There is a general point here about external datastreams: Fedora has no way to 
know when they change. To my knowledge, it does not poll those URLs or maintain 
timestamping on them or the like. In a situation where Fedora is caching 
information derived from external datastreams (or some other part of a system 
is caching information derived from Fedora external datastreams) there is no 
immediate way to have changes propagate as appropriate without adding 
additional machinery. Fedora can't do it by itself.

---
A. Soroka
Online Library Environment
the University of Virginia Library




On May 12, 2011, at 7:22 AM, Swithun Crowe wrote:

> I was expecting external FESLPOLICY datastreams to be refreshed when the 
> external version was updated. But what I should expect is that datastreams 
> get refreshed if the local copy is modified (managed), or the datastream 
> changes state (managed/external).


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