context.schema.json

{
  "meta:license": [
    "Copyright 2017 Adobe Systems Incorporated. All rights reserved.",
    "This work is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license",
    "you may not use this file except in compliance with the License. You may obtain a copy",
    "of the License at https://creativecommons.org/licenses/by/4.0/"
  ],
  "$schema": "http://json-schema.org/draft-06/schema#",
  "$id": "https://ns.adobe.com/xdm/external/activity-streams-2/context",
  "description": "A a set of rules for interpreting a JSON-LD document as specified in [the Context of the JSON-LD specification](https://json-ld.org/spec/latest/json-ld/#the-context).",
  "definitions": {
    "keywords": {
      "type": "string",
      "enum": [
        "@context",
        "@id",
        "@value",
        "@language",
        "@type",
        "@container",
        "@list",
        "@set",
        "@reverse",
        "@index",
        "@base",
        "@vocab",
        "@graph",
        ":"
      ]
    },
    "blank-node-identifier": {
      "type": "string",
      "pattern": "^_:.+$"
    },
    "term": {
      "type": "string",
      "pattern": "^[^:@].+$"
    },
    "expanded-term-definition": {
      "type": "object",
      "properties": {
        "@id": {
          "anyOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "$ref": "#/definitions/term"
            },
            {
              "$ref": "#/definitions/blank-node-identifier"
            },
            {
              "$ref": "#/definitions/keywords"
            },
            {
              "type": "null"
            }
          ]
        },
        "@reverse": {
          "anyOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "$ref": "#/definitions/term"
            },
            {
              "$ref": "#/definitions/blank-node-identifier"
            },
            {
              "$ref": "#/definitions/keywords"
            },
            {
              "type": "null"
            }
          ]
        },
        "@type": {
          "anyOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "$ref": "#/definitions/term"
            },
            {
              "type": "string",
              "enum": ["@id", "@vocab"]
            },
            {
              "type": "null"
            }
          ]
        },
        "@language": {
          "oneOf": [
            {
              "$ref": "https://ns.adobe.com/xdm/external/activity-streams-2/rdf-langstring#/definitions/tag"
            },
            {
              "type": "null"
            }
          ]
        },
        "@container": {
          "oneOf": [
            {
              "type": "null"
            },
            {
              "type": "string",
              "enum": ["@set", "@list", "@language", "@index"]
            }
          ]
        }
      },
      "additionalProperties": false
    },
    "single-context": {
      "type": "object",
      "properties": {
        "@vocab": {
          "anyOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "$ref": "#/definitions/blank-node-identifier"
            },
            {
              "$ref": "#/definitions/term"
            },
            {
              "type": "null"
            }
          ]
        },
        "@base": {
          "oneOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "type": "null"
            }
          ]
        },
        "@language": {
          "oneOf": [
            {
              "$ref": "https://ns.adobe.com/xdm/external/activity-streams-2/rdf-langstring#/definitions/tag"
            },
            {
              "type": "null"
            }
          ]
        }
      },
      "patternProperties": {
        "^([^:@_].*)|(_:.*)$": {
          "anyOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "$ref": "#/definitions/term"
            },
            {
              "$ref": "#/definitions/blank-node-identifier"
            },
            {
              "$ref": "#/definitions/keywords"
            },
            {
              "type": "null"
            },
            {
              "$ref": "#/definitions/expanded-term-definition"
            },
            {
              "properties": {
                "@context": {
                  "$ref": "#/definitions/single-or-array-of-contexts"
                }
              },
              "type": "object"
            }
          ]
        }
      },
      "additionalProperties": false
    },
    "single-context-or-uri": {
      "oneOf": [
        {
          "type": "string",
          "format": "uri"
        },
        {
          "$ref": "#/definitions/single-context"
        }
      ]
    },
    "single-or-array-of-contexts": {
      "oneOf": [
        {
          "$ref": "#/definitions/single-context-or-uri"
        },
        {
          "type": "array",
          "items": {
            "$ref": "#/definitions/single-context-or-uri"
          }
        }
      ]
    }
  },
  "properties": {
    "@context": {
      "$ref": "#/definitions/single-or-array-of-contexts"
    }
  },
  "type": "object",
  "title": "JSON-LD `@context`",
  "meta:status": "experimental"
}