Classloader in VaadinService not transient ?

Vaadin 6 / 7 / 8
1

Hi,

i’m new to Vaadin and just started with developing apps with it.
I try to integrate vaadin into a existing application.
We have a filter that checks that all objects stored in HttpSession are Serializable.
In Vaadin 7 beta 11 we get an error that ClassLoader in VaadinService:79 in VaadinSession s not serializable:

We run Tomcat 6 so the ClassLoader is a org.apache.catalina.loader.WebappClassLoader

VaadinService saves VaadinSession(aggr. VaadinServletService which agr. ClassLoader instance)
here:


    public VaadinSession findVaadinSession(VaadinRequest request)
            throws ServiceException, SessionExpiredException {
        VaadinSession vaadinSession = findOrCreateVaadinSession(request);
        if (vaadinSession == null) {
            return null;
        }

        VaadinSession.setCurrent(vaadinSession);
        request.setAttribute(VaadinSession.class.getName(), [b]
vaadinSession
[/b]);

        return vaadinSession;
    }

VaadinSession contains a Service that contains ClassLoader which is not transient.

Is it intended or a bug ?
I my opinion there(VaadinService:79 ) is a “transient” missing.

2

The reference to VaadinService from VaadinSession is transient so the VaadinService should never be serialized, and therefore not the ClassLoader either.