X-Git-Url: https://git.openstreetmap.org/nominatim.git/blobdiff_plain/9b7f0627eabba2aaeaf5d31b8a36a7dc2ff8d45a..0ef64258470a5665b20122a75cbac1bb8cc7121c:/sql/functions.sql

diff --git a/sql/functions.sql b/sql/functions.sql
index 024d1caa..908236b1 100644
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -22,215 +22,6 @@ END;
 $$
 LANGUAGE plpgsql IMMUTABLE;
 
-CREATE OR REPLACE FUNCTION transliteration(text) RETURNS text
-  AS '{modulepath}/nominatim.so', 'transliteration'
-LANGUAGE c IMMUTABLE STRICT;
-
-CREATE OR REPLACE FUNCTION gettokenstring(text) RETURNS text
-  AS '{modulepath}/nominatim.so', 'gettokenstring'
-LANGUAGE c IMMUTABLE STRICT;
-
-CREATE OR REPLACE FUNCTION make_standard_name(name TEXT) RETURNS TEXT
-  AS $$
-DECLARE
-  o TEXT;
-BEGIN
-  o := public.gettokenstring(public.transliteration(name));
-  RETURN trim(substr(o,1,length(o)));
-END;
-$$
-LANGUAGE 'plpgsql' IMMUTABLE;
-
--- returns NULL if the word is too common
-CREATE OR REPLACE FUNCTION getorcreate_word_id(lookup_word TEXT) 
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-  count INTEGER;
-BEGIN
-  lookup_token := trim(lookup_word);
-  SELECT min(word_id), max(search_name_count) FROM word WHERE word_token = lookup_token and class is null and type is null into return_word_id, count;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, null, null, null, null, 0);
-  ELSE
-    IF count > get_maxwordfreq() THEN
-      return_word_id := NULL;
-    END IF;
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_housenumber_id(lookup_word TEXT)
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and class='place' and type='house' into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, null, 'place', 'house', null, 0);
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_postcode_id(postcode TEXT)
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  lookup_word TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_word := upper(trim(postcode));
-  lookup_token := ' ' || make_standard_name(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and class='place' and type='postcode' into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, lookup_word, 'place', 'postcode', null, 0);
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_country(lookup_word TEXT, lookup_country_code varchar(2))
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and country_code=lookup_country_code into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, null, null, null, lookup_country_code, 0);
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_amenity(lookup_word TEXT, normalized_word TEXT, lookup_class text, lookup_type text)
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and word=normalized_word and class=lookup_class and type = lookup_type into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, normalized_word, lookup_class, lookup_type, null, 0);
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_amenityoperator(lookup_word TEXT, normalized_word TEXT, lookup_class text, lookup_type text, op text)
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and word=normalized_word and class=lookup_class and type = lookup_type and operator = op into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, normalized_word, lookup_class, lookup_type, null, 0, op);
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_name_id(lookup_word TEXT, src_word TEXT) 
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  nospace_lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and class is null and type is null into return_word_id;
-  IF return_word_id IS NULL THEN
-    return_word_id := nextval('seq_word');
-    INSERT INTO word VALUES (return_word_id, lookup_token, src_word, null, null, null, 0);
---    nospace_lookup_token := replace(replace(lookup_token, '-',''), ' ','');
---    IF ' '||nospace_lookup_token != lookup_token THEN
---      INSERT INTO word VALUES (return_word_id, '-'||nospace_lookup_token, null, src_word, null, null, null, 0, null);
---    END IF;
-  END IF;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION getorcreate_name_id(lookup_word TEXT) 
-  RETURNS INTEGER
-  AS $$
-DECLARE
-BEGIN
-  RETURN getorcreate_name_id(lookup_word, '');
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION get_word_id(lookup_word TEXT) 
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and class is null and type is null into return_word_id;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
-CREATE OR REPLACE FUNCTION get_name_id(lookup_word TEXT) 
-  RETURNS INTEGER
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_id INTEGER;
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT min(word_id) FROM word WHERE word_token = lookup_token and class is null and type is null into return_word_id;
-  RETURN return_word_id;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
-CREATE OR REPLACE FUNCTION get_name_ids(lookup_word TEXT)
-  RETURNS INTEGER[]
-  AS $$
-DECLARE
-  lookup_token TEXT;
-  return_word_ids INTEGER[];
-BEGIN
-  lookup_token := ' '||trim(lookup_word);
-  SELECT array_agg(word_id) FROM word WHERE word_token = lookup_token and class is null and type is null into return_word_ids;
-  RETURN return_word_ids;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION array_merge(a INTEGER[], b INTEGER[])
   RETURNS INTEGER[]
@@ -371,171 +162,6 @@ $$
 LANGUAGE plpgsql;
 
 
-CREATE OR REPLACE FUNCTION create_country(src HSTORE, lookup_country_code varchar(2)) RETURNS VOID
-  AS $$
-DECLARE
-  s TEXT;
-  w INTEGER;
-  words TEXT[];
-  item RECORD;
-  j INTEGER;
-BEGIN
-  FOR item IN SELECT (each(src)).* LOOP
-
-    s := make_standard_name(item.value);
-    w := getorcreate_country(s, lookup_country_code);
-
-    words := regexp_split_to_array(item.value, E'[,;()]');
-    IF array_upper(words, 1) != 1 THEN
-      FOR j IN 1..array_upper(words, 1) LOOP
-        s := make_standard_name(words[j]);
-        IF s != '' THEN
-          w := getorcreate_country(s, lookup_country_code);
-        END IF;
-      END LOOP;
-    END IF;
-  END LOOP;
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION make_keywords(src HSTORE) RETURNS INTEGER[]
-  AS $$
-DECLARE
-  result INTEGER[];
-  s TEXT;
-  w INTEGER;
-  words TEXT[];
-  item RECORD;
-  j INTEGER;
-BEGIN
-  result := '{}'::INTEGER[];
-
-  FOR item IN SELECT (each(src)).* LOOP
-
-    s := make_standard_name(item.value);
-
-    w := getorcreate_name_id(s, item.value);
-
-    IF not(ARRAY[w] <@ result) THEN
-      result := result || w;
-    END IF;
-
-    w := getorcreate_word_id(s);
-
-    IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-      result := result || w;
-    END IF;
-
-    words := string_to_array(s, ' ');
-    IF array_upper(words, 1) IS NOT NULL THEN
-      FOR j IN 1..array_upper(words, 1) LOOP
-        IF (words[j] != '') THEN
-          w = getorcreate_word_id(words[j]);
-          IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-            result := result || w;
-          END IF;
-        END IF;
-      END LOOP;
-    END IF;
-
-    words := regexp_split_to_array(item.value, E'[,;()]');
-    IF array_upper(words, 1) != 1 THEN
-      FOR j IN 1..array_upper(words, 1) LOOP
-        s := make_standard_name(words[j]);
-        IF s != '' THEN
-          w := getorcreate_word_id(s);
-          IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-            result := result || w;
-          END IF;
-        END IF;
-      END LOOP;
-    END IF;
-
-    s := regexp_replace(item.value, '市$', '');
-    IF s != item.value THEN
-      s := make_standard_name(s);
-      IF s != '' THEN
-        w := getorcreate_name_id(s, item.value);
-        IF NOT (ARRAY[w] <@ result) THEN
-          result := result || w;
-        END IF;
-      END IF;
-    END IF;
-
-  END LOOP;
-
-  RETURN result;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
-CREATE OR REPLACE FUNCTION make_keywords(src TEXT) RETURNS INTEGER[]
-  AS $$
-DECLARE
-  result INTEGER[];
-  s TEXT;
-  w INTEGER;
-  words TEXT[];
-  i INTEGER;
-  j INTEGER;
-BEGIN
-  result := '{}'::INTEGER[];
-
-  s := make_standard_name(src);
-  w := getorcreate_name_id(s, src);
-
-  IF NOT (ARRAY[w] <@ result) THEN
-    result := result || w;
-  END IF;
-
-  w := getorcreate_word_id(s);
-
-  IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-    result := result || w;
-  END IF;
-
-  words := string_to_array(s, ' ');
-  IF array_upper(words, 1) IS NOT NULL THEN
-    FOR j IN 1..array_upper(words, 1) LOOP
-      IF (words[j] != '') THEN
-        w = getorcreate_word_id(words[j]);
-        IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-          result := result || w;
-        END IF;
-      END IF;
-    END LOOP;
-  END IF;
-
-  words := regexp_split_to_array(src, E'[,;()]');
-  IF array_upper(words, 1) != 1 THEN
-    FOR j IN 1..array_upper(words, 1) LOOP
-      s := make_standard_name(words[j]);
-      IF s != '' THEN
-        w := getorcreate_word_id(s);
-        IF w IS NOT NULL AND NOT (ARRAY[w] <@ result) THEN
-          result := result || w;
-        END IF;
-      END IF;
-    END LOOP;
-  END IF;
-
-  s := regexp_replace(src, '市$', '');
-  IF s != src THEN
-    s := make_standard_name(s);
-    IF s != '' THEN
-      w := getorcreate_name_id(s, src);
-      IF NOT (ARRAY[w] <@ result) THEN
-        result := result || w;
-      END IF;
-    END IF;
-  END IF;
-
-  RETURN result;
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
 CREATE OR REPLACE FUNCTION get_country_code(place geometry) RETURNS TEXT
   AS $$
 DECLARE
@@ -547,7 +173,7 @@ BEGIN
 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
 
   -- Try for a OSM polygon
-  FOR nearcountry IN select country_code from location_area_country where country_code is not null and not isguess and st_covers(geometry, place_centre) limit 1
+  FOR nearcountry IN select country_code from location_area_country where country_code is not null and st_covers(geometry, place_centre) limit 1
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
@@ -561,14 +187,6 @@ BEGIN
     RETURN nearcountry.country_code;
   END LOOP;
 
--- RAISE WARNING 'natural earth: %', ST_AsText(place_centre);
-
-  -- Natural earth data
-  FOR nearcountry IN select country_code from country_naturalearthdata where st_covers(geometry, place_centre) limit 1
-  LOOP
-    RETURN nearcountry.country_code;
-  END LOOP;
-
 -- RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
 
   -- 
@@ -577,14 +195,6 @@ BEGIN
     RETURN nearcountry.country_code;
   END LOOP;
 
--- RAISE WARNING 'near natural earth: %', ST_AsText(place_centre);
-
-  -- Natural earth data 
-  FOR nearcountry IN select country_code from country_naturalearthdata where st_dwithin(geometry, place_centre, 0.5) limit 1
-  LOOP
-    RETURN nearcountry.country_code;
-  END LOOP;
-
   RETURN NULL;
 END;
 $$
@@ -784,6 +394,28 @@ END;
 $$
 LANGUAGE plpgsql;
 
+CREATE OR REPLACE FUNCTION osmline_reinsert(node_id BIGINT, geom GEOMETRY)
+  RETURNS BOOLEAN
+  AS $$
+DECLARE
+  existingline RECORD;
+BEGIN
+   SELECT w.id FROM planet_osm_ways w, location_property_osmline p
+     WHERE p.linegeo && geom and p.osm_id = w.id and p.indexed_status = 0
+           and node_id = any(w.nodes) INTO existingline;
+
+   IF existingline.id is not NULL THEN
+       DELETE FROM location_property_osmline WHERE osm_id = existingline.id;
+       INSERT INTO location_property_osmline (osm_id, address, linegeo)
+         SELECT osm_id, address, geometry FROM place
+           WHERE osm_type = 'W' and osm_id = existingline.id;
+   END IF;
+
+   RETURN true;
+END;
+$$
+LANGUAGE plpgsql;
+
 
 CREATE OR REPLACE FUNCTION osmline_insert() RETURNS TRIGGER
   AS $$
@@ -817,11 +449,12 @@ DECLARE
   i INTEGER;
   postcode TEXT;
   result BOOLEAN;
+  is_area BOOLEAN;
   country_code VARCHAR(2);
   default_language VARCHAR(10);
   diameter FLOAT;
   classtable TEXT;
-  line RECORD;
+  classtype TEXT;
 BEGIN
   --DEBUG: RAISE WARNING '% % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
@@ -848,144 +481,70 @@ BEGIN
   IF NEW.osm_type = 'X' THEN
     -- E'X'ternal records should already be in the right format so do nothing
   ELSE
-    NEW.rank_search := 30;
-    NEW.rank_address := NEW.rank_search;
+    is_area := ST_GeometryType(NEW.geometry) IN ('ST_Polygon','ST_MultiPolygon');
 
-    -- By doing in postgres we have the country available to us - currently only used for postcode
-    IF NEW.class in ('place','boundary') AND NEW.type in ('postcode','postal_code') THEN
+    IF NEW.class in ('place','boundary')
+       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;
-        END IF;
+      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;
+      END IF;
 
-        NEW.name := hstore('ref', NEW.address->'postcode');
+      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;
+      SELECT * FROM get_postcode_rank(NEW.country_code, NEW.address->'postcode')
+        INTO NEW.rank_search, NEW.rank_address;
 
-        IF NOT ST_GeometryType(NEW.geometry) IN ('ST_Polygon','ST_MultiPolygon') THEN
-            NEW.rank_address := 0;
-        END IF;
-
-    ELSEIF NEW.class = 'place' THEN
-      IF NEW.type in ('continent') THEN
-        NEW.rank_search := 2;
-        NEW.rank_address := NEW.rank_search;
-        NEW.country_code := NULL;
-      ELSEIF NEW.type in ('sea') THEN
-        NEW.rank_search := 2;
-        NEW.rank_address := 0;
-        NEW.country_code := NULL;
-      ELSEIF NEW.type in ('country') THEN
-        NEW.rank_search := 4;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('state') THEN
-        NEW.rank_search := 8;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('region') THEN
-        NEW.rank_search := 18; -- dropped from previous value of 10
-        NEW.rank_address := 0; -- So badly miss-used that better to just drop it!
-      ELSEIF NEW.type in ('county') THEN
-        NEW.rank_search := 12;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('city') THEN
-        NEW.rank_search := 16;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('island') THEN
-        NEW.rank_search := 17;
-        NEW.rank_address := 0;
-      ELSEIF NEW.type in ('town') THEN
-        NEW.rank_search := 18;
-        NEW.rank_address := 16;
-      ELSEIF NEW.type in ('village','hamlet','municipality','district','unincorporated_area','borough') THEN
-        NEW.rank_search := 19;
-        NEW.rank_address := 16;
-      ELSEIF NEW.type in ('suburb','croft','subdivision','isolated_dwelling') THEN
-        NEW.rank_search := 20;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('farm','locality','islet','mountain_pass') THEN
-        NEW.rank_search := 20;
-        NEW.rank_address := 0;
-        -- Irish townlands, tagged as place=locality and locality=townland
-        IF (NEW.extratags -> 'locality') = 'townland' THEN
-          NEW.rank_address := 20;
-        END IF;
-      ELSEIF NEW.type in ('neighbourhood') THEN
-        NEW.rank_search := 22;
-        NEW.rank_address := 22;
-      ELSEIF NEW.type in ('house','building') THEN
-        NEW.rank_search := 30;
-        NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('houses') THEN
-        -- can't guarantee all required nodes loaded yet due to caching in osm2pgsql
-        NEW.rank_search := 28;
-        NEW.rank_address := 0;
+      IF NOT is_area THEN
+          NEW.rank_address := 0;
       END IF;
-
-    ELSEIF NEW.class = 'boundary' THEN
-      IF ST_GeometryType(NEW.geometry) NOT IN ('ST_Polygon','ST_MultiPolygon') THEN
---        RAISE WARNING 'invalid boundary %',NEW.osm_id;
+    ELSEIF NEW.class = 'boundary' AND NOT is_area THEN
         return NULL;
-      END IF;
-      NEW.rank_search := NEW.admin_level * 2;
-      IF NEW.type = 'administrative' THEN
-        NEW.rank_address := NEW.rank_search;
+    ELSEIF NEW.class = 'boundary' AND NEW.type = 'administrative'
+           AND NEW.admin_level <= 4 AND NEW.osm_type = 'W' THEN
+        return NULL;
+    ELSEIF NEW.class = 'railway' AND NEW.type in ('rail') 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
-        NEW.rank_address := 0;
+        classtype = NEW.type;
       END IF;
-    ELSEIF NEW.class = 'landuse' AND ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
-      NEW.rank_search := 22;
-      IF NEW.type in ('residential', 'farm', 'farmyard', 'industrial', 'commercial', 'allotments', 'retail') THEN
-        NEW.rank_address := NEW.rank_search;
-      ELSE
-        NEW.rank_address := 0;
+      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;
-    ELSEIF NEW.class = 'leisure' and NEW.type in ('park') THEN
-      NEW.rank_search := 24;
-      NEW.rank_address := 0;
-    ELSEIF NEW.class = 'natural' and NEW.type in ('peak','volcano','mountain_range') THEN
-      NEW.rank_search := 18;
-      NEW.rank_address := 0;
-    ELSEIF NEW.class = 'natural' and NEW.type = 'sea' THEN
-      NEW.rank_search := 4;
-      NEW.rank_address := NEW.rank_search;
-    -- any feature more than 5 square miles is probably worth indexing
-    ELSEIF ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_Area(NEW.geometry) > 0.1 THEN
-      NEW.rank_search := 22;
-      NEW.rank_address := 0;
-    ELSEIF NEW.class = 'railway' AND NEW.type in ('rail') THEN
-      RETURN NULL;
-    ELSEIF NEW.class = 'waterway' THEN
-      IF NEW.osm_type = 'R' THEN
-        NEW.rank_search := 16;
-      ELSE
-        NEW.rank_search := 17;
+
+      IF NEW.rank_address is NULL THEN
+        NEW.rank_address := 30;
       END IF;
-      NEW.rank_address := 0;
-    ELSEIF NEW.class = 'highway' AND NEW.osm_type != 'N' AND NEW.type in ('service','cycleway','path','footway','steps','bridleway','motorway_link','primary_link','trunk_link','secondary_link','tertiary_link') THEN
-      NEW.rank_search := 27;
-      NEW.rank_address := NEW.rank_search;
-    ELSEIF NEW.class = 'highway' AND NEW.osm_type != 'N' THEN
-      NEW.rank_search := 26;
-      NEW.rank_address := NEW.rank_search;
-    ELSEIF NEW.class = 'mountain_pass' THEN
-        NEW.rank_search := 20;
-        NEW.rank_address := 0;
     END IF;
 
-  END IF;
-
-  IF NEW.rank_search > 30 THEN
-    NEW.rank_search := 30;
-  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;
 
-  IF NEW.rank_address > 30 THEN
-    NEW.rank_address := 30;
-  END IF;
+    IF (NEW.extratags -> 'capital') = 'yes' THEN
+      NEW.rank_search := NEW.rank_search - 1;
+    END IF;
 
-  IF (NEW.extratags -> 'capital') = 'yes' THEN
-    NEW.rank_search := NEW.rank_search - 1;
   END IF;
 
   -- a country code make no sense below rank 4 (country)
@@ -993,16 +552,14 @@ BEGIN
     NEW.country_code := NULL;
   END IF;
 
--- Block import below rank 22
---  IF NEW.rank_search > 22 THEN
---    RETURN 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
 
-  IF NEW.rank_address > 0 THEN
+  IF NEW.osm_type = 'N' and NEW.rank_search > 28 THEN
+      -- might be part of an interpolation
+      result := osmline_reinsert(NEW.osm_id, NEW.geometry);
+  ELSEIF NEW.rank_address > 0 THEN
     IF (ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_IsValid(NEW.geometry)) THEN
       -- Performance: We just can't handle re-indexing for country level changes
       IF st_area(NEW.geometry) < 1 THEN
@@ -1247,6 +804,7 @@ TRIGGER
 DECLARE
 
   place_centroid GEOMETRY;
+  near_centroid GEOMETRY;
 
   search_maxdistance FLOAT[];
   search_mindistance FLOAT[];
@@ -1306,6 +864,9 @@ BEGIN
 
   NEW.indexed_date = now();
 
+  IF NOT %REVERSE-ONLY% THEN
+    DELETE from search_name WHERE place_id = NEW.place_id;
+  END IF;
   result := deleteSearchName(NEW.partition, NEW.place_id);
   DELETE FROM place_addressline WHERE place_id = NEW.place_id;
   result := deleteRoad(NEW.partition, NEW.place_id);
@@ -1320,6 +881,8 @@ BEGIN
   END IF;
 
   --DEBUG: RAISE WARNING 'Copy over address tags';
+  -- housenumber is a computed field, so start with an empty value
+  NEW.housenumber := NULL;
   IF NEW.address is not NULL THEN
       IF NEW.address ? 'conscriptionnumber' THEN
         i := getorcreate_housenumber_id(make_standard_name(NEW.address->'conscriptionnumber'));
@@ -1348,6 +911,8 @@ BEGIN
   -- Speed up searches - just use the centroid of the feature
   -- cheaper but less acurate
   place_centroid := ST_PointOnSurface(NEW.geometry);
+  -- For searching near features rather use the centroid
+  near_centroid := ST_Envelope(NEW.geometry);
   NEW.centroid := null;
   NEW.postcode := null;
   --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(place_centroid);
@@ -1393,10 +958,6 @@ BEGIN
       --DEBUG: RAISE WARNING 'Waterway processed';
   END IF;
 
-  -- Adding ourselves to the list simplifies address calculations later
-  INSERT INTO place_addressline (place_id, address_place_id, fromarea, isaddress, distance, cached_rank_address)
-    VALUES (NEW.place_id, NEW.place_id, true, true, 0, NEW.rank_address); 
-
   -- What level are we searching from
   search_maxrank := NEW.rank_search;
 
@@ -1423,10 +984,9 @@ BEGIN
   END LOOP;
 
   NEW.importance := null;
-  select language||':'||title,importance from get_wikipedia_match(NEW.extratags, NEW.country_code) INTO NEW.wikipedia,NEW.importance;
-  IF NEW.importance IS NULL THEN
-    select language||':'||title,importance from wikipedia_article where osm_type = NEW.osm_type and osm_id = NEW.osm_id order by importance desc limit 1 INTO NEW.wikipedia,NEW.importance;
-  END IF;
+  SELECT wikipedia, importance
+    FROM compute_importance(NEW.extratags, NEW.country_code, NEW.osm_type, NEW.osm_id)
+    INTO NEW.wikipedia,NEW.importance;
 
 --DEBUG: RAISE WARNING 'Importance computed from wikipedia: %', NEW.importance;
 
@@ -1482,7 +1042,7 @@ BEGIN
     IF NEW.parent_place_id IS NULL AND addr_street IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_street));
       IF address_street_word_ids IS NOT NULL THEN
-        SELECT place_id from getNearestNamedRoadFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+        SELECT place_id from getNearestNamedRoadFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;
       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:street (%)', NEW.parent_place_id;
@@ -1490,7 +1050,7 @@ BEGIN
     IF NEW.parent_place_id IS NULL AND addr_place IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_place));
       IF address_street_word_ids IS NOT NULL THEN
-        SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+        SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;
       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:place (%)', NEW.parent_place_id;
@@ -1525,7 +1085,7 @@ BEGIN
           IF location.address ? 'street' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'street'));
             IF address_street_word_ids IS NOT NULL THEN
-              SELECT place_id from getNearestNamedRoadFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+              SELECT place_id from getNearestNamedRoadFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;
               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;
@@ -1534,7 +1094,7 @@ BEGIN
           IF location.address ? 'place' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'place'));
             IF address_street_word_ids IS NOT NULL THEN
-              SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+              SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;
               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;
@@ -1563,7 +1123,7 @@ BEGIN
 
     -- Still nothing, just use the nearest road
     IF NEW.parent_place_id IS NULL THEN
-      SELECT place_id FROM getNearestRoadFeature(NEW.partition, place_centroid) INTO NEW.parent_place_id;
+      SELECT place_id FROM getNearestRoadFeature(NEW.partition, near_centroid) INTO NEW.parent_place_id;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for nearest way (%)', NEW.parent_place_id;
 
@@ -1572,8 +1132,9 @@ BEGIN
     IF NEW.parent_place_id IS NOT NULL THEN
 
       -- Get the details of the parent road
-      select s.country_code, s.name_vector, s.nameaddress_vector from search_name s
-       where s.place_id = NEW.parent_place_id INTO location;
+      SELECT p.country_code, p.postcode FROM placex p
+       WHERE p.place_id = NEW.parent_place_id INTO location;
+
       NEW.country_code := location.country_code;
       --DEBUG: RAISE WARNING 'Got parent details from search name';
 
@@ -1582,10 +1143,10 @@ BEGIN
           IF NEW.address is not null AND NEW.address ? 'postcode' THEN
               NEW.postcode = upper(trim(NEW.address->'postcode'));
           ELSE
-             SELECT postcode FROM placex WHERE place_id = NEW.parent_place_id INTO NEW.postcode;
+             NEW.postcode := location.postcode;
           END IF;
           IF NEW.postcode is null THEN
-            NEW.postcode := get_nearest_postcode(NEW.country_code, place_centroid);
+            NEW.postcode := get_nearest_postcode(NEW.country_code, NEW.geometry);
           END IF;
       END IF;
 
@@ -1595,21 +1156,34 @@ BEGIN
         return NEW;
       END IF;
 
-      -- Merge address from parent
-      nameaddress_vector := array_merge(nameaddress_vector, location.nameaddress_vector);
-      nameaddress_vector := array_merge(nameaddress_vector, location.name_vector);
-
       -- 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, NEW.country_code, name_vector, nameaddress_vector, NEW.rank_search, NEW.rank_address, NEW.importance, place_centroid, NEW.geometry);
-      --DEBUG: RAISE WARNING 'Place added to search table';
+      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 s.name_vector, s.nameaddress_vector FROM search_name s
+           WHERE s.place_id = NEW.parent_place_id INTO location;
+
+          nameaddress_vector := array_merge(nameaddress_vector,
+                                            location.nameaddress_vector);
+          nameaddress_vector := array_merge(nameaddress_vector, location.name_vector);
+
+          INSERT INTO search_name (place_id, search_rank, address_rank,
+                                   importance, country_code, name_vector,
+                                   nameaddress_vector, centroid)
+                 VALUES (NEW.place_id, NEW.rank_search, NEW.rank_address,
+                         NEW.importance, NEW.country_code, name_vector,
+                         nameaddress_vector, place_centroid);
+          --DEBUG: RAISE WARNING 'Place added to search table';
+        END IF;
 
       return NEW;
     END IF;
@@ -1651,9 +1225,10 @@ BEGIN
           -- mark the linked place (excludes from search results)
           UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
-          -- keep a note of the node id in case we need it for wikipedia in a bit
-          linked_node_id := linkedPlacex.osm_id;
-          select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+          select wikipedia, importance
+            FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                    'N', linkedPlacex.osm_id)
+            INTO linked_wikipedia,linked_importance;
           --DEBUG: RAISE WARNING 'Linked label member';
         END LOOP;
 
@@ -1690,9 +1265,10 @@ BEGIN
               -- mark the linked place (excludes from search results)
               UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
-              -- keep a note of the node id in case we need it for wikipedia in a bit
-              linked_node_id := linkedPlacex.osm_id;
-              select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+              select wikipedia, importance
+                FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                        'N', linkedPlacex.osm_id)
+                INTO linked_wikipedia,linked_importance;
               --DEBUG: RAISE WARNING 'Linked admin_center';
             END IF;
 
@@ -1735,9 +1311,10 @@ BEGIN
         -- mark the linked place (excludes from search results)
         UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
-        -- keep a note of the node id in case we need it for wikipedia in a bit
-        linked_node_id := linkedPlacex.osm_id;
-        select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+        select wikipedia, importance
+          FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                  'N', linkedPlacex.osm_id)
+          INTO linked_wikipedia,linked_importance;
         --DEBUG: RAISE WARNING 'Linked named place';
       END LOOP;
     END IF;
@@ -1765,13 +1342,6 @@ BEGIN
         (NEW.importance is null or NEW.importance < linked_importance) THEN
         NEW.importance = linked_importance;
     END IF;
-
-    -- Still null? how about looking it up by the node id
-    IF NEW.importance IS NULL THEN
-      --DEBUG: RAISE WARNING 'Looking up importance by linked node id';
-      select language||':'||title,importance from wikipedia_article where osm_type = 'N'::char(1) and osm_id = linked_node_id order by importance desc limit 1 INTO NEW.wikipedia,NEW.importance;
-    END IF;
-
   END IF;
 
   -- make sure all names are in the word table
@@ -1795,9 +1365,11 @@ BEGIN
         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;
-        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]);
+        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
@@ -1811,16 +1383,20 @@ BEGIN
             END IF;
 
             -- merge word into address vector
-            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]);
+            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;
-  nameaddress_vector := array_merge(nameaddress_vector, isin_tokens);
+  IF NOT %REVERSE-ONLY% THEN
+    nameaddress_vector := array_merge(nameaddress_vector, isin_tokens);
+  END IF;
 
 -- RAISE WARNING 'ISIN: %', isin_tokens;
 
@@ -1869,7 +1445,7 @@ BEGIN
 
       -- RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;
       -- Add it to the list of search terms
-      IF location.rank_search > 4 THEN
+      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)
@@ -1923,8 +1499,18 @@ BEGIN
       --DEBUG: RAISE WARNING 'insert into road location table (full)';
     END IF;
 
-    result := insertSearchName(NEW.partition, NEW.place_id, NEW.country_code, name_vector, nameaddress_vector, NEW.rank_search, NEW.rank_address, NEW.importance, place_centroid, NEW.geometry);
-    --DEBUG: RAISE WARNING 'added to serach name (full)';
+    result := insertSearchName(NEW.partition, NEW.place_id, name_vector,
+                               NEW.rank_search, NEW.rank_address, NEW.geometry);
+    --DEBUG: RAISE WARNING 'added to search name (full)';
+
+    IF NOT %REVERSE-ONLY% THEN
+        INSERT INTO search_name (place_id, search_rank, address_rank,
+                                 importance, country_code, name_vector,
+                                 nameaddress_vector, centroid)
+               VALUES (NEW.place_id, NEW.rank_search, NEW.rank_address,
+                       NEW.importance, NEW.country_code, name_vector,
+                       nameaddress_vector, place_centroid);
+    END IF;
 
   END IF;
 
@@ -1983,6 +1569,9 @@ BEGIN
   --DEBUG: RAISE WARNING 'placex_delete:09 % %',OLD.osm_type,OLD.osm_id;
 
   IF OLD.name is not null THEN
+    IF NOT %REVERSE-ONLY% THEN
+      DELETE from search_name WHERE place_id = OLD.place_id;
+    END IF;
     b := deleteSearchName(OLD.partition, OLD.place_id);
   END IF;
 
@@ -2257,12 +1846,13 @@ BEGIN
         indexed_status = 2,
         geometry = NEW.geometry
         where place_id = existingplacex.place_id;
-
       -- if a node(=>house), which is part of a interpolation line, changes (e.g. the street attribute) => mark this line for reparenting 
       -- (already here, because interpolation lines are reindexed before nodes, so in the second call it would be too late)
-      IF NEW.osm_type='N' and NEW.class='place' and NEW.type='house' THEN
-          -- Is this node part of an interpolation line? search for it in location_property_osmline and mark the interpolation line for reparenting
-          update location_property_osmline p set indexed_status = 2 from planet_osm_ways w where p.linegeo && NEW.geometry and p.osm_id = w.id and NEW.osm_id = any(w.nodes);
+      IF NEW.osm_type='N'
+         and (coalesce(existing.address, ''::hstore) != coalesce(NEW.address, ''::hstore)
+             or existing.geometry::text != NEW.geometry::text)
+      THEN
+          result:= osmline_reinsert(NEW.osm_id, NEW.geometry);
       END IF;
 
       -- linked places should get potential new naming and addresses
@@ -2354,6 +1944,9 @@ create type addressline as (
   distance FLOAT
 );
 
+-- Compute the list of address parts for the given place.
+--
+-- If in_housenumber is greator or equal 0, look for an interpolation.
 CREATE OR REPLACE FUNCTION get_addressdata(in_place_id BIGINT, in_housenumber INTEGER) RETURNS setof addressline 
   AS $$
 DECLARE
@@ -2368,53 +1961,72 @@ DECLARE
   searchhousename HSTORE;
   searchrankaddress INTEGER;
   searchpostcode TEXT;
+  postcode_isaddress BOOL;
   searchclass TEXT;
   searchtype TEXT;
   countryname HSTORE;
-  hadcountry BOOLEAN;
 BEGIN
+  -- The place ein question might not have a direct entry in place_addressline.
+  -- Look for the parent of such places then and save if in for_place_id.
+
+  postcode_isaddress := true;
+
   -- first query osmline (interpolation lines)
-  select parent_place_id, country_code, 30, postcode, null, 'place', 'house' from location_property_osmline 
-    WHERE place_id = in_place_id AND in_housenumber>=startnumber AND in_housenumber <= endnumber
-    INTO for_place_id,searchcountrycode, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
-  IF for_place_id IS NOT NULL THEN
-    searchhousenumber = in_housenumber::text;
+  IF in_housenumber >= 0 THEN
+    SELECT parent_place_id, country_code, in_housenumber::text, 30, postcode,
+           null, 'place', 'house'
+      FROM location_property_osmline
+      WHERE place_id = in_place_id AND in_housenumber>=startnumber
+            AND in_housenumber <= endnumber
+      INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress,
+           searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
 
   --then query tiger data
   -- %NOTIGERDATA% IF 0 THEN
-  IF for_place_id IS NULL THEN
-    select parent_place_id,'us', 30, postcode, null, 'place', 'house' from location_property_tiger 
-      WHERE place_id = in_place_id AND in_housenumber>=startnumber AND in_housenumber <= endnumber
-      INTO for_place_id,searchcountrycode, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
-    IF for_place_id IS NOT NULL THEN
-      searchhousenumber = in_housenumber::text;
-    END IF;
+  IF for_place_id IS NULL AND in_housenumber >= 0 THEN
+    SELECT parent_place_id, 'us', in_housenumber::text, 30, postcode, null,
+           'place', 'house'
+      FROM location_property_tiger
+      WHERE place_id = in_place_id AND in_housenumber >= startnumber
+            AND in_housenumber <= endnumber
+      INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress,
+           searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
   -- %NOTIGERDATA% END IF;
 
   -- %NOAUXDATA% IF 0 THEN
   IF for_place_id IS NULL THEN
-    select parent_place_id,'us', housenumber, 30, postcode, null, 'place', 'house' from location_property_aux
+    SELECT parent_place_id, 'us', housenumber, 30, postcode, null, 'place', 'house'
+      FROM location_property_aux
       WHERE place_id = in_place_id
-      INTO for_place_id,searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
+      INTO for_place_id,searchcountrycode, searchhousenumber, searchrankaddress,
+           searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
   -- %NOAUXDATA% END IF;
 
   -- postcode table
   IF for_place_id IS NULL THEN
-    select parent_place_id, country_code, rank_address, postcode, 'place', 'postcode'
+    SELECT parent_place_id, country_code, rank_search, postcode, 'place', 'postcode'
       FROM location_postcode
       WHERE place_id = in_place_id
-      INTO for_place_id, searchcountrycode, searchrankaddress, searchpostcode, searchclass, searchtype;
+      INTO for_place_id, searchcountrycode, searchrankaddress, searchpostcode,
+           searchclass, searchtype;
   END IF;
 
+  -- POI objects in the placex table
   IF for_place_id IS NULL THEN
-    select parent_place_id, country_code, housenumber, rank_search, postcode, name, class, type from placex 
-      WHERE place_id = in_place_id and  rank_search > 27
-      INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
+    SELECT parent_place_id, country_code, housenumber, rank_search, postcode,
+           name, class, type
+      FROM placex
+      WHERE place_id = in_place_id and rank_search > 27
+      INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress,
+           searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
 
+  -- If for_place_id is still NULL at this point then the object has its own
+  -- entry in place_address line. However, still check if there is not linked
+  -- place we should be using instead.
   IF for_place_id IS NULL THEN
     select coalesce(linked_place_id, place_id),  country_code,
            housenumber, rank_search, postcode, null
@@ -2424,103 +2036,105 @@ BEGIN
 
 --RAISE WARNING '% % % %',searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode;
 
-  found := 1000;
-  hadcountry := false;
-  FOR location IN 
-    select placex.place_id, osm_type, osm_id, name,
-      class, type, admin_level, true as isaddress,
-      CASE WHEN rank_address = 0 THEN 100 WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address,
-      0 as distance, country_code, postcode
-      from placex
-      where place_id = for_place_id 
+  found := 1000; -- the lowest rank_address included
+
+  -- Return the record for the base entry.
+  FOR location IN
+    SELECT placex.place_id, osm_type, osm_id, name,
+           class, type, admin_level,
+           type not in ('postcode', 'postal_code') as isaddress,
+           CASE WHEN rank_address = 0 THEN 100
+                WHEN rank_address = 11 THEN 5
+                ELSE rank_address END as rank_address,
+           0 as distance, country_code, postcode
+      FROM placex
+      WHERE place_id = for_place_id
   LOOP
 --RAISE WARNING '%',location;
     IF searchcountrycode IS NULL AND location.country_code IS NOT NULL THEN
       searchcountrycode := location.country_code;
     END IF;
-    IF location.type in ('postcode', 'postal_code') THEN
-      location.isaddress := FALSE;
-    ELSEIF location.rank_address = 4 THEN
-      hadcountry := true;
-    END IF;
-    IF location.rank_address < 4 AND NOT hadcountry THEN
-      select name from country_name where country_code = searchcountrycode limit 1 INTO countryname;
-      IF countryname IS NOT NULL THEN
-        countrylocation := ROW(null, null, null, countryname, 'place', 'country', null, true, true, 4, 0)::addressline;
-        RETURN NEXT countrylocation;
-      END IF;
+    IF location.rank_address < 4 THEN
+      -- no country locations for ranks higher than country
+      searchcountrycode := NULL;
     END IF;
-    countrylocation := ROW(location.place_id, location.osm_type, location.osm_id, location.name, location.class, 
-                           location.type, location.admin_level, true, location.isaddress, location.rank_address,
-                           location.distance)::addressline;
+    countrylocation := ROW(location.place_id, location.osm_type, location.osm_id,
+                           location.name, location.class, location.type,
+                           location.admin_level, true, location.isaddress,
+                           location.rank_address, location.distance)::addressline;
     RETURN NEXT countrylocation;
     found := location.rank_address;
   END LOOP;
 
-  FOR location IN 
-    select placex.place_id, osm_type, osm_id, name,
-      CASE WHEN extratags ? 'place' THEN 'place' ELSE class END as class,
-      CASE WHEN extratags ? 'place' THEN extratags->'place' ELSE type END as type,
-      admin_level, fromarea, isaddress,
-      CASE WHEN address_place_id = for_place_id AND rank_address = 0 THEN 100 WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address,
-      distance,country_code,postcode
-      from place_addressline join placex on (address_place_id = placex.place_id) 
-      where place_addressline.place_id = for_place_id 
-      and (cached_rank_address > 0 AND cached_rank_address < searchrankaddress)
-      and address_place_id != for_place_id and linked_place_id is null
-      and (placex.country_code IS NULL OR searchcountrycode IS NULL OR placex.country_code = searchcountrycode)
-      order by rank_address desc,isaddress desc,fromarea desc,distance asc,rank_search desc
+  FOR location IN
+    SELECT placex.place_id, osm_type, osm_id, name,
+           CASE WHEN extratags ? 'place' THEN 'place' ELSE class END as class,
+           CASE WHEN extratags ? 'place' THEN extratags->'place' ELSE type END as type,
+           admin_level, fromarea, isaddress,
+           CASE WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address,
+           distance, country_code, postcode
+      FROM place_addressline join placex on (address_place_id = placex.place_id)
+      WHERE place_addressline.place_id = for_place_id
+            AND (cached_rank_address >= 4 AND cached_rank_address < searchrankaddress)
+            AND linked_place_id is null
+            AND (placex.country_code IS NULL OR searchcountrycode IS NULL
+                 OR placex.country_code = searchcountrycode)
+      ORDER BY rank_address desc, isaddress desc, fromarea desc,
+               distance asc, rank_search desc
   LOOP
 --RAISE WARNING '%',location;
     IF searchcountrycode IS NULL AND location.country_code IS NOT NULL THEN
       searchcountrycode := location.country_code;
     END IF;
     IF location.type in ('postcode', 'postal_code') THEN
-      location.isaddress := FALSE;
-    END IF;
-    IF location.rank_address = 4 AND location.isaddress THEN
-      hadcountry := true;
-    END IF;
-    IF location.rank_address < 4 AND NOT hadcountry THEN
-      select name from country_name where country_code = searchcountrycode limit 1 INTO countryname;
-      IF countryname IS NOT NULL THEN
-        countrylocation := ROW(null, null, null, countryname, 'place', 'country', null, true, true, 4, 0)::addressline;
-        RETURN NEXT countrylocation;
+      postcode_isaddress := false;
+      IF location.osm_type != 'R' THEN
+        location.isaddress := FALSE;
       END IF;
     END IF;
-    countrylocation := ROW(location.place_id, location.osm_type, location.osm_id, location.name, location.class, 
-                           location.type, location.admin_level, location.fromarea, location.isaddress, location.rank_address, 
+    countrylocation := ROW(location.place_id, location.osm_type, location.osm_id,
+                           location.name, location.class, location.type,
+                           location.admin_level, location.fromarea,
+                           location.isaddress, location.rank_address,
                            location.distance)::addressline;
     RETURN NEXT countrylocation;
     found := location.rank_address;
   END LOOP;
 
+  -- If no country was included yet, add the name information from country_name.
   IF found > 4 THEN
-    select name from country_name where country_code = searchcountrycode limit 1 INTO countryname;
+    SELECT name FROM country_name
+      WHERE country_code = searchcountrycode LIMIT 1 INTO countryname;
 --RAISE WARNING '% % %',found,searchcountrycode,countryname;
     IF countryname IS NOT NULL THEN
-      location := ROW(null, null, null, countryname, 'place', 'country', null, true, true, 4, 0)::addressline;
+      location := ROW(null, null, null, countryname, 'place', 'country',
+                      null, true, true, 4, 0)::addressline;
       RETURN NEXT location;
     END IF;
   END IF;
 
+  -- Finally add some artificial rows.
   IF searchcountrycode IS NOT NULL THEN
-    location := ROW(null, null, null, hstore('ref', searchcountrycode), 'place', 'country_code', null, true, false, 4, 0)::addressline;
+    location := ROW(null, null, null, hstore('ref', searchcountrycode),
+                    'place', 'country_code', null, true, false, 4, 0)::addressline;
     RETURN NEXT location;
   END IF;
 
   IF searchhousename IS NOT NULL THEN
-    location := ROW(in_place_id, null, null, searchhousename, searchclass, searchtype, null, true, true, 29, 0)::addressline;
+    location := ROW(in_place_id, null, null, searchhousename, searchclass,
+                    searchtype, null, true, true, 29, 0)::addressline;
     RETURN NEXT location;
   END IF;
 
   IF searchhousenumber IS NOT NULL THEN
-    location := ROW(in_place_id, null, null, hstore('ref', searchhousenumber), 'place', 'house_number', null, true, true, 28, 0)::addressline;
+    location := ROW(in_place_id, null, null, hstore('ref', searchhousenumber),
+                    'place', 'house_number', null, true, true, 28, 0)::addressline;
     RETURN NEXT location;
   END IF;
 
   IF searchpostcode IS NOT NULL THEN
-    location := ROW(null, null, null, hstore('ref', searchpostcode), 'place', 'postcode', null, true, true, 5, 0)::addressline;
+    location := ROW(null, null, null, hstore('ref', searchpostcode), 'place',
+                    'postcode', null, false, postcode_isaddress, 5, 0)::addressline;
     RETURN NEXT location;
   END IF;
 
@@ -2530,96 +2144,6 @@ $$
 LANGUAGE plpgsql;
 
 
-CREATE OR REPLACE FUNCTION get_searchrank_label(rank INTEGER) RETURNS TEXT
-  AS $$
-DECLARE
-BEGIN
-  IF rank < 2 THEN
-    RETURN 'Continent';
-  ELSEIF rank < 4 THEN
-    RETURN 'Sea';
-  ELSEIF rank < 8 THEN
-    RETURN 'Country';
-  ELSEIF rank < 12 THEN
-    RETURN 'State';
-  ELSEIF rank < 16 THEN
-    RETURN 'County';
-  ELSEIF rank = 16 THEN
-    RETURN 'City';
-  ELSEIF rank = 17 THEN
-    RETURN 'Town / Island';
-  ELSEIF rank = 18 THEN
-    RETURN 'Village / Hamlet';
-  ELSEIF rank = 20 THEN
-    RETURN 'Suburb';
-  ELSEIF rank = 21 THEN
-    RETURN 'Postcode Area';
-  ELSEIF rank = 22 THEN
-    RETURN 'Croft / Farm / Locality / Islet';
-  ELSEIF rank = 23 THEN
-    RETURN 'Postcode Area';
-  ELSEIF rank = 25 THEN
-    RETURN 'Postcode Point';
-  ELSEIF rank = 26 THEN
-    RETURN 'Street / Major Landmark';
-  ELSEIF rank = 27 THEN
-    RETURN 'Minory Street / Path';
-  ELSEIF rank = 28 THEN
-    RETURN 'House / Building';
-  ELSE
-    RETURN 'Other: '||rank;
-  END IF;
-  
-END;
-$$
-LANGUAGE plpgsql;
-
-CREATE OR REPLACE FUNCTION get_addressrank_label(rank INTEGER) RETURNS TEXT
-  AS $$
-DECLARE
-BEGIN
-  IF rank = 0 THEN
-    RETURN 'None';
-  ELSEIF rank < 2 THEN
-    RETURN 'Continent';
-  ELSEIF rank < 4 THEN
-    RETURN 'Sea';
-  ELSEIF rank = 5 THEN
-    RETURN 'Postcode';
-  ELSEIF rank < 8 THEN
-    RETURN 'Country';
-  ELSEIF rank < 12 THEN
-    RETURN 'State';
-  ELSEIF rank < 16 THEN
-    RETURN 'County';
-  ELSEIF rank = 16 THEN
-    RETURN 'City';
-  ELSEIF rank = 17 THEN
-    RETURN 'Town / Village / Hamlet';
-  ELSEIF rank = 20 THEN
-    RETURN 'Suburb';
-  ELSEIF rank = 21 THEN
-    RETURN 'Postcode Area';
-  ELSEIF rank = 22 THEN
-    RETURN 'Croft / Farm / Locality / Islet';
-  ELSEIF rank = 23 THEN
-    RETURN 'Postcode Area';
-  ELSEIF rank = 25 THEN
-    RETURN 'Postcode Point';
-  ELSEIF rank = 26 THEN
-    RETURN 'Street / Major Landmark';
-  ELSEIF rank = 27 THEN
-    RETURN 'Minory Street / Path';
-  ELSEIF rank = 28 THEN
-    RETURN 'House / Building';
-  ELSE
-    RETURN 'Other: '||rank;
-  END IF;
-  
-END;
-$$
-LANGUAGE plpgsql;
-
 CREATE OR REPLACE FUNCTION aux_create_property(pointgeo GEOMETRY, in_housenumber TEXT, 
   in_street TEXT, in_isin TEXT, in_postcode TEXT, in_countrycode char(2)) RETURNS INTEGER
   AS $$
@@ -2724,7 +2248,7 @@ END;
 $$
 LANGUAGE plpgsql IMMUTABLE;
 
-DROP TYPE wikipedia_article_match CASCADE;
+DROP TYPE IF EXISTS wikipedia_article_match CASCADE;
 create type wikipedia_article_match as (
   language TEXT,
   title TEXT,
@@ -2781,6 +2305,42 @@ END;
 $$
 LANGUAGE plpgsql;
 
+DROP TYPE IF EXISTS place_importance CASCADE;
+create type place_importance as (
+  importance FLOAT,
+  wikipedia TEXT
+);
+
+CREATE OR REPLACE FUNCTION compute_importance(extratags HSTORE, country_code varchar(2), osm_type varchar(1), osm_id BIGINT)
+  RETURNS place_importance
+  AS $$
+DECLARE
+  match RECORD;
+  result place_importance;
+BEGIN
+  FOR match IN SELECT * FROM get_wikipedia_match(extratags, country_code)
+               WHERE language is not NULL
+  LOOP
+    result.importance := match.importance;
+    result.wikipedia := match.language || ':' || match.title;
+    RETURN result;
+  END LOOP;
+
+  IF extratags ? 'wikidata' THEN
+    FOR match IN SELECT * FROM wikipedia_article
+                  WHERE wd_page_title = extratags->'wikidata'
+                  ORDER BY language = 'en' DESC, langcount DESC LIMIT 1 LOOP
+      result.importance := match.importance;
+      result.wikipedia := match.language || ':' || match.title;
+      RETURN result;
+    END LOOP;
+  END IF;
+
+  RETURN null;
+END;
+$$
+LANGUAGE plpgsql;
+
 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT, maxdepth INTEGER) 
   RETURNS SETOF GEOMETRY
   AS $$