades of Drools 2.X.
>
> If you don't mind me asking, what are the 'couple of reasons'?  If there
> are reasons, then people might want to know before choosing to, for
> instance, turn on the system property.
>
>    - Geoffrey
> --
> Geoffrey Wiseman
>
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-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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