Top "Drools" questions

how to express one object is null when I use drools rule engine

I want to know how can I express one object is null on the left hand side when I use …

drools business-rules

Drools: insertLogical and retract

This is a follow up on my previous question. I have a decision tree in the following form: and I …

java drools decision-tree expert-system

Passing parameters in drools

How can I pass a parameter to set the comparing value of age(18 should be dynamic) in the below drools …

java parameters jboss drools rule-engine

Drools: How to use an enum in the lhs of a rule?

I am having difficulties in writing a rule which match with an enum value in its lhs. For example, if …

java drools

Drools.NET vs Windows Workflow Foundation (WF)

I am currently in the process of searching for a rules engine that works in .NET. Our logic is pretty …

.net workflow-foundation drools

kie workbench deploy war not working (tomcat)

I have downloaded the kie workbench and extracted kie-drools-wb-distribution-wars-6.2.0.Final-tomcat7.war. I've never used tomcat before, but I wanted to …

java tomcat drools kie

What is Drools Kie?

I need help in KIE API. Need to know that what it is and is there any tutorial available to …

java drools jbpm kie

Drools disable a rule at runtime

I'm starting a project whith Drools and Drools Guvnor. My rules are deployed in drools guvnor. My rule engine instance …

drools rule-engine

Mvel evaluation

Problem Statement: Say I have a expression (a + b + c), and I want to calculate its value and assign to …

java drools mvel

JBoss Drools insert facts from DRL

I need my WorkingMemory to be aware of facts which are created in the DRL as follows: rule "Your First …

java memory rules drools fact