openmaptiles/layers/transportation_name/layer.sql

53 wiersze
2.3 KiB
PL/PgSQL

-- etldoc: layer_transportation_name[shape=record fillcolor=lightpink, style="rounded,filled",
-- etldoc: label="layer_transportation_name | <z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14_" ] ;
CREATE OR REPLACE FUNCTION layer_transportation_name(bbox geometry, zoom_level integer)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, ref text, ref_length int, network text, class text) AS $$
SELECT osm_id, geometry, name,
NULLIF(ref, ''), NULLIF(LENGTH(ref), 0) AS ref_length,
--TODO: The road network of the road is not yet implemented
NULL::text AS network,
highway_class(highway) AS class
FROM (
-- etldoc: osm_transportation_name_linestring_gen3 -> layer_transportation_name:z8
SELECT * FROM osm_transportation_name_linestring_gen3
WHERE zoom_level = 8
UNION ALL
-- etldoc: osm_transportation_name_linestring_gen2 -> layer_transportation_name:z9
SELECT * FROM osm_transportation_name_linestring_gen2
WHERE zoom_level = 9
UNION ALL
-- etldoc: osm_transportation_name_linestring_gen1 -> layer_transportation_name:z10
-- etldoc: osm_transportation_name_linestring_gen1 -> layer_transportation_name:z11
SELECT * FROM osm_transportation_name_linestring_gen1
WHERE zoom_level BETWEEN 10 AND 11
UNION ALL
-- etldoc: osm_transportation_name_linestring -> layer_transportation_name:z12
SELECT * FROM osm_transportation_name_linestring
WHERE zoom_level = 12
AND LineLabel(zoom_level, COALESCE(NULLIF(name, ''), ref), geometry)
AND highway_class(highway) NOT IN ('minor', 'track', 'path')
AND NOT highway_is_link(highway)
UNION ALL
-- etldoc: osm_transportation_name_linestring -> layer_transportation_name:z13
SELECT * FROM osm_transportation_name_linestring
WHERE zoom_level = 13
AND LineLabel(zoom_level, COALESCE(NULLIF(name, ''), ref), geometry)
AND highway_class(highway) NOT IN ('track', 'path')
UNION ALL
-- etldoc: osm_transportation_name_linestring -> layer_transportation_name:z14_
SELECT * FROM osm_transportation_name_linestring
WHERE zoom_level >= 14
) AS zoom_levels
WHERE geometry && bbox
ORDER BY z_order ASC;
$$ LANGUAGE SQL IMMUTABLE;