[rules-users] Getting Null pointer exception for applying change set

[Rana]

Strangely it did work for this

kagent.applyChangeSet(ResourceFactory.newFileResource(ruleFile));

but I get this exception now.

My change set file has folder locations of drools files 



java.lang.RuntimeException: Unable to parse ChangeSet
	at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:448)
	at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:180)
	at
com.drfirst.pi.affiliate.drools.DroolsKnowledgeObject.getKnowledgeBase(DroolsKnowledgeObject.java:64)
	at
com.drfirst.pi.affiliate.drools.DroolsKnowledgeObject.getKnowledgeSession(DroolsKnowledgeObject.java:79)
	at com.drfirst.pi.affiliate.drools.FireRules.<clinit>(FireRules.java:27)
	at
com.drfirst.pi.affiliate.drools.test.DroolsRuleTest.test(DroolsRuleTest.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at junit.framework.TestCase.runTest(TestCase.java:168)
	at junit.framework.TestCase.runBare(TestCase.java:134)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at junit.framework.TestSuite.runTest(TestSuite.java:243)
	at junit.framework.TestSuite.run(TestSuite.java:238)
	at
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
	at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.IllegalArgumentException:
'D:/Venkat/workspace/pi-affiliate-drools-rule-engine/src/main/rules/sample-md/'
path is malformed
	at org.drools.io.impl.UrlResource.<init>(UrlResource.java:86)
	at org.drools.xml.changeset.ResourceHandler.start(ResourceHandler.java:86)
	at
org.drools.xml.ExtensibleXmlParser.startElement(ExtensibleXmlParser.java:385)
	at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
	at
com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
	at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:739)
	at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:377)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
	at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
	at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
	at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
	at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
	at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
	at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
	at org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:296)
	at org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:175)
	at org.drools.xml.XmlChangeSetReader.read(XmlChangeSetReader.java:70)
	at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:446)
	... 24 more
Caused by: java.net.MalformedURLException: unknown protocol: d
	at java.net.URL.<init>(URL.java:574)
	at java.net.URL.<init>(URL.java:464)
	at java.net.URL.<init>(URL.java:413)
	at org.drools.io.impl.UrlResource.<init>(UrlResource.java:83)
	... 44 more
java.lang.RuntimeException: Unable to parse ChangeSet
	at
org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:453)
	at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:180)
	at
com.drfirst.pi.affiliate.drools.DroolsKnowledgeObject.getKnowledgeBase(DroolsKnowledgeObject.java:64)
	at
com.drfirst.pi.affiliate.drools.DroolsKnowledgeObject.getKnowledgeSession(DroolsKnowledgeObject.java:79)
	at com.drfirst.pi.affiliate.drools.FireRules.<clinit>(FireRules.java:27)
	at
com.drfirst.pi.affiliate.drools.test.DroolsRuleTest.test(DroolsRuleTest.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at junit.framework.TestCase.runTest(TestCase.java:168)
	at junit.framework.TestCase.runBare(TestCase.java:134)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at junit.framework.TestSuite.runTest(TestSuite.java:243)
	at junit.framework.TestSuite.run(TestSuite.java:238)
	at
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
	at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Thanks.



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