[rules-users] Facing Problem in BRL

Wed May 18 05:11:59 EDT 2011

I tried to use this also but now I am getting different error:
java.lang.RuntimeException: [8,1]: [ERR 102] Line 8:1 mismatched input
'WHEN'

Also, what is the significance of the first line. I have copied it as the
same.

My code is :

      String curDir = System.getProperty("user.dir");
	String fileName = curDir + "\\src\\com\\rules\\drools.package";
	String rulePackageContent = FileUtils.readFileToString(new File
(fileName));
	fileName = curDir + "\\src\\com\\rules\\example.brl";
	String brl = FileUtils.readFileToString(new File(fileName));
	BRLPersistence read = BRXMLPersistence.getInstance();
	BRLPersistence write = BRDRLPersistence.getInstance();
	String outputDRL = rulePackageContent + write.marshal(read.unmarshal
(brl));
	KnowledgeBuilder builder = KnowledgeBuilderFactory.
newKnowledgeBuilder();
	builder.add(ResourceFactory.newReaderResource(new StringReader
(outputDRL)), ResourceType.DRL);

    if (builder.hasErrors()) {
      throw new RuntimeException (builder.getErrors().toString ());
    }
    KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
    knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages ());

I don't know where I am getting this wrong.

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 01:09 PM                                                                                      

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

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

I haven't been able to get "ResourceType.BRL" to work. This is how I do
it ..

String curDir = System.getProperty("user.dir");
String fileName = curDir + "\\src\\main\\rules\\drools.package";
String rulePackageContent = FileUtils.readFileToString(new File(fileName));

fileName = curDir + "\\src\\main\\rules\\eligibility.brl";
String brl = FileUtils.readFileToString(new File(fileName));
BRLPersistence read = BRXMLPersistence.getInstance();
BRLPersistence write = BRDRLPersistence.getInstance();
String outputDRL = rulePackageContent + write.marshal(read.unmarshal(brl));

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newReaderResource(new StringReader
(outputDRL)), ResourceType.DRL);

Try this.

-abhay

-----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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Notice: The information contained in this e-mail
message and/or attachments to it may contain 
confidential or privileged information. If you are 
not the intended recipient, any dissemination, use, 
review, distribution, printing or copying of the 
information contained in this e-mail message 
and/or attachments to it are strictly prohibited. If 
you have received this communication in error, 
please notify us by reply e-mail or telephone and 
immediately and permanently delete the message 
and any attachments. Thank you