The reduction according the ancestor count (wihout "mode"):
<xsl:template match="@*">
<xsl:copy-of select=./>
</xsl:template>
<xsl:template match="node()">
<xsl:param name="level>1</xsl:param>
<xsl:copy>
<xsl:apply-templates select="@*"/>
<xsl:if test="$level < 4">
<xsl:apply-templates select="node()">
<xsl:with-param name="level" select="$level +
1"/>
</xsl:apply-templates>
</xsl:if>
</xsl:copy>
</xsl:template>
<!-- ..... -->
Regards,
tomi
-----Original Message-----
From: Andrew Welch [mailto:ajwelch(_at_)piper-group(_dot_)com]
Sent: Monday, June 06, 2005 6:03 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] Source Reducer
I have a source xml which is 19MB + I'm running the following "source
reducer" template against it using the
MSXML4 parser, however it is slow (has been running well over
2 min. now). Any suggestions on how to optimize this source reducer
template? Also, how does the ancestor match below work, what does it
do exactly?
<xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="/*/*[position() > 20]"/>
<xsl:template match="*[ancestor::*[3]]"/>
The final no-op template will match any element with 3 ancestors - it
means the result tree will be no more than 3 deep.
To improve performance you need to replace the use of the ancestor axis
with something else... but the only thing that instantly springs to mind
is to use modes eg:
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*" mode="second"/>
</xsl:copy>
</xsl:template>
<xsl:template match="node()|@*" mode="second">
<xsl:copy>
<xsl:apply-templates select="node()|@*" mode="stop"/>
</xsl:copy>
</xsl:template>
<xsl:template match="node()" mode="stop"/>
I'm sure there is a better way...
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