kopia lustrzana https://github.com/openmaptiles/openmaptiles
87 wiersze
3.5 KiB
PL/PgSQL
87 wiersze
3.5 KiB
PL/PgSQL
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-- etldoc: ne_110m_rivers_lake_centerlines -> waterway_z3
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CREATE OR REPLACE VIEW waterway_z3 AS (
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SELECT geom AS geometry, 'river'::text AS class, NULL AS name FROM ne_110m_rivers_lake_centerlines
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WHERE featurecla = 'River'
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);
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-- etldoc: ne_50m_rivers_lake_centerlines -> waterway_z4
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CREATE OR REPLACE VIEW waterway_z4 AS (
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SELECT geom AS geometry, 'river'::text AS class, NULL AS name FROM ne_50m_rivers_lake_centerlines
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WHERE featurecla = 'River'
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);
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-- etldoc: ne_10m_rivers_lake_centerlines -> waterway_z6
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CREATE OR REPLACE VIEW waterway_z6 AS (
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SELECT geom AS geometry, 'river'::text AS class, NULL AS name FROM ne_10m_rivers_lake_centerlines
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WHERE featurecla = 'River'
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);
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-- etldoc: osm_waterway_linestring_gen3 -> waterway_z9
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CREATE OR REPLACE VIEW waterway_z9 AS (
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SELECT geometry, 'river'::text AS class, name FROM osm_important_waterway_linestring_gen3
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);
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-- etldoc: osm_waterway_linestring_gen2 -> waterway_z10
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CREATE OR REPLACE VIEW waterway_z10 AS (
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SELECT geometry, 'river'::text AS class, name FROM osm_important_waterway_linestring_gen2
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);
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-- etldoc: osm_waterway_linestring_gen1 -> waterway_z11
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CREATE OR REPLACE VIEW waterway_z11 AS (
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SELECT geometry, 'river'::text AS class, name FROM osm_important_waterway_linestring_gen1
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);
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-- etldoc: osm_waterway_linestring -> waterway_z12
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CREATE OR REPLACE VIEW waterway_z12 AS (
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SELECT geometry, waterway AS class, name FROM osm_waterway_linestring
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WHERE waterway IN ('river', 'canal')
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);
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-- etldoc: osm_waterway_linestring -> waterway_z13
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CREATE OR REPLACE VIEW waterway_z13 AS (
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SELECT geometry, waterway::text AS class, name FROM osm_waterway_linestring
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WHERE waterway IN ('river', 'canal', 'stream', 'drain', 'ditch')
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);
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-- etldoc: osm_waterway_linestring -> waterway_z14
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CREATE OR REPLACE VIEW waterway_z14 AS (
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SELECT geometry, waterway::text AS class, name FROM osm_waterway_linestring
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);
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-- etldoc: layer_waterway[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_waterway | <z3> z3 |<z4_5> z4-z5 |<z6_8> z6-8 | <z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14> z14" ];
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CREATE OR REPLACE FUNCTION layer_waterway(bbox geometry, zoom_level int)
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RETURNS TABLE(geometry geometry, class text, name text) AS $$
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SELECT geometry, class, NULLIF(name, '') AS name FROM (
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-- etldoc: waterway_z3 -> layer_waterway:z3
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SELECT * FROM waterway_z3 WHERE zoom_level = 3
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UNION ALL
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-- etldoc: waterway_z4 -> layer_waterway:z4_5
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SELECT * FROM waterway_z4 WHERE zoom_level BETWEEN 4 AND 5
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UNION ALL
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-- etldoc: waterway_z6 -> layer_waterway:z6_8
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SELECT * FROM waterway_z6 WHERE zoom_level BETWEEN 6 AND 8
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UNION ALL
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-- etldoc: waterway_z9 -> layer_waterway:z9
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SELECT * FROM waterway_z9 WHERE zoom_level = 9
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UNION ALL
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-- etldoc: waterway_z10 -> layer_waterway:z10
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SELECT * FROM waterway_z10 WHERE zoom_level = 10
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UNION ALL
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-- etldoc: waterway_z11 -> layer_waterway:z11
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SELECT * FROM waterway_z11 WHERE zoom_level = 11
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UNION ALL
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-- etldoc: waterway_z12 -> layer_waterway:z12
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SELECT * FROM waterway_z12 WHERE zoom_level = 12
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UNION ALL
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-- etldoc: waterway_z13 -> layer_waterway:z13
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SELECT * FROM waterway_z13 WHERE zoom_level = 13
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UNION ALL
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-- etldoc: waterway_z14 -> layer_waterway:z14
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SELECT * FROM waterway_z14 WHERE zoom_level >= 14
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) AS zoom_levels
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WHERE geometry && bbox;
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$$ LANGUAGE SQL IMMUTABLE;
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