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

2019-03-11 02:22:27
Hi Martin,
   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";

                         xmlns="http://www.w3.org/2005/xpath-functions";

                         version="3.0">

    <xsl:output method="text"/>

    <xsl:template match="root">
        <map>
            <map key="{local-name()}">
                <array key="val">
                    <xsl:apply-templates/>
                </array>
            </map>
        </map>
    </xsl:template>

    <xsl:template match="val">
        <!--<number>{.}</number>-->
        <number><xsl:value-of select="."/></number>
    </xsl:template>

    <xsl:template match="/">
        <xsl:variable name="json-xml">
            <xsl:apply-templates/>
        </xsl:variable>
        <xsl:value-of select="xml-to-json($json-xml, map { 'indent' :
true() })"/>
    </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?

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
<http://www.w3.org/1999/XSL/Transform>

    xmlns:xs="http://www.w3.org/2001/XMLSchema";
<http://www.w3.org/2001/XMLSchema>
    exclude-result-prefixes="#all"
    xmlns="http://www.w3.org/2005/xpath-functions";
<http://www.w3.org/2005/xpath-functions>
    expand-text="yes"
    version="3.0">

  <xsl:mode on-no-match="shallow-skip"/>

  <xsl:output method="text"/>
  <xsl:strip-space elements="*"/>

  <xsl:template match="root">
      <map>
          <map key="{local-name()}">
              <array key="val">
                  <xsl:apply-templates/>
              </array>
          </map>
      </map>
  </xsl:template>

  <xsl:template match="val">
      <number>{.}</number>
  </xsl:template>

  <xsl:template match="/">
     <xsl:variable name="json-xml">
         <xsl:apply-templates/>
     </xsl:variable>
     <xsl:value-of select="xml-to-json($json-xml, map { 'indent' : true()
})"/>
  </xsl:template>

</xsl:stylesheet>





-- 
Regards,
Mukul Gandhi
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