On Wed, Nov 16, 2011 at 7:10 AM, Peter Firmstone <j...@zeus.net.au> wrote:
> If we share only the Service API, Java and Jini Platform classes and > objects, then we minimise Java platform issues. > I must have done something wrong in the past then, because that was always the case for me. > if the proxy is later transferred to another node in the network, the > codebase annotations have been lost because the classes were loaded by the > application class loader and resolved from the class path. If the 2nd > remote node doesn't have the required classes on its classpath, it's game > over. > Well, not necessarily. I used http:// URLs as the classpath for the entire application (yes, in its own child to the system classloader). Classpath annotations worked well. I could imagine that a River container has a webserver built--in and serving its own classes to needing clients. > This problem could be solved if the Classpath isn't visible to the proxy, > only the ServiceAPI, Java and Jini Platform classes, so developers don't > have to understand ClassLoader visibility and preferred classes and may > instead just focus on developing services and getting their OS and network > to support multicast discovery. > Agree that it might help, or not... If you are forced to understand classloader mechanics, I think you will learn to design better applications. > Some options: > > 1. Use the extension classloader > 2. OR Create a new child classloader, for the application and all > libraries. > 3. OR Use a Subprocess > Not sure I like any of those. Do you think it's time we work towards a standard container? So that at > some point in the future all the downstream projects will be able to > support it as well as their existing container? > > What are the requirements for such a container? > There a bunch of containers already, why not then discuss the pros/cons of each and see how what feedback there is. Cheers -- Niclas Hedhman, Software Developer http://www.qi4j.org - New Energy for Java I live here; http://tinyurl.com/3xugrbk I work here; http://tinyurl.com/6a2pl4j I relax here; http://tinyurl.com/2cgsug
