[rules-users] Pass Parameter to drools file dynamically

[Richa]

I created a fact type in my code but I am getting exceptions: 

declare Airline
 name:String
end

and this is the java code that I am using.

DroolsXPathEvaluatorFactory evaluatorFactory=new
DroolsXPathEvaluatorFactory();

evaluatorFactory.setPackageStream(TestMain.class.getResourceAsStream("rule1.drl"));
	
	KnowledgeBase kbase=KnowledgeBaseFactory.newKnowledgeBase();
	FactType airlineType=kbase.getFactType("droolshelloworld", "Airline");
	Object ob=airlineType.newInstance();
	airlineType.set(ob, "name", "//Airline");
	StatefulSession
ksession=evaluatorFactory.getRuleBase().newStatefulSession(true);
	ksession.insert(ob);
	ksession.fireAllRules();
	
	XPathEvaluator evaluator=evaluatorFactory.create();
	evaluator.evaluate(TestMain.class.getResourceAsStream("test.xml"));

This is giving me exception. Please tell me what am I doing wrong here?




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