[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] XLink a special case in the self-describing Web?
Please correct me if I'm wrong about any of this. (1) XML Namespaces do not provide a way for a single element to conform to an element type in each of several schemas. Therefore, there is no way for a single element to be recognized as conforming to both the X:Foo and the Y:Bar element types. (2) XLink is now just attributes; the element type can be anything. This permits a single element to be recognized as an XLink and as whatever else it may be. (Whatever else it may be, it may still only be one element type in one single namespace, as far as I know.) This is a kind of sleight-of-hand: XLink elements are still XLink elements; we still expect certain combinations of attributes to appear in certain contexts and not in others. So, if my above understandings are correct, I tentatively conclude from this that XLink is not a namespace or a schema in the usual sense, because, among all of the kinds of element definitions that are possible, only the XLink element types are, de facto, exempt from the "one element, one element type name in one semantic space of element type names" rule. Can anybody create sets of attributes, just as has been done with XLink, that will constitute a semantic space, and thus effectively have elements identify themselves as conforming to certain element types without requiring that the generic identifier be used to identify the element type? If anybody can already do this, is this a methodology to which XML Schemas can provide validation services, by checking to see whether all of the attributes have been used in syntactically valid ways? If so, how? -Steve -- Steven R. Newcomb, President, TechnoTeacher, Inc. srn@t... http://www.techno.com ftp.techno.com NEW ADDRESS effective May 1, 2000: voice: +1 972 359 8160 fax +1 972 359 0270 405 Flagler Court Allen Texas 75013-2821 USA *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ ***************************************************************************
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