[ 
https://issues.apache.org/jira/browse/WSCOMMONS-172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12478121
 ] 

Steven La Corte commented on WSCOMMONS-172:
-------------------------------------------

I believe this issue could be resolved by implementing the following code 
change to StreamingOMSerializer.java:

CHANGE from Line 236 to 248 from:

        // Now write out the list of namespace declarations in this list that 
we constructed
        // while doing the "set" processing.
        if (writePrefixList != null) {
                for (int i=0; i<writePrefixList.size(); i++) {
                        String prefix = (String) writePrefixList.get(i);
                        String namespace = (String) writeNSList.get(i); 
                        if (prefix != null) {
                        writer.writeNamespace(prefix, namespace);
                } else {
                        writer.writeDefaultNamespace(namespace);
                }
                }
        }

TO :

        // Now write out the list of namespace declarations in this list that 
we constructed
        // while doing the "set" processing.
        if (writePrefixList != null) {
                for (int i=0; i<writePrefixList.size(); i++) {
                        String prefix = (String) writePrefixList.get(i);
                        String namespace = (String) writeNSList.get(i); 
                if (prefix != null)
                {
                    if (namespace == null)
                    {
                        writer.writeNamespace(prefix, "");
                    }
                    else
                    {
                        writer.writeNamespace(prefix, namespace);
                    }
                }
                else
                {
                    writer.writeDefaultNamespace(namespace);
                }
                }
        }

Thank you!

> Default Namespace NPE
> ---------------------
>
>                 Key: WSCOMMONS-172
>                 URL: https://issues.apache.org/jira/browse/WSCOMMONS-172
>             Project: WS-Commons
>          Issue Type: Bug
>          Components: AXIOM
>         Environment: Linux
>            Reporter: Steven La Corte
>            Priority: Blocker
>
> This is a similiar issue to WS-COMMONS 144. I believe a similiar fix needs to 
> be applied to the serialeElement method of StreamingOMSerializer that was 
> done for WS-COMMONS 144. I am running the February 23, 2007 Snapshot build 
> that I downloaded from AXIS2.
> Here is the stacktrace:
> null
> java.lang.NullPointerException
>         at java.io.Writer.write(Writer.java:126)
>         at com.bea.xml.stream.XMLWriterBase.write(XMLWriterBase.java:82)
>         at 
> com.bea.xml.stream.XMLWriterBase.writeDefaultNamespace(XMLWriterBase.java:546)
>         at 
> com.bea.xml.stream.XMLWriterBase.writeNamespace(XMLWriterBase.java:513)
>         at 
> org.apache.axiom.om.impl.MTOMXMLStreamWriter.writeNamespace(MTOMXMLStreamWriter.java:146)
>         at 
> org.apache.axiom.om.impl.serialize.StreamingOMSerializer.serializeElement(StreamingOMSerializer.java:243)
>         at 
> org.apache.axiom.om.impl.serialize.StreamingOMSerializer.serializeNode(StreamingOMSerializer.java:76)
>         at 
> org.apache.axiom.om.impl.serialize.StreamingOMSerializer.serialize(StreamingOMSerializer.java:59)
>         at 
> org.apache.axiom.om.impl.util.OMSerializerUtil.serializeByPullStream(OMSerializerUtil.java:488)
>         at 
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:823)
>         at 
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:848)
>         at 
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.serializeInternally(SOAPEnvelopeImpl.java:223)
>         at 
> org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:211)
>         at 
> org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:848)
>         at 
> org.apache.axiom.om.impl.llom.OMNodeImpl.serializeAndConsume(OMNodeImpl.java:419)
>         at 
> org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:57)
>         at 
> org.apache.axis2.transport.http.AxisRequestEntity.writeRequest(AxisRequestEntity.java:85)
>         at 
> org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:495)
>         at 
> org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:1973)
>         at 
> org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:993)
>         at 
> org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:397)
>         at 
> org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
>         at 
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
>         at 
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
>         at 
> org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:547)
>         at 
> org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:175)
>         at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:72)
>         at 
> org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:310)
>         at 
> org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:205)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:528)
>         at 
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:309)
>         at 
> org.apache.axis2.description.OutInAxisOperationClient.execute(OutInAxisOperation.java:273)
>         at 
> org.itsradsaz.loggers.radsfmsservices.RadsfmsServiceStub.setradsfmsRecords(Unknown
>  Source)
>         at org.adot.sendfmsdata2rads.GetAndSendFMSData.write(Unknown Source)
> Thanks!

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