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From "Scott S. McCoy (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-3836) Missing output parameters in wrapped method implementations generate NPE
Date Thu, 29 Sep 2011 21:11:46 GMT
Missing output parameters in wrapped method implementations generate NPE
------------------------------------------------------------------------

                 Key: CXF-3836
                 URL: https://issues.apache.org/jira/browse/CXF-3836
             Project: CXF
          Issue Type: Bug
          Components: JAX-WS Runtime
    Affects Versions: 2.4.2, 2.3.6
            Reporter: Scott S. McCoy


When implementing an interface generated from a WSDL which has an output parameter stored
in a holder, as in

{{{
        @WebParam(mode = WebParam.Mode.OUT, name = "created", targetNamespace = "")
        javax.xml.ws.Holder<java.lang.Boolean> created
}}}

Failing to provide a value in the supplied holder results in an NPE, originating from the
runtime-generated WrapperTypeHelper class, e.g.

{{{
java.lang.NullPointerException
	at com.vindicia.soap.v3_6.account.UpdateResponse_WrapperTypeHelper1.createWrapperObject(Unknown
Source)
	at org.apache.cxf.jaxws.interceptors.WrapperClassOutInterceptor.handleMessage(WrapperClassOutInterceptor.java:105)
}}}

This fails to inform the user of the cause of the issue or how to diagnose it.  Instead, required
parameters should be validated to atleast be not null before they are assumed to have been
provided.

I have validated this behavior on 2.4.2, 2.4.0 and 2.3.6.

The work-around for the user is of course to provide a non-null value in the holder object.

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