Re: Indirect references

Albert Lunde (Albert-Lunde@nwu.edu)
Sat, 2 Mar 1996 22:51:03 -0600 (CST)


Message-Id: <199603030451.AA092488663@lulu.acns.nwu.edu>
Subject: Re: Indirect references
To: bentz@ai.mit.edu
Date: Sat, 2 Mar 1996 22:51:03 -0600 (CST)
Cc: www-html@w3.org
In-Reply-To: <9603021825.AA01332@www10.w3.org> from "Bryan A. Bentz" at Mar 2, 96 01:29:19 pm
From: Albert-Lunde@nwu.edu (Albert Lunde)

> However, an indirect referencing scheme might go a long way towards 
> solving this problem.  Rather than:
> 
>         <A HREF="http://www.blah/foo.html">
> which is an "absolute" pointer, perhaps a syntax change allowing 
> dynamic lookup would solve the problem:
>        <A HREF="www.blah.foo.html@index-server.com" ...>
> 
> The idea is that to resolve the HREF, (in this case) index-server.com 
> is asked for the *current* location of www.blah.foo.html (syntax here 
> needs some thought).  This way, one could move pages around, update 
> pointers on whatever index server one uses, and all existing pointers 
> would still work.

Up to a point, this can be done with no changes in protocol or syntax
by using something like a database-driven CGI script to make
redirects to the actual location of pages, and I think some sites
have done this (we use such a scheme to point to staff home pages
based on our Ph database ... this idea came from uiuc.edu). 

Efforts to develop URNs are aimed at providing indirection in slightly
a more elegant or general way... I'm unsure of the exact status of
this but it seemed to be converging on some agreements as of the
Boston WWW conference in December.

-- 
    Albert Lunde                      Albert-Lunde@nwu.edu