I have encountered an issue regarding namespaces with a web service based on a stateless sesssion bean. First, my environment:
* JBoss 4.0.4 CR2
* JBuilder 2006
* Windows XP
* JDK 1.5 update 6

The issue is that it appears that all classes must reside in the same package/namespace; otherwise, exceptions such as the following occur:

javax.xml.rpc.JAXRPCException: org.jboss.ws.binding.BindingException: javax.xml.bind.JAXBException: Failed to parse source: Failed to resolve class name for request: No ClassLoaders found for: sample.Request

The problem is that Request resides in sample.data not sample as you can see from the following directory structure listing:

+---src
| +---sample
| | | SampleBean.java
| | | SampleLocal.java
| | | SampleLocalHome.java
| | | SampleWebService.java
| | |
| | \---data
| | BusinessRequest.java
| | BusinessResponse.java
| | PaymentRequest.java
| | PaymentResponse.java
| | Request.java
| | Response.java

If collapsed to a single package/namespace, no errors are encountered.

The classes in sample.data nothing more than shells - for example:

package sample.data;

public class BusinessRequest {
 private String policyNumber;

 public BusinessRequest() {
 policyNumber = null;
 }

 public BusinessRequest(String policyNumber) {
 this.policyNumber = policyNumber;
 }
 public String getPolicyNumber() {
 return policyNumber;
 }

 public void setPolicyNumber(String policyNumber) {
 this.policyNumber = policyNumber;
 }

}

The EJB is even simpler:

package sample;

import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.ejb.CreateException;
import sample.data.Response;
import sample.data.Request;

public class SampleBean implements SessionBean {
 SessionContext sessionContext;
 public void ejbCreate() throws CreateException {
 }

 public void ejbRemove() {
 }

 public void ejbActivate() {
 }

 public void ejbPassivate() {
 }


 public void setSessionContext(SessionContext sessionContext) {
 this.sessionContext = sessionContext;
 }

 public Response test(Request request) {
 // do nothing
 return new Response();
 }
}

And the WSDL looks correct as well:

<wsdl:definitions targetNamespace='http://sample' xmlns:apachesoap='http://xml.apache.org/xml-soap' xmlns:impl='http://sample' xmlns:intf='http://sample' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:tns2='http://data.sample' xmlns:wsdl='http://schemas.xmlsoap.org/wsdl/' xmlns:wsdlsoap='http://schemas.xmlsoap.org/wsdl/soap/' xmlns:xsd='http://www.w3.org/2001/XMLSchema'>
 <wsdl:types>
 <schema targetNamespace='http://data.sample' xmlns='http://www.w3.org/2001/XMLSchema'>
 <import namespace='http://schemas.xmlsoap.org/soap/encoding/'/>
 <complexType name='BusinessRequest'>
 <sequence>
 <element name='policyNumber' nillable='true' type='xsd:string'/>
 </sequence>
 </complexType>
 <complexType name='PaymentRequest'>
 <sequence>
 <element name='account' nillable='true' type='xsd:string'/>
 </sequence>
 </complexType>
 <complexType name='Request'>
 <sequence>
 <element name='businessRequest' nillable='true' type='tns2:BusinessRequest'/>
 <element name='paymentRequest' nillable='true' type='tns2:PaymentRequest'/>
 </sequence>
 </complexType>
 <complexType name='BusinessResponse'>
 <sequence/>
 </complexType>
 <complexType name='PaymentResponse'>
 <sequence>
 <element name='transactionID' nillable='true' type='xsd:string'/>
 </sequence>
 </complexType>
 <complexType name='Response'>
 <sequence>
 <element name='businessResponse' nillable='true' type='tns2:BusinessResponse'/>
 <element name='paymentResponse' nillable='true' type='tns2:PaymentResponse'/>
 </sequence>
 </complexType>
 </schema>
 </wsdl:types>
 <wsdl:message name='testRequest'>
 <wsdl:part name='request' type='tns2:Request'/>
 </wsdl:message>
 <wsdl:message name='testResponse'>
 <wsdl:part name='testReturn' type='tns2:Response'/>
 </wsdl:message>
 <wsdl:portType name='SampleLocal'>
 <wsdl:operation name='test' parameterOrder='request'>
 <wsdl:input message='impl:testRequest' name='testRequest'/>
 <wsdl:output message='impl:testResponse' name='testResponse'/>
 </wsdl:operation>
 </wsdl:portType>
 <wsdl:binding name='SampleLocalSoapBinding' type='impl:SampleLocal'>
 <wsdlsoap:binding style='rpc' transport='http://schemas.xmlsoap.org/soap/http'/>
 <wsdl:operation name='test'>
 <wsdlsoap:operation soapAction=''/>
 <wsdl:input name='testRequest'>
 <wsdlsoap:body encodingStyle='http://schemas.xmlsoap.org/soap/encoding/' namespace='http://sample' use='encoded'/>
 </wsdl:input>
 <wsdl:output name='testResponse'>
 <wsdlsoap:body encodingStyle='http://schemas.xmlsoap.org/soap/encoding/' namespace='http://sample' use='encoded'/>
 </wsdl:output>
 </wsdl:operation>
 </wsdl:binding>
 <wsdl:service name='SampleLocalService'>
 <wsdl:port binding='impl:SampleLocalSoapBinding' name='SamplePort'>
 <wsdlsoap:address location='http://CAHAL-BROWNJ61:8080/SampleEJB/Enterprise1Service'/>
 </wsdl:port>
 </wsdl:service>
</wsdl:definitions>

What is causing this issue? I can rectify by collapsing all classes to once package/namespace; however, that seems like an architectural cop-out.

-- James