[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

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

Subject: Re: is XPath 3.1 xml-to-json() function useful
From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 11 Mar 2019 06:34:33 -0000
Re:  is XPath 3.1 xml-to-json() function useful
Am 11.03.2019 um 07:04 schrieb Mukul Gandhi gandhi.mukul@xxxxxxxxx:
> I'm continuing on this topic.
>
> On Fri, Mar 8, 2019 at 4:39 PM Michael Kay mike@xxxxxxxxxxxx 
> <mailto:mike@xxxxxxxxxxxx> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx 
> <mailto:xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>> wrote:
>
>     we decided on a different approach: provide a function to convert
>     a very specific XML vocabulary to JSON, and then (because we
>     already have powerful XML-to-XML transformation capabilities), let
>     the user say how their particular XML should be transformed to
>     that vocabulary.
>
>
> Lets say, we've a following input XML document,
>
> <?xml version="1.0" encoding="UTF-8"?>
> <root>
> B  B <val>1</val>
> B  B <val>2</val>
> B  B <val>3</val>
> B  B <val>4</val>
> </root>
>
> I would want to transform above XML document to following JSON,
>
> {
> B  B  "root": {
> B  B  B  B  "val": [
> B  B  B  B  B  B  1,
> B  B  B  B  B  B  2,
> B  B  B  B  B  B  3,
> B  B  B  B  B  B  4
> B  B  B  B  ]
> B  B  }
> }
>
> How can I do this with XSLT 3.0 and XPath 3.1's fn:xml-to-json() 
> function ?
>

You need to transform your XML to the format the function expects, if 
the input format is known, i.e. you know you have various "val" elements 
with numbers you want to be transformed to array items then it is rather 
easy:


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

 B  <xsl:template match="/">
 B B B B  <xsl:variable name="json-xml">
 B B 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  </xsl:template>

</xsl:stylesheet>


https://xsltfiddle.liberty-development.net/ncdD7mc

Current Thread

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.