On 12/13/01 2:25 PM, "bob mcwhirter" <[EMAIL PROTECTED]> wrote:
> > Geir, I know this doesn't help the fact that you need document > order, but on XML-DEV is discussion that XPath doesn't specify > that you have to have document order. > > Dunno. > Hm. That strikes me as a problem in the spec, although I guess one could argue that the other way. (I certainly could :) I got the sense anyway that there was order defined on the basic axis (like child) so I wonder why not everywhere? Difficulty in implementation? Then it's up to y'all. If that's the spec, and you are just going for spec compliance, say so and I'll 1) drop it and 2) find some kind of workaround in the part of my API that requires it... I'll go badger james about dom4j :) Thx geir > -bob > > ---------- Forwarded message ---------- > To: 'Amy Lewis' <[EMAIL PROTECTED]>, 'Evan Lenz' <[EMAIL PROTECTED]> > From: Michael Kay <[EMAIL PROTECTED]> > Date: Thu, 13 Dec 2001 19:18:03 -0000 > Subject: RE: [xml-dev] Nasty XPath expressions > Cc: 'bob mcwhirter' <[EMAIL PROTECTED]>, 'Kelvin Yeow' <[EMAIL PROTECTED]>, > [EMAIL PROTECTED] > >> Umm, no. >> >> Node-sets are ordered sets. The spec spends (too much?) time >> discussing the ordering of returned sets, which depend upon the axis. >> So it isn't exactly true that they are always in document order >> (particularly if you're using a complex expression that moves in >> multiple axes), but it is true that the nodes are returned in >> the order >> of encounter, as specified by the axis. Typically, this >> means document >> order. >> >> They are *not* unordered sets. > > Wrong. XPath 1.0 node-sets are unordered. > > If you read the material in section 2.4 again, you will see that it says an > axis has direction, and that the proximity position of a node in a node-set > depends on the direction of the associated axis. But it never says that > node-sets themselves are ordered, or that the nodes are "returned" in any > particular order. You might find the section easier to understand (I > certainly do) if you think of a node-set derived from a forwards axis as > being a list of nodes in document order, and a node-set derived from a > reverse axis as being a list of nodes in reverse document order, but the > spec very deliberately doesn't describe it that way. > > Mike Kay > > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this list use the subscription > manager: <http://lists.xml.org/ob/adm.pl> > > > _______________________________________________ > Jaxen-interest mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jaxen-interest -- Geir Magnusson Jr. [EMAIL PROTECTED] System and Software Consulting "Whoever would overthrow the liberty of a nation must begin by subduing the freeness of speech." - Benjamin Franklin _______________________________________________ Jaxen-interest mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jaxen-interest
