[rules-users] Facing Problem in BRL

[Abhay B. Chaware]

Also, if I understand correctly what you are trying to do, you should probably add a variable name to the PersonDetails fact and use that in the "then" part to assign the discount. See attached.



[cid:image001.jpg at 01CC1560.4E67F020]



-----Original Message-----
From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Sumeet Karawal
Sent: Wednesday, May 18, 2011 11:47 AM
To: Rules Users List
Subject: Re: [rules-users] Facing Problem in BRL



This is the brl that I have created:





(Embedded image moved to file: pic18001.jpg)





Regards,

Sumeet Karawal

Mailto: sumeet.karawal at tcs.com







  From:       "Abhay B. Chaware" <Abhay.Chaware at kpitcummins.com>



  To:         Rules Users List <rules-users at lists.jboss.org>



  Date:       05/18/2011 11:42 AM



  Subject:    Re: [rules-users] Facing Problem in BRL



  Sent by:    rules-users-bounces at lists.jboss.org













Could you post your rule content here ?





-----Original Message-----

From: rules-users-bounces at lists.jboss.org [

mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Sumeet Karawal

Sent: Wednesday, May 18, 2011 11:38 AM

To: rules-users at lists.jboss.org

Subject: [rules-users] Facing Problem in BRL





Hi,



I am using Drools-Expert. I am having a class "Person" with data members as

age and discount.

I am trying to create a .brl. I have these statements in drools.package

package com.rules;



import com.model.PersonDetails;





and in the example.brl I am providing the details of when and then

conditions



but on execution I am getting the following error :



java.lang.RuntimeException: [4] Unable to expand: PersonDetails( age <

"20" )[6] Unable to expand:                      PersonDetails fact0 = new

PersonDetails

();[7] Unable to expand:                         fact0.setDiscount

( 10 );[8] Unable to

expand:                        insert(fact0 );





It would be helpful is somebody guide me on how execute it.



Also, I am creating the knowledgebase as:



private static KnowledgeBase createKnowledgeBase() {

 KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();

    builder.add (ResourceFactory.newClassPathResource(

"com/rules/example.brl"),ResourceType.BRL);

    if (builder.hasErrors()) {

      throw new RuntimeException (builder.getErrors().toString ());

    }

    KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();

    knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages ());

    return knowledgeBase;}





Thanks & Regards,

Sumeet Karawal

CEG - Open Source Technology Group

Tata Consultancy Services

Ph:- +912267782556

Cell:- +919833236440

Mailto: sumeet.karawal at tcs.com

Website: http://www.tcs.com

____________________________________________

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                                     Business Solutions

                                     Outsourcing

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