Map file in the Integration for the LogicApp in Azure - json

Question

Have the following XML as a result of the HTTP GET function from the B2B supplier.
<Invoices xmlns="http://gateway.com/schemas/Invoices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gateway..com/schemas/Invoices Invoices.xsd">
<DocumentInfo>
<DocType>INVOICES</DocType>
<DocVersion>2.0</DocVersion>
</DocumentInfo>
<Header>
<StartDate>2018-12-01T00:00:00+01:00</StartDate>
<EndDate>2019-01-03T00:00:00+01:00</EndDate>
</Header>
<Documents>
<Invoice InvoiceId="RP82807" InvoiceDate="2019-01-02T00:00:00+01:00" DocumentType="IN" RefDocId="FT34532" RefDocType="ORDER" SystemId="10" HasPDFImage="0" />
<Invoice InvoiceId="T609881" InvoiceDate="2018-12-31T00:00:00+01:00" DocumentType="IN" RefDocId="FT39339" RefDocType="ORDER" SystemId="0" HasPDFImage="0" />
</Documents>
</Invoices>
Based on this article I've created the liquid map file to get the list of InvoiceIds:
{
"Invoice": "{{content.Documents.Invoice}}"
}
When using it in the LogicApp in the XML->Json converter, got the following result:
{
"Invoice": ""
}
I have also tried this as a liquid file:
{
"Invoice": "{{content.Invoices.Documents}}"
}
and this:
{
"Invoice": "{{content.Invoices.Documents.Invoice}}"
}
with the same result.
Can you give me a tip what I do wrong?

Answer 1

I tried to transfer part of your xml file to json with this map:
{
"DocType":"{{content.DocumentInfo.DocType}}",
"Invoice":"{{content.Documents.Invoice}}"
}
And get the output:
{
"DocType": "INVOICES",
"Invoice": ""
}
So this means I can get the DocType but can't get Invoice properties, so I think maybe the Liquid map doesn't support the XML format. Maybe you could change it to like this:
<Invoice>
<InvoiceId>T609881</InvoiceId>
<InvoiceDate>2018-12-31T00:00:00+01:00</InvoiceDate>
<DocumentType>IN</DocumentType>
<RefDocId>FT39339</RefDocId>
</Invoice>
This will work, or you could go to Liquid reference to check is there any methods to match the properties.
Note:what you want for now,binding to Xml Attributes is not currently supported.You could refer to this answer.
If you still have other questions, please let me know.
UPDATE:You still could do it with logic app. For example I used a FTP connector to get xml file content then create a json with "json(xml(body('Get_file_content')))" expression.
And this is the result.