X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/f863040b38a6c7586c06623715f1010c268b1f37..ab9202b1c2de078822756d447e450610f0815692:/sql/functions/placex_triggers.sql

diff --git a/sql/functions/placex_triggers.sql b/sql/functions/placex_triggers.sql
index d6076356..9ef83b82 100644
--- a/sql/functions/placex_triggers.sql
+++ b/sql/functions/placex_triggers.sql
@@ -1,58 +1,18 @@
 -- Trigger functions for the placex table.
 
-CREATE OR REPLACE FUNCTION get_rel_node_members(members TEXT[], memberLabels TEXT[])
-  RETURNS SETOF BIGINT
-  AS $$
-DECLARE
-  i INTEGER;
-BEGIN
-  FOR i IN 1..ARRAY_UPPER(members,1) BY 2 LOOP
-    IF members[i+1] = ANY(memberLabels)
-       AND upper(substring(members[i], 1, 1))::char(1) = 'N'
-    THEN
-      RETURN NEXT substring(members[i], 2)::bigint;
-    END IF;
-  END LOOP;
-
-  RETURN;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
--- copy 'name' to or from the default language (if there is a default language)
-CREATE OR REPLACE FUNCTION add_default_place_name(country_code VARCHAR(2),
-                                                  INOUT name HSTORE)
-  AS $$
-DECLARE
-  default_language VARCHAR(10);
-BEGIN
-  IF name is not null AND array_upper(akeys(name),1) > 1 THEN
-    default_language := get_country_language_code(country_code);
-    IF default_language IS NOT NULL THEN
-      IF name ? 'name' AND NOT name ? ('name:'||default_language) THEN
-        name := name || hstore(('name:'||default_language), (name -> 'name'));
-      ELSEIF name ? ('name:'||default_language) AND NOT name ? 'name' THEN
-        name := name || hstore('name', (name -> ('name:'||default_language)));
-      END IF;
-    END IF;
-  END IF;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
 -- Find the parent road of a POI.
 --
 -- \returns Place ID of parent object or NULL if none
 --
 -- Copy data from linked items (POIs on ways, addr:street links, relations).
 --
-CREATE OR REPLACE FUNCTION find_parent_place_for_poi(poi_osm_type CHAR(1),
-                                                     poi_osm_id BIGINT,
-                                                     poi_partition SMALLINT,
-                                                     near_centroid GEOMETRY,
-                                                     addr_street TEXT,
-                                                     addr_place TEXT,
-                                                     fallback BOOL = true)
+CREATE OR REPLACE FUNCTION find_parent_for_poi(poi_osm_type CHAR(1),
+                                               poi_osm_id BIGINT,
+                                               poi_partition SMALLINT,
+                                               bbox GEOMETRY,
+                                               addr_street TEXT,
+                                               addr_place TEXT,
+                                               fallback BOOL = true)
   RETURNS BIGINT
   AS $$
 DECLARE
@@ -71,7 +31,6 @@ BEGIN
     LOOP
       FOR i IN 1..array_upper(location.members, 1) BY 2 LOOP
         IF location.members[i+1] = 'street' THEN
-          --DEBUG: RAISE WARNING 'node in relation %',relation;
           FOR parent IN
             SELECT place_id from placex
              WHERE osm_type = 'W' and osm_id = substring(location.members[i],2)::bigint
@@ -85,7 +44,7 @@ BEGIN
     END LOOP;
 
     parent_place_id := find_parent_for_address(addr_street, addr_place,
-                                               poi_partition, near_centroid);
+                                               poi_partition, bbox);
     IF parent_place_id is not null THEN
       RETURN parent_place_id;
     END IF;
@@ -95,7 +54,7 @@ BEGIN
       FOR parent IN
         SELECT q.parent_place_id
           FROM location_property_osmline q, planet_osm_ways x
-         WHERE q.linegeo && near_centroid and x.id = q.osm_id
+         WHERE q.linegeo && bbox and x.id = q.osm_id
                and poi_osm_id = any(x.nodes)
          LIMIT 1
       LOOP
@@ -109,7 +68,7 @@ BEGIN
                coalesce(p.centroid, ST_Centroid(p.geometry)) as centroid
           FROM placex p, planet_osm_ways w
          WHERE p.osm_type = 'W' and p.rank_search >= 26
-               and p.geometry && near_centroid
+               and p.geometry && bbox
                and w.id = p.osm_id and poi_osm_id = any(w.nodes)
       LOOP
         --DEBUG: RAISE WARNING 'Node is part of way % ', location.osm_id;
@@ -120,11 +79,11 @@ BEGIN
           return location.place_id;
         END IF;
 
-        SELECT find_parent_place_for_poi('W', location.osm_id, poi_partition,
-                                         location.centroid,
-                                         location.address->'street',
-                                         location.address->'place',
-                                         false)
+        SELECT find_parent_for_poi('W', location.osm_id, poi_partition,
+                                   location.centroid,
+                                   location.address->'street',
+                                   location.address->'place',
+                                   false)
           INTO parent_place_id;
         IF parent_place_id is not null THEN
           RETURN parent_place_id;
@@ -132,10 +91,34 @@ BEGIN
       END LOOP;
     END IF;
 
-    -- Still nothing, just use the nearest road
     IF fallback THEN
-      SELECT place_id FROM getNearestRoadFeature(poi_partition, near_centroid) INTO parent_place_id;
-      --DEBUG: RAISE WARNING 'Checked for nearest way (%)', parent_place_id;
+      IF addr_street is null and addr_place is not null THEN
+        -- The address is attached to a place we don't know.
+        -- Instead simply use the containing area with the largest rank.
+        FOR location IN
+          SELECT place_id FROM placex
+            WHERE bbox @ geometry AND _ST_Covers(geometry, ST_Centroid(bbox))
+                  AND rank_address between 5 and 25
+            ORDER BY rank_address desc
+        LOOP
+            RETURN location.place_id;
+        END LOOP;
+      ELSEIF ST_Area(bbox) < 0.005 THEN
+        -- for smaller features get the nearest road
+        SELECT getNearestRoadPlaceId(poi_partition, bbox) INTO parent_place_id;
+        --DEBUG: RAISE WARNING 'Checked for nearest way (%)', parent_place_id;
+      ELSE
+        -- for larger features simply find the area with the largest rank that
+        -- contains the bbox, only use addressable features
+        FOR location IN
+          SELECT place_id FROM placex
+            WHERE bbox @ geometry AND _ST_Covers(geometry, ST_Centroid(bbox))
+                  AND rank_address between 5 and 25
+            ORDER BY rank_address desc
+        LOOP
+            RETURN location.place_id;
+        END LOOP;
+      END IF;
     END IF;
 
     RETURN parent_place_id;
@@ -191,43 +174,50 @@ BEGIN
     END IF;
   END IF;
 
-  -- Search for relation members with role admin_center.
-  IF bnd.osm_type = 'R' and bnd_name is not null
-     and relation_members is not null THEN
-    FOR rel_member IN
-      SELECT get_rel_node_members(relation_members,
-                                ARRAY['admin_center','admin_centre']) as member
+  -- If extratags has a place tag, look for linked nodes by their place type.
+  -- Area and node still have to have the same name.
+  IF bnd.extratags ? 'place' and bnd_name is not null THEN
+    FOR linked_placex IN
+      SELECT * FROM placex
+      WHERE make_standard_name(name->'name') = bnd_name
+        AND placex.class = 'place' AND placex.type = bnd.extratags->'place'
+        AND placex.osm_type = 'N'
+        AND placex.rank_search < 26 -- needed to select the right index
+        AND _st_covers(bnd.geometry, placex.geometry)
     LOOP
-    --DEBUG: RAISE WARNING 'Found admin_center member %', rel_member.member;
-      FOR linked_placex IN
-        SELECT * from placex
-        WHERE osm_type = 'N' and osm_id = rel_member.member
-          and class = 'place'
-      LOOP
-        -- For an admin centre we also want a name match - still not perfect,
-        -- for example 'new york, new york'
-        -- But that can be fixed by explicitly setting the label in the data
-        IF bnd_name = make_standard_name(linked_placex.name->'name')
-           AND bnd.rank_address = linked_placex.rank_address
-        THEN
-          RETURN linked_placex;
-        END IF;
-          --DEBUG: RAISE WARNING 'Linked admin_center';
-      END LOOP;
+      --DEBUG: RAISE WARNING 'Found type-matching place node %', linked_placex.osm_id;
+      RETURN linked_placex;
+    END LOOP;
+  END IF;
+
+  IF bnd.extratags ? 'wikidata' THEN
+    FOR linked_placex IN
+      SELECT * FROM placex
+      WHERE placex.class = 'place' AND placex.osm_type = 'N'
+        AND placex.extratags ? 'wikidata' -- needed to select right index
+        AND placex.extratags->'wikidata' = bnd.extratags->'wikidata'
+        AND placex.rank_search < 26
+        AND _st_covers(bnd.geometry, placex.geometry)
+      ORDER BY make_standard_name(name->'name') = bnd_name desc
+    LOOP
+      --DEBUG: RAISE WARNING 'Found wikidata-matching place node %', linked_placex.osm_id;
+      RETURN linked_placex;
     END LOOP;
   END IF;
 
   -- Name searches can be done for ways as well as relations
-  IF bnd.osm_type in ('W','R') and bnd_name is not null THEN
+  IF bnd_name is not null THEN
     --DEBUG: RAISE WARNING 'Looking for nodes with matching names';
     FOR linked_placex IN
       SELECT placex.* from placex
       WHERE make_standard_name(name->'name') = bnd_name
-        AND placex.rank_address = bnd.rank_address
+        AND ((bnd.rank_address > 0 and placex.rank_address = bnd.rank_address)
+             OR (bnd.rank_address = 0 and placex.rank_search = bnd.rank_search))
         AND placex.osm_type = 'N'
-        AND st_covers(geometry, placex.geometry)
+        AND placex.rank_search < 26 -- needed to select the right index
+        AND _st_covers(bnd.geometry, placex.geometry)
     LOOP
-      --DEBUG: RAISE WARNING 'Found matching place node %', linkedPlacex.osm_id;
+      --DEBUG: RAISE WARNING 'Found matching place node %', linked_placex.osm_id;
       RETURN linked_placex;
     END LOOP;
   END IF;
@@ -235,20 +225,166 @@ BEGIN
   RETURN NULL;
 END;
 $$
+LANGUAGE plpgsql STABLE;
+
+
+-- Insert address of a place into the place_addressline table.
+--
+-- \param obj_place_id  Place_id of the place to compute the address for.
+-- \param partition     Partition number where the place is in.
+-- \param maxrank       Rank of the place. All address features must have
+--                      a search rank lower than the given rank.
+-- \param address       Address terms for the place.
+-- \param geometry      Geometry to which the address objects should be close.
+--
+-- \retval parent_place_id  Place_id of the address object that is the direct
+--                          ancestor.
+-- \retval postcode         Postcode computed from the address. This is the
+--                          addr:postcode of one of the address objects. If
+--                          more than one of has a postcode, the highest ranking
+--                          one is used. May be NULL.
+-- \retval nameaddress_vector  Search terms for the address. This is the sum
+--                             of name terms of all address objects.
+CREATE OR REPLACE FUNCTION insert_addresslines(obj_place_id BIGINT,
+                                               partition SMALLINT,
+                                               maxrank SMALLINT,
+                                               address HSTORE,
+                                               geometry GEOMETRY,
+                                               OUT parent_place_id BIGINT,
+                                               OUT postcode TEXT,
+                                               OUT nameaddress_vector INT[])
+  AS $$
+DECLARE
+  current_rank_address INTEGER := 0;
+  location_distance FLOAT := 0;
+  location_parent GEOMETRY := NULL;
+  parent_place_id_rank SMALLINT := 0;
+
+  location_isaddress BOOLEAN;
+
+  address_havelevel BOOLEAN[];
+  location_keywords INT[];
+
+  location RECORD;
+  addr_item RECORD;
+
+  isin_tokens INT[];
+  isin TEXT[];
+BEGIN
+  parent_place_id := 0;
+  nameaddress_vector := '{}'::int[];
+  isin_tokens := '{}'::int[];
+
+  ---- convert address store to array of tokenids
+  IF address IS NOT NULL THEN
+    FOR addr_item IN SELECT * FROM each(address)
+    LOOP
+      IF addr_item.key IN ('city', 'tiger:county', 'state', 'suburb', 'province',
+                           'district', 'region', 'county', 'municipality',
+                           'hamlet', 'village', 'subdistrict', 'town',
+                           'neighbourhood', 'quarter', 'parish')
+      THEN
+        isin_tokens := array_merge(isin_tokens,
+                                   word_ids_from_name(addr_item.value));
+        IF NOT %REVERSE-ONLY% THEN
+          nameaddress_vector := array_merge(nameaddress_vector,
+                                            addr_ids_from_name(addr_item.value));
+        END IF;
+      END IF;
+    END LOOP;
+  END IF;
+  IF NOT %REVERSE-ONLY% THEN
+    nameaddress_vector := array_merge(nameaddress_vector, isin_tokens);
+  END IF;
+
+  ---- now compute the address terms
+  FOR i IN 1..28 LOOP
+    address_havelevel[i] := false;
+  END LOOP;
+
+  FOR location IN
+    SELECT * FROM getNearFeatures(partition, geometry, maxrank, isin_tokens)
+  LOOP
+    IF location.rank_address != current_rank_address THEN
+      current_rank_address := location.rank_address;
+      IF location.isguess THEN
+        location_distance := location.distance * 1.5;
+      ELSE
+        IF location.rank_address <= 12 THEN
+          -- for county and above, if we have an area consider that exact
+          -- (It would be nice to relax the constraint for places close to
+          --  the boundary but we'd need the exact geometry for that. Too
+          --  expensive.)
+          location_distance = 0;
+        ELSE
+          -- Below county level remain slightly fuzzy.
+          location_distance := location.distance * 0.5;
+        END IF;
+      END IF;
+    ELSE
+      CONTINUE WHEN location.keywords <@ location_keywords;
+    END IF;
+
+    IF location.distance < location_distance OR NOT location.isguess THEN
+      location_keywords := location.keywords;
+
+      location_isaddress := NOT address_havelevel[location.rank_address];
+      --DEBUG: RAISE WARNING 'should be address: %, is guess: %, rank: %', location_isaddress, location.isguess, location.rank_address;
+      IF location_isaddress AND location.isguess AND location_parent IS NOT NULL THEN
+          location_isaddress := ST_Contains(location_parent, location.centroid);
+      END IF;
+
+      --DEBUG: RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;
+      -- Add it to the list of search terms
+      IF NOT %REVERSE-ONLY% THEN
+          nameaddress_vector := array_merge(nameaddress_vector,
+                                            location.keywords::integer[]);
+      END IF;
+
+      INSERT INTO place_addressline (place_id, address_place_id, fromarea,
+                                     isaddress, distance, cached_rank_address)
+        VALUES (obj_place_id, location.place_id, true,
+                location_isaddress, location.distance, location.rank_address);
+
+      IF location_isaddress THEN
+        -- add postcode if we have one
+        -- (If multiple postcodes are available, we end up with the highest ranking one.)
+        IF location.postcode is not null THEN
+            postcode = location.postcode;
+        END IF;
+
+        address_havelevel[location.rank_address] := true;
+        -- add a hack against postcode ranks
+        IF NOT location.isguess
+           AND location.rank_address != 11 AND location.rank_address != 5
+        THEN
+          SELECT p.geometry FROM placex p
+            WHERE p.place_id = location.place_id INTO location_parent;
+        END IF;
+
+        IF location.rank_address > parent_place_id_rank THEN
+          parent_place_id = location.place_id;
+          parent_place_id_rank = location.rank_address;
+        END IF;
+      END IF;
+    END IF;
+
+  END LOOP;
+END;
+$$
 LANGUAGE plpgsql;
 
+
 CREATE OR REPLACE FUNCTION placex_insert()
   RETURNS TRIGGER
   AS $$
 DECLARE
-  i INTEGER;
   postcode TEXT;
   result BOOLEAN;
   is_area BOOLEAN;
   country_code VARCHAR(2);
   diameter FLOAT;
   classtable TEXT;
-  classtype TEXT;
 BEGIN
   --DEBUG: RAISE WARNING '% % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
@@ -266,8 +402,8 @@ BEGIN
     is_area := ST_GeometryType(NEW.geometry) IN ('ST_Polygon','ST_MultiPolygon');
 
     IF NEW.class in ('place','boundary')
-       AND NEW.type in ('postcode','postal_code') THEN
-
+       AND NEW.type in ('postcode','postal_code')
+    THEN
       IF NEW.address IS NULL OR NOT NEW.address ? 'postcode' THEN
           -- most likely just a part of a multipolygon postcode boundary, throw it away
           RETURN NULL;
@@ -275,63 +411,33 @@ BEGIN
 
       NEW.name := hstore('ref', NEW.address->'postcode');
 
-      SELECT * FROM get_postcode_rank(NEW.country_code, NEW.address->'postcode')
-        INTO NEW.rank_search, NEW.rank_address;
-
-      IF NOT is_area THEN
-          NEW.rank_address := 0;
-      END IF;
-    ELSEIF NEW.class = 'boundary' AND NOT is_area THEN
-        return NULL;
+    ELSEIF NEW.class = 'highway' AND is_area AND NEW.name is null
+           AND NEW.extratags ? 'area' AND NEW.extratags->'area' = 'yes'
+    THEN
+        RETURN NULL;
+    ELSEIF NEW.class = 'boundary' AND NOT is_area
+    THEN
+        RETURN NULL;
     ELSEIF NEW.class = 'boundary' AND NEW.type = 'administrative'
-           AND NEW.admin_level <= 4 AND NEW.osm_type = 'W' THEN
-        return NULL;
-    ELSEIF NEW.osm_type = 'N' AND NEW.class = 'highway' THEN
-        NEW.rank_search = 30;
-        NEW.rank_address = 0;
-    ELSEIF NEW.class = 'landuse' AND NOT is_area THEN
-        NEW.rank_search = 30;
-        NEW.rank_address = 0;
-    ELSE
-      -- do table lookup stuff
-      IF NEW.class = 'boundary' and NEW.type = 'administrative' THEN
-        classtype = NEW.type || NEW.admin_level::TEXT;
-      ELSE
-        classtype = NEW.type;
-      END IF;
-      SELECT l.rank_search, l.rank_address FROM address_levels l
-       WHERE (l.country_code = NEW.country_code or l.country_code is NULL)
-             AND l.class = NEW.class AND (l.type = classtype or l.type is NULL)
-       ORDER BY l.country_code, l.class, l.type LIMIT 1
-        INTO NEW.rank_search, NEW.rank_address;
-
-      IF NEW.rank_search is NULL THEN
-        NEW.rank_search := 30;
-      END IF;
-
-      IF NEW.rank_address is NULL THEN
-        NEW.rank_address := 30;
-      END IF;
+           AND NEW.admin_level <= 4 AND NEW.osm_type = 'W'
+    THEN
+        RETURN NULL;
     END IF;
 
-    -- some postcorrections
-    IF NEW.class = 'waterway' AND NEW.osm_type = 'R' THEN
-        -- Slightly promote waterway relations so that they are processed
-        -- before their members.
-        NEW.rank_search := NEW.rank_search - 1;
-    END IF;
+    SELECT * INTO NEW.rank_search, NEW.rank_address
+      FROM compute_place_rank(NEW.country_code,
+                              CASE WHEN is_area THEN 'A' ELSE NEW.osm_type END,
+                              NEW.class, NEW.type, NEW.admin_level,
+                              (NEW.extratags->'capital') = 'yes',
+                              NEW.address->'postcode');
 
-    IF (NEW.extratags -> 'capital') = 'yes' THEN
-      NEW.rank_search := NEW.rank_search - 1;
+    -- a country code make no sense below rank 4 (country)
+    IF NEW.rank_search < 4 THEN
+      NEW.country_code := NULL;
     END IF;
 
   END IF;
 
-  -- a country code make no sense below rank 4 (country)
-  IF NEW.rank_search < 4 THEN
-    NEW.country_code := NULL;
-  END IF;
-
   --DEBUG: RAISE WARNING 'placex_insert:END: % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
   RETURN NEW; -- %DIFFUPDATES% The following is not needed until doing diff updates, and slows the main index process down
@@ -346,33 +452,20 @@ BEGIN
         -- mark items within the geometry for re-indexing
   --    RAISE WARNING 'placex poly insert: % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
-        -- work around bug in postgis, this may have been fixed in 2.0.0 (see http://trac.osgeo.org/postgis/ticket/547)
-        update placex set indexed_status = 2 where (st_covers(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry)) 
-         AND rank_search > NEW.rank_search and indexed_status = 0 and ST_geometrytype(placex.geometry) = 'ST_Point' and (rank_search < 28 or name is not null or (NEW.rank_search >= 16 and address ? 'place'));
-        update placex set indexed_status = 2 where (st_covers(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry)) 
-         AND rank_search > NEW.rank_search and indexed_status = 0 and ST_geometrytype(placex.geometry) != 'ST_Point' and (rank_search < 28 or name is not null or (NEW.rank_search >= 16 and address ? 'place'));
+        UPDATE placex SET indexed_status = 2
+         WHERE ST_Intersects(NEW.geometry, placex.geometry)
+               and indexed_status = 0
+               and ((rank_address = 0 and rank_search > NEW.rank_address)
+                    or rank_address > NEW.rank_address
+                    or (class = 'place' and osm_type = 'N')
+                   )
+               and (rank_search < 28
+                    or name is not null
+                    or (NEW.rank_address >= 16 and address ? 'place'));
       END IF;
     ELSE
       -- mark nearby items for re-indexing, where 'nearby' depends on the features rank_search and is a complete guess :(
-      diameter := 0;
-      -- 16 = city, anything higher than city is effectively ignored (polygon required!)
-      IF NEW.type='postcode' THEN
-        diameter := 0.05;
-      ELSEIF NEW.rank_search < 16 THEN
-        diameter := 0;
-      ELSEIF NEW.rank_search < 18 THEN
-        diameter := 0.1;
-      ELSEIF NEW.rank_search < 20 THEN
-        diameter := 0.05;
-      ELSEIF NEW.rank_search = 21 THEN
-        diameter := 0.001;
-      ELSEIF NEW.rank_search < 24 THEN
-        diameter := 0.02;
-      ELSEIF NEW.rank_search < 26 THEN
-        diameter := 0.002; -- 100 to 200 meters
-      ELSEIF NEW.rank_search < 28 THEN
-        diameter := 0.001; -- 50 to 100 meters
-      END IF;
+      diameter := update_place_diameter(NEW.rank_search);
       IF diameter > 0 THEN
   --      RAISE WARNING 'placex point insert: % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,diameter;
         IF NEW.rank_search >= 26 THEN
@@ -408,47 +501,53 @@ END;
 $$
 LANGUAGE plpgsql;
 
-
-CREATE OR REPLACE FUNCTION placex_update()
-  RETURNS TRIGGER
+CREATE OR REPLACE FUNCTION get_parent_address_level(geom GEOMETRY, in_level SMALLINT)
+  RETURNS SMALLINT
   AS $$
 DECLARE
+  address_rank SMALLINT;
+BEGIN
+  IF in_level <= 3 or in_level > 15 THEN
+    address_rank := 3;
+  ELSE
+    SELECT rank_address INTO address_rank
+      FROM placex
+      WHERE osm_type = 'R' and class = 'boundary' and type = 'administrative'
+            and admin_level < in_level
+            and geometry && geom and ST_Covers(geometry, geom)
+      ORDER BY admin_level desc LIMIT 1;
+  END IF;
 
-  near_centroid GEOMETRY;
+  IF address_rank is NULL or address_rank <= 3 THEN
+    RETURN 3;
+  END IF;
 
-  search_maxdistance FLOAT[];
-  search_mindistance FLOAT[];
-  address_havelevel BOOLEAN[];
+  RETURN address_rank;
+END;
+$$
+LANGUAGE plpgsql;
 
+
+CREATE OR REPLACE FUNCTION placex_update()
+  RETURNS TRIGGER
+  AS $$
+DECLARE
   i INTEGER;
-  iMax FLOAT;
   location RECORD;
-  way RECORD;
-  relation RECORD;
   relation_members TEXT[];
-  addr_item RECORD;
-  search_diameter FLOAT;
-  search_prevdiameter FLOAT;
-  search_maxrank INTEGER;
-  address_maxrank INTEGER;
-  address_street_word_id INTEGER;
-  address_street_word_ids INTEGER[];
-  parent_place_id_rank BIGINT;
+
+  centroid GEOMETRY;
+  parent_address_level SMALLINT;
+  place_address_level SMALLINT;
 
   addr_street TEXT;
   addr_place TEXT;
 
-  isin TEXT[];
-  isin_tokens INT[];
-
-  location_rank_search INTEGER;
-  location_distance FLOAT;
-  location_parent GEOMETRY;
-  location_isaddress BOOLEAN;
-  location_keywords INTEGER[];
-
   name_vector INTEGER[];
   nameaddress_vector INTEGER[];
+  addr_nameaddress_vector INTEGER[];
+
+  inherited_address HSTORE;
 
   linked_node_id BIGINT;
   linked_importance FLOAT;
@@ -482,11 +581,53 @@ BEGIN
          where linked_place_id = NEW.place_id;
   -- update not necessary for osmline, cause linked_place_id does not exist
 
+  NEW.extratags := NEW.extratags - 'linked_place'::TEXT;
+  NEW.address := NEW.address - '_unlisted_place'::TEXT;
+
   IF NEW.linked_place_id is not null THEN
     --DEBUG: RAISE WARNING 'place already linked to %', NEW.linked_place_id;
     RETURN NEW;
   END IF;
 
+  -- Postcodes are just here to compute the centroids. They are not searchable
+  -- unless they are a boundary=postal_code.
+  -- There was an error in the style so that boundary=postal_code used to be
+  -- imported as place=postcode. That's why relations are allowed to pass here.
+  -- This can go away in a couple of versions.
+  IF NEW.class = 'place'  and NEW.type = 'postcode' and NEW.osm_type != 'R' THEN
+    RETURN NEW;
+  END IF;
+
+  -- Speed up searches - just use the centroid of the feature
+  -- cheaper but less acurate
+  NEW.centroid := ST_PointOnSurface(NEW.geometry);
+  --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(NEW.centroid);
+
+  -- recompute the ranks, they might change when linking changes
+  SELECT * INTO NEW.rank_search, NEW.rank_address
+    FROM compute_place_rank(NEW.country_code,
+                            CASE WHEN ST_GeometryType(NEW.geometry)
+                                        IN ('ST_Polygon','ST_MultiPolygon')
+                            THEN 'A' ELSE NEW.osm_type END,
+                            NEW.class, NEW.type, NEW.admin_level,
+                            (NEW.extratags->'capital') = 'yes',
+                            NEW.address->'postcode');
+  -- We must always increase the address level relative to the admin boundary.
+  IF NEW.class = 'boundary' and NEW.type = 'administrative'
+     and NEW.osm_type = 'R' and NEW.rank_address > 0
+  THEN
+    parent_address_level := get_parent_address_level(NEW.centroid, NEW.admin_level);
+    IF parent_address_level >= NEW.rank_address THEN
+      IF parent_address_level >= 24 THEN
+        NEW.rank_address := 25;
+      ELSE
+        NEW.rank_address := parent_address_level + 2;
+      END IF;
+    END IF;
+  ELSE
+    parent_address_level := 3;
+  END IF;
+
   --DEBUG: RAISE WARNING 'Copy over address tags';
   -- housenumber is a computed field, so start with an empty value
   NEW.housenumber := NULL;
@@ -510,18 +651,12 @@ BEGIN
       addr_street := NEW.address->'street';
       addr_place := NEW.address->'place';
 
-      IF NEW.address ? 'postcode' and NEW.address->'postcode' not similar to '%(,|;)%' THEN
+      IF NEW.address ? 'postcode' and NEW.address->'postcode' not similar to '%(:|,|;)%' THEN
         i := getorcreate_postcode_id(NEW.address->'postcode');
       END IF;
   END IF;
 
-  -- Speed up searches - just use the centroid of the feature
-  -- cheaper but less acurate
-  NEW.centroid := ST_PointOnSurface(NEW.geometry);
-  -- For searching near features rather use the centroid
-  near_centroid := ST_Envelope(NEW.geometry);
   NEW.postcode := null;
-  --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(NEW.centroid);
 
   -- recalculate country and partition
   IF NEW.rank_search = 4 AND NEW.address is not NULL AND NEW.address ? 'country' THEN
@@ -557,6 +692,9 @@ BEGIN
                   and ( relation_members[i+1] != 'side_stream' or NEW.name->'name' = name->'name')
                 LOOP
                   UPDATE placex SET linked_place_id = NEW.place_id WHERE place_id = linked_node_id;
+                  IF NOT %REVERSE-ONLY% THEN
+                    DELETE FROM search_name WHERE place_id = linked_node_id;
+                  END IF;
                 END LOOP;
               END IF;
           END LOOP;
@@ -573,17 +711,21 @@ BEGIN
 
   -- ---------------------------------------------------------------------------
   -- For low level elements we inherit from our parent road
-  IF (NEW.rank_search > 27 OR (NEW.type = 'postcode' AND NEW.rank_search = 25)) THEN
+  IF NEW.rank_search > 27 THEN
 
     --DEBUG: RAISE WARNING 'finding street for % %', NEW.osm_type, NEW.osm_id;
     NEW.parent_place_id := null;
 
     -- if we have a POI and there is no address information,
     -- see if we can get it from a surrounding building
+    inherited_address := ''::HSTORE;
     IF NEW.osm_type = 'N' AND addr_street IS NULL AND addr_place IS NULL
        AND NEW.housenumber IS NULL THEN
       FOR location IN
+        -- The additional && condition works around the misguided query
+        -- planner of postgis 3.0.
         SELECT address from placex where ST_Covers(geometry, NEW.centroid)
+            and geometry && NEW.centroid
             and (address ? 'housenumber' or address ? 'street' or address ? 'place')
             and rank_search > 28 AND ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon')
             limit 1
@@ -591,24 +733,33 @@ BEGIN
         NEW.housenumber := location.address->'housenumber';
         addr_street := location.address->'street';
         addr_place := location.address->'place';
-        --DEBUG: RAISE WARNING 'Found surrounding building % %', location.osm_type, location.osm_id;
+        inherited_address := location.address;
       END LOOP;
     END IF;
 
     -- We have to find our parent road.
-    NEW.parent_place_id := find_parent_place_for_poi(NEW.osm_type, NEW.osm_id,
-                                                     NEW.partition,
-                                                     near_centroid, addr_street,
-                                                     addr_place);
+    NEW.parent_place_id := find_parent_for_poi(NEW.osm_type, NEW.osm_id,
+                                               NEW.partition,
+                                               ST_Envelope(NEW.geometry),
+                                               addr_street, addr_place);
 
     -- If we found the road take a shortcut here.
     -- Otherwise fall back to the full address getting method below.
     IF NEW.parent_place_id is not null THEN
 
       -- Get the details of the parent road
-      SELECT p.country_code, p.postcode FROM placex p
+      SELECT p.country_code, p.postcode, p.name FROM placex p
        WHERE p.place_id = NEW.parent_place_id INTO location;
 
+      IF addr_street is null and addr_place is not null THEN
+        -- Check if the addr:place tag is part of the parent name
+        SELECT count(*) INTO i
+          FROM svals(location.name) AS pname WHERE pname = addr_place;
+        IF i = 0 THEN
+          NEW.address = NEW.address || hstore('_unlisted_place', addr_place);
+        END IF;
+      END IF;
+
       NEW.country_code := location.country_code;
       --DEBUG: RAISE WARNING 'Got parent details from search name';
 
@@ -622,33 +773,26 @@ BEGIN
         NEW.postcode := get_nearest_postcode(NEW.country_code, NEW.geometry);
       END IF;
 
-      -- If there is no name it isn't searchable, don't bother to create a search record
-      IF NEW.name is NULL THEN
-        --DEBUG: RAISE WARNING 'Not a searchable place % %', NEW.osm_type, NEW.osm_id;
-        return NEW;
-      END IF;
+      IF NEW.name is not NULL THEN
+          NEW.name := add_default_place_name(NEW.country_code, NEW.name);
+          name_vector := make_keywords(NEW.name);
 
-      NEW.name := add_default_place_name(NEW.country_code, NEW.name);
-      name_vector := make_keywords(NEW.name);
+          IF NEW.rank_search <= 25 and NEW.rank_address > 0 THEN
+            result := add_location(NEW.place_id, NEW.country_code, NEW.partition,
+                                   name_vector, NEW.rank_search, NEW.rank_address,
+                                   upper(trim(NEW.address->'postcode')), NEW.geometry);
+            --DEBUG: RAISE WARNING 'Place added to location table';
+          END IF;
 
-      -- Performance, it would be more acurate to do all the rest of the import
-      -- process but it takes too long
-      -- Just be happy with inheriting from parent road only
-      IF NEW.rank_search <= 25 and NEW.rank_address > 0 THEN
-        result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, upper(trim(NEW.address->'postcode')), NEW.geometry);
-        --DEBUG: RAISE WARNING 'Place added to location table';
       END IF;
 
-      result := insertSearchName(NEW.partition, NEW.place_id, name_vector,
-                                 NEW.rank_search, NEW.rank_address, NEW.geometry);
-
       IF NOT %REVERSE-ONLY% THEN
-          -- Merge address from parent
-          SELECT array_merge(s.name_vector, s.nameaddress_vector)
-            INTO nameaddress_vector
-            FROM search_name s
-            WHERE s.place_id = NEW.parent_place_id;
+        SELECT * INTO name_vector, nameaddress_vector
+          FROM create_poi_search_terms(NEW.parent_place_id,
+                                       inherited_address || NEW.address,
+                                       NEW.housenumber, name_vector);
 
+        IF array_length(name_vector, 1) is not NULL THEN
           INSERT INTO search_name (place_id, search_rank, address_rank,
                                    importance, country_code, name_vector,
                                    nameaddress_vector, centroid)
@@ -657,8 +801,9 @@ BEGIN
                          nameaddress_vector, NEW.centroid);
           --DEBUG: RAISE WARNING 'Place added to search table';
         END IF;
+      END IF;
 
-      return NEW;
+      RETURN NEW;
     END IF;
 
   END IF;
@@ -668,11 +813,21 @@ BEGIN
   --DEBUG: RAISE WARNING 'Using full index mode for % %', NEW.osm_type, NEW.osm_id;
   SELECT * INTO location FROM find_linked_place(NEW);
   IF location.place_id is not null THEN
-      --DEBUG: RAISE WARNING 'Linked %', location;
+    --DEBUG: RAISE WARNING 'Linked %', location;
 
-    -- Use this as the centre point of the geometry
-    NEW.centroid := coalesce(location.centroid,
-                             ST_Centroid(location.geometry));
+    -- Use the linked point as the centre point of the geometry,
+    -- but only if it is within the area of the boundary.
+    centroid := coalesce(location.centroid, ST_Centroid(location.geometry));
+    IF centroid is not NULL AND ST_Within(centroid, NEW.geometry) THEN
+        NEW.centroid := centroid;
+    END IF;
+
+    --DEBUG: RAISE WARNING 'parent address: % rank address: %', parent_address_level, location.rank_address;
+    IF location.rank_address > parent_address_level
+       and location.rank_address < 26
+    THEN
+      NEW.rank_address := location.rank_address;
+    END IF;
 
     -- merge in the label name
     IF NOT location.name IS NULL THEN
@@ -680,13 +835,18 @@ BEGIN
     END IF;
 
     -- merge in extra tags
-    NEW.extratags := hstore(location.class, location.type)
+    NEW.extratags := hstore('linked_' || location.class, location.type)
                      || coalesce(location.extratags, ''::hstore)
                      || coalesce(NEW.extratags, ''::hstore);
 
     -- mark the linked place (excludes from search results)
     UPDATE placex set linked_place_id = NEW.place_id
       WHERE place_id = location.place_id;
+    -- ensure that those places are not found anymore
+    IF NOT %REVERSE-ONLY% THEN
+      DELETE FROM search_name WHERE place_id = location.place_id;
+    END IF;
+    PERFORM deleteLocationArea(NEW.partition, location.place_id, NEW.rank_search);
 
     SELECT wikipedia, importance
       FROM compute_importance(location.extratags, NEW.country_code,
@@ -699,15 +859,23 @@ BEGIN
     THEN
       NEW.importance = linked_importance;
     END IF;
+  ELSE
+    -- No linked place? As a last resort check if the boundary is tagged with
+    -- a place type and adapt the rank address.
+    IF NEW.rank_address > 0 and NEW.extratags ? 'place' THEN
+      SELECT address_rank INTO place_address_level
+        FROM compute_place_rank(NEW.country_code, 'A', 'place',
+                                NEW.extratags->'place', 0::SMALLINT, False, null);
+      IF place_address_level > parent_address_level and
+         place_address_level < 26 THEN
+        NEW.rank_address := place_address_level;
+      END IF;
+    END IF;
   END IF;
 
-  -- What level are we searching from
-  search_maxrank := NEW.rank_search;
-
   -- Initialise the name vector using our name
   NEW.name := add_default_place_name(NEW.country_code, NEW.name);
   name_vector := make_keywords(NEW.name);
-  nameaddress_vector := '{}'::int[];
 
   -- make sure all names are in the word table
   IF NEW.admin_level = 2
@@ -718,136 +886,16 @@ BEGIN
     --DEBUG: RAISE WARNING 'Country names updated';
   END IF;
 
-  FOR i IN 1..28 LOOP
-    address_havelevel[i] := false;
-  END LOOP;
-
-  NEW.parent_place_id = 0;
-  parent_place_id_rank = 0;
-
-
-  -- convert address store to array of tokenids
-  --DEBUG: RAISE WARNING 'Starting address search';
-  isin_tokens := '{}'::int[];
-  IF NEW.address IS NOT NULL THEN
-    FOR addr_item IN SELECT * FROM each(NEW.address)
-    LOOP
-      IF addr_item.key IN ('city', 'tiger:county', 'state', 'suburb', 'province', 'district', 'region', 'county', 'municipality', 'hamlet', 'village', 'subdistrict', 'town', 'neighbourhood', 'quarter', 'parish') THEN
-        address_street_word_id := get_name_id(make_standard_name(addr_item.value));
-        IF address_street_word_id IS NOT NULL AND NOT(ARRAY[address_street_word_id] <@ isin_tokens) THEN
-          isin_tokens := isin_tokens || address_street_word_id;
-        END IF;
-        IF NOT %REVERSE-ONLY% THEN
-          address_street_word_id := get_word_id(make_standard_name(addr_item.value));
-          IF address_street_word_id IS NOT NULL THEN
-            nameaddress_vector := array_merge(nameaddress_vector, ARRAY[address_street_word_id]);
-          END IF;
-        END IF;
-      END IF;
-      IF addr_item.key = 'is_in' THEN
-        -- is_in items need splitting
-        isin := regexp_split_to_array(addr_item.value, E'[;,]');
-        IF array_upper(isin, 1) IS NOT NULL THEN
-          FOR i IN 1..array_upper(isin, 1) LOOP
-            address_street_word_id := get_name_id(make_standard_name(isin[i]));
-            IF address_street_word_id IS NOT NULL AND NOT(ARRAY[address_street_word_id] <@ isin_tokens) THEN
-              isin_tokens := isin_tokens || address_street_word_id;
-            END IF;
-
-            -- merge word into address vector
-            IF NOT %REVERSE-ONLY% THEN
-              address_street_word_id := get_word_id(make_standard_name(isin[i]));
-              IF address_street_word_id IS NOT NULL THEN
-                nameaddress_vector := array_merge(nameaddress_vector, ARRAY[address_street_word_id]);
-              END IF;
-            END IF;
-          END LOOP;
-        END IF;
-      END IF;
-    END LOOP;
-  END IF;
-  IF NOT %REVERSE-ONLY% THEN
-    nameaddress_vector := array_merge(nameaddress_vector, isin_tokens);
-  END IF;
-
--- RAISE WARNING 'ISIN: %', isin_tokens;
-
-  -- Process area matches
-  location_rank_search := 0;
-  location_distance := 0;
-  location_parent := NULL;
-  -- added ourself as address already
-  address_havelevel[NEW.rank_address] := true;
-  --DEBUG: RAISE WARNING '  getNearFeatures(%,''%'',%,''%'')',NEW.partition, NEW.centroid, search_maxrank, isin_tokens;
-  FOR location IN
-    SELECT * from getNearFeatures(NEW.partition,
-                                  CASE WHEN NEW.rank_search >= 26
+  SELECT * FROM insert_addresslines(NEW.place_id, NEW.partition,
+                                    CASE WHEN NEW.rank_address = 0
+                                      THEN NEW.rank_search ELSE NEW.rank_address END,
+                                    NEW.address,
+                                    CASE WHEN NEW.rank_search >= 26
                                              AND NEW.rank_search < 30
-                                       THEN NEW.geometry
-                                       ELSE NEW.centroid END,
-                                  search_maxrank, isin_tokens)
-  LOOP
-    IF location.rank_address != location_rank_search THEN
-      location_rank_search := location.rank_address;
-      IF location.isguess THEN
-        location_distance := location.distance * 1.5;
-      ELSE
-        IF location.rank_address <= 12 THEN
-          -- for county and above, if we have an area consider that exact
-          -- (It would be nice to relax the constraint for places close to
-          --  the boundary but we'd need the exact geometry for that. Too
-          --  expensive.)
-          location_distance = 0;
-        ELSE
-          -- Below county level remain slightly fuzzy.
-          location_distance := location.distance * 0.5;
-        END IF;
-      END IF;
-    ELSE
-      CONTINUE WHEN location.keywords <@ location_keywords;
-    END IF;
-
-    IF location.distance < location_distance OR NOT location.isguess THEN
-      location_keywords := location.keywords;
-
-      location_isaddress := NOT address_havelevel[location.rank_address];
-      IF location_isaddress AND location.isguess AND location_parent IS NOT NULL THEN
-          location_isaddress := ST_Contains(location_parent,location.centroid);
-      END IF;
+                                      THEN NEW.geometry ELSE NEW.centroid END)
+    INTO NEW.parent_place_id, NEW.postcode, nameaddress_vector;
 
-      -- RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;
-      -- Add it to the list of search terms
-      IF NOT %REVERSE-ONLY% THEN
-          nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);
-      END IF;
-      INSERT INTO place_addressline (place_id, address_place_id, fromarea, isaddress, distance, cached_rank_address)
-        VALUES (NEW.place_id, location.place_id, true, location_isaddress, location.distance, location.rank_address);
-
-      IF location_isaddress THEN
-        -- add postcode if we have one
-        -- (If multiple postcodes are available, we end up with the highest ranking one.)
-        IF location.postcode is not null THEN
-            NEW.postcode = location.postcode;
-        END IF;
-
-        address_havelevel[location.rank_address] := true;
-        IF NOT location.isguess THEN
-          SELECT geometry FROM placex WHERE place_id = location.place_id INTO location_parent;
-        END IF;
-
-        IF location.rank_address > parent_place_id_rank THEN
-          NEW.parent_place_id = location.place_id;
-          parent_place_id_rank = location.rank_address;
-        END IF;
-
-      END IF;
-
-    --DEBUG: RAISE WARNING '  Terms: (%) %',location, nameaddress_vector;
-
-    END IF;
-
-  END LOOP;
-  --DEBUG: RAISE WARNING 'address computed';
+  --DEBUG: RAISE WARNING 'RETURN insert_addresslines: %, %, %', NEW.parent_place_id, NEW.postcode, nameaddress_vector;
 
   IF NEW.address is not null AND NEW.address ? 'postcode' 
      AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
@@ -903,10 +951,14 @@ DECLARE
 BEGIN
   -- RAISE WARNING 'placex_delete % %',OLD.osm_type,OLD.osm_id;
 
-  update placex set linked_place_id = null, indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;
-  --DEBUG: RAISE WARNING 'placex_delete:01 % %',OLD.osm_type,OLD.osm_id;
-  update placex set linked_place_id = null where linked_place_id = OLD.place_id;
-  --DEBUG: RAISE WARNING 'placex_delete:02 % %',OLD.osm_type,OLD.osm_id;
+  IF OLD.linked_place_id is null THEN
+    update placex set linked_place_id = null, indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;
+    --DEBUG: RAISE WARNING 'placex_delete:01 % %',OLD.osm_type,OLD.osm_id;
+    update placex set linked_place_id = null where linked_place_id = OLD.place_id;
+    --DEBUG: RAISE WARNING 'placex_delete:02 % %',OLD.osm_type,OLD.osm_id;
+  ELSE
+    update placex set indexed_status = 2 where place_id = OLD.linked_place_id and indexed_status = 0;
+  END IF;
 
   IF OLD.rank_address < 30 THEN
 
