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add maintenance functions for deleting/updating regions

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Sarah Hoffmann 2012-11-29 21:43:33 +01:00
parent 74f5929c2a
commit 59cbfb91cf
1 changed files with 67 additions and 0 deletions
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67
sql/functions.sql
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@ -2903,3 +2903,70 @@ BEGIN
END;
$$
LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION place_force_delete(placeid BIGINT) RETURNS BOOLEAN
AS $$
DECLARE
osmid BIGINT;
osmtype character(1);
pclass text;
ptype text;
BEGIN
SELECT osm_type, osm_id, class, type FROM placex WHERE place_id = placeid INTO osmtype, osmid, pclass, ptype;
DELETE FROM import_polygon_delete where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
DELETE FROM import_polygon_error where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
-- force delete from place/placex by making it a very small geometry
UPDATE place set geometry = ST_SetSRID(ST_Point(0,0), 4326) where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
DELETE FROM place where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
RETURN TRUE;
END;
$$
LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION place_force_update(placeid BIGINT) RETURNS BOOLEAN
AS $$
DECLARE
placegeom GEOMETRY;
geom GEOMETRY;
diameter FLOAT;
rank INTEGER;
BEGIN
SELECT geometry, rank_search FROM placex WHERE place_id = placeid INTO placegeom, rank;
IF placegeom IS NOT NULL AND ST_IsValid(placegeom) THEN
IF ST_GeometryType(placegeom) in ('ST_Polygon','ST_MultiPolygon') THEN
FOR geom IN select split_geometry(placegeom) FROM placex WHERE place_id = placeid LOOP
update placex set indexed_status = 2 where (st_covers(geom, placex.geometry) OR ST_Intersects(geom, placex.geometry))
AND rank_search > rank and indexed_status = 0 and ST_geometrytype(placex.geometry) = 'ST_Point' and (rank_search < 28 or name is not null);
update placex set indexed_status = 2 where (st_covers(geom, placex.geometry) OR ST_Intersects(geom, placex.geometry))
AND rank_search > rank and indexed_status = 0 and ST_geometrytype(placex.geometry) != 'ST_Point' and (rank_search < 28 or name is not null);
END LOOP;
ELSE
diameter := 0;
IF rank = 11 THEN
diameter := 0.05;
ELSEIF rank < 18 THEN
diameter := 0.1;
ELSEIF rank < 20 THEN
diameter := 0.05;
ELSEIF rank = 21 THEN
diameter := 0.001;
ELSEIF rank < 24 THEN
diameter := 0.02;
ELSEIF rank < 26 THEN
diameter := 0.002; -- 100 to 200 meters
ELSEIF rank < 28 THEN
diameter := 0.001; -- 50 to 100 meters
END IF;
IF diameter > 0 THEN
update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter) and (rank_search < 28 or name is not null);
END IF;
END IF;
RETURN TRUE;
END IF;
RETURN FALSE;
END;
$$
LANGUAGE plpgsql;