Remote Iterator

Can anyone point me to a good example of a paged distributed iterator
for iterating through collections? I didn't want to reinvent the wheel.
I'm using J2SE and am looking for the following features:

        1. Can buffer/page items on the client
        2. Does not keep a connection active for the length of
iteration; connection is only active the time required to get the next
page from the server. Calls to #next and #hasNext do not connect to the
server at all.

This is for a highly scalable system so we want to keep connection times
to a minimum to decrease the chances of having too many concurrently
open connections.

I would just send the whole collection across in a single call but that
would keep the connection active for too long. Thoughts?

R.

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