Andy,
From meeting minutes
5.4) Filtering
The use of POSIX regular expressions is planned for this
feature. There are still a lot of details that need to
be written down before an interoperable filtering
mechanism (i.e., same NETCONF behavior across agents)
is fully defined.
It was noted that the function library of XPATH 2.0 supports
regular expressions in the function library. XPATH 1.0 does
not have something like that.
The authors will propose some text in the next revision of
the Notifications I-D.
Question: The current notifications draft uses the same filtering
mechanism as those identified in the netconf protocol doc. Wouldn't it
be more appropriate to add this information (i.e. filtering using XPATH
2.0 reg exp) to the main protocol document after it becomes an RFC? By
doing this we maintain the two docs in sync wrt filtering features.
thanks