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Housenumber and POI calc optimisation (#247)

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Using NPoints(Centroid) = NPoints, thanks edpop
This commit is contained in:
Eduard Popov 2017-05-22 11:01:31 +10:00 committed by stirringhalo
parent 239f0c6643
commit 0a26d2be99
2 changed files with 14 additions and 2 deletions
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8
layers/housenumber/housenumber_centroid.sql
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@ -4,7 +4,13 @@ DROP TRIGGER IF EXISTS trigger_refresh ON housenumber.updates;
-- etldoc: osm_housenumber_point -> osm_housenumber_point -- etldoc: osm_housenumber_point -> osm_housenumber_point
CREATE OR REPLACE FUNCTION convert_housenumber_point() RETURNS VOID AS $$ CREATE OR REPLACE FUNCTION convert_housenumber_point() RETURNS VOID AS $$
BEGIN BEGIN
UPDATE osm_housenumber_point SET geometry=ST_PointOnSurface(geometry) WHERE ST_GeometryType(geometry) <> 'ST_Point'; UPDATE osm_housenumber_point
SET geometry =
CASE WHEN ST_NPoints(ST_ConvexHull(geometry))=ST_NPoints(geometry)
THEN ST_Centroid(geometry)
ELSE ST_PointOnSurface(geometry)
END
WHERE ST_GeometryType(geometry) <> 'ST_Point';
END; END;
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;

8
layers/poi/poi_polygon_update.sql
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@ -5,7 +5,13 @@ DROP TRIGGER IF EXISTS trigger_refresh ON poi.updates;
CREATE OR REPLACE FUNCTION convert_poi_point() RETURNS VOID AS $$ CREATE OR REPLACE FUNCTION convert_poi_point() RETURNS VOID AS $$
BEGIN BEGIN
UPDATE osm_poi_polygon SET geometry=ST_PointOnSurface(geometry) WHERE ST_GeometryType(geometry) <> 'ST_Point'; UPDATE osm_poi_polygon
SET geometry =
CASE WHEN ST_NPoints(ST_ConvexHull(geometry))=ST_NPoints(geometry)
THEN ST_Centroid(geometry)
ELSE ST_PointOnSurface(geometry)
END
WHERE ST_GeometryType(geometry) <> 'ST_Point';
ANALYZE osm_poi_polygon; ANALYZE osm_poi_polygon;
END; END;
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;