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;
76 -- Copy 'name' to or from the default language.
78 -- \param country_code Country code of the object being named.
79 -- \param[inout] name List of names of the object.
81 -- If the country named by country_code has a single default language,
82 -- then a `name` tag is copied to `name:<country_code>` if this tag does
83 -- not yet exist and vice versa.
84 CREATE OR REPLACE FUNCTION add_default_place_name(country_code VARCHAR(2),
88 default_language VARCHAR(10);
90 IF name is not null AND array_upper(akeys(name),1) > 1 THEN
91 default_language := get_country_language_code(country_code);
92 IF default_language IS NOT NULL THEN
93 IF name ? 'name' AND NOT name ? ('name:'||default_language) THEN
94 name := name || hstore(('name:'||default_language), (name -> 'name'));
95 ELSEIF name ? ('name:'||default_language) AND NOT name ? 'name' THEN
96 name := name || hstore('name', (name -> ('name:'||default_language)));
102 LANGUAGE plpgsql IMMUTABLE;
105 -- Find the nearest artificial postcode for the given geometry.
106 -- TODO For areas there should not be more than two inside the geometry.
107 CREATE OR REPLACE FUNCTION get_nearest_postcode(country VARCHAR(2), geom GEOMETRY)
114 -- If the geometry is an area then only one postcode must be within
115 -- that area, otherwise consider the area as not having a postcode.
116 IF ST_GeometryType(geom) in ('ST_Polygon','ST_MultiPolygon') THEN
117 SELECT min(postcode), count(*) FROM
118 (SELECT postcode FROM location_postcode
119 WHERE ST_Contains(geom, location_postcode.geometry) LIMIT 2) sub
129 SELECT postcode FROM location_postcode
130 WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
131 AND location_postcode.country_code = country
132 ORDER BY ST_Distance(geom, location_postcode.geometry) LIMIT 1
138 LANGUAGE plpgsql STABLE;
141 CREATE OR REPLACE FUNCTION get_country_code(place geometry)
145 place_centre GEOMETRY;
148 place_centre := ST_PointOnSurface(place);
150 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
152 -- Try for a OSM polygon
154 SELECT country_code from location_area_country
155 WHERE country_code is not null and st_covers(geometry, place_centre) limit 1
157 RETURN nearcountry.country_code;
160 -- RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);
162 -- Try for OSM fallback data
163 -- The order is to deal with places like HongKong that are 'states' within another polygon
165 SELECT country_code from country_osm_grid
166 WHERE st_covers(geometry, place_centre) order by area asc limit 1
168 RETURN nearcountry.country_code;
171 -- RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
176 LANGUAGE plpgsql STABLE;
179 CREATE OR REPLACE FUNCTION get_country_language_code(search_country_code VARCHAR(2))
186 SELECT distinct country_default_language_code from country_name
187 WHERE country_code = search_country_code limit 1
189 RETURN lower(nearcountry.country_default_language_code);
194 LANGUAGE plpgsql STABLE;
197 CREATE OR REPLACE FUNCTION get_partition(in_country_code VARCHAR(10))
204 SELECT partition from country_name where country_code = in_country_code
206 RETURN nearcountry.partition;
211 LANGUAGE plpgsql STABLE;
214 -- Find the parent of an address with addr:street/addr:place tag.
216 -- \param token_info Naming info with the address information.
217 -- \param partition Partition where to search the parent.
218 -- \param centroid Location of the address.
220 -- \return Place ID of the parent if one was found, NULL otherwise.
221 CREATE OR REPLACE FUNCTION find_parent_for_address(token_info JSONB,
227 parent_place_id BIGINT;
229 -- Check for addr:street attributes
230 parent_place_id := getNearestNamedRoadPlaceId(partition, centroid, token_info);
231 IF parent_place_id is not null THEN
232 {% if debug %}RAISE WARNING 'Get parent from addr:street: %', parent_place_id;{% endif %}
233 RETURN parent_place_id;
236 -- Check for addr:place attributes.
237 parent_place_id := getNearestNamedPlacePlaceId(partition, centroid, token_info);
238 {% if debug %}RAISE WARNING 'Get parent from addr:place: %', parent_place_id;{% endif %}
239 RETURN parent_place_id;
242 LANGUAGE plpgsql STABLE;
245 CREATE OR REPLACE FUNCTION delete_location(OLD_place_id BIGINT)
250 DELETE FROM location_area where place_id = OLD_place_id;
251 -- TODO:location_area
257 -- Create a bounding box with an extent computed from the radius (in meters)
258 -- which in turn is derived from the given search rank.
259 CREATE OR REPLACE FUNCTION place_node_fuzzy_area(geom GEOMETRY, rank_search INTEGER)
265 IF rank_search <= 16 THEN -- city
267 ELSIF rank_search <= 18 THEN -- town
269 ELSIF rank_search <= 19 THEN -- village
271 ELSIF rank_search <= 20 THEN -- hamlet
275 RETURN ST_Envelope(ST_Collect(
276 ST_Project(geom::geography, radius, 0.785398)::geometry,
277 ST_Project(geom::geography, radius, 3.9269908)::geometry));
280 LANGUAGE plpgsql IMMUTABLE;
283 CREATE OR REPLACE FUNCTION add_location(place_id BIGINT, country_code varchar(2),
284 partition INTEGER, keywords INTEGER[],
285 rank_search INTEGER, rank_address INTEGER,
286 in_postcode TEXT, geometry GEOMETRY,
295 PERFORM deleteLocationArea(partition, place_id, rank_search);
297 -- add postcode only if it contains a single entry, i.e. ignore postcode lists
299 IF in_postcode is not null AND in_postcode not similar to '%(,|;)%' THEN
300 postcode := upper(trim (in_postcode));
303 IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
304 FOR secgeo IN select split_geometry(geometry) AS geom LOOP
305 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, postcode, centroid, secgeo);
308 ELSEIF ST_GeometryType(geometry) = 'ST_Point' THEN
309 secgeo := place_node_fuzzy_area(geometry, rank_search);
310 PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, true, postcode, centroid, secgeo);
320 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT,
322 RETURNS SETOF GEOMETRY
336 remainingdepth INTEGER;
340 -- RAISE WARNING 'quad_split_geometry: maxarea=%, depth=%',maxarea,maxdepth;
342 IF (ST_GeometryType(geometry) not in ('ST_Polygon','ST_MultiPolygon') OR NOT ST_IsValid(geometry)) THEN
343 RETURN NEXT geometry;
347 remainingdepth := maxdepth - 1;
348 area := ST_AREA(geometry);
349 IF remainingdepth < 1 OR area < maxarea THEN
350 RETURN NEXT geometry;
354 xmin := st_xmin(geometry);
355 xmax := st_xmax(geometry);
356 ymin := st_ymin(geometry);
357 ymax := st_ymax(geometry);
358 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(ymin,xmin),ST_Point(ymax,xmax)),4326);
360 -- if the geometry completely covers the box don't bother to slice any more
361 IF ST_AREA(secbox) = area THEN
362 RETURN NEXT geometry;
366 xmid := (xmin+xmax)/2;
367 ymid := (ymin+ymax)/2;
373 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymin),ST_Point(xmid,ymid)),4326);
376 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymid),ST_Point(xmid,ymax)),4326);
379 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymin),ST_Point(xmax,ymid)),4326);
382 secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymid),ST_Point(xmax,ymax)),4326);
385 IF st_intersects(geometry, secbox) THEN
386 secgeo := st_intersection(geometry, secbox);
387 IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
388 FOR geo IN select quad_split_geometry(secgeo, maxarea, remainingdepth) as geom LOOP
389 IF NOT ST_IsEmpty(geo.geom) AND ST_GeometryType(geo.geom) in ('ST_Polygon','ST_MultiPolygon') THEN
391 RETURN NEXT geo.geom;
401 LANGUAGE plpgsql IMMUTABLE;
404 CREATE OR REPLACE FUNCTION split_geometry(geometry GEOMETRY)
405 RETURNS SETOF GEOMETRY
410 -- 10000000000 is ~~ 1x1 degree
411 FOR geo IN select quad_split_geometry(geometry, 0.25, 20) as geom LOOP
412 RETURN NEXT geo.geom;
417 LANGUAGE plpgsql IMMUTABLE;
420 CREATE OR REPLACE FUNCTION place_force_delete(placeid BIGINT)
425 osmtype character(1);
429 SELECT osm_type, osm_id, class, type FROM placex WHERE place_id = placeid INTO osmtype, osmid, pclass, ptype;
430 DELETE FROM import_polygon_delete where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
431 DELETE FROM import_polygon_error where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
432 -- force delete by directly entering it into the to-be-deleted table
433 INSERT INTO place_to_be_deleted (osm_type, osm_id, class, type, deferred)
434 VALUES(osmtype, osmid, pclass, ptype, false);
435 PERFORM flush_deleted_places();
443 CREATE OR REPLACE FUNCTION place_force_update(placeid BIGINT)
452 UPDATE placex SET indexed_status = 2 WHERE place_id = placeid;
454 SELECT geometry, rank_address INTO placegeom, rank
455 FROM placex WHERE place_id = placeid;
457 IF placegeom IS NOT NULL AND ST_IsValid(placegeom) THEN
458 IF ST_GeometryType(placegeom) in ('ST_Polygon','ST_MultiPolygon')
461 FOR geom IN SELECT split_geometry(placegeom) LOOP
462 UPDATE placex SET indexed_status = 2
463 WHERE ST_Intersects(geom, placex.geometry)
464 and indexed_status = 0
465 and ((rank_address = 0 and rank_search > rank) or rank_address > rank)
466 and (rank_search < 28 or name is not null or (rank >= 16 and address ? 'place'));
469 diameter := update_place_diameter(rank);
472 -- roads may cause reparenting for >27 rank places
473 update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter);
474 ELSEIF rank >= 16 THEN
475 -- up to rank 16, street-less addresses may need reparenting
476 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');
478 -- for all other places the search terms may change as well
479 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);