XFireClientFactoryBean problem with Collections

[jjmargon]

Hi.
I have a problem with XFireClientFactoryBean.
In fact, the XFire comes with an example (Book example).
Basically, the problem is when I try to invoke a web service through XFireClientFactoryBean and the method of the service returns a Collection.

The XFire example comes with a client example.
It uses its own code.

String serviceURL = "http://localhost:8080/web-service-xfire-server/services/BookService";
        Service serviceModel = new ObjectServiceFactory().create(BookService.class,null,"http://xfire.codehaus.org/BookService",null);
        
        XFireProxyFactory serviceFactory = new XFireProxyFactory();
        
        try
        {
            BookService service = (BookService) serviceFactory.create(serviceModel, serviceURL);
            Client client = Client.getInstance(service);
            client.addOutHandler(new OutHeaderHandler());
            // disable timeout
            client.setProperty(CommonsHttpMessageSender.HTTP_TIMEOUT, "0");
            
            Book[] books = service.getBooks();
            Map booksMap = service.getBooksMap();

And this code works well.
I made my own similar client code with XFireClientFactoryBean:

XFireClientFactoryBean bookService = new XFireClientFactoryBean();
		bookService.setWsdlDocumentUrl("http://localhost:8080/web-service-xfire-server/services/BookService?wsdl");
		bookService.setServiceInterface(BookService.class);
		
		bookService.afterPropertiesSet();
		
		BookService bookProxiedService = (BookService)bookService.getObject();
		
		Client client = Client.getInstance(bookProxiedService);
        client.addOutHandler(new OutHeaderHandler());
        // disable timeout
        client.setProperty(CommonsHttpMessageSender.HTTP_TIMEOUT, "0");
		
        Map booksMap = bookProxiedService.getBooksMap();

and this code gets an exception, because the method invoked on the service returns a Map (a Collection).
I've tried to invoke a method that returns an array of objects instead a Collection for example, or a single object and it works well. As I said before, the problem is when I invoke a method that returns a Collection (a Map in this case).

It can be this an error in XFireClientFactoryBean?

Am I making something wrong?

Thanks a lot in advance

[jjmargon]

More interesting data.
I'm using XFire 1.2 and Spring 2.5

[jjmargon]

Sorry for this post.
I've just seen that XFireClientFactoryBean isn't included in Spring Framework, but in XFire. It's a helper Spring integration class included in XFire.
Maybe, this post has sense in a XFire forum, not in a Spring forum.
Sorry, and thank you