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From "Christophe Dumont (JIRA)" <j...@apache.org>
Subject [jira] Created: (AXIS2-3841) wsdl2java fails with NullPointException due to WSDL4J.Defintion returning null targetNamespace
Date Fri, 06 Jun 2008 08:10:45 GMT
wsdl2java fails with NullPointException due to WSDL4J.Defintion returning null targetNamespace
----------------------------------------------------------------------------------------------

                 Key: AXIS2-3841
                 URL: https://issues.apache.org/jira/browse/AXIS2-3841
             Project: Axis 2.0 (Axis2)
          Issue Type: Bug
          Components: codegen
    Affects Versions: 1.4
         Environment: Windows XP, Java 1.5
            Reporter: Christophe Dumont


wsdl2java is failing with the stack trace that you can find at the end of this note.
It appears this is linked with the fact the wsdl I received from a service provider doesn't
have any targetNamespace defined.
If I modify the wsdl myself to add a targetNamespace all is ok, except when AXIS2 handles
the response as it throws an exception about the namespace not being the one expected; the
response message having no namespace... I do also wonder what is the use of the "-sp" option
in the wsdl2java as it doesn't seem doing anything.

Anyway I looked into the source code and found out that the WSDL4J library has a Defintion
class that you are using, and that the method getTargetNamespace() is returning null. I "patched"
the WSDL4J DefintionImpl to guarantee in case of null that a "" (empty string) is returned.
This is because you are making a lot of calls on this class. The java package can then be
generated and the WebService is working fine.

It may be good to secure this null variable as you are doing a lot of string manipulation.
I don't know if you could make sure that you always load an empty string in the Definition
class in place of null, or if an issue should be raised to the WSDL4J team.
Thank you for looking at this.

[ERROR]
java.lang.NullPointerException
        at org.apache.axis2.addressing.wsdl.WSDL11DefaultActionPatternHelper.generateActionFromInputElement(WSDL11DefaultActionPatternHelper.java:71)
        at org.apache.axis2.addressing.wsdl.WSDL11ActionHelper.getActionFromInputElement(WSDL11ActionHelper.java:67)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateOperations(WSDL11ToAxisServiceBuilder.java:1312)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populatePortType(WSDL11ToAxisServiceBuilder.java:590)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateEndpoints(WSDL11ToAxisServiceBuilder.java:469)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateService(WSDL11ToAxisServiceBuilder.java:363)
        at org.apache.axis2.description.WSDL11ToAllAxisServicesBuilder.populateAllServices(WSDL11ToAllAxisServicesBuilder.java:107)
        at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.<init>(CodeGenerationEngine.java:147)
        at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
        at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
Exception in thread "main" org.apache.axis2.wsdl.codegen.CodeGenerationException
: Error parsing WSDL
        at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.<init>(CodeGenerationEngine.java:153)
        at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
        at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
Caused by: org.apache.axis2.AxisFault
        at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateService(WSDL11ToAxisServiceBuilder.java:397)
        at org.apache.axis2.description.WSDL11ToAllAxisServicesBuilder.populateAllServices(WSDL11ToAllAxisServicesBuilder.java:107)
        at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.<init>(CodeGenerationEngine.java:147)
        ... 2 more
Caused by: java.lang.NullPointerException
        at org.apache.axis2.addressing.wsdl.WSDL11DefaultActionPatternHelper.generateActionFromInputElement(WSDL11DefaultActionPatternHelper.java:71)
        at org.apache.axis2.addressing.wsdl.WSDL11ActionHelper.getActionFromInputElement(WSDL11ActionHelper.java:67)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateOperations(WSDL11ToAxisServiceBuilder.java:1312)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populatePortType(WSDL11ToAxisServiceBuilder.java:590)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateEndpoints(WSDL11ToAxisServiceBuilder.java:469)
        at org.apache.axis2.description.WSDL11ToAxisServiceBuilder.populateService(WSDL11ToAxisServiceBuilder.java:363)
        ... 4 more

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