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From "Srijith Kochunni (JIRA)" <j...@apache.org>
Subject [jira] Created: (AXIS2-4812) CLONE -NullPointerException in internalSerializeAndConsume
Date Fri, 03 Sep 2010 11:11:33 GMT
CLONE -NullPointerException in internalSerializeAndConsume
----------------------------------------------------------

                 Key: AXIS2-4812
                 URL: https://issues.apache.org/jira/browse/AXIS2-4812
             Project: Axis2
          Issue Type: Bug
          Components: om
    Affects Versions: 1.4
         Environment: A centralized server hosting the web -service, with multiple clients
consuming the same. JAVA 1.6 runtime. Linux Platform. Axis2 is bundleized in an OSGi runtime.
            Reporter: Srijith Kochunni
            Priority: Critical


We invoke one of our our web services using Axis2, without any databinding, because the response
payload might be too huge. This is how we invoke the same.

     
			clientOptions = new Options();
			clientOptions.setCallTransportCleanup(true);
	        	clientOptions = setReuseHTTPClient(clientOptions);
	

			EndpointReference targetEPR = new EndpointReference(endpointURI);
			clientOptions.setTo(targetEPR);
			clientOptions.setAction(wsAction);

			setHTTPKeepAlive(clientOptions, keepAlive);
			ServiceClient svcClient = new ServiceClient();
			svcClient.setOptions(clientOptions);

			result = svcClient.sendReceive(requestOmElement);

The request OM Element is derived from the Adb generated source code, from the WSDL. It was
working correctly for quite some time, but recently randomly it is seen that we get this following
exception

 java.lang.NullPointerException
        at org.apache.axiom.om.impl.llom.OMSourcedElementImpl.internalSerializeAndConsume(OMSourcedElementImpl.java:664)
        at org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:918)
       at org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:947)
        at org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.serializeInternally(SOAPEnvelopeImpl.java:240)
        at org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:228)
        at org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:947)
       at org.apache.axiom.om.impl.llom.OMNodeImpl.serializeAndConsume(OMNodeImpl.java:471)
        at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:79)
        at org.apache.axis2.transport.http.AxisRequestEntity.writeRequest(AxisRequestEntity.java:84)
        at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:499)
        at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2114)
        at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096)
        at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
        at org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:542)
        at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:189)
        at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:75)
        at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:364)
        at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:208)
        at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
        at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:401)
       at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228)
        at org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
        at org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:548)
        at org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:528)

Following this we looked into the Axiom sources as well, and see that in OMSourcedElementImpl,
the dataSource is becoming null for some reason. We are creating a new datasource and in our
auto-generated code, we could see that the data Source is set in the request OMElement

public org.apache.axiom.om.OMElement getOMElement (
               final javax.xml.namespace.QName parentQName,
               final org.apache.axiom.om.OMFactory factory) throws org.apache.axis2.databinding.ADBException{


        
                org.apache.axiom.om.OMDataSource dataSource =
                       new org.apache.axis2.databinding.ADBDataSource(this,MY_QNAME){

                 public void serialize(org.apache.axis2.databinding.utils.writer.MTOMAwareXMLStreamWriter
xmlWriter) throws javax.xml.stream.XMLStreamException {
                       GetLocationsRequest.this.serialize(MY_QNAME,factory,xmlWriter);
                 }
               };
               return new org.apache.axiom.om.impl.llom.OMSourcedElementImpl(
               MY_QNAME,factory,dataSource);
            
       }

       This issue has become very critical for us and any help / ideas / patches would be
much appreciated. We had posted the same on Axis-user mailing list. There have been no responses
so far. We are willing to provide any further information required.

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