Re: [urn] Finalizing items from IETF 83
Juha Hakala <juha.hakala@helsinki.fi> Thu, 28 June 2012 11:53 UTC
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Date: Thu, 28 Jun 2012 14:52:53 +0300
From: Juha Hakala <juha.hakala@helsinki.fi>
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To: Julian Reschke <julian.reschke@gmx.de>
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Subject: Re: [urn] Finalizing items from IETF 83
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Hello, On 28.6.2012 13:01, Julian Reschke wrote: > On 2012-06-28 11:42, Svensson, Lars wrote: >> I'll second that RFC 2141bis says that fragment identifiers are >> allowed in URNs but that they are not part of the NSS. Further, RFCs >> for new namespaces must specify if they allow the use of fragment >> identifiers or not but I guess that is something for RFC 3406bis. > > No. > > Namespace specifications define the namespace-specific part; nothing > else. Fragment syntax and semantics are defined by RFC 3986. > > A spec *can* point out that the URN does not identify something from > which a payload + media type can be retrieved, in which fragment > identifiers are not applicable. But that's different from disallowing them. OK. It should be possible to adjust the text in rfc2141bis to say that there are namespaces in which fragment usage is not applicable since the resources which can be identified within than namespace - say, textual works as abstract entities in URN:ISTC - will not have fragments in the RFC 3986 sense of the word. As far as I am concerned, it does no harm if the namespace registration request confirms that it is possible to use fragment to augment the functionality of the URNs from that particular namespace. For instance, I asked a permission from the ISBN Registration Authority to use fragments in the URN:ISBN namespace. Since this point will be made in the namespace registration request the national ISBN agencies and other ISBN users do not need to ask if fragments are allowed. And while some examples could be given in the namespace registration request it is definitely up to the URI Generic Syntax and other relevant technical documents to provide the necessary details for each document format. All the best, Juh > > Best regards, Julian -- Juha Hakala Senior advisor, standardisation and IT The National Library of Finland P.O.Box 15 (Unioninkatu 36, room 503), FIN-00014 Helsinki University Email juha.hakala@helsinki.fi, tel +358 50 382 7678
- Re: [urn] Finalizing items from IETF 83 Julian Reschke
- [urn] Finalizing items from IETF 83 Andy Newton
- Re: [urn] Finalizing items from IETF 83 Juha Hakala
- Re: [urn] Finalizing items from IETF 83 Svensson, Lars
- Re: [urn] Finalizing items from IETF 83 Juha Hakala
- Re: [urn] Finalizing items from IETF 83 Martin J. Dürst
- Re: [urn] Finalizing items from IETF 83 Jonathan A Rees
- Re: [urn] Finalizing items from IETF 83 Peter Saint-Andre
- Re: [urn] Finalizing items from IETF 83 Julian Reschke
- Re: [urn] Finalizing items from IETF 83 Peter Saint-Andre
- Re: [urn] Finalizing items from IETF 83 Julian Reschke