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RE: [xsl] alternative for modes

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> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Peter Billen
> Sent: 12 February 2004 22:32
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] alternative for modes
> 
> 
> Oki I think it's time for an example :) Imagine:
> 
> <streetrace>
> 	<car>
> 		<owner>...</owner>
> 		...
> 	</car>
> 	<car>
> 		<owner>...</owner>
> 		...
> 	</car>
> 	...
> </streetrace>
> 
> Now imagine you want to print out all the cars of the 
> streetrace: first all in red, then in blue, sorted by the 
> owner of the car(in my example of course, everything is a bit 
> more complicated, especially the sorting code). The best I 
> came up with, is the following:
> 
> <xsl:template match="streetrace>
> 	<!-- print cars in blue !-->
> 	<xsl:call-template name="giveCarsSorted">
> 		<xsl:with-param name="mode" select="'blue'"/>
> 	</xsl:call-template>
> 	<!-- in red !-->
> 	<xsl:call-template name="giveCarsSorted">
> 		<xsl:with-param name="mode" select="'red'"/>
> 	</xsl:call-template>
> </xsl:template>
> 
> <xsl:template name="giveCarsSorted">
> 	<xsl:param name="mode"/>
> 
> 	<xsl:apply-templates> // this will go to each <car>-element
> 		<xsl:sort select="car/owner"/> // sort on 
> <owner> in <car>
> 		<xsl:with-param name="mode" select="$mode"/> // 
> propagate $mode
> 	</xsl:apply-templates>
> </xsl:template>
> 
> <xsl:template match="car">
> 	<xsl:param name="mode"/>
> 
> 	<xsl:if test="$mode = 'blue'">
> 		<font color="blue"><xsl:value-of 
> select="."/></font><br/>
> 	</xsl:if>
> 	<xsl:if test="$mode = 'red'">
> 		<font color="red"><xsl:value-of select="."/></font><br/>
> 	</xsl:if>
> </xsl:template>
> 
> I hope I didn't make any big mistakes, since I haven't tested 
> it myself.

Why are you mixing the sorting and the fact that you want blue or red ?

There are many ways of solving this problem w/o modes, perhaps you could
use a top level nested xsl:variable to sort the data first

<xsl:variable name="data-sorted-by-owner">
	<xsl:apply-templates select="//car">
          <xsl:sort select="car/owner"/>
	</xsl:apply-templates>
</xsl:variable>

<xsl:variable name="data-sorted-by-car">
	<xsl:apply-templates select="//car">
          <xsl:sort select="car"/>
	</xsl:apply-templates>
</xsl:variable>

Then refer to $data-sorted-by-car or $data-sorted-by-owner.

Use a simple match template for this and create multiple variables for
whatever sorting your want...then use a named template for the color. At
worst this solution may require you to use processor specific node-set
function.

Gl, jim fuller


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