Subject: Re: [xsl] Transitive closure for XPath From: Francis Norton <francis@xxxxxxxxxxx> Date: Fri, 20 Apr 2001 09:25:08 +0100 |
Christian Nentwich wrote: > > > I am not an expert in XPath details, so I wonder how feasible it would be to > disguise this as an axis: /*/node[1]/closure::id(./@child) ? A function is > definitely much easier to implement though. > Perhaps we could borrow a trick from physics and represent time as an axis? So we would still have a closure() function but have a notation for delayed evaluation: closure(/closure/node[1], delay::key("myKey", @child)) Or if that breaks XPath when you mix it with real axes, something real simple like a leading "#", eg: closure(/closure/node[1], #key("myKey", @child)) meaning "what follows the '#' must be a syntactically evaluatable XPath expression but must be passed to the function unevaluated." Does this make enough sense to submit to the XPath 2.0 editors as a suggestion? Francis. XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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