UnsupportedOperationException in AttributesToMap

> Hello,
>
> After working with Orbeon Forms for the past few months, I'm now at
> the point where I need to write my own custom processor. This is
> literally the first thing I've actually had to code in Java aside from
> your standard "Hello World", but working with OF and eXist has given
> me a pretty good feel for the environment.
>
> Things were going pretty well, but I just ran into a brick wall. I'm
> writing an interface between Apache Heraldry's OpenId Consumer class
> and OF. The part of the example code that I'm adapting needs to run an
> Iterator over the Request attributes.
>
> My Code (severely snipped):
> ExternalContext externalContext = (ExternalContext)
> context.getAttribute(context.EXTERNAL_CONTEXT);
> Map query =
> Consumer.filterArgs(externalContext.getRequest().getAttributesMap());
>
> Consumer.filterArgs:
> public static Map filterArgs(Map args)
> {
>    Map result = new HashMap();
>    Iterator it = args.entrySet().iterator();
>    while (it.hasNext())
>    {
>        Map.Entry e = (Map.Entry)it.next();
>        String k = (String)e.getKey();
>        String [] v = (String [])e.getValue();
>        result.put(k, v[0]);
>    }
>    return result;
> }
>
> and of course, in AttributesToMap.entrySet() we have:
> public Set entrySet() {
>        // TODO: It's harder than it looks, as changes to the Entry
> elements must be reflected in the Map.
>        throw new UnsupportedOperationException();
>    }
>
> So it looks like this method was never implemented. I'll take Erik's
> word for it that this would probably end up being tricky to implement
> properly. The thing is, I don't really need write-access to it, so I
> don't care if it updates or not.
>
> Does anyone know of a workaround to this? Am I accessing the Request
> attributes properly? Can anyone think of a way to re-write filterArgs
> so it doesn't use an Iterator? As I previously stated, I'm still
> ramping up in my Java knowledge, so I thought I'd ask the list before
> I wasted time trying to hack my own work-around.
>
> Thank You for any assistance you may have to give,
> Daniel E. Renfer
> http://kronkltd.net/
>
>
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>
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