It was Dave Cridland who said at the right time 14.01.2009 16:50 the following words: > On Wed Jan 14 14:48:32 2009, Philip Van Hoof wrote: >> On Wed, 2009-01-14 at 14:38 +0100, Leo Sauermann wrote: >> > From my experience I add: >> > note that binary content is not a friend of RDF, >> >> Let me assure you that MIME is NOT a binary format ;) >> >> > MIME *can* have binary data in, but more typically it doesn't. Perhaps > just as interestingly, from the RDF/XML viewpoint, it can have > multiple character encodings, and even character sets, making life > particularly fun. MIME is generally a container format, and binary elements are part of the fun, and to completly represent MIME, the case of binary attachments has to be handled, and the case of multiple representations (html/plaintext) which indeed can have character sets, and this is hell in RDF.
if you can come up with a proposal using http://www.w3.org/TR/Content-in-RDF/ we could incorporate it > > >> > so I doubt that MIME can be completly and losslessly expressed in RDF >> > in an "elegant" way, >> >> I agree, but BODYSTRUCTURE can be expressed in RDF in a quite elegant >> way. >> >> > Binary MIME can be losslessly downconverted to something within a text > domain - typically using base64. Indeed, unlike 8-bit MIME, it almost > always is - it's only used in some pretty rare cases for now. > > Annoying character sets could either be transcoded to UTF-8, or else > downconverted to quoted-printable. > > None of these are elegant, though - but as Philip says, BODYSTRUCTURE > is intended to be an elegant representation of the structure and > properties of a MIME message, albeit in a LISP-like syntax instead of > XML. note also that this is RDF, not XML. so we are even more restricted. > >> A good E-mail client indeed doesn't fetch entire E-mails, but instead >> fetches individual MIME parts. Making each MIME part a significant >> entity by itself. >> >> > Right, and MIME parts are addressable as URIs - both as an IMAP URL, > giving information on how to access a copy, and as a cid scheme URN > potentially in addition. > > And yes, I do know we're not meant to make a distinction anymore > between URLs and URNs, but I'm hoping you guys know what I mean. > >> As an IMMessage is not a MIME part, but an EMail is. >> >> And move everything that is specific for EMails, if anything, out of >> Message into EMail. > > IMMessage is XMPP and the like? yes! > >> Here are some people who you can get in touch with who are are deeply >> involved in IMAP. If you have any questions about BODYSTRUCTURE or even >> MIME they can most likely help you: >> >> Dave Cridland <[email protected]> (added in CC) >> Alexey Melnikov <[email protected]> > > Alexey and I have some (potentially useful) experience with Instant > Messaging, specifically XMPP. We also have access to knowledge about > other messaging systems, like X.400, which might not be as useless as > it sounds, and Alexey's heavily involved in the EAI work to > internationalize email addressing. excellent, good news. I am curious: since when are you interested in RDF? hope to see you longer around... best Leo -- ____________________________________________________ DI Leo Sauermann http://www.dfki.de/~sauermann Deutsches Forschungszentrum fuer Kuenstliche Intelligenz DFKI GmbH Trippstadter Strasse 122 P.O. Box 2080 Fon: +49 631 20575-116 D-67663 Kaiserslautern Fax: +49 631 20575-102 Germany Mail: [email protected] Geschaeftsfuehrung: Prof.Dr.Dr.h.c.mult. Wolfgang Wahlster (Vorsitzender) Dr. Walter Olthoff Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes Amtsgericht Kaiserslautern, HRB 2313 ____________________________________________________ _______________________________________________ people mailing list [email protected] http://lists.semanticdesktop.org/mailman/listinfo/people
