Help needed with a recursive schema

[PhilDay-CT]

Hi Folks, I’m hoping someone can tell me what I’m doing wrong here.

I want define a schema that will allow nested objects where each level either contains the key ‘status’ or an nested object of the same type. So any of the following should be valid

{a: {status: "OK"}}
{b: {a: {status: "OK"}}}
{c: {b: {a: {status: "OK"}}}}
{d: {c: {b: {a: {status: "OK"}}}}}

but the following should be invalid

{a: {status: "OK", extra: 6}}
{b: {a: {status: "OK", extra: 6}}}
{c: {b: {a: {status: "OK", extra: 6}}}}
{d: {c: {b: {a: {status: "OK", extra: 6}}}}}

{a: {status: 666}}
{b: {a: {status: 666}}}
{c: {b: {a: {status: 666}}}}
{d: {c: {b: {a: {status: 666}}}}}

The schema I have is:

{
    type: 'object',
    additionalProperties :{
        patternProperties: {
            status: {type: 'string'},
            '^(?!(status)$).*$': {"$ref": "#" }   
        },
    }
}

which is meant to be:

• The element ‘status’ must be a string
• Any element that isn’t ‘status’ must be an object with this set of rules

But this schema only seems to pick up the errors at even numbers of nesting, so the following all fail as expected

{a: {status: "OK", extra: 6}}
{c: {b: {a: {status: "OK", extra: 6}}}}
{a: {status: 666}}
{c: {b: {a: {status: 666}}}}

but the following pass

{b: {a: {status: "OK", extra: 6}}}
{d: {c: {b: {a: {status: "OK", extra: 6}}}}}

{b: {a: {status: 666}}}
{d: {c: {b: {a: {status: 666}}}}}

[jdesrosiers]

The problem is the additionalProperties wrapper. You want,

{
  "type": "object",
  "patternProperties": {
    "status": { "type": "string" },
    "^(?!(status)$).*$": { "$ref": "#" }
  }
}

[PhilDay-CT]

Ah - Thanks Jason - don't know why I didn't spot that, I guess I got distracted by the finding out that additonalProperities could also be schema