$ref to relative path does not work with "./file.json"

[mehdijouan]

Hello,

I would like to get your point on an issue I face when validating two schemas with a reference, from one to the other.

I have two schemes

• An address.json
• A card.json that refers to the address.json

When trying to validate the schemes, I get the following error:

   [ {
     "level" : "error",
     "message" : "URI \"./address.json\" is not normalized",
     "domain" : "syntax",
     "schema" : {
       "loadingURI" : "#",
       "pointer" : "/properties/addresses/items"
     },
     "keyword" : "$ref",
     "value" : "./address.json"
   } ]

From my understanding of the json schema spec, a relative path should be accepted.
What do you think about it?

The address.json is as following:

{
   "$schema": "http://json-schema.org/draft-06/schema#",
   "description": "An address",
   "type": "object",
   "properties": {
      "post-office-box": {
         "type": "string"
      },
      "extended-address": {
         "type": "string"
      },
      "street-address": {
         "type": "string"
      },
      "locality": {
         "type": "string"
      },
      "region": {
         "type": "string"
      },
      "postal-code": {
         "type": "string"
      },
      "country-name": {
         "type": "string"
      }
   },
   "required": [
      "locality",
      "region",
      "country-name"
   ],
   "dependencies": {
      "post-office-box": [
         "street-address"
      ],
      "extended-address": [
         "street-address"
      ]
   }
}

The card.json file is as following:

{
   "$schema": "http://json-schema.org/draft-06/schema#",
   "description": "A representation of a person, company, organization, or place",
   "type": "object",
   "required": [
      "familyName",
      "givenName"
   ],
   "properties": {
      "familyName": {
         "type": "string"
      },
      "givenName": {
         "type": "string"
      },
      "nickname": {
         "type": "string"
      },
      "addresses": {
         "type": "array",
         "items": {
            "$ref": "./address.json"
         }
      }
   }
}

[trein]

I'm facing similar issue.

[russgold]

I'm running into the same issue, and have a thought. How does the validator know the file location of the top-level schema?

That is, I am loading my schema with the following code:

JsonNode schema = new JsonNodeReader()
.fromInputStream(getClass().getResourceAsStream("/schema/domain.json"));

I assume that you guys are doing something similar? But if the Json node reader is just reading from an InputStream or Reader, the location of the original file is lost - so how could relative urls possibly work?

That suggests that, in order to make this work, the node reader must take a file path - or else some pre-processing is needed in order to merge the nested schemas.