X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/646fa53b44e1ed3624b3af532dfd9a773560eb1e..178cb987951255c24b84bd6d8b0e18315253bcb4:/sql/functions.sql?ds=sidebyside

diff --git a/sql/functions.sql b/sql/functions.sql
index 7c62bc93..73790353 100644
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -561,14 +561,6 @@ 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 +569,6 @@ 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;
 $$
@@ -817,11 +801,12 @@ 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;
 
@@ -848,140 +833,74 @@ 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;
 
-    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 = 'place' THEN
+      IF NEW.type in ('continent', 'sea', 'country', 'state') AND NEW.osm_type = 'N' THEN
+        NEW.rank_address := 0;
+      END IF;
+    ELSEIF 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)
@@ -1302,6 +1221,9 @@ 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);
@@ -1389,10 +1311,6 @@ 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;
 
@@ -1568,8 +1486,9 @@ 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';
 
@@ -1578,7 +1497,7 @@ 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);
@@ -1591,21 +1510,34 @@ 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;
@@ -1791,9 +1723,11 @@ 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
@@ -1807,16 +1741,20 @@ 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;
 
@@ -1865,7 +1803,7 @@ 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% AND location.rank_search > 4 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)
@@ -1897,33 +1835,6 @@ BEGIN
   END LOOP;
   --DEBUG: RAISE WARNING 'address computed';
 
-  -- for long ways we should add search terms for the entire length
-  IF st_length(NEW.geometry) > 0.05 THEN
-
-    location_rank_search := 0;
-    location_distance := 0;
-
-    FOR location IN SELECT * from getNearFeatures(NEW.partition, NEW.geometry, search_maxrank, isin_tokens) LOOP
-
-      IF location.rank_address != location_rank_search THEN
-        location_rank_search := location.rank_address;
-        location_distance := location.distance * 1.5;
-      END IF;
-
-      IF location.rank_search > 4 AND location.distance < location_distance THEN
-
-        -- Add it to the list of search terms
-        nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);
-        INSERT INTO place_addressline (place_id, address_place_id, fromarea, isaddress, distance, cached_rank_address)
-          VALUES (NEW.place_id, location.place_id, true, false, location.distance, location.rank_address); 
-
-      END IF;
-
-    END LOOP;
-
-  END IF;
-  --DEBUG: RAISE WARNING 'search terms for long ways added';
-
   IF NEW.address is not null AND NEW.address ? 'postcode' 
      AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
     NEW.postcode := upper(trim(NEW.address->'postcode'));
@@ -1946,8 +1857,18 @@ 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;
 
@@ -2006,6 +1927,9 @@ 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;
 
@@ -2377,6 +2301,9 @@ 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
@@ -2394,50 +2321,66 @@ DECLARE
   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.
+
   -- 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_address, 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
@@ -2447,52 +2390,51 @@ 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
@@ -2501,49 +2443,49 @@ BEGIN
     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;
-      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, true, true, 5, 0)::addressline;
     RETURN NEXT location;
   END IF;
 
@@ -2553,96 +2495,6 @@ $$
 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 $$