Re: Attributes with Intent
At 08:33 04/05/98 -0400, David Megginson wrote: >Peter Murray-Rust writes: > > > It's reasonable to assume that generic text-aware XML software > > might be asked "please find all elements in a document which are > > expressed in German." It can't look for all elements with > > xml:lang="de" because they don't have this explicitly. So general > > mechanisms such as XPointers can't be used, and bespoke software > > must be written. This software (presumably) finds all elements > > which *do* have the attribute and continues recursively. > >From a logical perspective, your query is simply > > Find all elements in a document where the element or the nearest > ancestor with a value for the xml:lang attribute specifies "de" as > the attribute's value. > >With SDQL, for example, this test is surprisingly simple: > > (equal? (inherited-attribute-string "xml:lang") "de") > >Your point is well-taken, though: fragments of XML documents are often >tightly bound to their context (similar situations would involve >attributes for effectivity, security level, revision status, etc.). > > >All the best, > > >David > >-- >David Megginson ak117@f... >Microstar Software Ltd. dmeggins@m... > http://home.sprynet.com/sprynet/dmeggins/ > >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/ >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...) > > Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic net connection VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary http://www.venus.co.uk/vhg 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/ 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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