Dave,
This worked beautifully. Thanks.
I will have to read your informative response
carefully to get all the added value. Once again,
thanks for taking the time to help a new guy.
Mark
--- David Carlisle <davidc(_at_)nag(_dot_)co(_dot_)uk> wrote:
I don't think you need any variables, despite the
subject line,
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:strip-space elements="clause"/>
<xsl:output indent="yes"/>
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
<xsl:template match="word">
<word
soundtime="{((.|preceding-sibling::sound)/@time)[last()]}">
<xsl:apply-templates/>
</word>
</xsl:template>
<xsl:template match="sound"/>
</xsl:stylesheet>
to comment on your code
<xsl:template match="//clause/*">
there's never a need to start a match pattern with
// it doesn't chage
which nodes are matched (not quite true in xslt)
<xsl:if test="local-name() = 'sound'">
generally it's better to avoid doing string tests
against element names
<xsl:if test="self::sound">
is likely to be more efficient 9and safer in a
namespace context)
<xsl:if test="local-name() = 'sound'">
<xsl:param name="soundtime" select="@time" />
</xsl:if>
xsl:param can only be used at the top level as a
template, where they
must come first, or for global parameters must be at
the top levl of the
styleseet. You could use xsl:variable there but the
scope of a variable
binding is to the end of the containing element, so
the variable would
go out of scope at the </xsl:if>
In more complicated case you do need to use a
parameter but in that case
you need to apply templates in a different order,
instead of applying
templates to all the children, just apply templates
to the first child,
then have each child apply templates to the next
sibling, passing on a
paramater with xsl:with-param. This is usually known
as a tree-walking
idiom, google should show some examples, but in this
case you can
directly evaluate the required value on each node,
so there is no need
for a parameter to accumulate earlier results.
David
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