Re: [xsl] changing only one attribute of element copy

[David Carlisle <davidc@xxxxxxxxx>]

If in doubt dn't use // it's potetially a very expensive operation, it
means search teh entire document to arbitrary depth.


> <xsl:template match="//class[@name=$TargetCName]" mode="transform">

// isn't doing anything here it's the same as

<xsl:template match="class[@name=$TargetCName]" mode="transform">

     <xsl:copy-of select="//class[@name=$SrcCName]/field">

This searches the entire document (again for every class) to find a
class with name given by the global variable. If youy are lucky the
system may rewrite this common expression into a global variable but it
would probably be better to do it manually and have at the top level
outside any templates

<xsl:variable name="newfield"  select="//class[@name=$SrcCName]/field"/>

then in the template have
     <xsl:copy-of select="$newfield"/>
if you generate two attributes of the same name the second one wins so
     you can just go
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl;attribute name="id">some new id</xsl;attribute>
<xsl;apply-templates mode="transform"/>
..

or keeping it as you had, applying templates to attributes rather than
copying them, you just need to add templates for those attributes you
don't want copied
<xsl:template match="id">
<xsl:attribute name="id">some new id</xsl;attribute>
</xsl:template>


David

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