validation against XML schema - leads to invalid soap response
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                 Key: CXF-1551
                 URL: https://issues.apache.org/jira/browse/CXF-1551
             Project: CXF
          Issue Type: Bug
          Components: JAXB Databinding
    Affects Versions: 2.1
            Reporter: jmi


when XML schema validation is enabled, and mandatory element is missing 
(probably the same for any other error) in CXF-generated response, then 
response is invalid in some cases.

E.g. such response is generated from modified wsdl_first sample:

<soap:Envelope 
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><sayHiResponse
 xmlns="http://apache.org/hello_world_soap_http/types";><responseType>Executing 
operation sayHi1</responseType><responseType2><responseType>THIS IS IMPORTANT 
.. VERY LONG TEXT ..SOMETHING WILL BE flushed probably and that's why cannot be 
removed later when fault should replace content 
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................<soap:Fault><faultcode>soap:Server</faultcode><faultstring>Marshalli
ng Error: cvc-complex-type.2.4.a: Invalid content was found starting with 
element 'responseType2'. One of 
'{"http://apache.org/hello_world_soap_http/types":responseType}' is 
expected.</faultstring></soap:Fault></soap:Body></soap:Envelope>

in attachment you can find  modified sample I used to show the bug in simple 
enough project. Just do "ant server" and then invoke sayHi from soapUi or other 
tool, You should see response listed above.


Dans comment from mailing list:
Basically, fixing this will require breaking the streaming.  Most likely, 
if validation is turned on, we'll need to buffer the message to a cached 
stream, and if that doesn't result in a error, then flush the buffer to 
the real output stream.  That will be a little bit slower, but would fix 
this issue.

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