Subject: RE: [xsl] Relative XPATH between 2 nodes From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Fri, 28 Jan 2005 15:31:51 -0000 |
> If the input is just the Xpaths then clearly one algorithm > is to delete > "equivalent" steps from the start of each path, Only if the paths select single nodes. If the paths are a/b/c[@x=3]/d and a/b/c[@x=4]/d then you can't return ../../c[@x=4]/d unless you know there is only one b. The problem is seriously under-specified. Michael Kay http://www.saxonica.com/ and then to enough > ../ to the second for each of the remaing steps in the first so > > /a/b[2]/c/d > /a/b[2]/e/f > > goes in the first stage to > c/d > e/f > > and so finally returns a relative path of > ../../e/f > > > However given > id('x') > id('y') > > you'd just have to return > id('y') > > On the other hand, if you also input a particular document into teh > algorithm and ask for a relative Xpath that gets from one to teh other > _in that document_ you may well be able to return something else, eg > *[1] > if the structrure was > <foo id="x"><bar id="y"/>.... > > David > > ______________________________________________________________ > __________ > This e-mail has been scanned for all viruses by Star. The > service is powered by MessageLabs. For more information on a proactive > anti-virus service working around the clock, around the globe, visit: > http://www.star.net.uk > ______________________________________________________________ > __________
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