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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: [XPath] matching elements which satisfy a specific
 >> But I'm proposing a content-model() function whose only reason for >> existence is simplification and terseness. > > At one stage XQuery did this. It had its own grammar for describing > content models, with all the paraphernalia of lists and unions and > sequences, and it allowed you to test whether a particular element > conformed to a particular content model (so-called "structural > typing"). Sounds great; anything online? > Everyone came down on them like a ton of bricks, :( > saying W3C > already had a language for doing that and it was called XML Schema. They don't seem to like the principle called TIMTOWTDI ... and the one where one chooses the least powerful tech/lang for each task. (simple grammar for simple models, full-blown schema lang for complex models) > So > they took it all out, leaving just the ability to test whether a > particular element is a valid instance of a particular schema-defined > type: "named typing". The result is vastly simpler, ... inside the pattern, but not overall, since the content is described elsewhere (and I wouldn't call WXS "vastly simple"). > but it does assume > that you want to define your content models in a schema and not in a > stylesheet - a reasonable assumption, in my view. I'd prefer choice. This way, the "structural typing"/content-model() could stay very terse and simple, and then there would be "named typing" for all the complex content models which are better described with WXS or RNG. But again: What you describe (XSLT2 + XML Schemas(WXS/RNG)) will probably be a lot more fun than XSLT + XPath1.0 for describing (matching/testing) content models. Tobi -- Vim users donate. http://iccf-holland.org/donate.html Web developers check. http://www.pinkjuice.com/check/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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