EU Open Data Portal Search API

openapi: 3.2.0
info:
  version: 5.3.11
  title: hub Search API
  description: Hub-Search is a powerful search solution designed to function as a Metadata Search Service for the Open Data Portal.
  x-logo:
    url: images/logo
servers:
- url: ''
tags:
- name: Search
paths:
  /search:
    get:
      description: To retrieve the data, send a GET request to the specified URL of the API endpoint with the resource path "/search" at the end of the URL. See the example here right. To obtain the desired result, use one or more of the parameters listed below. The parameters are pairs of names and their corresponding values, so-called name-value pairs. These are added to the URL with a "?" sign, the name and value are always separated using a '=' sign, the pairs are separated using a '&' sign. A syntactically correct request looks like the following example https://example.org/api/hub/search/search?q=cat&filters=dataset
      summary: Search
      operationId: searchGet
      tags:
      - Search
      parameters:
      - in: query
        name: q
        description: The query
        schema:
          type: string
      - in: query
        name: filter
        description: Filter queries by document type
        deprecated: true
        schema:
          type: string
      - in: query
        name: filters
        description: Filters queries by one or multiple document types
        schema:
          type: array
          items:
            type: string
            enum:
            - catalogue
            - dataset
            - dataservice
            - datasetseries
            - series
            - resource
            - vocabulary
            - organization
            - resource_editorial-content
          example:
          - catalogue
          - dataset
        explode: false
      - in: query
        name: facets
        description: Filter queries by facets (json as string, e.g. 'facets={"catalog":["catalog-x"]}')
        schema:
          type: string
      - in: query
        name: includeChildren
        description: Include datasets assigned to child organizations when filtering by the organization facet
        schema:
          type: boolean
          default: false
      - in: query
        name: page
        description: The page number of matching results
        schema:
          type: integer
          minimum: 0
          default: 0
      - in: query
        name: limit
        description: The maximum number of matching datasets per page
        schema:
          type: integer
          minimum: 0
          maximum: 1000
          default: 10
      - in: query
        name: fields
        description: Filter queries by document fields (e.g. 'fields=title')
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: minDate
        description: Filter queries by minimum Date
        schema:
          type: string
          format: date-time
      - in: query
        name: maxDate
        description: Filter queries by maximum Date
        schema:
          type: string
          format: date-time
      - in: query
        name: dateType
        description: To be used with `minDate` and `maxDate` query parameters. The default value is defined in the configuration.
        schema:
          type: string
          enum:
          - issued
          - modified
          - temporal
      - in: query
        name: boost
        description: Boost document fields (boost.field=1.0 or boost.field.subfield=1.0, e.g. boost.title=3.0)
        schema:
          type: object
      - in: query
        name: globalAggregation
        description: Counting of facets globally or locally (default true)
        schema:
          type: boolean
      - in: query
        name: facetOperator
        description: Filtering queries by facets are combined with "AND" or "OR" (default "OR")
        schema:
          type: string
          enum:
          - AND
          - OR
      - in: query
        name: facetGroupOperator
        description: Filtering queries by facetgroups are combined with "AND" or "OR" (default "AND")
        schema:
          type: string
          enum:
          - AND
          - OR
      - in: query
        name: bboxMinLon
        description: Filter queries by bounding box minimum longitude
        schema:
          type: number
          format: float
          minimum: -180
          maximum: 180
      - in: query
        name: bboxMaxLon
        description: Filter queries by bounding box maximum longitude
        schema:
          type: number
          format: float
          minimum: -180
          maximum: 180
      - in: query
        name: bboxMaxLat
        description: Filter queries by bounding box maximum latitude
        schema:
          type: number
          format: float
          minimum: -90
          maximum: 90
      - in: query
        name: bboxMinLat
        description: Filter queries by bounding box minimum latitude
        schema:
          type: number
          format: float
          minimum: -90
          maximum: 90
      - in: query
        name: sort
        description: Sorting of the search result (usage "field+asc" or "field+desc", default is desc)
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: filterDistributions
        description: If datasets are searched by facets distributions are returned filtered (default false)
        schema:
          type: boolean
      - in: query
        name: aggregation
        description: Enables aggregation of facets (default true)
        schema:
          type: boolean
      - in: query
        name: includes
        description: Descides which fields are included in the response (default all)
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: scroll
        description: Enable scroll and return a scroll id
        schema:
          type: boolean
          default: false
      - in: query
        name: searchAfter
        description: Enable searching page by page. Ideal for efficiently navigating through large result sets. Must be set to `true` to get the first page.
        schema:
          type: boolean
          default: false
      - in: query
        name: searchAfterSort
        description: Sort values from the last result. Required to retrieve the next page. Must be combined with `pitId`, otherwise it will be ignored.
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: pitId
        description: Point-in-Time ID from the previous response. Required to retrieve the next page. Must be combined with `searchAfterSort`, otherwise it will be ignored.
        schema:
          type: string
      - in: query
        name: minScoring
        description: Filter by minimum quality measurement scoring value
        schema:
          type: integer
      - in: query
        name: maxScoring
        description: Filter by maximum quality measurement scoring value
        schema:
          type: integer
      - in: query
        name: aggregationAllFields
        description: Aggregate all facets
        schema:
          type: boolean
          default: true
      - in: query
        name: aggregationFields
        description: Aggregate selected facets (ignored if aggregationAllFields is set true)
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: countryData
        description: If enabled only datasets from country catalogues are returned. If disabled only datasets from non-country catalogues are returned. If not specified (null), no filtering is performed.
        schema:
          type: boolean
      - in: query
        name: showScore
        description: If enabled the score is returned for each result. Disabled as default.
        schema:
          type: boolean
      - in: query
        name: vocabulary
        description: Filter by vocabulary id. Only effective when `filters` contains `vocabulary`. For example, `filters=dataset,vocabulary` or `filters=vocabulary`.
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: resource
        description: Filter by resource types. Only effective when `filters` contains `resource`, for example, `filters=catalogue,resource` or `filters=resource`.
        schema:
          type: array
          items:
            type: string
        explode: false
      - in: query
        name: dataServices
        description: Only show datasets which have a distribution with at least one access service (true). Default show all (false).
        schema:
          type: boolean
      - in: query
        name: autocomplete
        description: Search with autocomplete style via title field. Default false.
        schema:
          type: boolean
      - in: query
        name: superCatalogue
        description: Deprecated. Please use "superCatalog" in the "facets" for filtering datasets or catalogues search result.
        deprecated: true
        schema:
          type: string
      - in: query
        name: countOnly
        description: When set to true, the search result contains only the count of the search result.
        schema:
          type: boolean
          default: false
      - in: query
        name: accessControlPermissions
        description: Filter by access control permissions. Specify the access control permissions (view, edit, publish, delete) required for resources to be returned. If multiple permissions are specified, the resources must have at least one of the specified permissions.
        schema:
          type: array
          items:
            type: string
            enum:
            - view
            - edit
            - publish
            - delete
        explode: false
      responses:
        '200':
          $ref: '#/components/responses/QuerySuccess'
        '400':
          $ref: '#/components/responses/BadRequest'
        '500':
          $ref: '#/components/responses/InternalServerError'
    post:
      description: To retrieve the data, send a POST request to the specified URL of the API endpoint with the resource path "/search" at the end of the URL. See the example here right. To obtain the desired result, use one or more of the parameters listed below. The parameters are pairs of names and their corresponding values, so-called name-value pairs. The request sent to the server with POST is stored in the request body according to Request Body Schema below. See the syntax of the request here on the right.
      summary: Search
      operationId: searchPost
      tags:
      - Search
      requestBody:
        description: Query
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Query'
      responses:
        '200':
          $ref: '#/components/responses/QuerySuccess'
        '400':
          $ref: '#/components/responses/BadRequest'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /scroll:
    get:
      description: Make a GET request to the specified URL of the API endpoint with the resource path "/scroll" at the end of the URL if you want to retrieve large number of results (or even all results) from a single search request. First you have to obtain the required parameter ScrollID (do so using method GET to the specified URL of the API endpoint with the resource path "search" at the end of the URL). Use SCROLL the same way you use cursor on a traditional database.
      summary: Scroll
      operationId: scrollGet
      tags:
      - Search
      parameters:
      - in: query
        name: scrollId
        description: The scroll id
        required: true
        schema:
          type: string
      responses:
        '200':
          $ref: '#/components/responses/QuerySuccess'
        '400':
          $ref: '#/components/responses/BadRequest'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  schemas:
    Query:
      description: Query
      type: object
      properties:
        q:
          type: string
          description: The query
        filter:
          type: string
          description: Filter queries by document type
          deprecated: true
        filters:
          type: array
          description: Filters queries by one or multiple document types
          items:
            type: string
            enum:
            - catalogue
            - dataset
            - dataservice
            - resource
            - vocabulary
            - resource_editorial-content
        facets:
          type: object
          description: Filter queries by facets (string as json, e.g. 'facets={"catalog":["catalog-x"]}')
          additionalProperties:
            type: array
            items:
              type: string
        includeChildren:
          type: boolean
          default: false
          description: Include datasets assigned to child organizations when filtering by the organization facet
        page:
          type: integer
          minimum: 0
          description: The page number of matching results
        limit:
          type: integer
          description: The maximum number of matching datasets per page
          minimum: 0
          maximum: 1000
        fields:
          type: array
          description: Filter queries by document fields (e.g. 'fields=title')
          items:
            type: string
        searchParams:
          type: object
          properties:
            minDate:
              type: string
              description: Filter queries by minimum Date
              format: date-time
            maxDate:
              type: string
              description: Filter queries by maximum Date
              format: date-time
            boundingBox:
              $ref: '#/components/schemas/BoundingBox'
            scoring:
              type: object
              properties:
                min:
                  type: integer
                max:
                  type: integer
        boost:
          type: object
          description: Boost document fields
          additionalProperties:
            type: number
            description: Use field or field.subfield
            format: float
        globalAggregation:
          type: boolean
          description: Counting of facets globally or locally (default true)
        facetOperator:
          type: string
          description: Filtering queries by facets are combined with "AND" or "OR" (default "OR")
          enum:
          - AND
          - OR
        facetGroupOperator:
          type: string
          description: Filtering queries by facetgroups are combined with "AND" or "OR" (default "AND")
          enum:
          - AND
          - OR
        sort:
          type: array
          description: Sorting of the search result (usage "field+asc" or "field+desc", default is desc)
          items:
            type: string
        filterDistributions:
          type: boolean
          description: If datasets are searched by facets distributions are returned filtered (default false)
        aggregation:
          type: boolean
          description: Enables aggregation of facets (default true)
        includes:
          type: array
          description: Descides which fields are included in the response (default all)
          items:
            type: string
        scroll:
          type: boolean
          description: Enables scroll and returns a scroll id (default true)
        searchAfter:
          type: boolean
          description: Enable searching page by page. Ideal for efficiently navigating through large result sets. Must be set to `true` to get the first page.
          default: false
        searchAfterSort:
          type: array
          description: Sort values from the last result. Required to retrieve the next page. Must be combined with `pitId`, otherwise it will be ignored.
          items:
            type: string
        pitId:
          type: string
          description: Point-in-Time ID from the previous response. Required to retrieve the next page. Must be combined with `searchAfterSort`, otherwise it will be ignored.
        minScoring:
          type: integer
          description: Filter by minimum quality measurement scoring value
        maxScoring:
          type: integer
          description: Filter by maximum quality measurement scoring value
        aggregationAllFields:
          type: boolean
          description: Aggregate all facets (default true)
        aggregationFields:
          type: array
          description: Aggregate selected facets (ignored if aggregationAllFields is set true)
          items:
            type: string
        countryData:
          type: boolean
          description: If enabled only datasets from country catalogues are returned. If disabled only datasets from non-country catalogues are returned. If not specified (null), no filtering is performed.
        vocabulary:
          type: array
          description: Filter by vocabulary id. Only effective when `filters` contains `vocabulary`. For example, `filters=dataset,vocabulary` or `filters=vocabulary`.
          items:
            type: string
        resource:
          type: array
          description: Filter by resource types. Only effective when `filters` contains `resource`. For example, `filters=catalogue,resource` or `filters=resource`.
          items:
            type: string
        accessControlPermissions:
          type: array
          description: Filter by access control permissions. Specify the access control permissions (view, edit, publish, delete) required for resources to be returned. If multiple permissions are specified, the resources must have at least one of the specified permissions.
          items:
            type: string
            enum:
            - view
            - edit
            - publish
            - delete
    BoundingBox:
      type: object
      description: Filter queries by bounding box
      properties:
        minLon:
          type: number
          description: Minimum longitude
          format: float
          minimum: -180
          maximum: 180
        maxLon:
          type: number
          description: Maximum longitude
          format: float
          minimum: -180
          maximum: 180
        maxLat:
          type: number
          description: Maximum latitude
          format: float
          minimum: -90
          maximum: 90
        minLat:
          type: number
          description: Minimum latitude
          format: float
          minimum: -90
          maximum: 90
  responses:
    BadRequest:
      description: Validation error / Bad request
      content:
        application/json:
          schema:
            type: object
            properties:
              success:
                type: boolean
                default: false
              message:
                type: string
    InternalServerError:
      description: Internal Server Error
      content:
        application/json:
          schema:
            type: object
            properties:
              success:
                type: boolean
                default: false
              message:
                type: string
    QuerySuccess:
      description: The query was successfully processed
      content:
        application/json:
          schema:
            type: object
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
x-tagGroups:
- name: Resources
  tags:
  - Resources
  - EditorialContent
- name: Searching
  tags:
  - Search
  - Feeds
- name: DCAT-AP
  tags:
  - Datasets
  - Data Services
  - Dataset Series
  - Catalogues
  - Vocabularies
- name: Misc
  tags:
  - Gazetteer
  - Ckan
  - Organizations