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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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18
layers/place/state.sql
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@@ -19,24 +19,16 @@ CREATE TABLE IF NOT EXISTS state_label AS (
);
CREATE INDEX IF NOT EXISTS state_label_geometry_idx ON state_label USING gist(geometry);
CREATE OR REPLACE VIEW state_z3 AS (
SELECT * FROM state_label
WHERE (scalerank <= 2 AND labelrank <= 1) OR type = 'Avtonomnyy Okrug'
);
CREATE OR REPLACE VIEW state_z4 AS (
SELECT * FROM state_label
);
CREATE OR REPLACE FUNCTION layer_state(bbox geometry, zoom_level int)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, abbrev text, postal text, scalerank int, labelrank int) AS $$
SELECT osm_id, geometry,
COALESCE(name_local, name_en) AS name_local, name_en,
COALESCE(name_local, name_en) AS name, name_en,
abbrev, postal, scalerank::int, labelrank::int FROM (
SELECT * FROM state_z3
WHERE zoom_level = 3
SELECT * FROM state_label
WHERE (zoom_level = 3)
AND ((scalerank <= 2 AND labelrank <= 1) OR type = 'Avtonomnyy Okrug')
UNION ALL
SELECT * FROM state_z4
SELECT * FROM state_label
WHERE zoom_level >= 4
) AS t
WHERE geometry && bbox