layer:
  id: "aerodrome_label"
  description: |
      [Aerodrome labels](http://wiki.openstreetmap.org/wiki/Tag:aeroway%3Daerodrome)
  buffer_size: 64
  srs: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over
  fields:
    name: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the aerodrome.
    name_en: English name `name:en` if available, otherwise `name`.
    name_de: German name `name:de` if available, otherwise `name` or `name:en`.
    class:
      description: |
          Distinguish between more and less important aerodromes.
          Class is derived from the value of
          [`aerodrome`](http://wiki.openstreetmap.org/wiki/Proposed_features/Aerodrome)
          and `aerodrome:type` tags.
      values:
        international:
          aerodrome: 'international'
          aerodrome_type: 'international'
        public:
          aerodrome: 'public'
          aerodrome_type: ['%public%', 'civil']
        regional:
          aerodrome: 'regional'
          aerodrome_type: 'regional'
        military:
          aerodrome: 'military'
          aerodrome_type: '%military%'
          military: 'airfield'
        private:
          aerodrome: 'private'
          aerodrome_type: 'private'
        other:
    iata: 3-character code issued by the IATA.
    icao: 4-letter code issued by the ICAO.
    ele: Elevation (`ele`) in meters.
    ele_ft: Elevation (`ele`) in feets.
  datasource:
    geometry_field: geometry
    key_field: osm_id
    key_field_as_attribute: no
    srid: 900913
    query: (SELECT osm_id, geometry, name, name_en, name_de, {name_languages}, class, iata, icao, ele, ele_ft FROM layer_aerodrome_label(!bbox!, z(!scale_denominator!))) AS t
schema:
  - ./update_aerodrome_label_point.sql
  - ./aerodrome_label.sql
datasources:
  - type: imposm3
    mapping_file: ./mapping.yaml
