Suggestion (DSL first) by Edson works perfectly. Thanks a lot Edson!.

Thanks

Vijay

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Friday, August 14, 2009 12:24 PM
To: Rules Users List
Subject: Re: [rules-users] Drools 5 - Not sure why this simple DSL not working

   Not true. [consequence] and [then] are synonyms, and [consequence] is the preferred way.

   I think the problem is the order in which you are loading the resources. Add the DSL before adding the DSLR.

   []s
   Edson

2009/8/14 Premkumar Stephen <prem18@gmail.com>

you need to change

[consequence][]LOGGING=System.out.println("hello");

to
[then][]LOGGING=System.out.println("hello");
Regards,
Prem

2009/8/14 Vijay K Pandey <VPandey@mdes.ms.gov>

Thanks, but I have gone through this before and I don’t see any issue in the DRL & DSL file I wrote. Also within the eclipse plug-in, “Rete View” comes up fine for the DRL but while running as java application, “Unable to expand:” error comes.

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Premkumar Stephen
Sent: Friday, August 14, 2009 11:53 AM
To: Rules Users List
Subject: Re: [rules-users] Drools 5 - Not sure why this simple DSL not working

http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-expert/html_single/index.html Section 4.10.2

2009/8/14 Vijay K Pandey <VPandey@mdes.ms.gov>

Hi,

I am trying to get a very simple DSL working but all the time it gives the error of Unable to expand: If I take the DSL away everything runs fine, not sure whats going on.

So what I did is strip away all other stuff and just added a plain simple DSL -- but still the same error

Unable to expand: LOGGING

DSLR file Contents:

package test.rules

dialect "mvel"

expander testing.dsl

rule "TestingCheck"

when

then

LOGGING

end

DSL file content

[consequence][]LOGGING=System.out.println("hello");

ChangeSet XML file (test_changeset.xml)

<change-set xmlns='http://drools.org/drools-5.0/change-set'

xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'

xs:schemaLocation='http://drools.org/drools-5.0/change-set drools-change-set-5.0.xsd' >

<add>

</add>

</change-set>

I am loading the changeset set via

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

kbuilder.add(ResourceFactory.newClassPathResource("test_changeset.xml"), ResourceType.CHANGE_SET);

Any hint what is going wrong?

Thanks

Vijay

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Edson Tirelli
JBoss Drools Core Development
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