[rules-users] Problem creating package - validateUniqueRuleNames(PackageBuilder.java:830)

[Saleem Lakhani]

Following is my code:

 

KnowledgeBuilderConfiguration kbc =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();

kbc.setProperty("drools.dialect.java.compiler", "JANINO");

KnowledgeBuilder builder = null;

builder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);

 

Reader drlSource = new
InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDrlSourc
e()));  //ruleset.getDrlSource() = com/cit/myDrl.dslr

Reader dslSource = new
InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDslSourc
e()));

 

builder.add(ResourceFactory.newReaderResource(dslSource),
ResourceType.DSL);

builder.add(ResourceFactory.newReaderResource(drlSource),
ResourceType.DSLR);

 

 KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();

 kbase.addKnowledgePackages(builder.getKnowledgePackages());

 

 

no matter what I type in my dslr (drl) file I get the following
exception on the highlighted line; ANY IDEA????

I have 1 rule or No rule it still throws the same exception. Does it
have to do with any jar files?

 

Caused by: java.lang.NullPointerException

     at
org.drools.compiler.PackageBuilder.validateUniqueRuleNames(PackageBuilde
r.java:830)

     at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:555)

     at
org.drools.compiler.PackageBuilder.addPackageFromDslr(PackageBuilder.jav
a:355)

     at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.j
ava:461)

     at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)

 

 

saleem

 

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