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Re: XPath challenge: can you simplify this XPath expression?

  • From: Philippe Poulard <philippe.poulard@s...>
  • To: "Costello, Roger L." <costello@m...>
  • Date: Mon, 11 May 2009 18:49:51 +0200

Re:  XPath challenge: can you simplify this XPath expression?
Costello, Roger L. a écrit :
> Hi Folks,
> I created an XPath expression and I am wondering if it can be simplified.
> The XPath expresses this:
>    There must be one child Title element and
>    there must be zero or more child Author elements and
>    there must be one child Date element and
>    nothing else.
> Here's the XPath 2.0 expression I created:


I don't know how to write it with XPath 2, but wouldn't it be simpler to 
say: "the context has the type xxx" where xxx is the type defined in a 
schema, using schema-element() ?

I'm almost sure Saxon-SA can do that... any confirmation ?

>    count(Title) eq 1 and
>    count(Author) ge 0 and
>    count(Date) eq 1 and
>    count(*[not(name() = ('Title','Author','Date'))]) eq 0
> I think this is the simplest possible XPath, but perhaps you can see a simpler expression?
> /Roger
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              (. .)
|      Philippe Poulard       |
        Have the RefleX !

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