Re: [xsl] is XPath 3.1 xml-to-json() function useful

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Am 11.03.2019 um 08:22 schrieb Mukul Gandhi gandhi.mukul@xxxxxxxxx:
> Hi Martin,
> B  B Thanks for the answer.
>
> Deriving from your XSLT stylesheet, I wrote following that works,
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> B  B  B  B  B  B  B  B  B  B  B  B  B xmlns="http://www.w3.org/2005/xpath-functions";
> B  B  B  B  B  B  B  B  B  B  B  B  B version="3.0">
> B  B  <xsl:output method="text"/>
> B  B  <xsl:template match="root">
> B  B  B  B  <map>
> B  B  B  B  B  B  <map key="{local-name()}">
> B  B  B  B  B  B  B  B  <array key="val">
> B  B  B  B  B  B  B  B  B  B  <xsl:apply-templates/>
> B  B  B  B  B  B  B  B  </array>
> B  B  B  B  B  B  </map>
> B  B  B  B  </map>
> B  B  </xsl:template>
> B  B  <xsl:template match="val">
> B  B  B  B  <!--<number>{.}</number>-->
> B  B  B  B  <number><xsl:value-of select="."/></number>
> B  B  </xsl:template>
> B  B  <xsl:template match="/">
> B  B  B  B  <xsl:variable name="json-xml">
> B  B  B  B  B  B  <xsl:apply-templates/>
> B  B  B  B  </xsl:variable>
> B  B  B  B  <xsl:value-of select="xml-to-json($json-xml, map { 'indent' : 
> true() })"/>
> B  B  </xsl:template>
> </xsl:stylesheet>
>
> If I write, <number>{.}</number> in above stylesheet, as you've 
> suggested instead of mine <number><xsl:value-of select="."/></number>, 
> I get following error
>
> xml-to-json: Invalid number: {.}
> (produced by Saxon PE)
>
> Any idea, why this is so?


Well, my suggestion tried to make use of the XSLT 3 feature of text 
value templates with the attribute expand-text="yes"

>
>     <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>     <http://www.w3.org/1999/XSL/Transform>
>
>     B B B  xmlns:xs="http://www.w3.org/2001/XMLSchema";
>     <http://www.w3.org/2001/XMLSchema>
>     B B B  exclude-result-prefixes="#all"
>     B B B  xmlns="http://www.w3.org/2005/xpath-functions";
>     <http://www.w3.org/2005/xpath-functions>
>     B B B  expand-text="yes"
>

declared above

>     B B B  version="3.0">
>
>     B  <xsl:mode on-no-match="shallow-skip"/>
>
>     B  <xsl:output method="text"/>
>     B  <xsl:strip-space elements="*"/>
>
>     B  <xsl:template match="root">
>     B B B B B  <map>
>     B B B B B B B B B  <map key="{local-name()}">
>     B B B B B B B B B B B B B  <array key="val">
>     B B B B B B B B B B B B B B B B B  <xsl:apply-templates/>
>     B B B B B B B B B B B B B  </array>
>     B B B B B B B B B  </map>
>     B B B B B  </map>
>     B  </xsl:template>
>
>     B  <xsl:template match="val">
>     B B B B B  <number>{.}</number>
>

so that here the {.} is evaluated and not taken literally.