[rules-users] Adding a custom operator to drools?

Michael Zimmermann list at incunabulum.de
Fri Sep 12 06:54:49 EDT 2008


Hi Edson,

thanks for the quick reply...

Edson Tirelli wrote:
> It depends if you are talking about Drools 4 or 5. You are right 
> about Drools 4. Drools 5 has "quasi-pluggable" operators... hehehe :)

Sorry, didn't mention it. I was talking about the 4.0.x series. This
leads to the following.

> For more info, look at the EvaluatorDefinition interface in Drools 5 
> and its several implementations for examples.

Well, how stable and usable (eclipse integration?) is drools 5? (I am
using the drools rule engine mostly; not the BRMS)

While I may not need top notch stability and can cope with some changes
to the codebase over time ( research project ), Drools only is one part
of a pretty complicated application. So far, this was the major reason
for not having a closer look in the new version.

> BTW,  most important thing that I forgot to mention: we obviously are
>  interested in feedback and contributions on the feature, from simple
>  ideas and suggestions to actual patches and improvements!

Well, we agree here. The previous two posts were ment to start some
discussion. Now - as I need this feature rather sooner than later - I am
looking into the implementation. JIRA ticket with more will follow if I
am sucessfull.

cu, Michael



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