Re: conditional XSL to XSL

[Jeff Lansing <jeff at dtai dot com>]

Jeff Lansing wrote:

> Michael Kay wrote:
>
> > >   <xsl:template match="{$match-value}">
> >
> > The match attribute of xsl:template is not one of the (small number of)
> > attributes that are interpreted as attribute value templates.
> >
> <deleted stuff/>
> the only problem would seem to be getting the right stuff
> into these 'value1' and 'value2' strings.
>

Following a suggestion of David Carlisle, regarding another poster's
question, to "drop out of xpath, to xslt", I can now solve this problem with:

<x:template match="el">
  <x:variable name="match-value">
    <x:if test="@attr = 'x'">tr[@class='title']</x:if>
    <x:if test="not(@attr = 'x')">tr[@class='title' and position() &gt; 1]</x:if>

  </x:variable>
  <xsl:template match="{$match-value}">
    <xsl:value-of select="foo"/>
    <!--whole bunch of other complicated stuff-->
  </xsl:template>
</x:template>

which yields these two templates in any of xalan,
xt, or saxon (oracle differs trivially in having &#39; for '):

<xsl:template match="tr[@class='title']">
  <xsl:value-of select="foo"/>
</xsl:template>
<xsl:template match="tr[@class='title' and position() &gt; 1]">
  <xsl:value-of select="foo"/>
 </xsl:template>

as desired.
Why? What about the note in 7.6.2, which seems to forbid
this in two different ways? Perhaps in this context of aliased
named spaces <xsl:template ...> is not really a named XSLT
object, and the value of its match attribute isn't really an
expression or pattern.

Jeff


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