Re: [Xquery] 3.3.2 Filter Expressions (editorial comment on example)

It's not clear whether the xpath1 distinction between predicates in axis
steps and filters is really doing much in xpath2/xquery but anyway as it
is, you are right (that I'm wrong:-)

So It seems easiest way to get a filter expression is to use a ()
expression rather than an axis step; something like

  fn:doc("zoo.xml")/something/(dog|cat)[1]

> It's not easy to find a reasonable example of a filter expression inside a 
> path expression!

hmm I'm not sure my example meets a reasonableness criterion:-)


why can't ForwardStep | ReverseStep be moved into PrimaryExpression so
that AxisStep can be deleted and filterexpression unified with
stepexpression
 that would unify all uses of [...] into one place (but this is gut
reaction while answering your mail, I haven't really analysed the
grammar that would result.

David


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