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From "Peter Liljenberg (JIRA)" <j...@apache.org>
Subject [jira] Created: (CXF-1052) CXF generates errornous client code when multiple elements have the same name in WSDL
Date Thu, 20 Sep 2007 13:56:31 GMT
CXF generates errornous client code when multiple elements have the same name in WSDL
-------------------------------------------------------------------------------------

                 Key: CXF-1052
                 URL: https://issues.apache.org/jira/browse/CXF-1052
             Project: CXF
          Issue Type: Bug
          Components: JAX-WS Runtime
    Affects Versions: 2.0.1
         Environment: Windows XP, Java 1.5
            Reporter: Peter Liljenberg
            Priority: Blocker



I'm getting ClassCastExceptions from within a dynamically created proxy when using CXF as
a client against a webservice. The WSDL for the service is attached, but some parts are shown
here:

 <message name='InvoiceDS_getInvoiceData'>
  <part element='tns:getInvoiceData' name='parameters'/>  </message> <message
name='InvoiceDS_getInvoiceDataResponse'>
  <part element='tns:getInvoiceDataResponse' name='result'/>  </message> <portType
name='InvoiceDS'>
  <operation name='getInvoiceData'>
   <input message='tns:InvoiceDS_getInvoiceData'/>
   <output message='tns:InvoiceDS_getInvoiceDataResponse'/>
   <fault message='tns:WebServiceFault' name='WebService'/>
  </operation>
 </portType>

All classes are genereated with WSDL2Java, the resulting interface for the service being (removed
annotations for readability):

public interface InvoiceDS {
    public java.util.List<localhost.jaws.InvoiceData> getInvoiceData(
        localhost.jaws.InvoiceRequest invoiceRequest
    ) throws WebServiceFault_Exception;
}

The InvoiceDS interface specifies that a List of InvoiceData objects should be returned from
the method. This means that the GetInvoiceDataResponse type is not used and CXF must unwrap
the result from the response before returning it to the client.

My testcode looks something like this:
{
       QName SERVICE = new QName("http://localhost/jaws", "InvoiceServiceDS");
        InvoiceServiceDS service = new InvoiceServiceDS(new URL("InvoiceWs.wsdl"), SERVICE);
        InvoiceDS client =service.getInvoiceDSPort();
        InvoiceRequest invoiceRequest = new InvoiceRequest();
        invoiceRequest.setCustId("test123");

        List<InvoiceData> invoiceData =
client.getInvoiceData(invoiceRequest);
}

Digging into the CXF framework with the debugger we end up in the
JaxWsClientProxy.invoke() method, line 191 has the return statement:
191        return result;

result is of type GetInvoiceDataResponse (as specified in the WSDL) and not the list that
was expected.


After looking into this issue more closely I discovered that the problem arises from the fact
that 2 elements in the WSDL have the same name and this makes CXF generate the wrong client
code.

Snippet of original WSDL file:

   <complexType name='InvoiceData'>
    <sequence>
     <element name='custID' nillable='true' type='string'/>
    </sequence>
   </complexType>
   <complexType name='InvoiceRequest'>
    <sequence>
     <element name='custId' nillable='true' type='string'/>
    </sequence>
   </complexType>
   <complexType name='getInvoiceData'>
    <sequence>
     <element name='InvoiceRequest' nillable='true'
type='tns:InvoiceRequest'/>
    </sequence>
   </complexType>
   <complexType name='getInvoiceDataResponse'>
    <sequence>
     <element maxOccurs='unbounded' minOccurs='0' name='result'
nillable='true' type='tns:InvoiceData'/>
    </sequence>
   </complexType>
   <element name='getInvoiceData' type='tns:getInvoiceData'/>
   <element name='getInvoiceDataResponse'
type='tns:getInvoiceDataResponse'/>
  </schema>
 </types>
 <message name='InvoiceDS_getInvoiceData'>
  <part element='tns:getInvoiceData' name='parameters'/>  </message>  <message
name='InvoiceDS_getInvoiceDataResponse'>
  <part element='tns:getInvoiceDataResponse' name='result'/>  </message>  <portType
name='InvoiceDS'>
  <operation name='getInvoiceData'>
   <input message='tns:InvoiceDS_getInvoiceData'/>
   <output message='tns:InvoiceDS_getInvoiceDataResponse'/>
  </operation>
 </portType>

------
In the new version I've changed the operation name to "getInvoiceDataOperation" and thus CXF
will render a working client for me.

WSDL snippet:
			<complexType name='InvoiceData'>
				<sequence>
					<element name='custID'
nillable='true'
						type='string' />
				</sequence>
			</complexType>
			<complexType name='InvoiceRequest'>
				<sequence>
					<element name='custId'
nillable='true'
						type='string' />
				</sequence>
			</complexType>
			<complexType name='getInvoiceData'>
				<sequence>
					<element name='InvoiceRequest'
nillable='true'
	
type='tns:InvoiceRequest' />
				</sequence>
			</complexType>
			<complexType name='getInvoiceDataResponse'>
				<sequence>
					<element maxOccurs='unbounded'
minOccurs='0'
						name='result'
nillable='true' type='tns:InvoiceData' />
				</sequence>
			</complexType>
			<element name='getInvoiceData'
type='tns:getInvoiceData' />
			<element name='getInvoiceDataResponse'
				type='tns:getInvoiceDataResponse' />
		</schema>
	</types>
	<message name='InvoiceDS_getInvoiceData'>
		<part element='tns:getInvoiceData' name='parameters' />
	</message>
	<message name='InvoiceDS_getInvoiceDataResponse'>
		<part element='tns:getInvoiceDataResponse' name='result'
/>
	</message>
	<portType name='InvoiceDS'>
		<operation name='getInvoiceDataOperation'>
			<input message='tns:InvoiceDS_getInvoiceData' />
			<output
message='tns:InvoiceDS_getInvoiceDataResponse' />
		</operation>
	</portType>



   public localhost.jaws.GetInvoiceDataResponse getInvoiceDataOperation(
        @WebParam(targetNamespace = "http://localhost/jaws", partName = "parameters", name
= "getInvoiceData")
        localhost.jaws.GetInvoiceData parameters
    );

Seems to be a problem when there are multiple elements with the same name (a datatype and
a message) but I'm assuming that should be ok according to the specs - since the WSDL works
with other SOAP stacks (.Net, Axis2, JBoss-WS)?

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