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From "Kevin Conroy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AXIS2-1349) RPCMessageReceiver misbehaviour
Date Mon, 16 Oct 2006 14:01:35 GMT
    [ http://issues.apache.org/jira/browse/AXIS2-1349?page=comments#action_12442606 ] 
            
Kevin Conroy commented on AXIS2-1349:
-------------------------------------

I also get a NullPointerException from lack-of-null check on line 132 when trying to execute
a Rest service that has a void return type:

java.lang.NullPointerException
	at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:133)
	at org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.receive(AbstractInOutSyncMessageReceiver.java:39)
	at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:502)
	at org.apache.axis2.transport.http.util.RESTUtil.invokeAxisEngine(RESTUtil.java:150)
	at org.apache.axis2.transport.http.util.RESTUtil.processGetRequest(RESTUtil.java:140)
	at org.apache.axis2.transport.http.AxisRESTServlet.doGet(AxisRESTServlet.java:45)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)


If I give the service a non-void return type (e.g. empty String) then everything works fine.

> RPCMessageReceiver misbehaviour
> -------------------------------
>
>                 Key: AXIS2-1349
>                 URL: http://issues.apache.org/jira/browse/AXIS2-1349
>             Project: Apache Axis 2.0 (Axis2)
>          Issue Type: Bug
>          Components: rpc
>    Affects Versions: 1.1
>            Reporter: Ruwan Linton
>         Assigned To: Deepal Jayasinghe
>
> I have writen a void setName operation and engaged the RPCMessageReceiver in the services.xml
> When I tried to invoke this method using fireAndForget it worked but when I tried to
do sendRecieve Axis2 engine gave me an AxisFault
> org.apache.axis2.AxisFault: Exception occurred while trying to invoke service method
setName
> 	at org.apache.axis2.description.OutInAxisOperationClient.execute(OutInAxisOperation.java:294)
> 	at org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:569)
> 	at org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:500)
> 	at org.apache.axis2.messageReciever.test.client.Axis2TestathonClient.main(Axis2TestathonClient.java:38)
> 	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:585)
> 	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
> This is because a npe is occured in the RPCMessageReceiver because it is trying to get
some parameters from the outaxisMessage without checking weather it is null or not.
> I think Axis engine should not fail at this point.
> <<Code from the RPCMessageReceiver
>      
> L: 130           // Handling the response
> L: 131           AxisMessage outaxisMessage = op.getMessage(WSDLConstants.MESSAGE_LABEL_OUT_VALUE);
> L: 132           if (inAxisMessage != null) {
> L: 134               messageNameSpace = outaxisMessage.getElementQName().getNamespaceURI();
> L: 135           }
> >>

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