任意のキーを取る辞書のJSON Schema記法の覚書

JSON Schema

任意のキーと、文字列か数値を値とする辞書型をvalidationするためのJSON schema記法例。

JSON-schema

{
    "type": "object",
    "additionalProperties": {
        "anyOf": [
            {"type": "string"},
            {"type": "number"},
        ],
    },
}

Example@python

前述のスキーマをPython上でjsonschemaモジュールを使用して実行した例。

import jsonschema

schema = {
    "type": "object",
    "additionalProperties": {
        "anyOf": [
            {"type": "string"},
            {"type": "number"},
        ],
    },
}

valid_obj = {
    "key_a" : "value",
    "key_b" : 1,
    "key_c" : 1.1,
}
invalid_obj = {
    "key_a" : "value",
    "key_b" : 1,
    "key_c" : None,
}

jsonschema.validate(valid_obj, schema)

try:
    jsonschema.validate(invalid_obj, schema)
except jsonschema.ValidationError as e:
    print(e)

None is not valid under any of the given schemas

Failed validating 'anyOf' in schema['additionalProperties']:
    {'anyOf': [{'type': 'string'}, {'type': 'number'}]}

On instance['key_c']:
    None

参考

Dictionary-like JSON schema - Stack Overflow
http://stackoverflow.com/questions/27357861/dictionary-like-json-schema

python - JSON schema validation with arbitrary keys - Stack Overflow
http://stackoverflow.com/questions/16081118/json-schema-validation-with-arbitrary-keys