[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] NAMESPACES: expressing commonality or distinction
>and allow applications to match > >http://www.w3.org/HTML > >or > >http://www.w3.org/HTML/Strict > >or > >http://www.w3.org/HTML/Strict/1.0 > >depending on what they care about > >PRO: uses existing namespace mechanism >CON: would require modification to XPath, etc. > It would definitely have performance implications. It would no longer be possible to put elements/attrs into pools and identify them by a pool id that can be very efficiently checked and validated. I would be very concerned about it from that perspective. If an element is no longer uniquely identified by URI:Name, then it cannot be internally uniquely identified either. And I wonder if saying "its an application thing" is going to float either. Many apps will rely on tools to do a lot of work for them (otherwise XML will have missed a big part of the boat), so all those tools would have to understand this scheme or the apps that need this kind of functionality wouldn't be able to use them very effectively perhaps. But how would you efficiently implement this kind of thing in general purpose tools? For example, how would a DOM tree diff tool handle such a thing so that only meaningful diffs to the application at hand would show up? I'm sure it could be done, but the question is it worth going down this road or just forcing all apps that need to do this to have effectively their own validation mechanisms, attribute uniqueness checks, and so on? ---------------------------------------- Dean Roddey Software Weenie IBM Center for Java Technology - Silicon Valley roddey@u... xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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