Re: [xsl] finding elements lowest in hierarchy?

Subject: Re: [xsl] finding elements lowest in hierarchy?
From: "james walker" <jameswalkerandy@xxxxxxxxxxx>
Date: Wed, 28 Jan 2004 10:26:41 +0000
I have had a bit of practice with xpath but any suggestions as to where i could learn more would be greatly appreciated!
cheers



From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] finding elements lowest in hierarchy?
Date: Tue, 27 Jan 2004 10:38:11 -0500

At 2004-01-27 13:53 +0000, james walker wrote:
What happens if the hierarchy is alot bigger? Is it possible to use "descendent" to find if any of the lowest level descendents of a particular node contain a particular attribute?

Sure ... review what I said earlier:


To look anywhere below oneself, use ".//" ... to look for any element use "*" ... to filter only those elements that do not have any element, comment or PI children (i.e. lowest in the hierarchy), use the predicate "[not(node())]" and to check for a particular attribute existing use the predicate "[@minimum]".

Just skip the predicate that qualifies the node as being at the bottom, and you end up with:


test=".//*[@minimum]"

as the boolean test of any elements with the attribute. Alternatively since all you are doing is testing you could just have:

test=".//*/@minimum"

to address the attributes, but the way you worded it you wanted to address the elements that have the attribute.

How much reading of XPath have you done? I would recommend reading the specification or one of the many resources that can help you understand the composition of location path expressions.

......................... Ken


-- Public courses: sign up for one or both soon to reserve your seat! Each week: Monday-Wednesday: XSLT/XPath; Thursday-Friday: XSL-FO Washington, DC: 2004-03-15 San Francisco, CA: 2004-03-22 Hong Kong, China: 2004-05-17 Bremen, Germany: 2004-05-24 World-wide on-site corporate, government & user group XML training

G. Ken Holman                 mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
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