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Improve PR #183

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jirik
2017-03-21 15:53:41 +01:00
parent 380da2cae7
commit cf58a1eef6
4 changed files with 11 additions and 7 deletions
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13
layers/aeroway/layer.sql
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@@ -1,9 +1,16 @@
-- etldoc: layer_aeroway[shape=record fillcolor=lightpink, style="rounded,filled",
-- etldoc: label="layer_aeroway |<z12> z12|<z13> z13|<z14_> z14+" ];
-- etldoc: label="layer_aeroway |<z11> z11|<z12> z12|<z13> z13|<z14_> z14+" ];
CREATE OR REPLACE FUNCTION layer_aeroway(bbox geometry, zoom_level int)
RETURNS TABLE(geometry geometry, class text) AS $$
SELECT geometry, aeroway AS class FROM (
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z11
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z12
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z13
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z14_
SELECT geometry, aeroway
FROM osm_aeroway_linestring WHERE zoom_level >= 11
UNION ALL
-- etldoc: osm_aeroway_polygon_gen2 -> layer_aeroway:z12
SELECT geometry, aeroway
FROM osm_aeroway_polygon_gen2 WHERE zoom_level = 12
@@ -15,10 +22,6 @@ RETURNS TABLE(geometry geometry, class text) AS $$
-- etldoc: osm_aeroway_polygon -> layer_aeroway:z14_
SELECT geometry, aeroway
FROM osm_aeroway_polygon WHERE zoom_level >= 14
UNION ALL
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z11_
SELECT geometry, aeroway
FROM osm_aeroway_linestring WHERE zoom_level >= 11
) AS zoom_levels
WHERE geometry && bbox;
$$ LANGUAGE SQL IMMUTABLE;