- From: Booth, David (HP Software - Boston) <dbooth@hp.com>
- Date: Wed, 20 Jun 2007 01:15:03 -0400
- To: "GRDDL Working Group" <public-grddl-wg@w3.org>
This proposal extends proposal 1b at http://lists.w3.org/Archives/Public/public-grddl-wg/2007Jun/0201.html to also reduce/eliminate variability in the "transformaiton determination" step, by specifying that the document parsing must be minimal, non-validating parsing. The only difference from that proposal is part 1 below. Please note that this proposal also does not require any changes to our test cases. Summary of proposed changes: - Change the domain of the GRDDL transformation from XPath node tree to the original XML document (representation) - Require minimal, non-validating parsing - Leave the door open to a future Note that would define "complete GRDDL results". --------------------------------- 1. In http://www.w3.org/2004/01/rdxh/spec#rule_result which is currently: [[ If an information resource([WEBARCH], section 2.2) IR is represented by an XML document with an XPath root node R, and R has a GRDDL transformation with a transformation property TP, and TP applied to R gives an RDF Graph[RDFC04] G, then G is a GRDDL result of IR. ]] change "XML document" to "XML document D" and "TP applied to R" to "TP applied to D" and add the following sentences: [[ Furthermore, N MUST be the root node of an XPath node tree T that is created from D using only the minimum processing required of a non-validating parser[XML] to produce T corresponding to D. However, such processing MAY include error checking that does not affect T. ]] And make corresponding changes to the informative text in section 6 and the XInclude test cases. 2. I write a separate Working Group Note that defines the notion of "complete GRDDL result", which would be referenced from the GRDDL spec. GRDDL-aware agents would NOT be required to implement this. A draft of this Note is currently available at: http://dbooth.org/2007/grddl/complete.html 3. In conjunction with this Note, we adopt the following two changes to the GRDDL spec: a. To enable complete GRDDL results to be determined when namespace or profile documents are used, add the following sentence to the end of the Faithful Renditions section: [[ Furthermore, by serving a representation of a namespace or profile document that indicates any namespace or profile transformations, the author of that document states that every representation that indicates any namespace or profile transformations indicates the same set of namespace or profile transformations. ]] b. In sec 7 (GRDDL-aware agents), before the example, add: [[ Determining Complete GRDDL Results In some cases, the person or application making use of a GRDDL-aware agent may wish to know whether the GRDDL results obtained from an XML document are known to constitute <i>all</i> of the GRDDL results that the document was intended to denote. This specification does not define a notion of <i>complete GRDDL results</i>, but as of this writing the GRDDL Working Group is considering publishing such a definition as a separate Working Group Note. Implementers of GRDDL-aware agents would be encouraged, but not required, to make use of such a definition if one is published. ]] David Booth, Ph.D. HP Software +1 617 629 8881 office | dbooth@hp.com http://www.hp.com/go/software Opinions expressed herein are those of the author and do not represent the official views of HP unless explicitly stated otherwise.
Received on Wednesday, 20 June 2007 05:16:11 UTC