Comply with JAX-WS 2.2: do not send response when Provider returns null
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Key: AXIS2-4763
URL: https://issues.apache.org/jira/browse/AXIS2-4763
Project: Axis2
Issue Type: Improvement
Components: jaxws
Reporter: Lori VanGulick
The JAX-WS 2.2 specification, section 5.1.1, states that when
a Provider invoke method returns null, it is considered that no
response needs to be sent by the service.
Currently in the JAX-WS runtime there is no way for a Provider
which does not specify a WSDL file to act like a one-way
operation (that is, an operation that does not return a SOAP
response, but instead responds with an HTTP acknowledgement).
The current behavior of a JAX-WS web service Provider which
does not specify a WSDL file is to always return a response.
In the case where the Provider returns null, the response
consists of a SOAPEnvelope which contains a SOAPBody that is
empty.
The following is an example of a Provider which returns
null and does not have a WSDL file:
@WebServiceProvider
public class HelloProvider implements Provider<Source> {
@Override
public Source invoke(Source req) {
return null;
}
}
The invocation of Provider<T>.invoke()produces the following
SOAP response:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.
org/soap/envelope/">
<soapenv:Body/>
</soapenv:Envelope>
The desired behavior is for the invocation to return no SOAP
response.
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