Web Services and backwards compatibility

[Florian Lindauer <fl...@secure-net.de>]

    Currently we reflect on in how far changing a web service's
    interface can be done keeping it backwards compatible, i.e.
    do not break running clients.
    This sure is a broad topic, and if anyone can point me
    to articles, discussions etc on this..

    Going a bit more concrete, I think there should not be a
    problem if you add a new operation, for example. But adding
    a new data field in a bean class (part of some response)
    is a problem, at least for a client using Axis-generated
    client-stubs:

     org.xml.sax.SAXException: Invalid element
        in <BeanClass> - <newElement>

    Any chances that this problem will be fixed in future releases?
    (a .NET client using an old proxy-dll did not seem to have
     a problem here, ignoring the new field)
    How do other frameworks react on this?

    What are other typical pitfalls, what should one keep in mind
    when changing the interface of a web service? What can be
    considered "safe", and what should be avoided? But then, you
    probably cannot avoid a lot of things in reality..


Thanks for any help/ideas.
-- 
Florian Lindauer

Re: Unwrapping AxisFaults

[oleg shteynbuk <os...@nyc.rr.com>]

have you tried AxisFault.getCause()


Alireza Taherkordi wrote:

>Hi,
>
>anyone knows how to unwrap AxisFaults ?
>
>I have a SecurityException thrown on server side. This is wrapped into an
>AxisFault and sent to the client, which expects a SecurityException, not an
>AxisFault.
>
>Is there a utility like AxisFault.makeFault(Exception), but working in the
>opposite way ?
>
>Thanks
>
>Alireza
>
>
>
>
>  
>

Unwrapping AxisFaults

[Alireza Taherkordi <ta...@dpi2.dpi.net.ir>]

Hi,

anyone knows how to unwrap AxisFaults ?

I have a SecurityException thrown on server side. This is wrapped into an
AxisFault and sent to the client, which expects a SecurityException, not an
AxisFault.

Is there a utility like AxisFault.makeFault(Exception), but working in the
opposite way ?

Thanks

Alireza