td-context.json

{
    "title": "td-context",
    "description": "The root element of a TD Serialization MUST be a JSON object that includes a member with the name @context and a value of type string or array that equals or respectively contains https://www.w3.org/2022/wot/td/v1.1. ",
    "is-complex": true,
    "$schema": "http://json-schema.org/draft-07/schema#",
    "also": ["td-vocab-at-context--Thing"],
    "type": "object",
    "if": {
        "required": ["@context"],
        "properties": {
            "@context": {
                "$ref": "#/definitions/thing-context"
            }
        }
    },
    "then": {
        "const": "td-context=pass"
    },
    "additionalProperties": true,
    "definitions": {
        "thing-context-td-uri-v1": {
            "type": "string",
            "const": "https://www.w3.org/2019/wot/td/v1"
        },
        "thing-context-td-uri-v1.1": {
            "type": "string",
            "const": "https://www.w3.org/2022/wot/td/v1.1"
        },
        "thing-context-td-uri-temp": {
            "type": "string",
            "const": "http://www.w3.org/ns/td"
        },
        "thing-context": {
            "anyOf": [
                {
                    "$comment": "New context URI with other vocabularies after it but not the old one",
                    "type": "array",
                    "items": [
                        {
                            "$ref": "#/definitions/thing-context-td-uri-v1.1"
                        }
                    ],
                    "additionalItems": {
                        "anyOf": [
                            {
                                "$ref": "#/definitions/anyUri"
                            },
                            {
                                "type": "object"
                            }
                        ],
                        "not": {
                            "$ref": "#/definitions/thing-context-td-uri-v1"
                        }
                    }
                },
                {
                    "$comment": "Only the new context URI",
                    "$ref": "#/definitions/thing-context-td-uri-v1.1"
                },
                {
                    "$comment": "Old context URI, followed by the new one and possibly other vocabularies. minItems and contains are required since prefixItems does not say all items should be provided",
                    "type": "array",
                    "prefixItems": [
                        {
                            "$ref": "#/definitions/thing-context-td-uri-v1"
                        },
                        {
                            "$ref": "#/definitions/thing-context-td-uri-v1.1"
                        }
                    ],
                    "minItems": 2,
                    "contains": {
                        "$ref": "#/definitions/thing-context-td-uri-v1.1"
                    },
                    "additionalItems": {
                        "anyOf": [
                            {
                                "$ref": "#/definitions/anyUri"
                            },
                            {
                                "type": "object"
                            }
                        ]
                    }
                },
                {
                    "$comment": "Old context URI, followed by possibly other vocabularies. minItems and contains are required since prefixItems does not say all items should be provided",
                    "type": "array",
                    "prefixItems": [
                        {
                            "$ref": "#/definitions/thing-context-td-uri-v1"
                        }
                    ],
                    "minItems": 1,
                    "contains": {
                        "$ref": "#/definitions/thing-context-td-uri-v1"
                    },
                    "additionalItems": {
                        "anyOf": [
                            {
                                "$ref": "#/definitions/anyUri"
                            },
                            {
                                "type": "object"
                            }
                        ]
                    }
                },
                {
                    "$comment": "Only the new context URI",
                    "$ref": "#/definitions/thing-context-td-uri-v1"
                }
            ]
        },
        "anyUri": {
            "type": "string"
        }
    }
}