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https://issues.apache.org/jira/browse/CXF-2978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Kulp resolved CXF-2978.
------------------------------
Fix Version/s: Invalid
Resolution: Not A Problem
Working per spec.
> CLONE -Return Type List gets null on client if an empty list is returned
> ------------------------------------------------------------------------
>
> Key: CXF-2978
> URL: https://issues.apache.org/jira/browse/CXF-2978
> Project: CXF
> Issue Type: Bug
> Components: JAXB Databinding
> Affects Versions: 2.1.8, 2.2.7, 2.2.9, 2.2.10
> Environment: JSE 1.5 on Win XP
> Reporter: Staffan Forsell
> Assignee: Daniel Kulp
> Priority: Critical
> Fix For: Invalid
>
> Attachments: EmptyListExample-2.2.10.tar.gz
>
>
> If you have a function that returns an empty list the result will be null on
> client. Even If add a Responsewrapper to the interface it doesn't work. If
> have attached a little test project / program:
> Interface:
> @WebService(targetNamespace =
> "http://cxf.apache.org/demo/CustomerService/1/";, name = "CustomerService")
> @SOAPBinding(style = SOAPBinding.Style.DOCUMENT, use =
> SOAPBinding.Use.LITERAL)
> public interface CustomerService {
> @WebMethod(action = "findCustomer", operationName = "findCustomer")
> public @WebResult(name = "customerList")
> List<Customer> findCustomer();
>
>
> @WebMethod(action = "findCustomer2", operationName = "findCustomer2")
> @ResponseWrapper(className="demo.service.CustomerListResponse")
> public @WebResult(name = "customerList")
> List<Customer> findCustomer2();
> }
> The Implementation:
> @WebService(name = "CustomerService", serviceName = "CustomerService",
> targetNamespace = "http://cxf.apache.org/demo/CustomerService/1/";,
> endpointInterface = "demo.service.CustomerService")
> public class CustomerServiceImpl implements CustomerService {
> public List<Customer> findCustomer() {
> // very stupid method
> return new ArrayList<Customer>();
> }
> public List<Customer> findCustomer2() {
> // another very stupid method
> return new ArrayList<Customer>();
> }
> }
> And this is the main programm:
> public static void main(String args[]) throws Exception {
> new Server();
> System.out.println("Server ready...");
> // Now Call the Service
> JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
> factory.getInInterceptors().add(new LoggingInInterceptor());
> factory.getOutInterceptors().add(new LoggingOutInterceptor());
> factory.setServiceClass(CustomerService.class);
> factory.setAddress("http://localhost:9000/CustomerService";);
> CustomerService client = (CustomerService) factory.create();
> System.out.println("call findCustomer()");
> List<Customer> result = client.findCustomer();
> if (result != null)
> System.out.println("Listsize: " + result.size());
> else
> System.out.println("List is null: " + result);
> System.out.println("call findCustomer2()");
> result = client.findCustomer2();
> if (result != null)
> System.out.println("Listsize: " + result.size());
> else
> System.out.println("List is null: " + result);
> System.out.println("Server exiting");
> System.exit(0);
> }
> This will print the following output:
> Server ready...
> call findCustomer()
> 20.01.2010 07:49:45
> org.apache.cxf.interceptor.LoggingOutInterceptor$LoggingCallback onClose
> INFO: Outbound Message
> ---------------------------
> ID: 1
> Address: http://localhost:9000/CustomerService
> Encoding: UTF-8
> Content-Type: text/xml
> Headers: {SOAPAction=["findCustomer"], Accept=[*/*]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns2:findCustomer
>
> xmlns:ns2="http://cxf.apache.org/demo/CustomerService/1/"/></soap:Body></soap:Envelope>
> --------------------------------------
> 20.01.2010 07:49:45 org.apache.cxf.interceptor.LoggingInInterceptor logging
> INFO: Inbound Message
> ----------------------------
> ID: 1
> Encoding: UTF-8
> Content-Type: text/xml; charset=utf-8
> Headers: {Content-Length=[194], Server=[Jetty(6.1.21)],
> content-type=[text/xml; charset=utf-8]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns2:findCustomerResponse
>
> xmlns:ns2="http://cxf.apache.org/demo/CustomerService/1/"/></soap:Body></soap:Envelope>
> --------------------------------------
> List is null: null
> call findCustomer2()
> 20.01.2010 07:49:45
> org.apache.cxf.interceptor.LoggingOutInterceptor$LoggingCallback onClose
> INFO: Outbound Message
> ---------------------------
> ID: 2
> Address: http://localhost:9000/CustomerService
> Encoding: UTF-8
> Content-Type: text/xml
> Headers: {SOAPAction=["findCustomer2"], Accept=[*/*]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns2:findCustomer2
>
> xmlns:ns2="http://cxf.apache.org/demo/CustomerService/1/"/></soap:Body></soap:Envelope>
> --------------------------------------
> 20.01.2010 07:49:45 org.apache.cxf.interceptor.LoggingInInterceptor logging
> INFO: Inbound Message
> ----------------------------
> ID: 2
> Encoding: UTF-8
> Content-Type: text/xml; charset=utf-8
> Headers: {Content-Length=[300], Server=[Jetty(6.1.21)],
> content-type=[text/xml; charset=utf-8]}
> Payload: <soap:Envelope
> xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";><soap:Body><ns2:findCustomer2Response
> xmlns:ns2="http://cxf.apache.org/demo/CustomerService/1/";><return
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:nil="true"/></ns2:findCustomer2Response></soap:Body></soap:Envelope>
> --------------------------------------
> List is null: null
> Server exiting
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