Top "Drools" questions

Drools is a business-rule management system (BRMS) with a forward-chaining-inference-based rules engine, more correctly known as a production rule system, using an enhanced implementation of the Rete algorithm.

Compare dates in drools

My rule file as below, import com.springapp.mvc.model.Person; dialect "java" rule "4" when $person:Person(((date > "20-Jan-2015") &…

java jboss drools drools-guvnor drools-fusion
Drools rule iterate collections and verify property

With Drools Rules "mvel" how to iterate over a collection and verify a property for each object in the collection?

rules drools mvel
drools rule flow

I'm having a strange issue with drools : I have the following rules : rule "is my dog a baby?" ruleflow-group "dog" …

java rules drools
Rule Engine in JavaScript

Is there any Rule engine in JavaScript? The question is in this context: Consider a web application having a form …

javascript drools rule-engine jrules
why does loading Drools 6 KIE JAR into code fail?

I'm using JBoss AS 7.1.1.Final with KIE Workbench/Drools 6.0.1., Java and Eclipse (Kepler). I need KIE Workbench (formerly Drools Guvnor) …

java jar drools drools-guvnor kie
Drools JBOSS rule Nested IF's

I am a newbie with Jboss Rule. I have gone through the documentation but I fail to find the approach …

drools business-rules
Loading and updating rules from a database in Drools 6

How would one go about loading rules from a database table at startup and updating them from the same table …

java drools
How do you pre-compile Drools rules?

I want to pre-compile my .drl files to .class files so they do not have to be compiled a run …

drools rules precompile
Retrieving facts of a specific type from working memory

Instead of retrieving all facts i need to retrieve specific type of facts from working memory. i learnt that i …

drools drools-fusion
how to load drl file from file system in drools 6.3.0

Hi I am trying to load drl file from file system in drools 6.3.0. I got the code from drools project. …

java drools