1614a4656c
Simplify some of the OSM->OMT field value mappings using declarative syntax. This approach is not for all cases, but in many it removes the need of storing the same field in both the .yaml and .sql files. TODO: support more complex AND/OR cases
41 lines
1.1 KiB
PL/PgSQL
41 lines
1.1 KiB
PL/PgSQL
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-- etldoc: layer_aerodrome_label[shape=record fillcolor=lightpink, style="rounded,filled", label="layer_aerodrome_label | <z10_> z10+" ] ;
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CREATE OR REPLACE FUNCTION layer_aerodrome_label(
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bbox geometry,
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zoom_level integer,
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pixel_width numeric)
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RETURNS TABLE(
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osm_id bigint,
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geometry geometry,
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name text,
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name_en text,
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name_de text,
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tags hstore,
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class text,
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iata text,
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icao text,
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ele int,
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ele_ft int) AS
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$$
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-- etldoc: osm_aerodrome_label_point -> layer_aerodrome_label:z10_
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SELECT
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osm_id,
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geometry,
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name,
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COALESCE(NULLIF(name_en, ''), name) AS name_en,
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COALESCE(NULLIF(name_de, ''), name, name_en) AS name_de,
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tags,
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CASE
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%%FIELD_MAPPING: class %%
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ELSE 'other'
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END AS class,
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NULLIF(iata, '') AS iata,
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NULLIF(icao, '') AS icao,
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substring(ele from E'^(-?\\d+)(\\D|$)')::int AS ele,
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round(substring(ele from E'^(-?\\d+)(\\D|$)')::int*3.2808399)::int AS ele_ft
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FROM osm_aerodrome_label_point
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WHERE geometry && bbox AND zoom_level >= 10;
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$$ LANGUAGE SQL IMMUTABLE;
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