$schema: https://json-schema.org/draft/2020-12/schema
title: STAC Collection Specification
description: This object represents Collections in a SpatioTemporal Asset Catalog
  (adapted from official specs)
allOf:
- $ref: '#/definitions/collection'
- $ref: https://raw.githubusercontent.com/radiantearth/stac-spec/master/item-spec/json-schema/common.json
- $ref: https://ogcincubator.github.io/bblocks-stac/build/annotated/contrib/stac/components/assets/schema.yaml
definitions:
  collection:
    title: STAC Collection
    description: These are the fields specific to a STAC Collection.
    type: object
    $comment: title, description, keywords, providers and license is validated through
      the common metadata.
    required:
    - type
    - id
    - description
    - license
    - extent
    - links
    properties:
      stac_extensions:
        title: STAC extensions
        type: array
        uniqueItems: true
        items:
          title: Reference to a JSON Schema
          type: string
          format: iri
        x-jsonld-id: https://w3id.org/ogc/stac/core/hasExtension
      type:
        title: Type of STAC entity
        const: Collection
        x-jsonld-id: '@type'
      id:
        title: Identifier
        type: string
        minLength: 1
        x-jsonld-id: '@id'
      extent:
        title: Extents
        type: object
        required:
        - spatial
        - temporal
        properties:
          spatial:
            title: Spatial extent object
            type: object
            required:
            - bbox
            properties:
              bbox:
                title: Spatial extents
                type: array
                oneOf:
                - minItems: 1
                  maxItems: 1
                - minItems: 3
                items:
                  title: Spatial extent
                  type: array
                  oneOf:
                  - minItems: 4
                    maxItems: 4
                  - minItems: 6
                    maxItems: 6
                  items:
                    type: number
          temporal:
            title: Temporal extent object
            type: object
            required:
            - interval
            properties:
              interval:
                title: Temporal extents
                type: array
                minItems: 1
                items:
                  title: Temporal extent
                  type: array
                  minItems: 2
                  maxItems: 2
                  items:
                    type:
                    - string
                    - 'null'
                    format: date-time
                    pattern: (\+00:00|Z)$
        x-jsonld-id: http://purl.org/dc/terms/extent
      item_assets:
        additionalProperties:
          allOf:
          - type: object
            minProperties: 2
            properties:
              href:
                title: Disallow href
                not: {}
              title:
                title: Asset title
                type: string
                x-jsonld-id: http://purl.org/dc/terms/title
              description:
                title: Asset description
                type: string
                x-jsonld-id: http://purl.org/dc/terms/description
              type:
                title: Asset type
                type: string
                x-jsonld-id: '@type'
              roles:
                title: Asset roles
                type: array
                items:
                  type: string
          - $ref: https://raw.githubusercontent.com/radiantearth/stac-spec/master/item-spec/json-schema/common.json
      links:
        type: array
        items:
          $ref: https://opengeospatial.github.io/bblocks/annotated-schemas/ogc-utils/json-link/schema.yaml
        x-jsonld-id: http://www.w3.org/2000/01/rdf-schema#seeAlso
      summaries:
        $ref: '#/definitions/summaries'
  summaries:
    type: object
    additionalProperties:
      anyOf:
      - title: JSON Schema
        type: object
        minProperties: 1
        allOf:
        - $ref: http://json-schema.org/draft-07/schema
      - title: Range
        type: object
        required:
        - minimum
        - maximum
        properties:
          minimum:
            title: Minimum value
            type:
            - number
            - string
          maximum:
            title: Maximum value
            type:
            - number
            - string
      - title: Set of values
        type: array
        minItems: 1
        items:
          description: For each field only the original data type of the property
            can occur (except for arrays), but we can't validate that in JSON Schema
            yet. See the sumamry description in the STAC specification for details.
x-jsonld-extra-terms:
  stac_version: https://w3id.org/ogc/stac/core/version
  keywords: http://purl.org/dc/terms/subject
  license: http://purl.org/dc/terms/license
  datetime:
    x-jsonld-id: http://purl.org/dc/terms/date
    x-jsonld-type: xsd:dateTime
  start_datetime:
    x-jsonld-id: https://w3id.org/ogc/stac/core/start_datetime
    x-jsonld-type: xsd:dateTime
  end_datetime:
    x-jsonld-id: https://w3id.org/ogc/stac/core/end_datetime
    x-jsonld-type: xsd:dateTime
  providers: https://w3id.org/ogc/stac/core/hasProvider
  media_type: http://purl.org/dc/terms/format
x-jsonld-prefixes:
  stac: https://w3id.org/ogc/stac/core/
  dct: http://purl.org/dc/terms/
  rdfs: http://www.w3.org/2000/01/rdf-schema#