[rules-users] Knowledge Builder error

[Fnu Mahalakshmi]

Hi,

I am using the following code for adding DSLs to my knowledge base and I keep getting following error
My code :

    private KnowledgeBase loadRules(String[]  rules) throws Exception{

      KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();
      builder.add(ResourceFactory.newClassPathResource("/sample-dsl.dsl"),ResourceType.DSL);
      builder.add(ResourceFactory.newClassPathResource("/Rule1.dslr"), ResourceType.DSLR);
        if (builder.hasErrors()) {
        throw new RuntimeException(builder.getErrors().toString());
        }
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
        knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages());
        return knowledgeBase;
}

Error Stack:
Exception in thread "main" java.lang.NoSuchMethodError: org.drools.compiler.PackageBuilder.addKnowledgeResource(Lorg/drools/io/Resource;Lorg/drools/builder/ResourceType;Lorg/drools/builder/ResourceConfiguration;)V
      at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:30)
      at com.org.RuleRunner.loadRules(RuleRunner.java:51)
      at com.org.RuleRunner.runStatelessRules(RuleRunner.java:127)
      at com.org.RulesTest.main(RulesTest.java:41)


I have added all the required .jars for processing knowledge builder.
I have the drools-compiler.jar5.0.1 added to my classpath ( I downloaded it online)

Could you point me towards where I could download  the correct drools-compiler and drools-core.jar files from?? Seems like the ones I have added to my classpath are not in harmony with each other.

Thank you. Please help.
M
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