Response Message Namespace Resolution

Question

I'm working on an application that creates xml messages from wsdls and then sends them out and picks up the response (like a basic web service). I've encountered a problem with the resoultion of namespaces on the parts of the response message of an operation and I can't decide which is the correct namespace to apply to the xml element that is created by the output message. Below is an example and explanation of the problem.
The WSDL came form XMethods and is called send email. I've included at the end.
Using this WSDL in Xmethods, an exmaple input message that is created is
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:mrns0="http://www.abysal.com/Abysal-webDTP" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soap:Body soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<mrns0:SendEmail>
<From xsi:type="xs:string"/>
<FromAddress xsi:type="xs:string">[email protected]</FromAddress>
<To xsi:type="xs:string"/>
<ToAddress xsi:type="xs:string">[email protected]</ToAddress>
<Subject xsi:type="xs:string"/>
<MsgBody xsi:type="xs:string"/>
<Acknowledgement xsi:type="xs:string"/>
<Priority xsi:type="xs:string"/>
</mrns0:SendEmail>
</soap:Body>
</soap:Envelope>
The thing to note is that none of the parts have a namespace declaration (ie the FromAddress etc) and the root level does (ie the mrns0:sendEmail).
Now the response message comes back as
<?xml version='1.0' encoding='ISO-8859-1' ?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/' SOAP-ENV:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'>
<SOAP-ENV:Body>
<SendEmailResponse xmlns="http://www.abysal.com/Abysal-webDTP">
<ReturnCode>0</ReturnCode>
</SendEmailResponse></SOAP-ENV:Body>
</SOAP-ENV:Envelope>
With this response message the Part message "ReturnCode" has the same namespace as the Operation message "SendEmailResponse". This is a different approach to the request message.
What I can't work out from the wsdl definition is what determines the namespace that is applied to the parts of the request and response and why the namespace for those parts differs between the request and the reply message. If both the request and reply messages adhered to the target namespace then that would be fine but it seems like the request doesn't and hte response does. Maybe theres is some standard practice that I am unaware of.
Thanks for reading this far.
Here is the wsdl.
<?xml version="1.0" encoding="UTF-8"?>
<definitions name="AbysalSendEmail" targetNamespace="http://www.abysal.com/soap/AbysalEmail.wsdl" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://www.abysal.com/soap/AbysalEmail.wsdl" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<documentation>Abysal Systems Web Service to send email with WebDTP server</documentation>
<message name="SendEmailResponse">
<documentation>Output parameters</documentation>
<part name="ReturnCode" type="xsd:integer">
<documentation>Return code (0=ok any other=error)</documentation>
</part>
</message>
<message name="SendEmailInput">
<documentation>Input parameters</documentation>
<part name="From" type="xsd:string">
<documentation>Sender's name ( p.ej. 'Joe')</documentation>
</part>
<part name="FromAddress" type="xsd:string">
<documentation>Sender's address (p.ej. '[email protected]')</documentation>
</part>
<part name="To" type="xsd:string">
<documentation>Receiver's name (p.ej. 'Peter')</documentation>
</part>
<part name="ToAddress" type="xsd:string">
<documentation>Receiver's address (ie. '[email protected]')</documentation>
</part>
<part name="Subject" type="xsd:string">
<documentation>Description of the message</documentation>
</part>
<part name="MsgBody" type="xsd:string">
<documentation>Content of the message</documentation>
</part>
<part name="Acknowledgement" type="xsd:string">
<documentation>Notify sender when message is received ('0'=no '1'=yes)</documentation>
</part>
<part name="Priority" type="xsd:string">
<documentation>Grade of priority of message ('1'=high '3'=normal '5'=low)</documentation>
</part>
</message>
<portType name="SendEmailPortType">
<operation name="SendEmail" parameterOrder="From FromAddress To ToAddress Subject MsgBody Acknowledgement Priority">
<input message="tns:SendEmailInput"/>
<output message="tns:SendEmailResponse"/>
</operation>
</portType>
<binding name="SendEmailBinding" type="tns:SendEmailPortType">
<soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="SendEmail">
<soap:operation soapAction="http://www.abysal.com/soap/"/>
<input>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://www.abysal.com/Abysal-webDTP" use="encoded"/>
</input>
<output>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://www.abysal.com/Abysal-webDTP" use="encoded"/>
</output>
</operation>
</binding>
<service name="SendEmailService">
<documentation>Abysal Systems Web Service to send email with WebDTP server</documentation>
<port binding="tns:SendEmailBinding" name="SendEmailPort">
<soap:address location="http://www.abysal.com/soap/soapmail.wdtp"/>
</port>
</service>
</definitions>

Answer 1

Hello,
I experienced the same problem after I updated to SAAJ 1.2
after days of debugging I found that it is caused by Xalan and not by
the SAAJ. here is a reference to the bug description http://developer.java.sun.com/developer/bugParade/bugs/4966232.html
now I upgraded to Xalan 2.6.0 and the problem is gone.
only confusing thing is, that the combination SAAJ 1.1 + Xalan 2.5 works just fine.