[rules-users] Drools 6.x and Custom Operators(Evaluators) and Accumulators - Using them as regular functions?

[mattmadhavan]

Hello Mark et all,
I referred the source of the class (FOr API etc) of the built-in evaluator
below :

*org.drools.core.base.evaluators.MatchesEvaluatorsDefinition*
and* drools.packagebuilder.conf*



It was a breeze, took me less than 10 minutes! 

As Mark Proctor mentioned, lots of plumbing has been taken care of in 6.1
and actually this port was really nice and easy.

I was able to port my old *inlist*operator from Drools 5.3 to 6.1

Now I am willing to recommend my client to use Drools 6.x for our forth
coming major initiative. We have a custom in-house built Rule Engine which I
am trying to replace with Drools. The "Custom Evaluator" is a major thing
for as as all its really powerful and all the analysts need this. 

Without this *inlist<.b> operator I am not going anywhere with Drools with
my client.* We will be processing in excess of 30 million FACTS*, (Stateless
Session) using Drools when I am done converting the project to use Drools!

Thanks for all

Matt'M 



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