I've used this approach myself to help determine when a new element
has been added or someone starts using an element I've not seen used.
In this case I was in a when clause and I was trying to capture
various combinations of markup errors.
<xsl:when
test="ancestor::ipb/figure/subfig/graphic[(_at_)boardno=$sht_num]/@boardno">
So I was trying to understand what value this particular test would
return so I could trap it.
In this case it was originally used like this and the function was
indicating an empty or null value was being returned, so I was trying
to match on that empty value.
unparsed-entity-uri(ancestor::ipb/figure/subfig/graphic[(_at_)boardno=$sht_num]/@boardno)
In this case I probably should have rearranged the when and otherwise
tests and matched the good value and let the otherwise handled
everything else. ultimately I also realized there was no value in
doing this elaborate matching as the result is the same as the $sht_num.
thanks everyone
..dan
At 01:13 PM 10/4/2009, you wrote:
At 2009-10-04 09:09 -0400, Dan Vint wrote:
One other thought on this. The reason it is important to know if I
don't have a match is that there should always be a match and it is
important to report this state.
Wouldn't this be satisfied with the following using priority?
<xsl:template match="node()|@*" priority="-1">
<xsl:message>Not handled: .....
... or even better using importance:
<xsl:import href="debug.xsl"/>
debug.xsl:
<xsl:template match="node()|@*">
<xsl:message>Not handled: .....
I have this in most of my stylesheets ... I put this lowest
importance imported template into my import tree so as not to
interfere with my other template rules and to tell me what isn't
being handled by my code.
Such a template rule overrides the built-in template rules and is
less important than all of my own template rules, so it catches what
I don't catch in my other template rules.
I hope this helps.
. . . . . . . . . . Ken
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