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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: RE: XQuery and DTD/Schema?
 At 11:24 AM 7/8/2002 -0400, Jonathan Robie wrote: >As soon as you need a programming language, this starts to fall down. I >wouldn't want to write my own Java and JVM, or my own C++ compiler. I >could imagine doing it myself, given infinite time, but my imagination >sometimes runs wild. Nah. I don't create my own microprocessors either, though I spent yesterday reviewing my understanding of transistors and logic gates. I think most programmers find having that level of control over their code to be a pretty different from having that level of control over their data. >I agree that XQuery is beyond the ability of most programmers to implement >by themselves. One estimate I heard recently was that it takes 6 *very* >good people about 6 months. But how long would it take most people to >write compilers or interpreters for other programming languages or query >languages? Most programming languages and query languages have multiple implementations. Few have as many implementations as XML 1.0, and there are lots of reasons for that. >I don't think that a query processor is as simple to write as an XML >parser. That doesn't mean that queries are bad. You seem utterly unwilling to acknowledge that the style of processing you're pushing with XQuery is very very different from the style of processing that takes place in parsing XML documents. I'm not sure this is worth arguing any more, but I have to say that I have less and less sympathy for W3C XML Query (and W3C XML Schema) every time this wheel spins around. At this point, I have no confidence that the W3C or its working groups have any understanding of why XML was attractive in the first place or what it's actually good for. It seems to have gotten lost in the roar of vendors rushing to pile on tools for programmers who can't adjust to a slightly different view of information. Simon St.Laurent "Every day in every way I'm getting better and better." - Emile Coue 
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