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RE: [xsl] Get to 2 max values and element names


Subject: RE: [xsl] Get to 2 max values and element names
From: "W Charlton" <XSLList@xxxxxxxxxx>
Date: Fri, 11 May 2012 19:58:32 +0100

Wendell,

I thought temporary trees would come up. This transform is actually done in
two stages so that is possible and is possibly the way I will go using xsl's
sort-by which would be the obvious route I guess. I was trying to avoid
putting too much math(s) in the first transform as the first xsl is reused
elsewhere.

We actually take some source data and transform it into a standard format and
then do a second transform which is where I need to use the 4 values to do
some other stuff; along the lines of:

	<xsl:choose>
		<xsl:when test="(PenultValue div TopValue) &gt; 0.3">
			<xsl:text>In this test </xsl:text>
			<xsl:value-of select="TopName"/>
			<xsl:text> was over 30% more effective than </xsl:text>
			<xsl:value-of select="PenultName"/>
		</xsl:when>
		<xsl:when test="(PenultValue div TopValue) &gt; 0.5">
			<xsl:text>In this test </xsl:text>
			<xsl:value-of select="TopName"/>
			<xsl:text> was over twice as effective as </xsl:text>
			<xsl:value-of select="PenultName"/>
		</xsl:when>
		... You get the idea
	</xsl:choose>

We COULD also interrupt the second or even intercept the data before the first
transform and poke the data into SQL and spit it out again and inject our 4
elements. But I was curious to know if there was some way known of doing this
with recursion or keys or something, completely in XSLT (1) using MSXML ;).
Extension functions could also be used if need be.

For information the modifiers are hard coded so that if <Modifier/> = x then
the four values are set as in:

When the Modifier = 1, the 4 Modifying vars are:
vSteveMod = 1.62
vHelenMod = 2.65
vJackMod = 0.34
vPetraMod = 1.3

When the Modifier = 2, the 4 Modifying vars are:
vSteveMod = 3.85
vHelenMod = 0.89
vJackMod = 6.5
vPetraMod = 14.6

When the Modifier = 1, the 4 Modifying vars are:
vSteveMod = 0.05
vHelenMod = 0.22
vJackMod = 0.22
vPetraMod = 2.85
etc...
Mathematically random

You have the whole weekend, make it a good one.

William Charlton
The yMonda team
yMonda Limited
w: www.ymonda.net


-----Original Message-----
From: Wendell Piez [mailto:wapiez@xxxxxxxxxxxxxxxx]
Sent: 11 May 2012 16:34
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Get to 2 max values and element names

William,

On 5/11/2012 9:36 AM, W Charlton wrote:
> All using XSLT1

Your requirements more or less demand the use of temporary trees and
pipelining. Can you use at least use a node-set() extension function, or
would you be forced to pipeline on the file system?

XSLT 1.0 was explicitly not designed for this sort of transformation.

In XSLT 2.0, it would be a fun little problem (for those who consider
such little problems fun).

Cheers,
Wendell

--
======================================================================
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
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