Re: [netmod] I-D Action: draft-lange-netmod-iana-timezones-00.txt
Andy Bierman <andy@yumaworks.com> Thu, 28 June 2012 15:07 UTC
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Date: Thu, 28 Jun 2012 08:07:15 -0700
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From: Andy Bierman <andy@yumaworks.com>
To: Jonathan.Hansford@generaldynamics.uk.com
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Cc: netmod@ietf.org
Subject: Re: [netmod] I-D Action: draft-lange-netmod-iana-timezones-00.txt
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On Thu, Jun 28, 2012 at 7:58 AM, <Jonathan.Hansford@generaldynamics.uk.com>wrote: > > -----Original Message----- > > From: Juergen Schoenwaelder > [mailto:j.schoenwaelder@jacobs-university.de] > > Sent: 28 June 2012 14:12 > > To: Lange, Jeffrey K (GE Energy); Martin Bjorklund; netmod@ietf.org > > Subject: Re: [netmod] I-D Action: > draft-lange-netmod-iana-timezones-00.txt > > > > On Thu, Jun 28, 2012 at 03:02:30PM +0200, Juergen Schoenwaelder wrote: > > > > > > So that also is a bit arbitrary as well. Should I leave the enums > in > > alphabetical order? Or should it match what the zone.tab file does? > > > > > > Any order is likely irrelevant over time. See below. > > > > > > > Well, I realize this statement is not really helpful / correct. You > > can keept the enums defined in the order they are defined in the TZ > > database but then the value statements MUST be used and the numbers > > over time won't be assigned in a strictly increasing order. This means > > that YANG tools can use the definition order (if they are able to > > access it) or they might end up using the numeric value order, which > > will over time be increasingly meaningless. > > Still learning here, but RFC6087 states: > > If extensibility of enumerated values is required, then the > 'identityref' data type SHOULD be used instead of an enumeration or > other built-in type. > > So why are enums being considered over identityrefs? > > That text should be clarified. If a centralized naming authority is used, then enumeration is OK, and less complex than identityref. For distributed naming authority, an identityref is needed. (Identityref is a QName -- module-prefix:identity-name). Also, enums are allowed to have many chars in them that would be invalid in a YANG identifier. (e.g. '/' would make every timezone location invalid) > > > /js > > > Andy
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Juergen Schoenwaelder
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Martin Bjorklund
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Lange, Jeffrey K (GE Energy)
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Juergen Schoenwaelder
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Martin Bjorklund
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Juergen Schoenwaelder
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Lange, Jeffrey K (GE Energy)
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Juergen Schoenwaelder
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Jonathan.Hansford
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Martin Bjorklund
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Andy Bierman
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Juergen Schoenwaelder
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Jonathan.Hansford
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Andy Bierman
- Re: [netmod] I-D Action: draft-lange-netmod-iana-… Lange, Jeffrey K (GE Energy)