1 -- SPDX-License-Identifier: GPL-2.0-only
3 -- This file is part of Nominatim. (https://nominatim.org)
5 -- Copyright (C) 2022 by the Nominatim developer community.
6 -- For a full list of authors see the git log.
8 -- Assorted helper functions for the triggers.
10 CREATE OR REPLACE FUNCTION geometry_sector(partition INTEGER, place geometry)
16 -- RAISE WARNING '%',place;
17 NEWgeometry := ST_PointOnSurface(place);
18 RETURN (partition*1000000) + (500-ST_X(NEWgeometry)::integer)*1000 + (500-ST_Y(NEWgeometry)::integer);
21 LANGUAGE plpgsql IMMUTABLE;
24 CREATE OR REPLACE FUNCTION array_merge(a INTEGER[], b INTEGER[])
31 IF array_upper(a, 1) IS NULL THEN
34 IF array_upper(b, 1) IS NULL THEN
38 FOR i IN 1..array_upper(b, 1) LOOP
39 IF NOT (ARRAY[b[i]] <@ r) THEN
46 LANGUAGE plpgsql IMMUTABLE;
48 -- Return the node members with a given label from a relation member list
51 -- \param members Member list in osm2pgsql middle format.
52 -- \param memberLabels Array of labels to accept.
54 -- \returns Set of OSM ids of nodes that are found.
56 CREATE OR REPLACE FUNCTION get_rel_node_members(members TEXT[],
63 FOR i IN 1..ARRAY_UPPER(members,1) BY 2 LOOP
64 IF members[i+1] = ANY(memberLabels)
65 AND upper(substring(members[i], 1, 1))::char(1) = 'N'
67 RETURN NEXT substring(members[i], 2)::bigint;
74 LANGUAGE plpgsql IMMUTABLE;
77 CREATE OR REPLACE FUNCTION get_rel_node_members(members JSONB, memberLabels TEXT[])
83 FOR member IN SELECT * FROM jsonb_array_elements(members)
85 IF member->>'type' = 'N' and member->>'role' = ANY(memberLabels) THEN
86 RETURN NEXT (member->>'ref')::bigint;
93 LANGUAGE plpgsql IMMUTABLE;
96 -- Copy 'name' to or from the default language.
98 -- \param country_code Country code of the object being named.
99 -- \param[inout] name List of names of the object.
101 -- If the country named by country_code has a single default language,
102 -- then a `name` tag is copied to `name:<country_code>` if this tag does
103 -- not yet exist and vice versa.
104 CREATE OR REPLACE FUNCTION add_default_place_name(country_code VARCHAR(2),
108 default_language VARCHAR(10);
110 IF name is not null AND array_upper(akeys(name),1) > 1 THEN
111 default_language := get_country_language_code(country_code);
112 IF default_language IS NOT NULL THEN
113 IF name ? 'name' AND NOT name ? ('name:'||default_language) THEN
114 name := name || hstore(('name:'||default_language), (name -> 'name'));
115 ELSEIF name ? ('name:'||default_language) AND NOT name ? 'name' THEN
116 name := name || hstore('name', (name -> ('name:'||default_language)));
122 LANGUAGE plpgsql IMMUTABLE;
125 -- Find the nearest artificial postcode for the given geometry.
126 -- TODO For areas there should not be more than two inside the geometry.
127 CREATE OR REPLACE FUNCTION get_nearest_postcode(country VARCHAR(2), geom GEOMETRY)
134 -- If the geometry is an area then only one postcode must be within
135 -- that area, otherwise consider the area as not having a postcode.
136 IF ST_GeometryType(geom) in ('ST_Polygon','ST_MultiPolygon') THEN
137 SELECT min(postcode), count(*) FROM
138 (SELECT postcode FROM location_postcode
139 WHERE ST_Contains(geom, location_postcode.geometry) LIMIT 2) sub
149 SELECT postcode FROM location_postcode
150 WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
151 AND location_postcode.country_code = country
152 ORDER BY ST_Distance(geom, location_postcode.geometry) LIMIT 1
158 LANGUAGE plpgsql STABLE;
161 CREATE OR REPLACE FUNCTION get_country_code(place geometry)
165 place_centre GEOMETRY;
168 place_centre := ST_PointOnSurface(place);
170 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
172 -- Try for a OSM polygon
174 SELECT country_code from location_area_country
175 WHERE country_code is not null and st_covers(geometry, place_centre) limit 1
177 RETURN nearcountry.country_code;
180 -- RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);
182 -- Try for OSM fallback data
183 -- The order is to deal with places like HongKong that are 'states' within another polygon
185 SELECT country_code from country_osm_grid
186 WHERE st_covers(geometry, place_centre) order by area asc limit 1
188 RETURN nearcountry.country_code;
191 -- RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
196 LANGUAGE plpgsql STABLE;
199 CREATE OR REPLACE FUNCTION get_country_language_code(search_country_code VARCHAR(2))
206 SELECT distinct country_default_language_code from country_name
207 WHERE country_code = search_country_code limit 1
209 RETURN lower(nearcountry.country_default_language_code);
214 LANGUAGE plpgsql STABLE;
217 CREATE OR REPLACE FUNCTION get_partition(in_country_code VARCHAR(10))
224 SELECT partition from country_name where country_code = in_country_code
226 RETURN nearcountry.partition;
231 LANGUAGE plpgsql STABLE;
234 -- Find the parent of an address with addr:street/addr:place tag.
236 -- \param token_info Naming info with the address information.
237 -- \param partition Partition where to search the parent.
238 -- \param centroid Location of the address.
240 -- \return Place ID of the parent if one was found, NULL otherwise.
241 CREATE OR REPLACE FUNCTION find_parent_for_address(token_info JSONB,
247 parent_place_id BIGINT;
249 -- Check for addr:street attributes
250 parent_place_id := getNearestNamedRoadPlaceId(partition, centroid, token_info);
251 IF parent_place_id is not null THEN
252 {% if debug %}RAISE WARNING 'Get parent from addr:street: %', parent_place_id;{% endif %}
253 RETURN parent_place_id;
256 -- Check for addr:place attributes.
257 parent_place_id := getNearestNamedPlacePlaceId(partition, centroid, token_info);
258 {% if debug %}RAISE WARNING 'Get parent from addr:place: %', parent_place_id;{% endif %}
259 RETURN parent_place_id;
262 LANGUAGE plpgsql STABLE;
265 CREATE OR REPLACE FUNCTION delete_location(OLD_place_id BIGINT)
270 DELETE FROM location_area where place_id = OLD_place_id;
271 -- TODO:location_area
277 -- Create a bounding box with an extent computed from the radius (in meters)
278 -- which in turn is derived from the given search rank.
279 CREATE OR REPLACE FUNCTION place_node_fuzzy_area(geom GEOMETRY, rank_search INTEGER)
285 IF rank_search <= 16 THEN -- city
287 ELSIF rank_search <= 18 THEN -- town
289 ELSIF rank_search <= 19 THEN -- village
291 ELSIF rank_search <= 20 THEN -- hamlet
295 RETURN ST_Envelope(ST_Collect(
296 ST_Project(geom::geography, radius, 0.785398)::geometry,
297 ST_Project(geom::geography, radius, 3.9269908)::geometry));
300 LANGUAGE plpgsql IMMUTABLE;
303 CREATE OR REPLACE FUNCTION add_location(place_id BIGINT, country_code varchar(2),
304 partition INTEGER, keywords INTEGER[],
305 rank_search INTEGER, rank_address INTEGER,
306 in_postcode TEXT, geometry GEOMETRY,
315 PERFORM deleteLocationArea(partition, place_id, rank_search);
317 -- add postcode only if it contains a single entry, i.e. ignore postcode lists
319 IF in_postcode is not null AND in_postcode not similar to '%(,|;)%' THEN
320 postcode := upper(trim (in_postcode));
323 IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
324 FOR secgeo IN select split_geometry(geometry) AS geom LOOP
325 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, postcode, centroid, secgeo);
328 ELSEIF ST_GeometryType(geometry) = 'ST_Point' THEN
329 secgeo := place_node_fuzzy_area(geometry, rank_search);
330 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, true, postcode, centroid, secgeo);
340 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT,
342 RETURNS SETOF GEOMETRY
356 remainingdepth INTEGER;
360 -- RAISE WARNING 'quad_split_geometry: maxarea=%, depth=%',maxarea,maxdepth;
362 IF (ST_GeometryType(geometry) not in ('ST_Polygon','ST_MultiPolygon') OR NOT ST_IsValid(geometry)) THEN
363 RETURN NEXT geometry;
367 remainingdepth := maxdepth - 1;
368 area := ST_AREA(geometry);
369 IF remainingdepth < 1 OR area < maxarea THEN
370 RETURN NEXT geometry;
374 xmin := st_xmin(geometry);
375 xmax := st_xmax(geometry);
376 ymin := st_ymin(geometry);
377 ymax := st_ymax(geometry);
378 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(ymin,xmin),ST_Point(ymax,xmax)),4326);
380 -- if the geometry completely covers the box don't bother to slice any more
381 IF ST_AREA(secbox) = area THEN
382 RETURN NEXT geometry;
386 xmid := (xmin+xmax)/2;
387 ymid := (ymin+ymax)/2;
393 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymin),ST_Point(xmid,ymid)),4326);
396 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymid),ST_Point(xmid,ymax)),4326);
399 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymin),ST_Point(xmax,ymid)),4326);
402 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymid),ST_Point(xmax,ymax)),4326);
405 IF st_intersects(geometry, secbox) THEN
406 secgeo := st_intersection(geometry, secbox);
407 IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
408 FOR geo IN select quad_split_geometry(secgeo, maxarea, remainingdepth) as geom LOOP
409 IF NOT ST_IsEmpty(geo.geom) AND ST_GeometryType(geo.geom) in ('ST_Polygon','ST_MultiPolygon') THEN
411 RETURN NEXT geo.geom;
421 LANGUAGE plpgsql IMMUTABLE;
424 CREATE OR REPLACE FUNCTION split_geometry(geometry GEOMETRY)
425 RETURNS SETOF GEOMETRY
430 -- 10000000000 is ~~ 1x1 degree
431 FOR geo IN select quad_split_geometry(geometry, 0.25, 20) as geom LOOP
432 RETURN NEXT geo.geom;
437 LANGUAGE plpgsql IMMUTABLE;
439 CREATE OR REPLACE FUNCTION simplify_large_polygons(geometry GEOMETRY)
443 IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon')
444 and ST_MemSize(geometry) > 3000000
446 geometry := ST_SimplifyPreserveTopology(geometry, 0.0001);
451 LANGUAGE plpgsql IMMUTABLE;
454 CREATE OR REPLACE FUNCTION place_force_delete(placeid BIGINT)
459 osmtype character(1);
463 SELECT osm_type, osm_id, class, type FROM placex WHERE place_id = placeid INTO osmtype, osmid, pclass, ptype;
464 DELETE FROM import_polygon_delete where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
465 DELETE FROM import_polygon_error where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
466 -- force delete by directly entering it into the to-be-deleted table
467 INSERT INTO place_to_be_deleted (osm_type, osm_id, class, type, deferred)
468 VALUES(osmtype, osmid, pclass, ptype, false);
469 PERFORM flush_deleted_places();
477 CREATE OR REPLACE FUNCTION place_force_update(placeid BIGINT)
486 UPDATE placex SET indexed_status = 2 WHERE place_id = placeid;
488 SELECT geometry, rank_address INTO placegeom, rank
489 FROM placex WHERE place_id = placeid;
491 IF placegeom IS NOT NULL AND ST_IsValid(placegeom) THEN
492 IF ST_GeometryType(placegeom) in ('ST_Polygon','ST_MultiPolygon')
495 FOR geom IN SELECT split_geometry(placegeom) LOOP
496 UPDATE placex SET indexed_status = 2
497 WHERE ST_Intersects(geom, placex.geometry)
498 and indexed_status = 0
499 and ((rank_address = 0 and rank_search > rank) or rank_address > rank)
500 and (rank_search < 28 or name is not null or (rank >= 16 and address ? 'place'));
503 diameter := update_place_diameter(rank);
506 -- roads may cause reparenting for >27 rank places
507 update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter);
508 ELSEIF rank >= 16 THEN
509 -- up to rank 16, street-less addresses may need reparenting
510 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');
512 -- for all other places the search terms may change as well
513 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);
525 CREATE OR REPLACE FUNCTION flush_deleted_places()
529 -- deleting large polygons can have a massive effect on the system - require manual intervention to let them through
530 INSERT INTO import_polygon_delete (osm_type, osm_id, class, type)
531 SELECT osm_type, osm_id, class, type FROM place_to_be_deleted WHERE deferred;
533 -- delete from place table
534 ALTER TABLE place DISABLE TRIGGER place_before_delete;
535 DELETE FROM place USING place_to_be_deleted
536 WHERE place.osm_type = place_to_be_deleted.osm_type
537 and place.osm_id = place_to_be_deleted.osm_id
538 and place.class = place_to_be_deleted.class
539 and place.type = place_to_be_deleted.type
541 ALTER TABLE place ENABLE TRIGGER place_before_delete;
543 -- Mark for delete in the placex table
544 UPDATE placex SET indexed_status = 100 FROM place_to_be_deleted
545 WHERE placex.osm_type = 'N' and place_to_be_deleted.osm_type = 'N'
546 and placex.osm_id = place_to_be_deleted.osm_id
547 and placex.class = place_to_be_deleted.class
548 and placex.type = place_to_be_deleted.type
550 UPDATE placex SET indexed_status = 100 FROM place_to_be_deleted
551 WHERE placex.osm_type = 'W' and place_to_be_deleted.osm_type = 'W'
552 and placex.osm_id = place_to_be_deleted.osm_id
553 and placex.class = place_to_be_deleted.class
554 and placex.type = place_to_be_deleted.type
556 UPDATE placex SET indexed_status = 100 FROM place_to_be_deleted
557 WHERE placex.osm_type = 'R' and place_to_be_deleted.osm_type = 'R'
558 and placex.osm_id = place_to_be_deleted.osm_id
559 and placex.class = place_to_be_deleted.class
560 and placex.type = place_to_be_deleted.type
563 -- Mark for delete in interpolations
564 UPDATE location_property_osmline SET indexed_status = 100 FROM place_to_be_deleted
565 WHERE place_to_be_deleted.osm_type = 'W'
566 and place_to_be_deleted.class = 'place'
567 and place_to_be_deleted.type = 'houses'
568 and location_property_osmline.osm_id = place_to_be_deleted.osm_id
572 TRUNCATE TABLE place_to_be_deleted;