Re: Diagram of XPath axes

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Subject: Re: Diagram of XPath axes
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 24 May 2012 08:58:05 -0400

At 2012-05-24 08:58 -0400, you wrote:

One additional question, please:

Preceding nodes do not include ancestors, which I've thought is odd. It includes siblings, but not parent or grand-parent, etc.

When looking at an XML file in an editor, ancestors surely seem to be preceding where I am in the document.

But perhaps "preceding" means nodes before "me" but not including anything that contains "me".

Is that a useful way to look at "preceding"?

When I talk about my diagram in the classroom, I also use the "me" approach and I use the following distinctions:

- the self axis is me - the preceding nodes are all those nodes that start and end before I start - the following nodes are all those nodes that start and end after I end - the ancestor nodes are all those nodes that have started before me but not yet ended - the descendent nodes are all those nodes that start after I've started and end before I end

... and that covers off all of the nodes in the document. I cite the bizarre XML document above the diagram so that students can see the starting and the ending as I quote above.

I hope this helps.

. . . . . . . . . . Ken

--
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Current Thread

Re: Diagram of XPath axes, (continued)
- Ihe Onwuka - 23 May 2012 15:36:49 -0000
- Message not available
  - G. Ken Holman - 23 May 2012 15:37:13 -0000
    - G. Ken Holman - 23 May 2012 15:52:13 -0000
- mlcook - 24 May 2012 12:59:14 -0000
  - Message not available
    - G. Ken Holman - 24 May 2012 13:05:44 -0000 <=
  - Ihe Onwuka - 24 May 2012 13:09:15 -0000
    - Imsieke, Gerrit, le-tex - 24 May 2012 17:02:38 -0000
    - Wendell Piez - 24 May 2012 22:12:03 -0000
    - Imsieke, Gerrit, le-tex - 24 May 2012 22:45:30 -0000

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