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https://issues.apache.org/jira/browse/CXF-8114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16955329#comment-16955329
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Stephan Wienczny commented on CXF-8114:
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The underlying problem is an ambiguity between the WSDL and XSD-specs. A
element may be empty (as in the WSDL above) or left out of the message body as
[~deki] suggests. Both should result in the same XML on the wire.
For me this was already solved by the patch suggested above. I just could not
convince my upstream because the WSDL is still valid in some regard. IMHO an
element without a type specification should be prohibited by the spec.
> cxf-codegen-plugin generates invalid code for operations with empty parameters
> ------------------------------------------------------------------------------
>
> Key: CXF-8114
> URL: https://issues.apache.org/jira/browse/CXF-8114
> Project: CXF
> Issue Type: Bug
> Affects Versions: 3.3.3
> Reporter: Stephan Wienczny
> Priority: Major
> Attachments: OneClickForRefund.wsdl
>
>
> We are trying to implement a webservice from a given wsdl. It contains an
> operation (createRetoureId) that references an empty element
> (CreateRetoureIdRequest)
> as parameter, e.g. it is an operation without an actual parameter. In the
> generated code this parameter is mapped to "java.lang.Object":
> {{}}{{@WebMethod}}
> {{@WebResult(name = "CreateRetoureIdResponse", targetNamespace =
> "http://oneclickforrefund.dpag.de";, partName = "parameters")}}
> {{@Generated(value = "org.apache.cxf.tools.wsdlto.WSDLToJava", date =
> "2019-09-13T11:24:07.696+02:00")}}
> {{public CreateRetoureIdResponse createRetoureId(}}
> {{ @WebParam(partName = "createRetoureIdRequest", name =
> "CreateRetoureIdRequest", targetNamespace =
> "http://oneclickforrefund.dpag.de";)}}
> {{ java.lang.Object createRetoureIdRequest}}
> {{) throws CreateRetoureIdException_Exception;}}
>
> I did not find a way to pass a valid value to the method when being invoked
> from Java. Neither "null" nor "new Object()" result in a message being send.
>
> The wsdl is attached and publicly available at
> [https://internetmarke.deutschepost.de/OneClickForRefund?wsdl]
>
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