[rules-dev] Event type and default entry-point

[Edson Tirelli]

   Yes, I think it is a nice idea. I also want to add rule attributes
(and package defaults) for entry points, in case all patterns in a
rule/package should match a specific entry point.

   Edson

2010/11/18 Wolfgang Laun <wolfgang.laun at gmail.com>:
> Using
>    X(...) from entry-point "y"
> may be used for selecting a subset of events. Given that in STREAM mode
> events coming from a single entry-point must be ordered by timestamp but
> that it's not necessary to uphold this restriction across different entry
> points, I have come up with a use case or two where I have an
> n:1-relationship between event types and one entry-point, i.e., all events
> of a type are inserted via one entry point, and this results in the
> question:
>
> Would it be possible to implement the definition of the default entry point
> for an Event or Fact type via a metadata attribute, e.g.:
>    declare X
>      @role( event )
>      @entry-point( y )
>    end
> so that this
>    a) declares the entry-point in the KnowledgeBase (the same way from
> entry-point "x" does)
>    b) removes the need to use from entry-point with all patterns referring
> to X
>    c) would still let me override the entry point with a "from entry-point"
> clause.
>
> If not discouraged, I'll open a JIRA for an enhancement.
>
> Wolfgang
>
> BTW: Java Zone Trailer, http://www.youtube.com/watch?v=8Px-GHPxB4I (NSFW ;-)
>
>
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-- 
  Edson Tirelli
  JBoss Drools Core Development
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