Invalid json schema generated by spring-data-rest [DATAREST-984]

Dimitri KOPRIWA opened DATAREST-984 and commented

It appear the json schema generated when calling /api/profile/managers

This is the response json :

{
  "title": "Manager",
  "properties": {
    "new": {
      "title": "New",
      "readOnly": true,
      "type": "boolean"
    },
    "lastModifiedDate": {
      "title": "Last modified date",
      "readOnly": false,
      "type": "string",
      "format": "date-time",
      "$ref": "#/definitions/instant"
    },
    "credentialsNonExpired": {
      "title": "Credentials non expired",
      "readOnly": true,
      "type": "boolean"
    },
    "active": {
      "title": "Active",
      "readOnly": false,
      "type": "boolean"
    },
    "login": {
      "title": "Login",
      "readOnly": false,
      "type": "string"
    },
    "roleList": {
      "title": "Role list",
      "readOnly": false,
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "enabled": {
      "title": "Enabled",
      "readOnly": true,
      "type": "boolean"
    },
    "authorities": {
      "title": "Authorities",
      "readOnly": true,
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    "createdDate": {
      "title": "Created date",
      "readOnly": false,
      "type": "string",
      "format": "date-time",
      "$ref": "#/definitions/instant"
    },
    "lastModifiedById": {
      "title": "Last modified by id",
      "readOnly": false,
      "type": "integer"
    },
    "accountNonExpired": {
      "title": "Account non expired",
      "readOnly": true,
      "type": "boolean"
    },
    "createdById": {
      "title": "Created by id",
      "readOnly": false,
      "type": "integer"
    },
    "username": {
      "title": "Username",
      "readOnly": true,
      "type": "string"
    },
    "accountNonLocked": {
      "title": "Account non locked",
      "readOnly": true,
      "type": "boolean"
    }
  },
  "definitions": {
    "instant": {
      "type": "string",
      "properties": {
        "nano": {
          "title": "Nano",
          "readOnly": true,
          "type": "integer"
        },
        "epochSecond": {
          "title": "Epoch second",
          "readOnly": true,
          "type": "integer"
        }
      }
    }
  },
  "type": "object",
  "$schema": "http://json-schema.org/draft-04/schema#"
}

I can't get it validated in http://www.jsonschemavalidator.net/

Found 4 error(s)
  Message:Invalid type. Expected String but got Object.
  Schema path: #/definitions/instant/type

  Message: Invalid type. Expected String but got Null.
  Schema path: #/definitions/instant/type

  Message: Invalid type. Expected Integer but got Null.
  Schema path: #/properties/createdById/type

  Message: Invalid type. Expected Integer but got Null.
  Schema path: #/properties/lastModifiedById/type

I use a default spring installation with spring-data-rest.

For some reason, my Instant get serialized under a content sub key.

I asked the question here.

Anyone know what's happening ?

Affects: 2.5.6 (Hopper SR6)

Reference URL: https://github.com/mozilla-services/react-jsonschema-form/issues/447#issuecomment-274263459

Issue Links:

• DATAREST-985 Invalid json schema generated by spring-data-rest
  ("is duplicated by")