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Subject: a couple paramaters questions
I've been reviewing the latest 2.0 draft over the last two days, and I
have a couple questions related to combining algorithm parameters. I
should say up front that these have little to do with the mechanics of
these features, and are more about some possible simplifications to the
schema. I know we're up to the deadline, so a quick response (or maybe
some time to discuss this at tomorrow's FG meeting) would be very
appreciated!
In the current draft (13), I see that both PolicySet and Policy let you
specify CombinerParameters, but in both cases it's inside the choice
that allows any number of parameters. Since CombinerParameters is
already a container for any number of parameters, why do we need to
allow more than one per Policy[Set]? I can't figure out what value this
adds. Unless I'm missing something, I'd like to see only one optional
CombinerParameters per Policy[Set], which not only simplifies the
schema, but also the spec, since we currently explain in a number of
places that having multiple CP elements just results in them being
concatenated together. If we only allowed one block, then we could
remove all the extra text.
A related question has to do with parameters for specific
Rules/Policies/PolicySets. We don't have different CombinerParameters
types for policy and rule combining algorithms, but we do have
different ones for policyset, policy, and rule. Why is this? The three
all behave the same way and have the same contents. The only rationale
I can think of is that this allows a Policy and a PolicySet to have the
same identifier, but we already handle this case, in fact we're
explicit about this in the text explaining how parameters for
references are handled. Can someone help explain this to me? I'd like
to use just one type, but I suspect there must be a reason for this
naming choice...
Thanks!
seth
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