- From: <noah_mendelsohn@us.ibm.com>
- Date: Fri, 14 Dec 2001 22:15:27 -0500
- To: andrewl@microsoft.com
- Cc: xml-dist-app@w3.org
As several have noted, your analysis is indeed right on the mark, and very helpful. >> 1a leads naturally to the idea that external and internal links should be syntactically distinguished, The tension seems to be this: from a pure web architecture point of view, efficiency and middleware architecture is not an issue, therefore do not distinguish one link from another. In practice, it's often nice to deal efficiently with the special case of the closed graph that originated with the sender, was intended to be "part of the message", and always travels with the message. Certainly, one will often wish to create middleware that recreates the closed subgraph either in advance of invoking a receiving application, or in some optimized manner. Which in turn leads to the further question, if these links are distinguished, distinguished how? The IDREF suggestion essentially says: only the potentially open graph references are true web-references; the others use mechanisms private to XML. I wonder whether there might be another heuristic that might be applied, one which would differentiate local references while unifying all references into a single URI-based graph? The rough idea would be: "all graph references are represented as href attributes which are URI references; references to multiref targets within the envelope SHOULD be relative URI's using fragment identifier syntax and starting with the "#" (I.e. #someid). These envelope-relative references thus form a subgraph which is always known to be carried with the message, and which in many cases can be decoded without further network traffic upon receipt." Does this make sense? ------------------------------------------------------------------------ Noah Mendelsohn Voice: 1-617-693-4036 Lotus Development Corp. Fax: 1-617-693-8676 One Rogers Street Cambridge, MA 02142 ------------------------------------------------------------------------
Received on Friday, 14 December 2001 22:15:59 UTC