How to convert json to xml using xslt

Question

How would you convert JSON to XML?

Consider:

<sampleTag>
{
  "Order": {
    "InvestmentAccount": { "AccountNumber": "10" },
    "Parcel": {      
      "Limit": "0",
      "ExpiryDate": "1900-01-01T00:00:00",
      "Asset": [
    {        
        "Open": "25.15",
        "High": "25.15",
        "Low": "25.11",
        "Close": "25.87"
      }
    {        
        "Open": "25.15",
        "High": "25.15",
        "Low": "25.11",
        "Close": "25.87"
      }]
    },

    "OrderDate": "2012-10-11T21:46:03.6489906+11:00",

  }
}
</sampleTag>

After transformation, the document is as follows:

<Order>
    <InvestmentAccount>
        <AccountNumber>10</AccountNumber>
    </InvestmentAccount>
    <Parcel>
        <Limit>0</Limit>
        <ExpiryDate>1900-01-01T00:00:00</ExpiryDate>
        <Asset>
            <Open>25.15</Open>
            <High>25.15</High>
            <Low>25.11</Low>
            <Close>25.87</Close>
        </Asset>
        <Asset>
            <Open>25.15</Open>
            <High>25.15</High>
            <Low>25.11</Low>
            <Close>25.87</Close>
        </Asset>
    </Parcel>
    <OrderDate>2012-10-11T21:46:03.6489906+11:00</OrderDate>
</Order>

Answer 1

My work on JSON parsing doesn't cover the full JSON grammar.

And the task of "translating" any JSON document to an XML document doesn't have a solution. There are JSON constructs, which cannot be translated to XML without defining additional conventions and introducing additional elements -- so the final XML structure isn't a true and natural representation of the original JSON object.

In XSLT 3.0 there is a function to parse any JSON object -- parse-json() -- to a map -- a new data type introduced in XSLT 3.0. Read about this here: http://www.w3.org/TR/xslt-30/#json