Re: [xml-dev] XPath challenge: can you simplify this XPath expression?

[John Snelson <john.snelson@oracle.com>]

I'll start.

count(Author) ge 0 == true()

So you can eliminate that from the predicate.

John

Costello, Roger L. wrote:
> 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:
>   
>    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
> _______________________________________________________________________
> 
> XML-DEV is a publicly archived, unmoderated list hosted by OASIS
> to support XML implementation and development. To minimize
> spam in the archives, you must subscribe before posting.
> 
> [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/
> Or unsubscribe: xml-dev-unsubscribe@lists.xml.org
> subscribe: xml-dev-subscribe@lists.xml.org
> List archive: http://lists.xml.org/archives/xml-dev/
> List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
> 


-- 
John Snelson, Oracle Corporation            http://snelson.org.uk/john
Berkeley DB XML:            http://oracle.com/database/berkeley-db/xml
XQilla:                                  http://xqilla.sourceforge.net