| { |
| "$schema": "http://json-schema.org/draft-04/schema#", |
| "title": "crs", |
| "description": "a Coordinate Reference System object", |
| "type": [ "object", "null" ], |
| "required": [ "type", "properties" ], |
| "properties": { |
| "type": { "type": "string" }, |
| "properties": { "type": "object" } |
| }, |
| "additionalProperties": false, |
| "oneOf": [ |
| { "$ref": "#/definitions/namedCrs" }, |
| { "$ref": "#/definitions/linkedCrs" } |
| ], |
| "definitions": { |
| "namedCrs": { |
| "properties": { |
| "type": { "enum": [ "name" ] }, |
| "properties": { |
| "required": [ "name" ], |
| "additionalProperties": false, |
| "properties": { |
| "name": { |
| "type": "string", |
| "FIXME": "semantic validation necessary" |
| } |
| } |
| } |
| } |
| }, |
| "linkObject": { |
| "type": "object", |
| "required": [ "href" ], |
| "properties": { |
| "href": { |
| "type": "string", |
| "format": "uri", |
| "FIXME": "spec says \"dereferenceable\", cannot enforce that" |
| }, |
| "type": { |
| "type": "string", |
| "description": "Suggested values: proj4, ogjwkt, esriwkt" |
| } |
| } |
| }, |
| "linkedCRS": { |
| "properties": { |
| "type": { "enum": [ "link" ] }, |
| "properties": { "$ref": "#/definitions/linkedObject" } |
| } |
| } |
| } |
| } |