Hypertext::non-Hypertext not URL::URN
Larry Masinter <masinter@parc.xerox.com> Fri, 02 January 1998 18:03 UTC
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Date: Fri, 02 Jan 1998 09:53:03 -0800
From: Larry Masinter <masinter@parc.xerox.com>
Organization: Xerox PARC
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CC: paf@swip.net, fielding@kiwi.ics.uci.edu, harald.t.alvestrand@uninett.no, moore@cs.utk.edu, uri@Bunyip.Com, urn-ietf@Bunyip.Com
Subject: Hypertext::non-Hypertext not URL::URN
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Michael, I think you've made an important point that I don't want to get lost. The syntax forms that are controversial (fragment identifiers, relative forms, query syntax) are part of the application of HYPERTEXT. In fact, whether or not you want those forms seems to depend entirely on whether or not you think you're doing hypertext. The distinction between having them and not seems to have little to do with whether or not the identifiers are "location independent". If you want a resource locator but you're not doing hypertext (e.g., the resources that you're locating are printers for IPP or servers for service location or whatever) then the relative, query, and fragment forms are not applicable. If you ARE doing hypertext, then those forms are useful, even if you believe the identifiers are permanent, location independent, and have all of the attributes that are intended for URNs and not for URLs. "Uniform Resource Identifiers" define a space of fully qualified, non annotated names, while "hypertext references" imbue some semantics to the internal syntax of URIs (namely, give significance to "/" and "?" within Uniform Resource Identifiers), add a new syntactic element ("#" fragment identifiers), and add a new protocol element (relative identifiers). Larry -- http://www.parc.xerox.com/masinter
- Hypertext::non-Hypertext not URL::URN Larry Masinter
- Re: Hypertext::non-Hypertext not URL::URN Al Gilman
- Re: Hypertext::non-Hypertext not URL::URN Roy T. Fielding