RE: TOC Problem

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Subject: RE: TOC Problem
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Thu, 03 Mar 2005 13:20:17 -0500

Frank,

At 09:31 AM 3/3/2005, you wrote:

THE PROBLEM:
Ok, i am able to fetch all the beginnings of the speeches per speaker. But
if i access a further speech of a speaker
, further means all speeches after the first one, the TOC is falsly extended
in this way:

Table Of Content
Joe.........1, 3, 7
Bob............2, 5
Joe........... 3, 7  <- false
Bob...............5  <- false
Joe...............7  <- false

So i have to memorize all the speakers i have already treated to treat them
not again. But i do not know how to memorize!?

That's why this is a grouping problem (which was my hint yesterday, and someone else's, I think).

An essential aspect of grouping is de-duplicating (boy do I wish there were another word for that ... I suppose "removing duplicates" might do), so that each group is processed once. If you do not de-duplicate your list of grouped items, each group is processed as many times as there are members of the group.

That's why you're getting three listings for Joe. If he appeared a fourth time you'd get a fourth listing.

Look again at those resources on grouping and see whether they don't help.

In particular, in XSLT/XPath it's not a matter of "memorizing" whether a name has been encountered already, but rather of selecting not "all names" but rather "all names *the first time they appear*". Having selected all names the first time they appear, you then proceed to process, for each of those names, all their appearances.

That's how they get grouped -- and this is, in fact, the essence of the "Muenchian method" of grouping in XSLT (which you will find to be well-documented).

Regards,
Wendell


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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Current Thread

Re: TOC Problem, (continued)
- Wendell Piez - 2 Mar 2005 21:50:34 -0000
- JBryant - 2 Mar 2005 22:41:45 -0000
- Pawson, David - 3 Mar 2005 09:10:31 -0000
  - Frank Lorenz - 3 Mar 2005 14:31:47 -0000
    - Wendell Piez - 3 Mar 2005 18:27:48 -0000 <=
- Pawson, David - 3 Mar 2005 15:45:43 -0000
  - Jirka Kosek - 3 Mar 2005 19:16:32 -0000
    - Frank Lorenz - 3 Mar 2005 20:56:36 -0000
    - Michael Kay - 3 Mar 2005 22:33:28 -0000

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RE: TOC Problem, Frank Lorenz	Thread	RE: TOC Problem, Pawson, David
RE: escaping/entities on the , Michael Kay	Date	Re: escaping/entities on the , Gabriel K.
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