Re: [rules-users] KnowledgeAgent doesn't load dsl files and dslr file from a change-set correctly
Pritham,
I've experienced this issue before as well. It has to do with the way
that the KnowledgeAgent subscribes to resources. I believe behind the
scenes the resources are loaded in an arbitrary order. There is a JIRA
bug report already filed:
https://jira.jboss.org/jira/browse/JBRULES-2377
Hope this helps,
Steve
rules-users-bounces(a)lists.jboss.org wrote on 01/26/2010 01:07:29 PM:
knowledgeBase.addKnowledgePackages(knowledgeBuilder.getKnowledgePackages());
agent.applyChangeSet(ResourceFactory.newClassPathResource("change-set.xml"));
>
> return agent.getKnowledgeBase();
> }
> <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.xsd'
> >
> <add>
> <resource source='classpath:dsl/' type='DSL' />
> <resource source='classpath:rules/' type='DSLR' />
> <resource source='classpath:rules/section-A/' type='DSLR'
/>
> </add>
> </change-set>
> I get the following generic drools errors:
> ERR 103] Line 4:0 rule 'rule_key' failed predicate:
> {(validateIdentifierKey(DroolsSoftKeywords.RULE))}? in rule[7,0]: [ERR
101]
[image removed]
[rules-users] KnowledgeAgent doesn't load dsl files and dslr file
from a change-set correctly
Pritham
to:
rules-users
01/26/2010 01:10 PM
Sent by:
rules-users-bounces(a)lists.jboss.org
Please respond to Rules Users List
I have a folder in classpath:
dsl/global.dsl
rules/section-A.dslr
rules/section-A/page-1.dslr
I create a knowledge base like this:
public KnowledgeBase createKnowledgeBase() throws DroolsParserException,
IOException {
KnowledgeBuilder knowledgeBuilder = KnowledgeBuilderFactory
.newKnowledgeBuilder();
knowledgeBuilder.add(ResourceFactory
.newClassPathResource("dsl/global.dsl"),
ResourceType.DSL);
knowledgeBuilder.add(ResourceFactory
.newClassPathResource("rules/section-A.dslr"),
ResourceType.DSLR);
knowledgeBuilder.add(ResourceFactory
.newClassPathResource("rules/section-A/page-1.dslr"),
ResourceType.DSLR);
if (knowledgeBuilder.hasErrors()) {
throw new
RuntimeException(knowledgeBuilder.getErrors().toString());
}
KnowledgeBase knowledgeBase =
KnowledgeBaseFactory.newKnowledgeBase();
return knowledgeBase;
}
// code
knowledgeBase = createKnowledgeBase();
session = knowledgeBase.newStatefulKnowledgeSession();
// insert facts
session.fireAllRules();
session.dispose();
The above code works and I can get a unit test to work that processes
rules
accordingly. I can see my dslr converting to a drl using the
"drl
viewer"
correctly (provided I temporarily place the dsl file in the same
location
since expander doesn't accept a relative path).
The problem, however is when I use a change-set.xml and a
KnowledgeAgent,
> things don't work
>
> code for loading via knowledgeAgent
>
> public static KnowledgeBase loadKnowledgeBase() throws
> DroolsParserException, IOException {
> agent = KnowledgeAgentFactory.newKnowledgeAgent("msll agent");
Line 7:0 no viable alternative at input 'import' in rule Con
in rule
attribute
...
...
The rules are same, folder location is the same. I believe that drools
has a
problem resolving path (expander global.dsl) from the dslr file when
using a
KnowlegeAgent since in the earlier strategy, one could build a dsl
into
the
knowledgeBuilder directly from the classpath.
Pl suggest.
--
View this message in context: http://n3.nabble.com/KnowledgeAgent-
doesn-t-load-dsl-files-and-dslr-file-from-a-change-set-correctly-
tp139702p139702.html
Sent from the Drools - User mailing list archive at Nabble.com.
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Attachments:
- attachment.html (text/html — 6.4 KB)