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Leave attributes as NULL on low zoom levels

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This commit is contained in:
Lukas Martinelli
2016-11-28 13:34:07 +00:00
parent 1d3171185b
commit 4da3e3cc02
1 changed files with 25 additions and 12 deletions
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37
layers/transportation/layer.sql
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@@ -10,8 +10,8 @@ RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text, ramp
SELECT SELECT
osm_id, geometry, osm_id, geometry,
CASE CASE
WHEN highway IS NULL THEN highway_class(highway) WHEN highway IS NOT NULL THEN highway_class(highway)
WHEN railway IS NULL THEN railway_class(railway) WHEN railway IS NOT NULL THEN railway_class(railway)
END AS class, END AS class,
COALESCE(NULLIF(highway,''), NULLIF(railway, '')) AS subclass, COALESCE(NULLIF(highway,''), NULLIF(railway, '')) AS subclass,
-- All links are considered as ramps as well -- All links are considered as ramps as well
@@ -24,8 +24,9 @@ RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text, ramp
SELECT SELECT
NULL::bigint AS osm_id, geometry, NULL::bigint AS osm_id, geometry,
highway, NULL AS railway, NULL AS service, highway, NULL AS railway, NULL AS service,
FALSE AS is_bridge, FALSE AS is_tunnel, FALSE AS is_ford, NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
FALSE AS is_ramp, FALSE AS is_oneway, NULL::boolean AS is_ford,
NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
0 AS z_order 0 AS z_order
FROM ne_10m_global_roads FROM ne_10m_global_roads
WHERE zoom_level BETWEEN 4 AND 6 AND scalerank <= 1 + zoom_level WHERE zoom_level BETWEEN 4 AND 6 AND scalerank <= 1 + zoom_level
@@ -33,32 +34,44 @@ RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text, ramp
-- etldoc: osm_highway_linestring_gen4 -> layer_transportation:z7z8 -- etldoc: osm_highway_linestring_gen4 -> layer_transportation:z7z8
SELECT SELECT
osm_id, geometry, highway, NULL AS railway, service, osm_id, geometry, highway, NULL AS railway, NULL AS service,
is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
NULL::boolean AS is_ford,
NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
z_order
FROM osm_highway_linestring_gen4 FROM osm_highway_linestring_gen4
WHERE zoom_level BETWEEN 7 AND 8 WHERE zoom_level BETWEEN 7 AND 8
UNION ALL UNION ALL
-- etldoc: osm_highway_linestring_gen3 -> layer_transportation:z9 -- etldoc: osm_highway_linestring_gen3 -> layer_transportation:z9
SELECT SELECT
osm_id, geometry, highway, NULL AS railway, service, osm_id, geometry, highway, NULL AS railway, NULL AS service,
is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
NULL::boolean AS is_ford,
NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
z_order
FROM osm_highway_linestring_gen3 FROM osm_highway_linestring_gen3
WHERE zoom_level = 9 WHERE zoom_level = 9
UNION ALL UNION ALL
-- etldoc: osm_highway_linestring_gen2 -> layer_transportation:z10 -- etldoc: osm_highway_linestring_gen2 -> layer_transportation:z10
SELECT SELECT
osm_id, geometry, highway, NULL AS railway, service, osm_id, geometry, highway, NULL AS railway, NULL AS service,
is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
NULL::boolean AS is_ford,
NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
z_order
FROM osm_highway_linestring_gen2 FROM osm_highway_linestring_gen2
WHERE zoom_level = 10 WHERE zoom_level = 10
UNION ALL UNION ALL
-- etldoc: osm_highway_linestring_gen1 -> layer_transportation:z11 -- etldoc: osm_highway_linestring_gen1 -> layer_transportation:z11
SELECT SELECT
osm_id, geometry, highway, NULL AS railway, service, osm_id, geometry, highway, NULL AS railway, NULL AS service,
is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
NULL::boolean AS is_ford,
NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
z_order
FROM osm_highway_linestring_gen1 FROM osm_highway_linestring_gen1
WHERE zoom_level = 11 WHERE zoom_level = 11
UNION ALL UNION ALL