- From: Chimezie Ogbuji <ogbujic@ccf.org>
- Date: Wed, 01 Aug 2007 09:42:16 -0400
- To: "GRDDL Working Group" <public-grddl-wg@w3.org>
On Fri, 2007-07-27 at 09:46 -0500, Dan Connolly wrote: > It's inconsistent. Yes > Any statement of the form "A GRDDL-aware agent may ..." specifies > conforming behavior. To then say that such behavior is not conforming > is inconsistent. Yes, see my previous email about the value of additional text regarding capabilities not required by a GRDDL-aware agent. > Rather than "allowing > transformations to be found in schemas not specified at > the namespace document" it would make more sense to say > "allowing namespace documents to be looked up using > non-standard mechanism"; e.g. somebody could use > a local/custom URN resolver or a catalog or whatever to > overlay the public web with a local mapping of URIs > to schemas. This makes *much* more sense IMHO. The mechanism is not out-of-band, (it is very much within the boundaries of AWWW - albeit via a non-ubiquitous URI scheme), it doesn't speak specifically about schemas (of which GRDDL knows *nothing* and should remain this way). I would strike out the last statement about schemas. I think we can satisfy the XQuery WG's concerns with statements which demonstrate that HTTP dereference of a namespace URI is not the *only* way to resolve additional content to consider in calculating a derived RDF graph (even though this is the only normative mechanism which results in a 'faithful rendition') without saying anything about XML schemas. This is very similar to something I touched on in a recent presentation [1] where I investigated how GRDDL can be extended to support "faithful renditions" via transformations identified by mechanism in a CMS independent of direct markup in the source. The suggested solution was to use "GRDDL-like" mechanisms where the application of a transformation is the same as in GRDDL, but the means by which the transformation is identified is outside of GRDDL. This does not require a modification to GRDDL but an understanding of how it can be used as the base framework for additional (in this case, more specific) behavior. I think the comment thread is conflating identification of schema documents with calculation of faithful renditions (the two have *nothing* to do with each other). > Then the result is a faithful rendition > inasmuch as the author of the source document agrees > that the non-standard lookup mechanism gives a > reasonable representation of the namespace document. I'm not certain it would be a 'faithful rendition' as it the resulting RDF would have been computed through transformations identified in a manner outside of GRDDL. However, this doesn't mean that GRDDL-like computation of RDF graphs are not useful or cannot be done. [1] http://copia.ogbuji.net/files/stc07/GRDDL-XML-CMS.odp -- Chimezie Ogbuji Lead Systems Analyst Thoracic and Cardiovascular Surgery Cleveland Clinic Foundation 9500 Euclid Avenue/ W26 Cleveland, Ohio 44195 Office: (216)444-8593 ogbujic@ccf.org =================================== Cleveland Clinic is ranked one of the top hospitals in America by U.S. News & World Report (2007). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you.
Received on Wednesday, 1 August 2007 13:45:46 UTC