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>
<resource
source='classpath:test/rules/test.drl' type='DSLR' />
<resource
source='classpath:test/rules/testing.dsl' type='DSL' />
</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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