Re: finding elements lowest in hierarchy?

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Subject: Re: finding elements lowest in hierarchy?
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
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


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Current Thread

finding elements lowest in hierarchy?
- james walker - Tue, 27 Jan 2004 07:42:20 -0500 (EST)
  - David Carlisle - Tue, 27 Jan 2004 08:21:00 -0500 (EST)
  - G. Ken Holman - Tue, 27 Jan 2004 08:31:27 -0500 (EST)
  - <Possible follow-ups>
  - james walker - Tue, 27 Jan 2004 08:53:42 -0500 (EST)
    - G. Ken Holman - Tue, 27 Jan 2004 10:38:51 -0500 (EST) <=
      - Wendell Piez - Tue, 27 Jan 2004 18:13:14 -0500 (EST)
  - james walker - Wed, 28 Jan 2004 05:27:19 -0500 (EST)
    - G. Ken Holman - Wed, 28 Jan 2004 06:57:29 -0500 (EST)
  - Strolia-Davis Christopher Contr MSG/MAT - Wed, 28 Jan 2004 09:55:08 -0500 (EST)

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