1 -- Assorted helper functions for the triggers.
3 CREATE OR REPLACE FUNCTION geometry_sector(partition INTEGER, place geometry)
9 -- RAISE WARNING '%',place;
10 NEWgeometry := ST_PointOnSurface(place);
11 RETURN (partition*1000000) + (500-ST_X(NEWgeometry)::integer)*1000 + (500-ST_Y(NEWgeometry)::integer);
14 LANGUAGE plpgsql IMMUTABLE;
17 CREATE OR REPLACE FUNCTION array_merge(a INTEGER[], b INTEGER[])
24 IF array_upper(a, 1) IS NULL THEN
27 IF array_upper(b, 1) IS NULL THEN
31 FOR i IN 1..array_upper(b, 1) LOOP
32 IF NOT (ARRAY[b[i]] <@ r) THEN
39 LANGUAGE plpgsql IMMUTABLE;
41 -- Return the node members with a given label from a relation member list
44 -- \param members Member list in osm2pgsql middle format.
45 -- \param memberLabels Array of labels to accept.
47 -- \returns Set of OSM ids of nodes that are found.
49 CREATE OR REPLACE FUNCTION get_rel_node_members(members TEXT[],
56 FOR i IN 1..ARRAY_UPPER(members,1) BY 2 LOOP
57 IF members[i+1] = ANY(memberLabels)
58 AND upper(substring(members[i], 1, 1))::char(1) = 'N'
60 RETURN NEXT substring(members[i], 2)::bigint;
67 LANGUAGE plpgsql IMMUTABLE;
69 -- Copy 'name' to or from the default language.
71 -- \param country_code Country code of the object being named.
72 -- \param[inout] name List of names of the object.
74 -- If the country named by country_code has a single default language,
75 -- then a `name` tag is copied to `name:<country_code>` if this tag does
76 -- not yet exist and vice versa.
77 CREATE OR REPLACE FUNCTION add_default_place_name(country_code VARCHAR(2),
81 default_language VARCHAR(10);
83 IF name is not null AND array_upper(akeys(name),1) > 1 THEN
84 default_language := get_country_language_code(country_code);
85 IF default_language IS NOT NULL THEN
86 IF name ? 'name' AND NOT name ? ('name:'||default_language) THEN
87 name := name || hstore(('name:'||default_language), (name -> 'name'));
88 ELSEIF name ? ('name:'||default_language) AND NOT name ? 'name' THEN
89 name := name || hstore('name', (name -> ('name:'||default_language)));
95 LANGUAGE plpgsql IMMUTABLE;
98 -- Find the nearest artificial postcode for the given geometry.
99 -- TODO For areas there should not be more than two inside the geometry.
100 CREATE OR REPLACE FUNCTION get_nearest_postcode(country VARCHAR(2), geom GEOMETRY)
107 -- If the geometry is an area then only one postcode must be within
108 -- that area, otherwise consider the area as not having a postcode.
109 IF ST_GeometryType(geom) in ('ST_Polygon','ST_MultiPolygon') THEN
110 SELECT min(postcode), count(*) FROM
111 (SELECT postcode FROM location_postcode
112 WHERE ST_Contains(geom, location_postcode.geometry) LIMIT 2) sub
122 SELECT postcode FROM location_postcode
123 WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
124 AND location_postcode.country_code = country
125 ORDER BY ST_Distance(geom, location_postcode.geometry) LIMIT 1
131 LANGUAGE plpgsql STABLE;
134 CREATE OR REPLACE FUNCTION get_country_code(place geometry)
138 place_centre GEOMETRY;
141 place_centre := ST_PointOnSurface(place);
143 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
145 -- Try for a OSM polygon
147 SELECT country_code from location_area_country
148 WHERE country_code is not null and st_covers(geometry, place_centre) limit 1
150 RETURN nearcountry.country_code;
153 -- RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);
155 -- Try for OSM fallback data
156 -- The order is to deal with places like HongKong that are 'states' within another polygon
158 SELECT country_code from country_osm_grid
159 WHERE st_covers(geometry, place_centre) order by area asc limit 1
161 RETURN nearcountry.country_code;
164 -- RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
168 SELECT country_code from country_osm_grid
169 WHERE st_dwithin(geometry, place_centre, 0.5)
170 ORDER BY st_distance(geometry, place_centre) asc, area asc limit 1
172 RETURN nearcountry.country_code;
178 LANGUAGE plpgsql STABLE;
181 CREATE OR REPLACE FUNCTION get_country_language_code(search_country_code VARCHAR(2))
188 SELECT distinct country_default_language_code from country_name
189 WHERE country_code = search_country_code limit 1
191 RETURN lower(nearcountry.country_default_language_code);
196 LANGUAGE plpgsql STABLE;
199 CREATE OR REPLACE FUNCTION get_partition(in_country_code VARCHAR(10))
206 SELECT partition from country_name where country_code = in_country_code
208 RETURN nearcountry.partition;
213 LANGUAGE plpgsql STABLE;
216 -- Find the parent of an address with addr:street/addr:place tag.
218 -- \param token_info Naming info with the address information.
219 -- \param partition Partition where to search the parent.
220 -- \param centroid Location of the address.
222 -- \return Place ID of the parent if one was found, NULL otherwise.
223 CREATE OR REPLACE FUNCTION find_parent_for_address(token_info JSONB,
229 parent_place_id BIGINT;
231 -- Check for addr:street attributes
232 parent_place_id := getNearestNamedRoadPlaceId(partition, centroid, token_info);
233 IF parent_place_id is not null THEN
234 {% if debug %}RAISE WARNING 'Get parent from addr:street: %', parent_place_id;{% endif %}
235 RETURN parent_place_id;
238 -- Check for addr:place attributes.
239 parent_place_id := getNearestNamedPlacePlaceId(partition, centroid, token_info);
240 {% if debug %}RAISE WARNING 'Get parent from addr:place: %', parent_place_id;{% endif %}
241 RETURN parent_place_id;
244 LANGUAGE plpgsql STABLE;
247 CREATE OR REPLACE FUNCTION delete_location(OLD_place_id BIGINT)
252 DELETE FROM location_area where place_id = OLD_place_id;
253 -- TODO:location_area
259 -- Create a bounding box with an extent computed from the radius (in meters)
260 -- which in turn is derived from the given search rank.
261 CREATE OR REPLACE FUNCTION place_node_fuzzy_area(geom GEOMETRY, rank_search INTEGER)
267 IF rank_search <= 16 THEN -- city
269 ELSIF rank_search <= 18 THEN -- town
271 ELSIF rank_search <= 19 THEN -- village
273 ELSIF rank_search <= 20 THEN -- hamlet
277 RETURN ST_Envelope(ST_Collect(
278 ST_Project(geom, radius, 0.785398)::geometry,
279 ST_Project(geom, radius, 3.9269908)::geometry));
282 LANGUAGE plpgsql IMMUTABLE;
285 CREATE OR REPLACE FUNCTION add_location(place_id BIGINT, country_code varchar(2),
286 partition INTEGER, keywords INTEGER[],
287 rank_search INTEGER, rank_address INTEGER,
288 in_postcode TEXT, geometry GEOMETRY,
297 PERFORM deleteLocationArea(partition, place_id, rank_search);
299 -- add postcode only if it contains a single entry, i.e. ignore postcode lists
301 IF in_postcode is not null AND in_postcode not similar to '%(,|;)%' THEN
302 postcode := upper(trim (in_postcode));
305 IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
306 FOR secgeo IN select split_geometry(geometry) AS geom LOOP
307 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, postcode, centroid, secgeo);
310 ELSEIF ST_GeometryType(geometry) = 'ST_Point' THEN
311 secgeo := place_node_fuzzy_area(geometry, rank_search);
312 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, true, postcode, centroid, secgeo);
322 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT,
324 RETURNS SETOF GEOMETRY
338 remainingdepth INTEGER;
342 -- RAISE WARNING 'quad_split_geometry: maxarea=%, depth=%',maxarea,maxdepth;
344 IF (ST_GeometryType(geometry) not in ('ST_Polygon','ST_MultiPolygon') OR NOT ST_IsValid(geometry)) THEN
345 RETURN NEXT geometry;
349 remainingdepth := maxdepth - 1;
350 area := ST_AREA(geometry);
351 IF remainingdepth < 1 OR area < maxarea THEN
352 RETURN NEXT geometry;
356 xmin := st_xmin(geometry);
357 xmax := st_xmax(geometry);
358 ymin := st_ymin(geometry);
359 ymax := st_ymax(geometry);
360 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(ymin,xmin),ST_Point(ymax,xmax)),4326);
362 -- if the geometry completely covers the box don't bother to slice any more
363 IF ST_AREA(secbox) = area THEN
364 RETURN NEXT geometry;
368 xmid := (xmin+xmax)/2;
369 ymid := (ymin+ymax)/2;
375 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymin),ST_Point(xmid,ymid)),4326);
378 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymid),ST_Point(xmid,ymax)),4326);
381 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymin),ST_Point(xmax,ymid)),4326);
384 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymid),ST_Point(xmax,ymax)),4326);
387 IF st_intersects(geometry, secbox) THEN
388 secgeo := st_intersection(geometry, secbox);
389 IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
390 FOR geo IN select quad_split_geometry(secgeo, maxarea, remainingdepth) as geom LOOP
391 IF NOT ST_IsEmpty(geo.geom) AND ST_GeometryType(geo.geom) in ('ST_Polygon','ST_MultiPolygon') THEN
393 RETURN NEXT geo.geom;
403 LANGUAGE plpgsql IMMUTABLE;
406 CREATE OR REPLACE FUNCTION split_geometry(geometry GEOMETRY)
407 RETURNS SETOF GEOMETRY
412 -- 10000000000 is ~~ 1x1 degree
413 FOR geo IN select quad_split_geometry(geometry, 0.25, 20) as geom LOOP
414 RETURN NEXT geo.geom;
419 LANGUAGE plpgsql IMMUTABLE;
422 CREATE OR REPLACE FUNCTION place_force_delete(placeid BIGINT)
427 osmtype character(1);
431 SELECT osm_type, osm_id, class, type FROM placex WHERE place_id = placeid INTO osmtype, osmid, pclass, ptype;
432 DELETE FROM import_polygon_delete where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
433 DELETE FROM import_polygon_error where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
434 -- force delete from place/placex by making it a very small geometry
435 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;
436 DELETE FROM place where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
444 CREATE OR REPLACE FUNCTION place_force_update(placeid BIGINT)
453 UPDATE placex SET indexed_status = 2 WHERE place_id = placeid;
455 SELECT geometry, rank_address INTO placegeom, rank
456 FROM placex WHERE place_id = placeid;
458 IF placegeom IS NOT NULL AND ST_IsValid(placegeom) THEN
459 IF ST_GeometryType(placegeom) in ('ST_Polygon','ST_MultiPolygon')
462 FOR geom IN SELECT split_geometry(placegeom) LOOP
463 UPDATE placex SET indexed_status = 2
464 WHERE ST_Intersects(geom, placex.geometry)
465 and indexed_status = 0
466 and ((rank_address = 0 and rank_search > rank) or rank_address > rank)
467 and (rank_search < 28 or name is not null or (rank >= 16 and address ? 'place'));
470 diameter := update_place_diameter(rank);
473 -- roads may cause reparenting for >27 rank places
474 update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter);
475 ELSEIF rank >= 16 THEN
476 -- up to rank 16, street-less addresses may need reparenting
477 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 or address ? 'place');
479 -- for all other places the search terms may change as well
480 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);