Message from discussion
Aggregation/Resource Map relationship question
Received: by 10.214.11.19 with SMTP id 19mr2442684qak.21.1218743348056;
Thu, 14 Aug 2008 12:49:08 -0700 (PDT)
Return-Path: <sim...@cs.cornell.edu>
Received: from exch-hub1.cs.cornell.edu (mail-hub-1.cs.cornell.edu [128.84.103.138])
by mx.google.com with ESMTP id 7si4840438yxg.0.2008.08.14.12.49.07;
Thu, 14 Aug 2008 12:49:08 -0700 (PDT)
Received-SPF: pass (google.com: best guess record for domain of sim...@cs.cornell.edu designates 128.84.103.138 as permitted sender) client-ip=128.84.103.138;
Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of sim...@cs.cornell.edu designates 128.84.103.138 as permitted sender) smtp.mail=sim...@cs.cornell.edu
Received: from exchfe2.cs.cornell.edu (128.84.97.34) by
mail-hub.cs.cornell.edu (128.84.96.244) with Microsoft SMTP Server id
8.0.813.0; Thu, 14 Aug 2008 15:49:06 -0400
Received: from exchfe2.cs.cornell.edu ([128.84.97.28]) by
exchfe2.cs.cornell.edu with Microsoft SMTPSVC(6.0.3790.3959); Thu, 14 Aug
2008 15:49:06 -0400
Received: from ice.cs.cornell.edu ([128.84.103.124]) by exchfe2.cs.cornell.edu
over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Thu, 14 Aug
2008 15:49:06 -0400
Received: from simeon by ice.cs.cornell.edu with local (Exim 4.63)
(envelope-from <sim...@cs.cornell.edu>) id 1KTioj-0000rD-RR for
oai-ore@googlegroups.com; Thu, 14 Aug 2008 15:49:05 -0400
Date: Thu, 14 Aug 2008 15:49:05 -0400
From: Simeon Warner <sim...@cs.cornell.edu>
To: oai-ore@googlegroups.com
Subject: Re: Aggregation/Resource Map relationship question
Message-ID: <20080814194905.GA1749@ice.cs.cornell.edu>
References: <15c4095c-12ba-4ef4-9865-db0d234d184c@79g2000hsk.googlegroups.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <15c4095c-12ba-4ef4-9865-db0d234d184c@79g2000hsk.googlegroups.com>
User-Agent: Mutt/1.5.17 (2007-11-01)
Return-Path: sim...@cs.cornell.edu
X-OriginalArrivalTime: 14 Aug 2008 19:49:06.0037 (UTC) FILETIME=[CF5F8A50:01C8FE46]
On Thu, Aug 14, 2008 at 08:48:47AM -0700, Jeff Young wrote:
> I'm trying to put together a UML class diagram for ORE, and I'm
> puzzled by these statements in section 3.1 of the "ORE-User Guide -
> Primer":
>
> http://www.openarchives.org/ore/0.9/primer.html#Aggregation
>
> "An Aggregation does not have a representation..."
> "the Aggregation URI A-1 must yield or lead to a Resource Map when
> dereferenced."
>
> Is this still the current thinking? If so, what's wrong with Resource
> Maps being accepted as representations of the Aggregation?
Well, this is a difference between English and the Architecture of the
World Wide Web [AWWW] document. In English I think one could
reasonably say that the Resource Map is a representation of an
Aggregation. However, in the language of AWWW there is no bitstream
for resource A-1 obtained via content negotiation so no
representation. One does get either redirected to resource R-1 from
which a representation is available, or -- as a shortcut -- one gets a
represenation of R-1 back with a header saying that is is from R-1 and
not from A-1.
> I understand that a Resource Map is a description of an Aggregation
> and not the Aggregation itself. This is true in the same sense that a
> metadata record is not the same as a book. Nevertheless, it is fair to
> say that a metadata record is a reasonable representation of a book.
>
> If this was accepted, the questionable reference to an Aggregation
> being a "non-information resource" could be dropped.
I think we will drop the information resource and non-information
resource terminology as it just muddies the water.
Cheers,
Simeon
|
