Re: [xsl] clever ways to dynamically copy/create element structure as needed?

["Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Using parse-xml() to parse a literal string at run-time is going to be pretty
inefficient (although it might be optimiser if you're lucky). It might be a
bit more wordy, but a global variable

<xsl:variable name="empty-prolog" as="element(prolog)">
  <prolog/>
</xsl:variable>

is going to be a lot more efficient.

> On 2 Oct 2022, at 16:04, Chris Papademetrious
christopher.papademetrious@xxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Aaand posting again because I forgot the <xsl:copy> on the bmetadatab
template:
>
>
>   <xsl:mode name="add-data" on-no-match="shallow-copy"/>
>
>   <xsl:template match="topic" mode="add-data">
>     <xsl:copy>
>       <xsl:apply-templates select="@*"/>
>       <xsl:apply-templates select="title,titlealts,shortdesc,abstract"/>
>       <xsl:apply-templates select="(prolog,
parse-xml('&lt;prolog/&gt;'))[1]" mode="add-data"/>
>       <xsl:apply-templates select="body,related-links,topic"/>
>     </xsl:copy>
>   </xsl:template>
>
>   <xsl:template match="prolog" mode="add-data">
>     <xsl:copy>
>       <xsl:apply-templates select="@*"/>
>       <xsl:apply-templates
select="author,source,publisher,copyright,critdates,permissions"/>
>       <xsl:apply-templates
select="(metadata,parse-xml('&lt;metadata/&gt;'))[1]" mode="add-data"/>
>       <xsl:apply-templates
select="change-historylist,resourceid,data,sort-as,data-about,foreign,mathml,
svg-container,unknown"/>
>     </xsl:copy>
>   </xsl:template>
>
>   <xsl:template match="metadata" mode="add-data">
>     <xsl:copy>
>       <xsl:apply-templates select="@*"/>
>       <xsl:apply-templates
select="audience,category,keywords,prodinfo,othermeta"/>
>       <xsl:apply-templates select="data[not(@name = 'prefix')]"/>
>       <data name="prefix">my-prefix</data>
>       <xsl:apply-templates
select="sort-as,data-about,foreign,mathml,svg-container,unknown"/>
>     </xsl:copy>
>   </xsl:template>
>
>
> Sorry for all the list noise. I get too excited when my XSLT fiddle
worksb&
>
> Chris
>
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