Subject: [xsl] json to json transformation From: "Mukul Gandhi gandhi.mukul@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Fri, 15 Mar 2019 10:41:52 -0000 |
Hi all, XPath 3.1 has functions json-to-xml() and xml-to-json(). I thought of using these two functions in a XSLT 3.0 stylesheet, to do json to json transformations. Below is an example of this, Input JSON file person.txt: { "id" : 105, "medals" : [1, 2, 3], "fName" : "Mukul", "lName" : "Gandhi", "address" : { "street1" : "xyz", "street2" : "maddison avenue", "country" : "C1" } } I wish to transform above JSON document, into another JSON document which should look like following, { "id" : 105, "medals" : [1, 2, 3], "name" : "Mukul Gandhi", "address" : { "street1" : "xyz", "street2" : "maddison avenue", "country" : "C1" } } Everything in second JSON document is same as the first one, except that "fName" and "lName" fields have been merged into one "name" field. Following is a XSLT stylesheet I've written for the mentioned requirements, <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" exclude-result-prefixes="xs fn" version="3.0"> <xsl:variable name="inpJson" select="unparsed-text('person.txt')" as="xs:string"/> <xsl:output method="text" /> <xsl:template match="/"> <xsl:variable name="inpXml" select="json-to-xml($inpJson)"/> <xsl:variable name="intermediate"> <xsl:apply-templates select="$inpXml/fn:map" mode="M0"/> </xsl:variable> <xsl:copy-of select="xml-to-json($intermediate, map{'indent': true()})"/> </xsl:template> <xsl:template match="node() | @*" mode="M0"> <xsl:copy> <xsl:apply-templates select="node() | @*" mode="M0"/> </xsl:copy> </xsl:template> <xsl:template match="fn:string[@key = 'fName']" mode="M0"> <fn:string key="name"><xsl:value-of select="concat(., ' ', following-sibling::fn:string[1])"/></fn:string> </xsl:template> <xsl:template match="fn:string[@key = 'lName']" mode="M0"/> </xsl:stylesheet> The above mentioned stylesheet, produces the wanted results. Just thought of sharing these facts with members here, for any comments, suggestions. -- Regards, Mukul Gandhi
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