[SOLVED] JSON Schema - how to get the same result from different data types

JSON Schema - how to get the same result from different data types

I have stumbled here upon several answers regarding handling multiple types of data in JSON, but none of them helps me in my concrete case. I am a beginner in JSON, so any help is highly appreciated.

Namely, I can get the same data from HTTP request as an object in these two variations:

First case:

"cac:PayeeFinancialAccount": {
    "cbc:ID": {
        "@schemeID": "IBAN",
        "#text": "220-115524-04"
    }

Second case:

    "cac:PayeeFinancialAccount": {
    "cbc:ID": "220-115524-04"
    }

Is there a way to get the same form of result from parsing this JSON in any of those cases, a plain string I can grab later in my app, just "220-115524-04" that I can call via like ['cac:PayeeFinancialAccount']?['cbc:ID'] (ignoring other properties)?

Thanks everybody in advance.

I have tried employing "oneOf" from some other answers here, with some success, but couldn't manage to get the same output for both cases.

Solution

without seeing your JSON Schema, it's hard to determine what you have tried or how the schema was written.

This should work to validate both of your instances.

oneOf constrains cbc:ID to either an object with the properties defined or a string.

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "cac:PayeeFinancialAccount": {
      "type": "object",
      "properties": {
        "cbc:ID": {
          "oneOf": [
            {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                "@schemeID": {
                  "type": "string"
                },
                "#text": {
                  "type": "string"
                }
              }
            },
            {
              "type": "string"
            }
          ]
        }
      }
    }
  }
}