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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 3:55 PM -0400 7/6/02, Jonathan Robie wrote: >That's not layering, that's deciding that data is not typed unless I >require explicit casts, convert it to Java or relational data, or >whatever. And that makes many simple examples come out wrong, eg: > > let $x := <foo xsi:type="decimal">39.42</foo> > let $y := <foo xsi:type="decimal>147.23</foo> > return > if ($x < $y) > then "x is less" > else "y is less" > >Your approach would mean that the above query would return "y is >less". Trust me, many users of XQuery would not like that. > No it wouldn't, at least not with any reasonable less than operator. Such an operator should either convert its arguments to numbers or fail with a syntax error or perhaps an exception. If you're using a numeric operator to do string comparisons or document order comparisons or something like that, then that's the mistake, not the absence of explicit typing. -- +-----------------------+------------------------+-------------------+ | Elliotte Rusty Harold | elharo@m... | Writer/Programmer | +-----------------------+------------------------+-------------------+ | XML in a Nutshell, 2nd Edition (O'Reilly, 2002) | | http://www.cafeconleche.org/books/xian2/ | | http://www.amazon.com/exec/obidos/ISBN%3D0596002920/cafeaulaitA/ | +----------------------------------+---------------------------------+ | Read Cafe au Lait for Java News: http://www.cafeaulait.org/ | | Read Cafe con Leche for XML News: http://www.cafeconleche.org/ | +----------------------------------+---------------------------------+ 
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