[rules-users] API's used for loading process in Eclipse

[Esteban Aliverti]

What is the content of com/simple/ProcessChangeSet.xml?

Best Regards,

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Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com


2012/1/9 Manohar Kokkula <manohar.kokkula at tcs.com>

>  Hi
>
> I am using Drool-5.2.0 final, Guvnor 5.2.0 final and
> designer-2.0-jboss.war in Drools-Guvnor.
> In Designer, I created simple process with start node, one task node, and
> end node. I made Task type of task node as "Script". I entered simple java
> code as System.out.print("Hi "); in the Script option of the task node.
> Sorry I dont know API's used for loading this process in Eclipse.
> So can any one tell me the API's used for loading this process in
> Eclipse.?
>
> I tried alot, but i am getting exceptions as:
>
> java.lang.NullPointerException
>     at
> org.drools.common.AbstractWorkingMemory.startProcess(AbstractWorkingMemory.java:1090)
>     at
> org.drools.impl.StatefulKnowledgeSessionImpl.startProcess(StatefulKnowledgeSessionImpl.java:301)
>     at com.simple.Mainclass.main(Mainclass.java:30)
>
>
> I am also sending my code:
>
>
> package com.simple;
>
> import org.drools.KnowledgeBase;
> import org.drools.agent.KnowledgeAgent;
> import org.drools.agent.KnowledgeAgentFactory;
> import org.drools.io.Resource;
> import org.drools.io.ResourceFactory;
> import org.drools.rule.FactType;
> import org.drools.runtime.StatefulKnowledgeSession;
>
> public class Mainclass {
>
>     /**
>      * @param args
>      */
>     public static void main(String[] args) {
>         // TODO Auto-generated method stub
>
>         try
>         {
>             KnowledgeBase kbase=readBase();
>             StatefulKnowledgeSession ksession =
> kbase.newStatefulKnowledgeSession();
>
>             ksession.startProcess("sayhi"); //ID of the process which is
> created in Designer
>
>            // ksession.fireAllRules();
>
>             ksession.dispose();
>
>
>         }
>         catch(Throwable t)
>         {
>
>             t.printStackTrace();
>
>
>         }
>
>     }
>     private static KnowledgeBase readBase()
>     {
>
>         KnowledgeAgent kagent =
> KnowledgeAgentFactory.newKnowledgeAgent("AccountAgent");
>
>         Resource changeset =
> ResourceFactory.newClassPathResource("com/simple/ProcessChangeSet.xml");
>
>
>         kagent.applyChangeSet(changeset);
>
>         KnowledgeBase kbase = kagent.getKnowledgeBase();
>
>     return kbase;
>
>
>     }
>
> }
>
>
>
> Please guide me in proper way.
> Thanks in advance.
>
>
>
>
> Thanks and regards,
> Manohar Kokkula
> Sub Focus Area Product Expert - BPM/BRE
> CEG - Open Source Technology Group
> YantraPark,Thane(West)
> Mumbai
> Ph:- +91 8793839453
> Mailto: manohar.kokkula at tcs.com
> Website: http://www.tcs.com
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