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Refactor place layer

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This commit is contained in:
lukasmartinelli
2016-10-28 12:05:18 +02:00
parent 52c7306563
commit 38dcc030b0
5 changed files with 52 additions and 119 deletions
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106
layers/place/place.sql
View File

@@ -1,112 +1,8 @@
CREATE OR REPLACE VIEW place_z2 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
WHERE scalerank <= 0
);
CREATE OR REPLACE VIEW place_z3 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
WHERE scalerank <= 2
);
CREATE OR REPLACE VIEW place_z4 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
WHERE scalerank <= 5
);
CREATE OR REPLACE VIEW place_z5 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
WHERE scalerank <= 6
);
CREATE OR REPLACE VIEW place_z6 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
WHERE scalerank <= 7
);
CREATE OR REPLACE VIEW place_z7 AS (
SELECT osm_id, geometry, name, name_en, place, scalerank, population
FROM osm_important_place_point
);
CREATE OR REPLACE VIEW place_z8 AS (
SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
WHERE place IN ('city', 'town')
);
CREATE OR REPLACE VIEW place_z10 AS (
SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
WHERE place IN ('city', 'town', 'village') OR place='subregion'
);
CREATE OR REPLACE VIEW place_z11 AS (
SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
WHERE place IN ('city', 'town', 'village', 'suburb')
);
CREATE OR REPLACE VIEW place_z13 AS (
SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
WHERE place IN ('city', 'town', 'village', 'suburb')
);
CREATE OR REPLACE FUNCTION layer_place(bbox geometry, zoom_level int, pixel_width numeric)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, place text, abbrev text, postal text, scalerank int) AS $$
SELECT osm_id, geometry, name, name AS name_en, 'country' AS place, abbrev, postal, scalerank FROM layer_country(bbox, zoom_level)
UNION ALL
SELECT osm_id, geometry, name, name_en, 'state' AS place, abbrev, postal, scalerank FROM layer_state(bbox, zoom_level)
UNION ALL
SELECT osm_id, geometry, name, name_en, place, NULL AS abbrev, NULL AS postal, scalerank FROM (
SELECT osm_id, geometry, name, name_en, place, scalerank,
row_number() OVER (
PARTITION BY LabelGrid(geometry, 150 * pixel_width)
ORDER BY scalerank ASC NULLS LAST,
population DESC NULLS LAST,
length(name) DESC
) AS gridrank
FROM (
--Cities
SELECT * FROM place_z2
WHERE zoom_level = 2
UNION ALL
SELECT * FROM place_z3
WHERE zoom_level = 3
UNION ALL
SELECT * FROM place_z4
WHERE zoom_level = 4
UNION ALL
SELECT * FROM place_z5
WHERE zoom_level = 5
UNION ALL
SELECT * FROM place_z6
WHERE zoom_level = 6
UNION ALL
SELECT * FROM place_z7
WHERE zoom_level = 7
UNION ALL
SELECT * FROM place_z8
WHERE zoom_level BETWEEN 8 AND 9
UNION ALL
SELECT * FROM place_z10
WHERE zoom_level = 10
UNION ALL
SELECT * FROM place_z11
WHERE zoom_level BETWEEN 11 AND 12
UNION ALL
SELECT * FROM place_z13
WHERE zoom_level >= 13
) AS zoom_levels
WHERE geometry && bbox
) AS ranked_places
WHERE
zoom_level <= 7 OR
(zoom_level = 8 AND gridrank <= 4) OR
(zoom_level = 9 AND gridrank <= 9) OR
(zoom_level = 10 AND gridrank <= 9) OR
(zoom_level = 11 AND gridrank <= 9) OR
(zoom_level = 12 AND gridrank <= 9) OR
zoom_level >= 13;
SELECT osm_id, geometry, name, name_en, place, NULL AS abbrev, NULL AS postal, scalerank FROM layer_city(bbox, zoom_level, pixel_width)
$$ LANGUAGE SQL IMMUTABLE;