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Re: Grouping by attribute

Subject: Re: Grouping by attribute
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Wed, 21 Oct 2009 12:02:03 -0400
Re:  Grouping by attribute

At 08:33 AM 10/21/2009, you wrote:
Nice. I modified it slightly for the more complex structure of the
actual XML, but you essentially solved it.

But ... as so often, the problem as specified is just the tip of what could be a much larger iceberg.

What if your data has

  text <span>more text</text> text

What do you want to happen then?

By generating p elements only when you match "text()[parent::p]" (or, equivalently, "p/text()"), you succeed in splitting out all the text node children of p from their sibling elements. But your problem specification didn't actually say this was what you wanted to do -- and the problem of splitting only some of the elements is at least as common.

For that problem, you do in fact want to use grouping. (And I think it came up quite recently on the list).


Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
17 West Jefferson Street                    Direct Phone: 301/315-9635
Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
  Mulberry Technologies: A Consultancy Specializing in SGML and XML

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