Subject: RE: [xsl] Fwd: Five xdt:* types renamed|
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 23 Feb 2006 08:39:35 -0000
> What does this mean for XML Schema? The thinking is that XML Schema will "take over" the types xs:anyAtomicType, xs:yearMonthDuration, and xs:dayTimeDuration - that is, at some time in the future the normative definition of these types will be in the XML Schema specifications, not in the XPath data model (XDM). The other two types, xs:untyped and xs:untypedAtomic, describe data that has not been anywhere near a schema, so the definitions will remain part of XDM, even though they have "borrowed" two names in the schema namespace. In fact the first three types are already in the XML Schema 1.1 working drafts, and the main factor that caused us to make the change now was to avoid the much more difficult transition problem that would otherwise occur in a couple of years' time. Michael Kay http://www.saxonica.com/ > > Cheers, > Bryan Rasmussen > > > On 2/23/06, Dimitre Novatchev <dnovatchev@xxxxxxxxx> wrote: > > Wow !!! > > > > ---------- Forwarded message ---------- > > From: Liam Quin <liam@xxxxxx> > > Date: Feb 23, 2006 3:55 PM > > Subject: Five xdt:* types renamed > > To: www-ql@xxxxxx > > > > > > It's relatively unusual to make substantive changes in > specifications > > this late in the W3C Process, but everyone involved felt it was an > > improvement: > > > > The types xdt:anyAtomicType, xdt:yearMonthDuration, > xdt:dayTimeDuration, > > xdt:untyped, and xdt:untypedAtomic will all be moved into the > > W3C XML Schema namespace (with the kind permission of the W3C XML > > Schema Working Group) and will therefore become xs:anyAtomicType, > > xs:yearMonthDuration, xs:dayTimeDuration xs:untyped, and > xs:untypedAtomic. > > > > Liam > > > > (W3C Staff Contact and Participant in the XML Query Working Group) > > > > -- > > Liam Quin, W3C XML Activity Lead, http://www.w3.org/People/Quin/ > > Texts and Pictures from old books: http://www.fromoldbooks.org/ > > Liam ("Ankh") on the Web: http://www.holoweb.net/~liam/ > > > > > > > > -- > > Cheers, > > Dimitre Novatchev > > --------------------------------------- > > The significant problems we have cannot be solved at the > same level of > > thinking with which we created them.