- From: Chimezie Ogbuji <ogbujic@ccf.org>
- Date: Wed, 30 May 2007 16:02:39 -0400
- To: "GRDDL Working Group" <public-grddl-wg@w3.org>
- cc: "Booth, David (HP Software - Boston)" <dbooth@hp.com>
Where I use the variable ?IR, I mean an information resource ?R is the XML representation (the bytes) dereferenced from ?IR ?N is a root XPath node of ?R Note that (in XML Base terminology), ?R is the document entity (which cannot inherit a base URI from content within - only via 5.1.3 and 5.1.4) It is worth noting also that there is a strong correspondence between the suggestion that the GRDDL result should be defined in terms of ?N (instead of ?IR) and interpretation of http://www.apps.ietf.org/rfc/rfc3986.html#sec-5.1.2 which uses the baseURI of the root node ?N of ?R (where ?R is the XML representation dereferenced from some ?IR) as the baseURI to use for resolving relative URI references in the GRDDL result and Especially if (using the logic functions introduced in the specification): gspec:xpath(fn:doc(?IR),'/*') = ?N Using http://www.w3.org/TR/grddl-tests/#embedded-rdf4 as an example. <embedded xml:base="../.." xmlns:data-view="http://www.w3.org/2003/g/data-view#" data-view:transformation="http://www.w3.org/2003/g/embeddedRDF.xsl"> <a> <b/> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> <rdf:Description rdf:about="" rdf:value="one"/> </rdf:RDF> </a> </embedded> The baseURI of the root node is http://www.w3.org/2001/sw/ even though the the IR from which the above 'representation' was fetched has a URI of http://www.w3.org/2001/sw/grddl-wg/td/embedded-rdf4 The resulting RDF/XML is: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:data-view="http://www.w3.org/2003/g/data-view#"> <rdf:Description rdf:about="" xml:lang="" rdf:value="one"/> </rdf:RDF> It has relative URI references so a BaseURI is needed. A reading of 5.1.2 which assumes that the "the encapsulating entity" of the resulting RDF/XML is the root node has strong correspondence with associating the resulting RDF/XML (the GRDDL result) with the root node (<embedded ...>) instead of http://www.w3.org/2001/sw/grddl-wg/td/embedded-rdf4 Formally: { ?IR log:uri [ fn:doc ?R ]. ?R grddl:transformation [ grddl:transformationProperty ?TP ]. ?R ?TP ?G. } => { gspec:xpath(fn:doc(?IR),'/*') grddl:result ?G }. -- 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 3 hospitals in America by U.S.News & World Report. 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, 30 May 2007 20:03:12 UTC