[rules-users] About ReteOO.

[Edson Tirelli]

   Oana,

   Yes, the behavior of eval and not nodes are equivalent to the test 
and not nodes from Jess.
   Yes, we use initial-fact as needed, but it is transparent to the 
user.You don't need to do anything to make your rules whose first CE is 
NOT/EXISTS/ACCUMULATE/FORALL/etc to work.
   Yes, LIAN adapts a single fact into a tuple for propagating down the 
network. For instance:

Rule
when
   Person( $likes : likes )
   Cheese( type == $likes )
then
end

   As you can see, Person instance enters the network, then propagates 
to a Join node, but the Join node expects a tuple from the left, so we 
use LIAN to transform the left most fact from the network into a tuple 
to propagate down the beta network.

   Wanna start contributing in core development with us? :) Lots of 
opportunities... :)

   Regards,
     Edson

nicolae oana wrote:

> Hi all!
>
> Today I've read about how JBossRules implements Rete algorithm.
> Does the eval and not nodes from JBossRules act the same way as the 
> test and not nodes act in Jess? JBoss uses the assertion of 
> initial-fact to handle with the left input of those nodes, as Jess uses?
>
> What is the purpose of the LeftInputNodeAdapter? (to provide the left 
> input for the BetaNode as a single object tuple?) I don't think I 
> understand what you meant by this.
>
> Regards,
>     Oana.
>
>
>
>
>
>
> ------------------------------------------------------------------------
> Don't pick lemons.
> See all the new 2007 cars 
> <http://autos.yahoo.com/new_cars.html;_ylc=X3oDMTE0OGRsc3F2BF9TAzk3MTA3MDc2BHNlYwNtYWlsdGFncwRzbGsDbmV3Y2Fycw--> 
> at Yahoo! Autos. 
> <http://autos.yahoo.com/new_cars.html;_ylc=X3oDMTE0OGRsc3F2BF9TAzk3MTA3MDc2BHNlYwNtYWlsdGFncwRzbGsDbmV3Y2Fycw--> 
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>rules-users mailing list
>rules-users at lists.jboss.org
>https://lists.jboss.org/mailman/listinfo/rules-users
>  
>


-- 
 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