Figured out the problem. Didn't have Maven installed as a plug-in
correctly. The book I'm using to learn Drools, didn't include that step.
Terry Moriarty wrote:
> This isn't my code. It's created when a Drools project is created in
> Eclipse. I guess that's why this is so frustrating. It's supposed to
> demonstrate a very simple Drools program and I can't get it to work.
> It's hard to debug someone else's code when you don't know the
> language yet.
>
> Code is kSession.insert(message);
>
> Thanks
>
> sdjoe [via Drools] wrote:
>
>> Hard to say without seeing your code. Can you post it here and point
>> out where the NPE is happening on line 23?
>>
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>
>------------------------------------------------------------------------
>
>package com.sample;
>
>import org.kie.api.KieServices;
>import org.kie.api.runtime.KieContainer;
>import org.kie.api.runtime.KieSession;
>
>/**
> * This is a sample class to launch a rule.
> */
>public class DroolsTest {
>
> public static final void main(String[] args) {
> try {
> // load up the knowledge base
> KieServices ks = KieServices.Factory.get();
> KieContainer kContainer = ks.getKieClasspathContainer();
> KieSession kSession =
> kContainer.newKieSession("ksession-rules");
>
> // go !
> Message message = new Message();
> message.setMessage("Hello World");
> message.setStatus(Message.HELLO);
> kSession.insert(message);
> kSession.fireAllRules();
> } catch (Throwable t) {
> t.printStackTrace();
> }
> }
>
> public static class Message {
>
> public static final int HELLO = 0;
> public static final int GOODBYE = 1;
>
> private String message;
>
> private int status;
>
> public String getMessage() {
> return this.message;
> }
>
> public void setMessage(String message) {
> this.message = message;
> }
>
> public int getStatus() {
> return this.status;
> }
>
> public void setStatus(int status) {
> this.status = status;
> }
>
> }
>
>}
>
>
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