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RE: [xsl] Problem with xsl:template using XSLT 1.0

2007-12-05 09:43:26
    Remember that your <xsl:template/> elements should match
    fairly generically (match="player" in this case), and
    your <xsl:apply-templates/> elements should be where you
    narrow down your selection.

  I just say that in general, I would give instead the 
opposite advice.  Of course, there is place for both 
patterns, and I expect any not-simple-toy-stylesheet to use 
both.  With experience, when using one or the other become 
quite obvious.

To me the telltale sign that you've got it wrong is when the body of the
xsl:template rule consists of an xsl:choose instruction.

There are many cases where it really doesn't matter too much. For example,
"process all attributes except width and height" (which came up this
morning) can equally well be written as

<xsl:apply-templates select="@* except (@width, @height)"/>

or as <xsl:apply-templates select="@*"/> with

<xsl:template match="@width|@height"/>

There really isn't all that much to choose between them. However, if you're
only processing a very small proportion of the nodes, then selecting the
nodes to be processed in the select attribute of xsl:apply-templates will
probably be more efficient.

Michael Kay
http://www.saxonica.com/



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