kopia lustrzana https://github.com/openmaptiles/openmaptiles
128 wiersze
5.6 KiB
PL/PgSQL
128 wiersze
5.6 KiB
PL/PgSQL
CREATE OR REPLACE FUNCTION highway_is_link(highway TEXT) RETURNS BOOLEAN AS $$
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SELECT highway LIKE '%_link';
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$$ LANGUAGE SQL IMMUTABLE STRICT;
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-- etldoc: layer_transportation[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="<sql> layer_transportation |<z4z6> z4-z6 |<z7z8> z7-z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14+" ] ;
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CREATE OR REPLACE FUNCTION layer_transportation(bbox geometry, zoom_level int)
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RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text, ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
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SELECT
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osm_id, geometry,
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CASE
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WHEN highway IS NOT NULL THEN highway_class(highway)
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WHEN railway IS NOT NULL THEN railway_class(railway)
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END AS class,
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COALESCE(NULLIF(highway,''), NULLIF(railway, '')) AS subclass,
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-- All links are considered as ramps as well
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CASE WHEN highway_is_link(highway) THEN 1 ELSE is_ramp::int END AS ramp,
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is_oneway::int AS oneway,
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brunnel(is_bridge, is_tunnel, is_ford) AS brunnel,
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NULLIF(service, '') AS service
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FROM (
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-- etldoc: ne_10m_roads -> layer_transportation:z4z6
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SELECT
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NULL::bigint AS osm_id, geom AS geometry,
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ne_highway(type) AS highway, NULL AS railway, NULL AS service,
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NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
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NULL::boolean AS is_ford,
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NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
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0 AS z_order
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FROM ne_10m_roads
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WHERE featurecla = 'Road'
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AND type IN ('Major Highway', 'Secondary Highway', 'Road')
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AND zoom_level BETWEEN 4 AND 6 AND scalerank <= 1 + zoom_level
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UNION ALL
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-- etldoc: osm_highway_linestring_gen4 -> layer_transportation:z7z8
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SELECT
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osm_id, geometry, highway, NULL AS railway, NULL AS service,
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NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
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NULL::boolean AS is_ford,
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NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
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z_order
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FROM osm_highway_linestring_gen4
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WHERE zoom_level BETWEEN 7 AND 8
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UNION ALL
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-- etldoc: osm_highway_linestring_gen3 -> layer_transportation:z9
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SELECT
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osm_id, geometry, highway, NULL AS railway, NULL AS service,
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NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
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NULL::boolean AS is_ford,
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NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
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z_order
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FROM osm_highway_linestring_gen3
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WHERE zoom_level = 9
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UNION ALL
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-- etldoc: osm_highway_linestring_gen2 -> layer_transportation:z10
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SELECT
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osm_id, geometry, highway, NULL AS railway, NULL AS service,
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NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
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NULL::boolean AS is_ford,
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NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
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z_order
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FROM osm_highway_linestring_gen2
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WHERE zoom_level = 10
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UNION ALL
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-- etldoc: osm_highway_linestring_gen1 -> layer_transportation:z11
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SELECT
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osm_id, geometry, highway, NULL AS railway, NULL AS service,
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NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
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NULL::boolean AS is_ford,
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NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
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z_order
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FROM osm_highway_linestring_gen1
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WHERE zoom_level = 11
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UNION ALL
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-- etldoc: osm_highway_linestring -> layer_transportation:z12
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-- etldoc: osm_highway_linestring -> layer_transportation:z13
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-- etldoc: osm_highway_linestring -> layer_transportation:z14_
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SELECT
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osm_id, geometry, highway, NULL AS railway,
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service_value(service) AS service,
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is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
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FROM osm_highway_linestring
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WHERE NOT is_area AND (
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zoom_level = 12 AND (
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highway_class(highway) NOT IN ('track', 'path', 'minor')
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OR highway IN ('unclassified', 'residential')
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)
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OR zoom_level = 13 AND highway_class(highway) NOT IN ('track', 'path')
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OR zoom_level >= 14
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)
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UNION ALL
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-- etldoc: osm_railway_linestring -> layer_transportation:z13
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-- etldoc: osm_railway_linestring -> layer_transportation:z14_
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SELECT
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osm_id, geometry, NULL AS highway, railway,
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service_value(service) AS service,
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is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
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FROM osm_railway_linestring
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WHERE zoom_level = 13 AND (railway='rail' AND service = '')
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OR zoom_Level >= 14
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UNION ALL
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-- NOTE: We limit the selection of polys because we need to be
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-- careful to net get false positives here because
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-- it is possible that closed linestrings appear both as
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-- highway linestrings and as polygon
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-- etldoc: osm_highway_polygon -> layer_transportation:z13
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-- etldoc: osm_highway_polygon -> layer_transportation:z14_
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SELECT
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osm_id, geometry,
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highway, NULL AS railway, NULL AS service,
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FALSE AS is_bridge, FALSE AS is_tunnel, FALSE AS is_ford,
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FALSE AS is_ramp, FALSE AS is_oneway, z_order
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FROM osm_highway_polygon
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-- We do not want underground pedestrian areas for now
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WHERE zoom_level >= 13 AND is_area AND COALESCE(layer, 0) >= 0
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) AS zoom_levels
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WHERE geometry && bbox
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ORDER BY z_order ASC;
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$$ LANGUAGE SQL IMMUTABLE;
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