tm-extend.json

{
    "title": "tm-extend",
    "description": "A Thing Model MUST use at least one links entry with \"rel\":\"tm:extends\" that targets to a Thing Model that is be extended.",
    "$schema ": "http://json-schema.org/draft/2019-09/schema#",
    "is-complex": true,
    "type": "object",
    "properties": {
        "links": {
            "type": "array",
            "items": {
                "if": {
                    "$ref": "#/definitions/tm_extend_link_element"
                },
                "else": {
                    "$ref": "#/definitions/base_link_element"
                },
                "then": {
                    "const": "tm-extend=pass"
                }
            }
        }
    },
    "additionalProperties": true,
    "definitions": {
        "anyUri": {
            "type": "string"
        },
        "base_link_element": {
            "type": "object",
            "properties": {
                "href": {
                    "$ref": "#/definitions/anyUri"
                },
                "type": {
                    "type": "string"
                },
                "rel": {
                    "type": "string"
                },
                "anchor": {
                    "$ref": "#/definitions/anyUri"
                }
            },
            "required": ["href"],
            "additionalProperties": true
        },
        "tm_extend_link_element": {
            "allOf": [
                {
                    "$ref": "#/definitions/base_link_element"
                },
                {
                    "properties": {
                        "rel": {
                            "const": "tm:extends"
                        }
                    },
                    "required": ["rel"]
                }
            ]
        }
    }
}