Re: [xsl] Templates for different kinds of tags?

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2007-03-22 19:19 +0100, Thomas Zastrow wrote:
> I'm not so familiar with XSL, please be patient ;-)

I think you will find people on this list very patient for those who 
are eager to learn.

> I have a XML-document (not HTML) with tables like this:
>
> <table>
> <tr>
> <td></td><td></td>
> </tr>
> </table>
>
> So, I have three templates for them:
>
> <xsl:template match="table">
> <xsl:template match="tr">
> <xsl:template match="td">
>
> Now, I want to use different kinds of tables in my XML-doc like
>
> <table style="simple">
> <table style="xyz">
>
> Depending on the style-attribut, I can change the template-code for 
> <table> with  xsl:choose.

I would not recommend using <xsl:choose> unless the differences are 
very small and most of the template would be the same for both cases.

> But, the <tr>- and <td>-tags are still the same code, so, they will 
> always use the same templates. But I also want to change the code 
> for tr and td, depending on the style of the complete table.
>
> Is this possible or have I to write the xsl:choose - statement again 
> in the tr- and in the td-templates?

Without more detail of your problem, my hunch is that you would just 
do something like this:

<xsl:template match="table[@style='simple']">
<xsl:template match="table[@style='xyz']">
<xsl:template match="table[@style='simple']/tr">
<xsl:template match="table[@style='xyz']/tr">
<xsl:template match="table[@style='simple']/tr/td">
<xsl:template match="table[@style='xyz']/tr/td">

In this fashion you are allowing the processor to optimize the 
matching.  My XSLT students who come to class with a programming 
background tend to latch onto those facilities they are used to using 
as programmers without realizing there are built-in facilities that 
declare what they need done so that the processor can choose to do 
them as best as it sees fit.

Note that in a match pattern the right-most node test identifies the 
node being matched and the detail in the steps to the left qualify 
the ancestry (typically) of the focus node test.

I hope this helps.

. . . . . . . . . . . . Ken


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