Its a very interesting way of doing it but I am worried about speed. I
had an idea VERY similar to it but am worried about speed. Yours would
probably be faster than what i was thinking. I will consider this as an
possible solution. Even if it isn't the best solution I could always do
this for now and then rewrite it to use <xsl:next-match/> when xalan
supports it.(I am pretty currently doesn't but it might...)
I do not know much about STX but I am sure it can be used to solve the
problem -- and it would be faster. The only issue I have with that
solution is that I am pretty sure its 'xpaths' (stxpaths) are a dumbed
down version of xpaths that do not have stuff like preceeding-sibilings.
David
Geert Josten wrote:
David,
Fidling around a bit brought me to the XSL you will find below. Some
notes though.
Particularly the part that multiple values have to be added to the same
attribute makes it quite difficult. I have for convenience chosen to add
separate class elements to the img content. You could merge these to a
class attribute with a separate transform.
I am very sure this stylesheet can be optimized a lot. It now has to
iterate through as many modes as there are xpaths + 2, which is not good
for performance. This could be optimizes if more knowledge is added to
the xpaths.xml. For instance by clustering less and more exact matches
into a group and converting the matches in this group to a choose
construct inside a template.
I hope this XSL gives you a jump start or can give you some inspiration
for futher problems..
By the way, I saw your cross post on the dev list and am curious to the
STX solution as well.
Cheers,
Geert
<?xml version="1.0" encoding="UTF-8"?>
<!-- $Id$ -->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:myxsl="http://www.w3.org/1999/XSL/TransformAlias";
xmlns:xpaths="xpaths"
xmlns:xhtml="xhtml"
>
<!--+ ==============================================================
| output
+-->
<xsl:namespace-alias stylesheet-prefix="myxsl" result-prefix="xsl"/>
<xsl:output method="xml"
version="1.0" encoding="utf-8" indent="yes" />
<!--+ ==============================================================
| default templates
+-->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()" />
</xsl:copy>
</xsl:template>
<xsl:template match="*">
<xsl:element name="{name()}">
<xsl:apply-templates select="@*|node()" />
</xsl:element>
</xsl:template>
<xsl:template match="xpaths:*">
<xsl:message terminate="yes">
Unknown or incorrect template instruction <xsl:value-of
select="name()" /> within context <xsl:value-of select="name(parent::*)"/>
</xsl:message>
</xsl:template>
<!--+ ==============================================================
| root template
+-->
<xsl:template match="/">
<xsl:apply-templates select="xpaths:xpaths" />
</xsl:template>
<xsl:template match="xpaths:xpaths">
<myxsl:stylesheet version="1.0">
<xsl:for-each select="namespace::*[not(name() = 'xpaths')]">
<xsl:copy />
</xsl:for-each>
<myxsl:output method="xml"
version="1.0" encoding="utf-8" indent="yes" />
<myxsl:template match="/|@*|node()">
<myxsl:copy>
<myxsl:apply-templates select="." mode="xpath1"/>
</myxsl:copy>
</myxsl:template>
<xsl:apply-templates select="xpaths:xpath" />
<myxsl:template match="/|@*|node()"
mode="xpath{count(xpaths:xpath) + 1}">
<myxsl:apply-templates select="@*|node()" />
</myxsl:template>
</myxsl:stylesheet>
</xsl:template>
<xsl:template match="xpaths:xpath">
<!-- default copying -->
<myxsl:template match="/|@*|node()" mode="xpath{position()}">
<myxsl:apply-templates select="." mode="xpath{position() + 1}"/>
</myxsl:template>
<!-- special case -->
<myxsl:template match="[EMAIL PROTECTED]" mode="xpath{position()}">
<xsl:apply-templates select="node()" />
<myxsl:apply-templates select="." mode="xpath{position() + 1}"/>
</myxsl:template>
</xsl:template>
<xsl:template match="xpaths:literal">
<xsl:apply-templates select="node()" />
</xsl:template>
</xsl:stylesheet>
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