Attributes with Intent
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...)
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