How to use dependentRequired with relative reference in JSON schema

Question

I have below JSON schema in my app, and i am using NewtonSoft JSON schema validation library to validate user JSON against my schema.

The rules that i need to set are -

1. if user sets property2 in the JSON then property3 should also exist and subProperty2 should also exist underneath property3 .
2. if user does not set property2 then property3 is not required.

I used dependentRequired for this with relative reference using period(.) but that did not work with NewtonSoft package. I tried in 2 different ways, both without expected result.

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "property1": {
      ...
    },
    "property2": {
      ...
    },
    "property3": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "subProperty1": {
          ...
        },
        "subProperty2": {
          ...
        },
      }
    }
  },
   "required": [
    "property1"
  ]
}

//try 1

  "dependentRequired": {
    "property2": [ "property3.subProperty2" ]
  },

//try 2

  "dependentRequired": {
    "property2": {
      "required": [ "property3" ],
      "property3": {
        "required": [ "subProperty2" ]
      }
    }
  } 

Can someone help me with this?

Answer 1

The dot notation used in the first try is not supported in JSON Schema.

The second try is the right idea, but since you are using a schema, you need to use dependentSchemas instead of dependentRequired . Also, you are missing the properties keyword to make that a valid schema.

  "dependentSchemas": {
    "property2": {
      "required": [ "property3" ],
      "properties": {
        "property3": {
          "required": [ "subProperty2" ]
        }
      }
    }
  },