Json schema ref other file - json

Question

With this schema:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"b": {
"type": "object",
"properties": {
"c": {
"type": "string"
}
}
},
"type": "object",
"properties": {
"a": {
"$ref": "#/b"
}
}
}
I can validate this example:
{
"a": {
"c": "test"
}
}
Now I want to create a new schema file for the "b" element and refer it in my 1st schema. How can I do this ? I try a lot of things but I always obtain jsonspec.reference.exceptions.NotFound: u'b.json' not registered.

Answer 1

After a couple of hours of googling and various doc readings, I've finally managed to be able to compose two json-schema's using "$ref" : "file:...".
My example data looks like this:
john-doe.json:
{
"first_name": "john",
"last_name": "doe",
"age": 42,
"address": {
"street_address": "foo street 42",
"city": "baklavastan",
"state": "foobar"
"foo": 42
}
}
And then I have two json schema files, which lives in the same directory on my file system.
customer.json
{
"type": "object",
"properties": {
"first_name": { "type": "string" },
"last_name": { "type": "string" },
"age" : { "type" : "integer" },
"address" : { "$ref" : "file:address.json#" }
},
"required": ["first_name", "last_name", "age", "address"],
"additionalProperties": false
}
address.json
{
"type": "object",
"properties": {
"street_address": { "type": "string" },
"city": { "type": "string" },
"state": { "type": "string" }
},
"required": ["street_address", "city", "state"],
"additionalProperties": false
}
I am able to validate against the schema in Clojure using the library scjsv (which is a wrapper around the Java json-schema-validation library)
It gives me following validation error (in clojure edn) for the john-doe.json example:
{ :level "error",
:schema {:loadingURI "file:address.json#", :pointer ""},
:instance {:pointer "/address"},
:domain "validation",
:keyword "additionalProperties",
:message
"object instance has properties which are not allowed by the schema: [\"foo\"]",
:unwanted ["foo"] }