[rules-users] Getting NullPointer Exception while sending an response back from Guvnor using web services

[Jervis Liu]

The stack trace does not tell much, the cause could be anything. Could 
you be more specific on what you have done please: " tried invoking the 
same from a webservice by including this guvnor project as a JAR". You 
exposed what as web services? and how?

Cheers,
Jervis

On 2010/8/5 20:40, Vignesh wrote:
>
> Hi,
>
> I have defined a set of rules using DSL and corresponding rules in Guvnor
> and i have tested the same using a standalone code which is working fine.
> But when i tried invoking the same from a webservice by including this
> guvnor project as a JAR Im getting a NullPointerException while sending the
> response back from Guvnor to the web service client,
>
> below is the exception stack i got in server side,
>
> ERROR - AxisServlet.doPost(172) |
> java.lang.NullPointerException
>          at
> org.apache.axis2.clustering.context.DefaultContextManager.updateContexts(DefaultContextManager.java:81)
>          at
> org.apache.axis2.clustering.context.Replicator.replicate(Replicator.java:81)
>          at
> org.apache.axis2.receivers.AbstractMessageReceiver.replicateState(AbstractMessageReceiver.java:71)
>          at
> org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:41)
>          at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:100)
>          at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176)
>          at
> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
>          at
> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:133)
>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
>          at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>          at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>          at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>          at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>          at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>          at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>          at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>          at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>          at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
>          at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
>          at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process
> Http11Protocol.java:588)
>          at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
>          at java.lang.Thread.run(Thread.java:595)
>
> and the below is the exception stack in client side,
>
> org.apache.axis2.AxisFault: java.lang.NullPointerException
> 	at
> org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:512)
> 	at
> org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:370)
> 	at
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:416)
> 	at
> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228)
> 	at
> org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
> 	at org.tempuri.Service1Stub.CheckEntitlement(Service1Stub.java:740)
> 	at ws.client.testClient.main(testClient.java:73)
>
> If any one has faced similar issue and fixed the same, please help me out it
> resolving the same or any pointers for fixing this issue would be of great
> helpful.
>
> Thanks,
> Vignesh