Merge branch 'patch-1' of https://github.com/Firefishy/Nominatim

[nominatim.git] / sql / functions.sql

diff --git a/sql/functions.sql b/sql/functions.sql
index c21ae1f9010d106fadf467cace96e76ec76dbd7d..25769785b8bfd4fe4a1570e81ff92b369b782125 100644 (file)
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -52,35 +52,14 @@ DECLARE
   NEWgeometry geometry;
 BEGIN
 --  RAISE WARNING '%',place;
   NEWgeometry geometry;
 BEGIN
 --  RAISE WARNING '%',place;

-  NEWgeometry := place;
-  IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
-    NEWgeometry := ST_buffer(NEWgeometry,0);
-    IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
-      RETURN 0;
-    END IF;
-  END IF;
-  RETURN (partition*1000000) + (500-ST_X(ST_Centroid(NEWgeometry))::integer)*1000 + (500-ST_Y(ST_Centroid(NEWgeometry))::integer);
-END;
-$$
-LANGUAGE plpgsql IMMUTABLE;
-
-CREATE OR REPLACE FUNCTION debug_geometry_sector(osmid integer, place geometry) RETURNS INTEGER
-  AS $$
-DECLARE
-  NEWgeometry geometry;
-BEGIN
---  RAISE WARNING '%',osmid;
-  IF osmid = 61315 THEN
-    return null;
-  END IF;
-  NEWgeometry := place;
-  IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
-    NEWgeometry := ST_buffer(NEWgeometry,0);
-    IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
-      RETURN NULL;
-    END IF;
-  END IF;
-  RETURN (500-ST_X(ST_Centroid(NEWgeometry))::integer)*1000 + (500-ST_Y(ST_Centroid(NEWgeometry))::integer);
+  NEWgeometry := ST_PointOnSurface(place);
+--  IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
+--    NEWgeometry := ST_buffer(NEWgeometry,0);
+--    IF ST_IsEmpty(NEWgeometry) OR NOT ST_IsValid(NEWgeometry) OR ST_X(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEWgeometry))::text in ('NaN','Infinity','-Infinity') THEN  
+--      RETURN 0;
+--    END IF;
+--  END IF;
+  RETURN (partition*1000000) + (500-ST_X(NEWgeometry)::integer)*1000 + (500-ST_Y(NEWgeometry)::integer);

 END;
 $$
 LANGUAGE plpgsql IMMUTABLE;
 END;
 $$
 LANGUAGE plpgsql IMMUTABLE;


@@ -389,7 +368,7 @@ BEGIN
   result := '{}'::INTEGER[];
 
   s := make_standard_name(src);
   result := '{}'::INTEGER[];
 
   s := make_standard_name(src);

-  w := getorcreate_name_id(s);
+  w := getorcreate_name_id(s, src);

 
   IF NOT (ARRAY[w] <@ result) THEN
     result := result || w;
 
   IF NOT (ARRAY[w] <@ result) THEN
     result := result || w;


@@ -407,6 +386,30 @@ BEGIN
     END LOOP;
   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 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;
 $$
   RETURN result;
 END;
 $$


@@ -443,54 +446,63 @@ DECLARE
   place_centre GEOMETRY;
   nearcountry RECORD;
 BEGIN
   place_centre GEOMETRY;
   nearcountry RECORD;
 BEGIN

-  place_centre := ST_Centroid(place);
+  place_centre := ST_PointOnSurface(place);
+
+--DEBUG: RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);

 
 

---RAISE WARNING 'start: %', ST_AsText(place_centre);
+--DEBUG: RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);

 
 

-  -- Try for a OSM polygon first
-  FOR nearcountry IN select country_code from location_area_country where country_code is not null and not isguess and st_contains(geometry, place_centre) limit 1
+  -- Try for OSM fallback data
+  -- The order is to deal with places like HongKong that are 'states' within another polygon
+  FOR nearcountry IN select country_code from country_osm_grid where st_covers(geometry, place_centre) order by area asc limit 1

   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 

---RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);
-
-  -- Try for OSM fallback data
-  FOR nearcountry IN select country_code from country_osm_grid where st_contains(geometry, place_centre) limit 1
+  -- 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

   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 

---RAISE WARNING 'natural earth: %', ST_AsText(place_centre);
+--DEBUG: RAISE WARNING 'natural earth: %', ST_AsText(place_centre);

 
 

-  -- Natural earth data (first fallback)
-  FOR nearcountry IN select country_code from country_naturalearthdata where st_contains(geometry, place_centre) limit 1
+  -- 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;
 
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 

-  -- Natural earth data (first fallback)
-  FOR nearcountry IN select country_code from country_naturalearthdata where st_distance(geometry, place_centre) < 0.5 limit 1
+--DEBUG: RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
+
+  -- 
+  FOR nearcountry IN select country_code from country_osm_grid where st_dwithin(geometry, place_centre, 0.5) order by st_distance(geometry, place_centre) asc, area asc limit 1

   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 

---RAISE WARNING 'in country: %', ST_AsText(place_centre);
+--DEBUG: RAISE WARNING 'near natural earth: %', ST_AsText(place_centre);

 
 

-  -- WorldBoundaries data (second fallback - think there might be something broken in this data)
-  FOR nearcountry IN select country_code from country where st_contains(geometry, place_centre) limit 1
+  -- 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;
 
   LOOP
     RETURN nearcountry.country_code;
   END LOOP;
 

+  -- WorldBoundaries data (second fallback - think there might be something broken in this data)
+--  FOR nearcountry IN select country_code from country where st_covers(geometry, place_centre) limit 1
+--  LOOP
+--    RETURN nearcountry.country_code;
+--  END LOOP;
+

 --RAISE WARNING 'near country: %', ST_AsText(place_centre);
 
   -- Still not in a country - try nearest within ~12 miles of a country
 --RAISE WARNING 'near country: %', ST_AsText(place_centre);
 
   -- Still not in a country - try nearest within ~12 miles of a country

-  FOR nearcountry IN select country_code from country where st_distance(geometry, place_centre) < 0.5 
-    order by st_distance(geometry, place) limit 1
-  LOOP
-    RETURN nearcountry.country_code;
-  END LOOP;
+--  FOR nearcountry IN select country_code from country where st_distance(geometry, place_centre) < 0.5 
+--    order by st_distance(geometry, place) limit 1
+--  LOOP
+--    RETURN nearcountry.country_code;
+--  END LOOP;

 
   RETURN NULL;
 END;
 
   RETURN NULL;
 END;


@@ -565,17 +577,11 @@ CREATE OR REPLACE FUNCTION add_location(
 DECLARE
   locationid INTEGER;
   isarea BOOLEAN;
 DECLARE
   locationid INTEGER;
   isarea BOOLEAN;

-  xmin INTEGER;
-  ymin INTEGER;
-  xmax INTEGER;
-  ymax INTEGER;
-  lon INTEGER;
-  lat INTEGER;

   centroid GEOMETRY;
   centroid GEOMETRY;

-  secgeo GEOMETRY;
-  secbox GEOMETRY;

   diameter FLOAT;
   x BOOLEAN;
   diameter FLOAT;
   x BOOLEAN;

+  splitGeom RECORD;
+  secgeo GEOMETRY;

 BEGIN
 
   IF rank_search > 25 THEN
 BEGIN
 
   IF rank_search > 25 THEN


@@ -592,27 +598,9 @@ BEGIN
     isArea := true;
     centroid := ST_Centroid(geometry);
 
     isArea := true;
     centroid := ST_Centroid(geometry);
 

-    xmin := floor(st_xmin(geometry));
-    xmax := ceil(st_xmax(geometry));
-    ymin := floor(st_ymin(geometry));
-    ymax := ceil(st_ymax(geometry));
-
-    IF xmin = xmax OR ymin = ymax OR (xmax-xmin < 2 AND ymax-ymin < 2) THEN
-      x := insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, centroid, geometry);
-    ELSE
---      RAISE WARNING 'Spliting geometry: % to %, % to %', xmin, xmax, ymin, ymax;
-      FOR lon IN xmin..(xmax-1) LOOP
-        FOR lat IN ymin..(ymax-1) LOOP
-          secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(lon,lat),ST_Point(lon+1,lat+1)),4326);
-          IF st_intersects(geometry, secbox) THEN
-            secgeo := st_intersection(geometry, secbox);
-            IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
-              x := insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, centroid, secgeo);
-            END IF;
-          END IF;
-        END LOOP;
-      END LOOP;
-    END IF;
+    FOR secgeo IN select split_geometry(geometry) AS geom LOOP
+      x := insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, centroid, secgeo);
+    END LOOP;

 
   ELSEIF rank_search < 26 THEN
 
 
   ELSEIF rank_search < 26 THEN
 


@@ -742,7 +730,7 @@ $$
 LANGUAGE plpgsql;
 
 
 LANGUAGE plpgsql;
 
 

-CREATE OR REPLACE FUNCTION create_interpolation(wayid INTEGER, interpolationtype TEXT) RETURNS INTEGER
+CREATE OR REPLACE FUNCTION create_interpolation(wayid BIGINT, interpolationtype TEXT) RETURNS INTEGER

   AS $$
 DECLARE
   
   AS $$
 DECLARE
   


@@ -781,6 +769,13 @@ BEGIN
           -- null record of right type
           select * from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::INTEGER and type = 'house' limit 1 INTO nextnode;
           select ST_SetSRID(ST_Point(lon::float/10000000,lat::float/10000000),4326) from planet_osm_nodes where id = waynodes[nodeidpos] INTO nextnode.geometry;
           -- null record of right type
           select * from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::INTEGER and type = 'house' limit 1 INTO nextnode;
           select ST_SetSRID(ST_Point(lon::float/10000000,lat::float/10000000),4326) from planet_osm_nodes where id = waynodes[nodeidpos] INTO nextnode.geometry;

+          IF nextnode.geometry IS NULL THEN
+            -- we don't have any information about this point, most likely
+            -- because an excerpt was updated and the node never imported
+            -- because the interpolation is outside the region of the excerpt.
+            -- Give up.
+            RETURN newpoints;
+          END IF;

         ELSE
           select * from placex where place_id = search_place_id INTO nextnode;
         END IF;
         ELSE
           select * from placex where place_id = search_place_id INTO nextnode;
         END IF;


@@ -877,7 +872,7 @@ DECLARE
   diameter FLOAT;
   classtable TEXT;
 BEGIN
   diameter FLOAT;
   classtable TEXT;
 BEGIN

---  RAISE WARNING '%',NEW.osm_id;
+  --DEBUG: RAISE WARNING '% %',NEW.osm_type,NEW.osm_id;

 
   -- just block these
   IF NEW.class = 'highway' and NEW.type in ('turning_circle','traffic_signals','mini_roundabout','noexit','crossing') THEN
 
   -- just block these
   IF NEW.class = 'highway' and NEW.type in ('turning_circle','traffic_signals','mini_roundabout','noexit','crossing') THEN


@@ -891,7 +886,7 @@ BEGIN
 
   IF ST_IsEmpty(NEW.geometry) OR NOT ST_IsValid(NEW.geometry) OR ST_X(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') THEN  
     -- block all invalid geometary - just not worth the risk.  seg faults are causing serious problems.
 
   IF ST_IsEmpty(NEW.geometry) OR NOT ST_IsValid(NEW.geometry) OR ST_X(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') THEN  
     -- block all invalid geometary - just not worth the risk.  seg faults are causing serious problems.

---    RAISE WARNING 'invalid geometry %',NEW.osm_id;
+    RAISE WARNING 'invalid geometry %',NEW.osm_id;

     RETURN NULL;
 
     -- Dead code
     RETURN NULL;
 
     -- Dead code


@@ -901,21 +896,24 @@ BEGIN
     END IF;
     NEW.geometry := ST_buffer(NEW.geometry,0);
     IF ST_IsEmpty(NEW.geometry) OR NOT ST_IsValid(NEW.geometry) OR ST_X(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') THEN  
     END IF;
     NEW.geometry := ST_buffer(NEW.geometry,0);
     IF ST_IsEmpty(NEW.geometry) OR NOT ST_IsValid(NEW.geometry) OR ST_X(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') OR ST_Y(ST_Centroid(NEW.geometry))::text in ('NaN','Infinity','-Infinity') THEN  

---      RAISE WARNING 'Invalid geometary, rejecting: % %', NEW.osm_type, NEW.osm_id;
+      RAISE WARNING 'Invalid geometary, rejecting: % %', NEW.osm_type, NEW.osm_id;

       RETURN NULL;
     END IF;
   END IF;
 
       RETURN NULL;
     END IF;
   END IF;
 

+  --DEBUG: RAISE WARNING '% % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
+

   NEW.place_id := nextval('seq_place');
   NEW.indexed_status := 1; --STATUS_NEW
 
   NEW.place_id := nextval('seq_place');
   NEW.indexed_status := 1; --STATUS_NEW
 

-  NEW.country_code := lower(get_country_code(NEW.geometry, NEW.country_code));
-  NEW.partition := get_partition(NEW.geometry, NEW.country_code);
+  NEW.calculated_country_code := lower(get_country_code(NEW.geometry, NEW.country_code));
+
+  NEW.partition := get_partition(NEW.geometry, NEW.calculated_country_code);

   NEW.geometry_sector := geometry_sector(NEW.partition, NEW.geometry);
 
   -- copy 'name' to or from the default language (if there is a default language)
   IF NEW.name is not null AND array_upper(akeys(NEW.name),1) > 1 THEN
   NEW.geometry_sector := geometry_sector(NEW.partition, NEW.geometry);
 
   -- copy 'name' to or from the default language (if there is a default language)
   IF NEW.name is not null AND array_upper(akeys(NEW.name),1) > 1 THEN

-    default_language := get_country_language_code(NEW.country_code);
+    default_language := get_country_language_code(NEW.calculated_country_code);

     IF default_language IS NOT NULL THEN
       IF NEW.name ? 'name' AND NOT NEW.name ? ('name:'||default_language) THEN
         NEW.name := NEW.name || (('name:'||default_language) => (NEW.name -> 'name'));
     IF default_language IS NOT NULL THEN
       IF NEW.name ? 'name' AND NOT NEW.name ? ('name:'||default_language) THEN
         NEW.name := NEW.name || (('name:'||default_language) => (NEW.name -> 'name'));


@@ -942,9 +940,14 @@ BEGIN
     -- 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
 
     -- 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.postcode IS NULL THEN
+            -- most likely just a part of a multipolygon postcode boundary, throw it away
+            RETURN NULL;
+        END IF;
+

         NEW.name := 'ref'=>NEW.postcode;
 
         NEW.name := 'ref'=>NEW.postcode;
 

-        IF NEW.country_code = 'gb' THEN
+        IF NEW.calculated_country_code = 'gb' THEN

 
           IF NEW.postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
             NEW.rank_search := 25;
 
           IF NEW.postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
             NEW.rank_search := 25;


@@ -957,7 +960,7 @@ BEGIN
             NEW.rank_address := 5;
           END IF;
 
             NEW.rank_address := 5;
           END IF;
 

-        ELSEIF NEW.country_code = 'de' THEN
+        ELSEIF NEW.calculated_country_code = 'de' THEN

 
           IF NEW.postcode ~ '^([0-9]{5})$' THEN
             NEW.rank_search := 21;
 
           IF NEW.postcode ~ '^([0-9]{5})$' THEN
             NEW.rank_search := 21;


@@ -987,9 +990,11 @@ BEGIN
       IF NEW.type in ('continent') THEN
         NEW.rank_search := 2;
         NEW.rank_address := NEW.rank_search;
       IF NEW.type in ('continent') THEN
         NEW.rank_search := 2;
         NEW.rank_address := NEW.rank_search;

+        NEW.calculated_country_code := NULL;

       ELSEIF NEW.type in ('sea') THEN
         NEW.rank_search := 2;
         NEW.rank_address := 0;
       ELSEIF NEW.type in ('sea') THEN
         NEW.rank_search := 2;
         NEW.rank_address := 0;

+        NEW.calculated_country_code := NULL;

       ELSEIF NEW.type in ('country') THEN
         NEW.rank_search := 4;
         NEW.rank_address := NEW.rank_search;
       ELSEIF NEW.type in ('country') THEN
         NEW.rank_search := 4;
         NEW.rank_address := NEW.rank_search;


@@ -997,8 +1002,8 @@ BEGIN
         NEW.rank_search := 8;
         NEW.rank_address := NEW.rank_search;
       ELSEIF NEW.type in ('region') THEN
         NEW.rank_search := 8;
         NEW.rank_address := NEW.rank_search;
       ELSEIF NEW.type in ('region') THEN

-        NEW.rank_search := 10;
-        NEW.rank_address := NEW.rank_search;
+        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 ('county') THEN
         NEW.rank_search := 12;
         NEW.rank_address := NEW.rank_search;


@@ -1032,6 +1037,10 @@ BEGIN
       ELSEIF NEW.type in ('farm','locality','islet','isolated_dwelling','mountain_pass') THEN
         NEW.rank_search := 20;
         NEW.rank_address := 0;
       ELSEIF NEW.type in ('farm','locality','islet','isolated_dwelling','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 ('hall_of_residence','neighbourhood','housing_estate','nature_reserve') THEN
         NEW.rank_search := 22;
         NEW.rank_address := 22;
       ELSEIF NEW.type in ('hall_of_residence','neighbourhood','housing_estate','nature_reserve') THEN
         NEW.rank_search := 22;
         NEW.rank_address := 22;


@@ -1100,7 +1109,12 @@ BEGIN
   END IF;
 
   IF (NEW.extratags -> 'capital') = 'yes' THEN
   END IF;
 
   IF (NEW.extratags -> 'capital') = 'yes' THEN

-    NEW.rank_search := NEW.rank_search -1;
+    NEW.rank_search := NEW.rank_search - 1;
+  END IF;
+
+  -- a country code make no sense below rank 4 (country)
+  IF NEW.rank_address < 4 THEN
+    NEW.calculated_country_code := NULL;

   END IF;
 
 -- Block import below rank 22
   END IF;
 
 -- Block import below rank 22


@@ -1108,7 +1122,9 @@ BEGIN
 --    RETURN NULL;
 --  END IF;
 
 --    RETURN NULL;
 --  END IF;
 

-  RETURN NEW;  -- The following is not needed until doing diff updates, and slows the main index process down
+  --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 (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_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


@@ -1117,9 +1133,9 @@ BEGIN
 --    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)
 --    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_Contains(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry)) 
+      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);
        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);

-      update placex set indexed_status = 2 where (ST_Contains(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry)) 
+      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);
     END IF;
   ELSE
        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);
     END IF;
   ELSE


@@ -1204,6 +1220,8 @@ DECLARE
 
   location_rank_search INTEGER;
   location_distance FLOAT;
 
   location_rank_search INTEGER;
   location_distance FLOAT;

+  location_parent GEOMETRY;
+  location_isaddress BOOLEAN;

 
   tagpairid INTEGER;
 
 
   tagpairid INTEGER;
 


@@ -1211,9 +1229,17 @@ DECLARE
   name_vector INTEGER[];
   nameaddress_vector INTEGER[];
 
   name_vector INTEGER[];
   nameaddress_vector INTEGER[];
 

+  linked_node_id BIGINT;
+

   result BOOLEAN;
 BEGIN
 
   result BOOLEAN;
 BEGIN
 

+  IF NEW.indexed_status != 0 OR OLD.indexed_status = 0 OR NEW.linked_place_id is not null THEN
+    RETURN NEW;
+  END IF;
+
+  --DEBUG: RAISE WARNING 'placex_update % %',NEW.osm_type,NEW.osm_id;
+

 --RAISE WARNING '%',NEW.place_id;
 --RAISE WARNING '%', NEW;
 
 --RAISE WARNING '%',NEW.place_id;
 --RAISE WARNING '%', NEW;
 


@@ -1224,11 +1250,13 @@ BEGIN
 
   -- deferred delete
   IF OLD.indexed_status = 100 THEN
 
   -- deferred delete
   IF OLD.indexed_status = 100 THEN

+    --DEBUG: RAISE WARNING 'placex_update_delete % %',NEW.osm_type,NEW.osm_id;

     delete from placex where place_id = OLD.place_id;
     RETURN NULL;
   END IF;
 
     delete from placex where place_id = OLD.place_id;
     RETURN NULL;
   END IF;
 

-  IF NEW.indexed_status = 0 and OLD.indexed_status != 0 THEN
+  IF OLD.indexed_status != 0 THEN
+    --DEBUG: RAISE WARNING 'placex_update_0 % %',NEW.osm_type,NEW.osm_id;

 
     NEW.indexed_date = now();
 
 
     NEW.indexed_date = now();
 


@@ -1237,7 +1265,7 @@ BEGIN
       RETURN NEW;
     END IF;
 
       RETURN NEW;
     END IF;
 

-    IF OLD.indexed_status > 1 THEN
+    IF OLD.indexed_status > 0 THEN

       result := deleteSearchName(NEW.partition, NEW.place_id);
       DELETE FROM place_addressline WHERE place_id = NEW.place_id;
       DELETE FROM place_boundingbox where place_id = NEW.place_id;
       result := deleteSearchName(NEW.partition, NEW.place_id);
       DELETE FROM place_addressline WHERE place_id = NEW.place_id;
       DELETE FROM place_boundingbox where place_id = NEW.place_id;


@@ -1246,11 +1274,20 @@ BEGIN
       UPDATE placex set linked_place_id = null where linked_place_id = NEW.place_id;
     END IF;
 
       UPDATE placex set linked_place_id = null where linked_place_id = NEW.place_id;
     END IF;
 

-    -- reclaculate country and partition (should probably have a country_code and calculated_country_code as seperate fields)
-    SELECT country_code from place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type = NEW.type INTO NEW.country_code;
-    NEW.country_code := lower(get_country_code(NEW.geometry, NEW.country_code));
-    NEW.partition := get_partition(NEW.geometry, NEW.country_code);
-    NEW.geometry_sector := geometry_sector(NEW.partition, NEW.geometry);
+    -- Speed up searches - just use the centroid of the feature
+    -- cheaper but less acurate
+    place_centroid := ST_PointOnSurface(NEW.geometry);
+    NEW.centroid := null;
+
+    -- reclaculate country and partition
+    IF NEW.rank_search >= 4 THEN
+      --NEW.calculated_country_code := lower(get_country_code(NEW.geometry, NEW.country_code));
+      NEW.calculated_country_code := lower(get_country_code(place_centroid));
+    ELSE
+      NEW.calculated_country_code := NULL;
+    END IF;
+    NEW.partition := get_partition(place_centroid, NEW.calculated_country_code);
+    NEW.geometry_sector := geometry_sector(NEW.partition, place_centroid);

 
     -- Adding ourselves to the list simplifies address calculations later
     INSERT INTO place_addressline VALUES (NEW.place_id, NEW.place_id, true, true, 0, NEW.rank_address); 
 
     -- Adding ourselves to the list simplifies address calculations later
     INSERT INTO place_addressline VALUES (NEW.place_id, NEW.place_id, true, true, 0, NEW.rank_address); 


@@ -1258,15 +1295,10 @@ BEGIN
     -- What level are we searching from
     search_maxrank := NEW.rank_search;
 
     -- What level are we searching from
     search_maxrank := NEW.rank_search;
 

-    -- Speed up searches - just use the centroid of the feature
-    -- cheaper but less acurate
-    place_centroid := ST_Centroid(NEW.geometry);
-    NEW.centroid := null;
-

     -- Thought this wasn't needed but when we add new languages to the country_name table
     -- we need to update the existing names
     IF NEW.name is not null AND array_upper(akeys(NEW.name),1) > 1 THEN
     -- Thought this wasn't needed but when we add new languages to the country_name table
     -- we need to update the existing names
     IF NEW.name is not null AND array_upper(akeys(NEW.name),1) > 1 THEN

-      default_language := get_country_language_code(NEW.country_code);
+      default_language := get_country_language_code(NEW.calculated_country_code);

       IF default_language IS NOT NULL THEN
         IF NEW.name ? 'name' AND NOT NEW.name ? ('name:'||default_language) THEN
           NEW.name := NEW.name || (('name:'||default_language) => (NEW.name -> 'name'));
       IF default_language IS NOT NULL THEN
         IF NEW.name ? 'name' AND NOT NEW.name ? ('name:'||default_language) THEN
           NEW.name := NEW.name || (('name:'||default_language) => (NEW.name -> 'name'));


@@ -1290,7 +1322,13 @@ BEGIN
       address_havelevel[i] := false;
     END LOOP;
 
       address_havelevel[i] := false;
     END LOOP;
 

---RAISE WARNING '% %', NEW.place_id, NEW.rank_search;
+    NEW.importance := null;
+    select language||':'||title,importance from get_wikipedia_match(NEW.extratags, NEW.calculated_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;
+
+--RAISE WARNING 'before low level% %', NEW.place_id, NEW.rank_search;

 
     -- 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
 
     -- 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


@@ -1305,7 +1343,7 @@ BEGIN
       IF NEW.parent_place_id IS NULL AND NEW.osm_type = 'N' THEN
 
         -- Is this node part of a relation?
       IF NEW.parent_place_id IS NULL AND NEW.osm_type = 'N' THEN
 
         -- Is this node part of a relation?

-        FOR relation IN select * from planet_osm_rels where parts @> ARRAY[NEW.osm_id::integer] and members @> ARRAY['n'||NEW.osm_id]
+        FOR relation IN select * from planet_osm_rels where parts @> ARRAY[NEW.osm_id] and members @> ARRAY['n'||NEW.osm_id]

         LOOP
           -- At the moment we only process one type of relation - associatedStreet
           IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN
         LOOP
           -- At the moment we only process one type of relation - associatedStreet
           IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN


@@ -1321,7 +1359,7 @@ BEGIN
 
 --RAISE WARNING 'x1';
         -- Is this node part of a way?
 
 --RAISE WARNING 'x1';
         -- Is this node part of a way?

-        FOR way IN select id from planet_osm_ways where nodes @> ARRAY[NEW.osm_id::integer] LOOP
+        FOR way IN select id from planet_osm_ways where nodes @> ARRAY[NEW.osm_id] LOOP

 --RAISE WARNING '%', way;
         FOR location IN select * from placex where osm_type = 'W' and osm_id = way.id
         LOOP
 --RAISE WARNING '%', way;
         FOR location IN select * from placex where osm_type = 'W' and osm_id = way.id
         LOOP


@@ -1334,7 +1372,7 @@ BEGIN
 
           -- Is the WAY part of a relation
           IF NEW.parent_place_id IS NULL THEN
 
           -- Is the WAY part of a relation
           IF NEW.parent_place_id IS NULL THEN

-              FOR relation IN select * from planet_osm_rels where parts @> ARRAY[location.osm_id::integer] and members @> ARRAY['w'||location.osm_id]
+              FOR relation IN select * from planet_osm_rels where parts @> ARRAY[location.osm_id] and members @> ARRAY['w'||location.osm_id]

               LOOP
                 -- At the moment we only process one type of relation - associatedStreet
                 IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN
               LOOP
                 -- At the moment we only process one type of relation - associatedStreet
                 IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN


@@ -1379,7 +1417,7 @@ BEGIN
 
       IF NEW.parent_place_id IS NULL AND NEW.osm_type = 'W' THEN
         -- Is this way part of a relation?
 
       IF NEW.parent_place_id IS NULL AND NEW.osm_type = 'W' THEN
         -- Is this way part of a relation?

-        FOR relation IN select * from planet_osm_rels where parts @> ARRAY[NEW.osm_id::integer] and members @> ARRAY['w'||NEW.osm_id]
+        FOR relation IN select * from planet_osm_rels where parts @> ARRAY[NEW.osm_id] and members @> ARRAY['w'||NEW.osm_id]

         LOOP
           -- At the moment we only process one type of relation - associatedStreet
           IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN
         LOOP
           -- At the moment we only process one type of relation - associatedStreet
           IF relation.tags @> ARRAY['associatedStreet'] AND array_upper(relation.members, 1) IS NOT NULL THEN


@@ -1430,7 +1468,7 @@ BEGIN
 
         -- Get the details of the parent road
         select * from search_name where place_id = NEW.parent_place_id INTO location;
 
         -- Get the details of the parent road
         select * from search_name where place_id = NEW.parent_place_id INTO location;

-        NEW.country_code := location.country_code;
+        NEW.calculated_country_code := location.country_code;

 
 --RAISE WARNING '%', NEW.name;
         -- If there is no name it isn't searchable, don't bother to create a search record
 
 --RAISE WARNING '%', NEW.name;
         -- If there is no name it isn't searchable, don't bother to create a search record


@@ -1445,16 +1483,17 @@ BEGIN
         -- Just be happy with inheriting from parent road only
 
         IF NEW.rank_search <= 25 THEN
         -- Just be happy with inheriting from parent road only
 
         IF NEW.rank_search <= 25 THEN

-          result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.geometry);
+          result := add_location(NEW.place_id, NEW.calculated_country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.geometry);

         END IF;
 
         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);
+        result := insertSearchName(NEW.partition, NEW.place_id, NEW.calculated_country_code, name_vector, nameaddress_vector, NEW.rank_search, NEW.rank_address, NEW.importance, place_centroid);

 
         return NEW;
       END IF;
 
     END IF;
 
 
         return NEW;
       END IF;
 
     END IF;
 

+-- RAISE WARNING '  INDEXING Started:';

 -- RAISE WARNING '  INDEXING: %',NEW;
 
     IF NEW.osm_type = 'R' AND NEW.rank_search < 26 THEN
 -- RAISE WARNING '  INDEXING: %',NEW;
 
     IF NEW.osm_type = 'R' AND NEW.rank_search < 26 THEN


@@ -1462,10 +1501,11 @@ BEGIN
       -- see if we have any special relation members
       select members from planet_osm_rels where id = NEW.osm_id INTO relation_members;
 
       -- see if we have any special relation members
       select members from planet_osm_rels where id = NEW.osm_id INTO relation_members;
 

+-- RAISE WARNING 'get_osm_rel_members, label';

       FOR relMember IN select get_osm_rel_members(relation_members,ARRAY['label']) as member LOOP
 
       FOR relMember IN select get_osm_rel_members(relation_members,ARRAY['label']) as member LOOP
 

-        select * from placex where osm_type = upper(substring(relMember.member,1,1)) 
-          and osm_id = substring(relMember.member,2,10000)::integer order by rank_search desc limit 1 into linkedPlacex;
+        select * from placex where osm_type = upper(substring(relMember.member,1,1))::char(1) 
+          and osm_id = substring(relMember.member,2,10000)::bigint order by rank_search desc limit 1 into linkedPlacex;

 
         -- If we don't already have one use this as the centre point of the geometry
         IF NEW.centroid IS NULL THEN
 
         -- If we don't already have one use this as the centre point of the geometry
         IF NEW.centroid IS NULL THEN


@@ -1488,10 +1528,15 @@ BEGIN
 
         FOR relMember IN select get_osm_rel_members(relation_members,ARRAY['admin_center','admin_centre']) as member LOOP
 
 
         FOR relMember IN select get_osm_rel_members(relation_members,ARRAY['admin_center','admin_centre']) as member LOOP
 

-          select * from placex where osm_type = upper(substring(relMember.member,1,1)) 
-            and osm_id = substring(relMember.member,2,10000)::integer order by rank_search desc limit 1 into linkedPlacex;
+          select * from placex where osm_type = upper(substring(relMember.member,1,1))::char(1) 
+            and osm_id = substring(relMember.member,2,10000)::bigint order by rank_search desc limit 1 into linkedPlacex;
+
+          -- 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 make_standard_name(NEW.name->'name') = make_standard_name(linkedPlacex.name->'name') 
+            AND NEW.rank_search = linkedPlacex.rank_search THEN
+

 
 

-          IF NEW.name->'name' = linkedPlacex.name->'name' AND NEW.rank_search = linkedPlacex.rank_search THEN

             -- If we don't already have one use this as the centre point of the geometry
             IF NEW.centroid IS NULL THEN
               NEW.centroid := coalesce(linkedPlacex.centroid,st_centroid(linkedPlacex.geometry));
             -- If we don't already have one use this as the centre point of the geometry
             IF NEW.centroid IS NULL THEN
               NEW.centroid := coalesce(linkedPlacex.centroid,st_centroid(linkedPlacex.geometry));


@@ -1506,6 +1551,9 @@ BEGIN
 
             -- mark the linked place (excludes from search results)
             UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
             -- 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;

           END IF;
 
         END LOOP;
           END IF;
 
         END LOOP;


@@ -1513,15 +1561,16 @@ BEGIN
       END IF;
 
       -- not found one yet? how about doing a name search
       END IF;
 
       -- not found one yet? how about doing a name search

-      IF NEW.centroid IS NULL THEN
-        FOR linkedPlacex IN select placex.* from search_name join placex using (place_id) WHERE
-          search_name.name_vector @> ARRAY[getorcreate_name_id(make_standard_name(NEW.name->'name'))] 
-          AND search_name.search_rank = NEW.rank_search
-          AND search_name.place_id != NEW.place_id
-          AND osm_type = 'N'
-          AND NEW.name->'name' = placex.name->'name'
-          AND st_contains(NEW.geometry, placex.geometry)
+      IF NEW.centroid IS NULL AND (NEW.name->'name') is not null and make_standard_name(NEW.name->'name') != '' THEN
+
+        FOR linkedPlacex IN select placex.* from placex WHERE
+          make_standard_name(name->'name') = make_standard_name(NEW.name->'name')
+          AND placex.rank_search = NEW.rank_search
+          AND placex.place_id != NEW.place_id
+          AND placex.osm_type = 'N'::char(1) AND placex.rank_search < 26
+          AND st_covers(NEW.geometry, placex.geometry)

         LOOP
         LOOP

+

           -- If we don't already have one use this as the centre point of the geometry
           IF NEW.centroid IS NULL THEN
             NEW.centroid := coalesce(linkedPlacex.centroid,st_centroid(linkedPlacex.geometry));
           -- If we don't already have one use this as the centre point of the geometry
           IF NEW.centroid IS NULL THEN
             NEW.centroid := coalesce(linkedPlacex.centroid,st_centroid(linkedPlacex.geometry));


@@ -1537,6 +1586,8 @@ BEGIN
           -- mark the linked place (excludes from search results)
           UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
           -- 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;

         END LOOP;
       END IF;
 
         END LOOP;
       END IF;
 


@@ -1544,6 +1595,15 @@ BEGIN
         place_centroid := NEW.centroid;
       END IF;
 
         place_centroid := NEW.centroid;
       END IF;
 

+      -- Did we gain a wikipedia tag in the process? then we need to recalculate our importance
+      IF NEW.importance is null THEN
+        select language||':'||title,importance from get_wikipedia_match(NEW.extratags, NEW.calculated_country_code) INTO NEW.wikipedia,NEW.importance;
+      END IF;
+      -- Still null? how about looking it up by the node id
+      IF NEW.importance IS NULL THEN
+        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;
 
     NEW.parent_place_id = 0;
     END IF;
 
     NEW.parent_place_id = 0;


@@ -1573,27 +1633,40 @@ BEGIN
         END LOOP;
       END IF;
     END IF;
         END LOOP;
       END IF;
     END IF;

---RAISE WARNING 'ISIN: %', isin_tokens;
+-- RAISE WARNING 'ISIN: %', isin_tokens;

 
     -- Process area matches
 
     -- Process area matches

-    location_rank_search := 100;
+    location_rank_search := 0;

     location_distance := 0;
     location_distance := 0;

---RAISE WARNING '  getNearFeatures(%,''%'',%,''%'')',NEW.partition, place_centroid, search_maxrank, isin_tokens;
+    location_parent := NULL;
+    -- RAISE WARNING '  getNearFeatures(%,''%'',%,''%'')',NEW.partition, place_centroid, search_maxrank, isin_tokens;

     FOR location IN SELECT * from getNearFeatures(NEW.partition, place_centroid, search_maxrank, isin_tokens) LOOP
 
 --RAISE WARNING '  AREA: %',location;
 
     FOR location IN SELECT * from getNearFeatures(NEW.partition, place_centroid, search_maxrank, isin_tokens) LOOP
 
 --RAISE WARNING '  AREA: %',location;
 

-      IF location.rank_search < location_rank_search THEN
-        location_rank_search := location.rank_search;
+      IF location.rank_address != location_rank_search THEN
+        location_rank_search := location.rank_address;

         location_distance := location.distance * 1.5;
       END IF;
 
       IF location.distance < location_distance OR NOT location.isguess THEN
 
         location_distance := location.distance * 1.5;
       END IF;
 
       IF location.distance < location_distance OR NOT location.isguess THEN
 

+        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;
+
+        -- RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;

         -- Add it to the list of search terms
         nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);
         -- Add it to the list of search terms
         nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);

-        INSERT INTO place_addressline VALUES (NEW.place_id, location.place_id, true, NOT address_havelevel[location.rank_address], location.distance, location.rank_address); 
-        address_havelevel[location.rank_address] := true;
+        INSERT INTO place_addressline VALUES (NEW.place_id, location.place_id, true, location_isaddress, location.distance, location.rank_address);
+
+        IF location_isaddress THEN
+            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;
+        END IF;

 
 --RAISE WARNING '  Terms: (%) %',location, nameaddress_vector;
 
 
 --RAISE WARNING '  Terms: (%) %',location, nameaddress_vector;
 


@@ -1632,13 +1705,13 @@ BEGIN
     -- for long ways we should add search terms for the entire length
     IF st_length(NEW.geometry) > 0.05 THEN
 
     -- for long ways we should add search terms for the entire length
     IF st_length(NEW.geometry) > 0.05 THEN
 

-      location_rank_search := 100;
+      location_rank_search := 0;

       location_distance := 0;
 
       FOR location IN SELECT * from getNearFeatures(NEW.partition, NEW.geometry, search_maxrank, isin_tokens) LOOP
 
       location_distance := 0;
 
       FOR location IN SELECT * from getNearFeatures(NEW.partition, NEW.geometry, search_maxrank, isin_tokens) LOOP
 

-        IF location.rank_search < location_rank_search THEN
-          location_rank_search := location.rank_search;
+        IF location.rank_address != location_rank_search THEN
+          location_rank_search := location.rank_address;

           location_distance := location.distance * 1.5;
         END IF;
 
           location_distance := location.distance * 1.5;
         END IF;
 


@@ -1658,16 +1731,16 @@ BEGIN
     IF NEW.name IS NOT NULL THEN
 
       IF NEW.rank_search <= 25 THEN
     IF NEW.name IS NOT NULL THEN
 
       IF NEW.rank_search <= 25 THEN

-        result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.geometry);
+        result := add_location(NEW.place_id, NEW.calculated_country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.geometry);

       END IF;
 
       IF NEW.rank_search between 26 and 27 and NEW.class = 'highway' THEN
       END IF;
 
       IF NEW.rank_search between 26 and 27 and NEW.class = 'highway' THEN

-        result := insertLocationRoad(NEW.partition, NEW.place_id, NEW.country_code, NEW.geometry);
+        result := insertLocationRoad(NEW.partition, NEW.place_id, NEW.calculated_country_code, NEW.geometry);

       END IF;
 
       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);
+      result := insertSearchName(NEW.partition, NEW.place_id, NEW.calculated_country_code, name_vector, nameaddress_vector, NEW.rank_search, NEW.rank_address, NEW.importance, place_centroid);

 
 

---      INSERT INTO search_name values (NEW.place_id, NEW.rank_search, NEW.rank_search, 0, NEW.country_code, name_vector, nameaddress_vector, place_centroid);
+--      INSERT INTO search_name values (NEW.place_id, NEW.rank_search, NEW.rank_search, 0, NEW.calculated_country_code, name_vector, nameaddress_vector, place_centroid);

     END IF;
 
     -- If we've not managed to pick up a better one - default centroid
     END IF;
 
     -- If we've not managed to pick up a better one - default centroid


@@ -1688,34 +1761,50 @@ DECLARE
   b BOOLEAN;
   classtable TEXT;
 BEGIN
   b BOOLEAN;
   classtable TEXT;
 BEGIN

+  -- RAISE WARNING 'placex_delete % %',OLD.osm_type,OLD.osm_id;

 
   update placex set linked_place_id = null where linked_place_id = OLD.place_id;
 
   update placex set linked_place_id = null where linked_place_id = OLD.place_id;

+  --DEBUG: RAISE WARNING 'placex_delete:01 % %',OLD.osm_type,OLD.osm_id;

   update placex set indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;
   update placex set indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;

+  --DEBUG: RAISE WARNING 'placex_delete:02 % %',OLD.osm_type,OLD.osm_id;

 
   IF OLD.rank_address < 30 THEN
 
     -- mark everything linked to this place for re-indexing
 
   IF OLD.rank_address < 30 THEN
 
     -- mark everything linked to this place for re-indexing

+    --DEBUG: RAISE WARNING 'placex_delete:03 % %',OLD.osm_type,OLD.osm_id;

     UPDATE placex set indexed_status = 2 from place_addressline where address_place_id = OLD.place_id 
       and placex.place_id = place_addressline.place_id and indexed_status = 0;
 
     UPDATE placex set indexed_status = 2 from place_addressline where address_place_id = OLD.place_id 
       and placex.place_id = place_addressline.place_id and indexed_status = 0;
 

+    --DEBUG: RAISE WARNING 'placex_delete:04 % %',OLD.osm_type,OLD.osm_id;

     DELETE FROM place_addressline where address_place_id = OLD.place_id;
 
     DELETE FROM place_addressline where address_place_id = OLD.place_id;
 

+    --DEBUG: RAISE WARNING 'placex_delete:05 % %',OLD.osm_type,OLD.osm_id;

     b := deleteRoad(OLD.partition, OLD.place_id);
 
     b := deleteRoad(OLD.partition, OLD.place_id);
 

+    --DEBUG: RAISE WARNING 'placex_delete:06 % %',OLD.osm_type,OLD.osm_id;

     update placex set indexed_status = 2 where parent_place_id = OLD.place_id and indexed_status = 0;
     update placex set indexed_status = 2 where parent_place_id = OLD.place_id and indexed_status = 0;

+    --DEBUG: RAISE WARNING 'placex_delete:07 % %',OLD.osm_type,OLD.osm_id;

 
   END IF;
 
 
   END IF;
 

+  --DEBUG: RAISE WARNING 'placex_delete:08 % %',OLD.osm_type,OLD.osm_id;
+

   IF OLD.rank_address < 26 THEN
     b := deleteLocationArea(OLD.partition, OLD.place_id);
   END IF;
 
   IF OLD.rank_address < 26 THEN
     b := deleteLocationArea(OLD.partition, OLD.place_id);
   END IF;
 

+  --DEBUG: RAISE WARNING 'placex_delete:09 % %',OLD.osm_type,OLD.osm_id;
+

   IF OLD.name is not null THEN
     b := deleteSearchName(OLD.partition, OLD.place_id);
   END IF;
 
   IF OLD.name is not null THEN
     b := deleteSearchName(OLD.partition, OLD.place_id);
   END IF;
 

+  --DEBUG: RAISE WARNING 'placex_delete:10 % %',OLD.osm_type,OLD.osm_id;
+

   DELETE FROM place_addressline where place_id = OLD.place_id;
 
   DELETE FROM place_addressline where place_id = OLD.place_id;
 

+  --DEBUG: RAISE WARNING 'placex_delete:11 % %',OLD.osm_type,OLD.osm_id;
+

   -- remove from tables for special search
   classtable := 'place_classtype_' || OLD.class || '_' || OLD.type;
   SELECT count(*)>0 FROM pg_tables WHERE tablename = classtable INTO b;
   -- remove from tables for special search
   classtable := 'place_classtype_' || OLD.class || '_' || OLD.type;
   SELECT count(*)>0 FROM pg_tables WHERE tablename = classtable INTO b;


@@ -1723,6 +1812,8 @@ BEGIN
     EXECUTE 'DELETE FROM ' || classtable::regclass || ' WHERE place_id = $1' USING OLD.place_id;
   END IF;
 
     EXECUTE 'DELETE FROM ' || classtable::regclass || ' WHERE place_id = $1' USING OLD.place_id;
   END IF;
 

+  --DEBUG: RAISE WARNING 'placex_delete:12 % %',OLD.osm_type,OLD.osm_id;
+

   RETURN OLD;
 
 END;
   RETURN OLD;
 
 END;


@@ -1735,10 +1826,10 @@ DECLARE
   placeid BIGINT;
 BEGIN
 
   placeid BIGINT;
 BEGIN
 

---  RAISE WARNING 'delete: % % % %',OLD.osm_type,OLD.osm_id,OLD.class,OLD.type;
+  --DEBUG: RAISE WARNING 'delete: % % % %',OLD.osm_type,OLD.osm_id,OLD.class,OLD.type;

 
 

-  -- deleting large polygons can have a massive effect ont he system - require manual intervention to let them through
-  IF st_area(OLD.geometry) > 2 THEN
+  -- deleting large polygons can have a massive effect on the system - require manual intervention to let them through
+  IF st_area(OLD.geometry) > 2 and st_isvalid(OLD.geometry) THEN

     insert into import_polygon_delete values (OLD.osm_type,OLD.osm_id,OLD.class,OLD.type);
     RETURN NULL;
   END IF;
     insert into import_polygon_delete values (OLD.osm_type,OLD.osm_id,OLD.class,OLD.type);
     RETURN NULL;
   END IF;


@@ -1746,7 +1837,6 @@ BEGIN
   -- mark for delete
   UPDATE placex set indexed_status = 100 where osm_type = OLD.osm_type and osm_id = OLD.osm_id and class = OLD.class and type = OLD.type;
 
   -- mark for delete
   UPDATE placex set indexed_status = 100 where osm_type = OLD.osm_type and osm_id = OLD.osm_id and class = OLD.class and type = OLD.type;
 

---  delete from placex where osm_type = OLD.osm_type and osm_id = OLD.osm_id and class = OLD.class and type = OLD.type;

   RETURN OLD;
 
 END;
   RETURN OLD;
 
 END;


@@ -1765,11 +1855,12 @@ DECLARE
   partition INTEGER;
 BEGIN
 
   partition INTEGER;
 BEGIN
 

+  --DEBUG: RAISE WARNING '-----------------------------------------------------------------------------------';
+  --DEBUG: RAISE WARNING 'place_insert: % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,st_area(NEW.geometry);
+

   IF FALSE and NEW.osm_type = 'R' THEN
   IF FALSE and NEW.osm_type = 'R' THEN

-    RAISE WARNING '-----------------------------------------------------------------------------------';
-    RAISE WARNING 'place_insert: % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,st_area(NEW.geometry);

     select * from placex where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type = NEW.type INTO existingplacex;
     select * from placex where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type = NEW.type INTO existingplacex;

-    RAISE WARNING '%', existingplacex;
+    --DEBUG: RAISE WARNING '%', existingplacex;

   END IF;
 
   -- Just block these - lots and pointless
   END IF;
 
   -- Just block these - lots and pointless


@@ -1789,7 +1880,7 @@ BEGIN
 
   -- Patch in additional country names
   IF NEW.admin_level = 2 AND NEW.type = 'administrative' AND NEW.country_code is not null THEN
 
   -- Patch in additional country names
   IF NEW.admin_level = 2 AND NEW.type = 'administrative' AND NEW.country_code is not null THEN

-    select country_name.name || NEW.name from country_name where country_name.country_code = lower(NEW.country_code) INTO NEW.name;
+    select coalesce(country_name.name || NEW.name,NEW.name) from country_name where country_name.country_code = lower(NEW.country_code) INTO NEW.name;

   END IF;
     
   -- Have we already done this place?
   END IF;
     
   -- Have we already done this place?


@@ -1805,7 +1896,8 @@ BEGIN
     DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type not in ('postcode','house','houses');
   END IF;
 
     DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type not in ('postcode','house','houses');
   END IF;
 

---  RAISE WARNING 'Existing: %',existing.place_id;
+  --DEBUG: RAISE WARNING 'Existing: %',existing.osm_id;
+  --DEBUG: RAISE WARNING 'Existing PlaceX: %',existingplacex.place_id;

 
   -- Log and discard 
   IF existing.geometry is not null AND st_isvalid(existing.geometry) 
 
   -- Log and discard 
   IF existing.geometry is not null AND st_isvalid(existing.geometry) 


@@ -1822,29 +1914,11 @@ BEGIN
   DELETE from import_polygon_delete where osm_type = NEW.osm_type and osm_id = NEW.osm_id;
 
   -- To paraphrase, if there isn't an existing item, OR if the admin level has changed, OR if it is a major change in geometry
   DELETE from import_polygon_delete where osm_type = NEW.osm_type and osm_id = NEW.osm_id;
 
   -- To paraphrase, if there isn't an existing item, OR if the admin level has changed, OR if it is a major change in geometry

-  IF existing.osm_type IS NULL 
-     OR existingplacex.osm_type IS NULL
-     OR coalesce(existing.admin_level, 100) != coalesce(NEW.admin_level, 100) 
-     OR coalesce(existing.country_code, '') != coalesce(NEW.country_code, '')
-     OR (existing.geometry::text != NEW.geometry::text AND ST_Distance(ST_Centroid(existing.geometry),ST_Centroid(NEW.geometry)) > 0.01 AND NOT
-     (ST_GeometryType(existing.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon')))
-     THEN
-
---  IF existing.osm_type IS NULL THEN
---    RAISE WARNING 'no existing place';
---  END IF;
---  IF existingplacex.osm_type IS NULL THEN
---    RAISE WARNING 'no existing placex %', existingplacex;
---  END IF;
-
---    RAISE WARNING 'delete and replace';
+  IF existingplacex.osm_type IS NULL THEN

 
     IF existing.osm_type IS NOT NULL THEN
 
     IF existing.osm_type IS NOT NULL THEN

---      RAISE WARNING 'insert delete % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,ST_Distance(ST_Centroid(existing.geometry),ST_Centroid(NEW.geometry)),existing;
-      DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type = NEW.type;
-    END IF;   
-
---    RAISE WARNING 'delete and replace2';
+      DELETE from place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type = NEW.type;
+    END IF;

 
     -- No - process it as a new insertion (hopefully of low rank or it will be slow)
     insert into placex (osm_type, osm_id, class, type, name, admin_level, housenumber, 
 
     -- No - process it as a new insertion (hopefully of low rank or it will be slow)
     insert into placex (osm_type, osm_id, class, type, name, admin_level, housenumber, 


@@ -1864,7 +1938,7 @@ BEGIN
         ,NEW.geometry
         );
 
         ,NEW.geometry
         );
 

---    RAISE WARNING 'insert done % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
+    --DEBUG: RAISE WARNING 'insert done % % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type,NEW.name;

 
     RETURN NEW;
   END IF;
 
     RETURN NEW;
   END IF;


@@ -1907,13 +1981,13 @@ BEGIN
 
       -- re-index points that have moved in / out of the polygon, could be done as a single query but postgres gets the index usage wrong
       update placex set indexed_status = 2 where indexed_status = 0 and 
 
       -- re-index points that have moved in / out of the polygon, could be done as a single query but postgres gets the index usage wrong
       update placex set indexed_status = 2 where indexed_status = 0 and 

-          (ST_Contains(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry))
-          AND NOT (ST_Contains(existinggeometry, placex.geometry) OR ST_Intersects(existinggeometry, placex.geometry))
+          (st_covers(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry))
+          AND NOT (st_covers(existinggeometry, placex.geometry) OR ST_Intersects(existinggeometry, placex.geometry))

           AND rank_search > existingplacex.rank_search AND (rank_search < 28 or name is not null);
 
       update placex set indexed_status = 2 where indexed_status = 0 and 
           AND rank_search > existingplacex.rank_search AND (rank_search < 28 or name is not null);
 
       update placex set indexed_status = 2 where indexed_status = 0 and 

-          (ST_Contains(existinggeometry, placex.geometry) OR ST_Intersects(existinggeometry, placex.geometry))
-          AND NOT (ST_Contains(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry))
+          (st_covers(existinggeometry, placex.geometry) OR ST_Intersects(existinggeometry, placex.geometry))
+          AND NOT (st_covers(NEW.geometry, placex.geometry) OR ST_Intersects(NEW.geometry, placex.geometry))

           AND rank_search > existingplacex.rank_search AND (rank_search < 28 or name is not null);
 
     END IF;
           AND rank_search > existingplacex.rank_search AND (rank_search < 28 or name is not null);
 
     END IF;


@@ -1967,6 +2041,7 @@ BEGIN
      OR coalesce(existing.isin, '') != coalesce(NEW.isin, '')
      OR coalesce(existing.postcode, '') != coalesce(NEW.postcode, '')
      OR coalesce(existing.country_code, '') != coalesce(NEW.country_code, '')
      OR coalesce(existing.isin, '') != coalesce(NEW.isin, '')
      OR coalesce(existing.postcode, '') != coalesce(NEW.postcode, '')
      OR coalesce(existing.country_code, '') != coalesce(NEW.country_code, '')

+     OR coalesce(existing.admin_level, 15) != coalesce(NEW.admin_level, 15)

      OR existing.geometry::text != NEW.geometry::text
      THEN
 
      OR existing.geometry::text != NEW.geometry::text
      THEN
 


@@ -1994,10 +2069,6 @@ BEGIN
       geometry = NEW.geometry
       where place_id = existingplacex.place_id;
 
       geometry = NEW.geometry
       where place_id = existingplacex.place_id;
 

--- now done as part of insert
---    partition := get_partition(NEW.geometry, existingplacex.country_code);
---    result := update_location(partition, existingplacex.place_id, existingplacex.country_code, NEW.name, existingplacex.rank_search, existingplacex.rank_address, NEW.geometry);
-

   END IF;
 
   -- Abort the add (we modified the existing place instead)
   END IF;
 
   -- Abort the add (we modified the existing place instead)


@@ -2164,14 +2235,14 @@ BEGIN
   END IF;
 
   IF for_place_id IS NULL THEN
   END IF;
 
   IF for_place_id IS NULL THEN

-    select parent_place_id, country_code, housenumber, rank_address, postcode, name, class, type from placex 
+    select parent_place_id, calculated_country_code, housenumber, rank_address, postcode, name, class, type from placex 

       WHERE place_id = in_place_id and rank_address = 30 
       INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
 
   IF for_place_id IS NULL THEN
     for_place_id := in_place_id;
       WHERE place_id = in_place_id and rank_address = 30 
       INTO for_place_id, searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
 
   IF for_place_id IS NULL THEN
     for_place_id := in_place_id;

-    select country_code, housenumber, rank_address, postcode, null from placex where place_id = for_place_id 
+    select calculated_country_code, housenumber, rank_address, postcode, null from placex where place_id = for_place_id 

       INTO searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename;
   END IF;
 
       INTO searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename;
   END IF;
 


@@ -2184,13 +2255,13 @@ BEGIN
       CASE WHEN class = 'place' and type = 'postcode' THEN 'name' => postcode ELSE name END as name,
       class, type, admin_level, true as fromarea, true as isaddress,
       CASE WHEN rank_address = 0 THEN 100 WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address,
       CASE WHEN class = 'place' and type = 'postcode' THEN 'name' => postcode ELSE name END as name,
       class, type, admin_level, true as fromarea, 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
+      0 as distance, calculated_country_code

       from placex
       where place_id = for_place_id 
   LOOP
 --RAISE WARNING '%',location;
       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;
+    IF searchcountrycode IS NULL AND location.calculated_country_code IS NOT NULL THEN
+      searchcountrycode := location.calculated_country_code;

     END IF;
     IF searchpostcode IS NOT NULL and location.type = 'postcode' THEN
       location.isaddress := FALSE;
     END IF;
     IF searchpostcode IS NOT NULL and location.type = 'postcode' THEN
       location.isaddress := FALSE;


@@ -2217,17 +2288,17 @@ BEGIN
       CASE WHEN class = 'place' and type = 'postcode' THEN 'name' => postcode ELSE name END as name,
       class, 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,
       CASE WHEN class = 'place' and type = 'postcode' THEN 'name' => postcode ELSE name END as name,
       class, 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
+      distance,calculated_country_code

       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
       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 (placex.country_code IS NULL OR searchcountrycode IS NULL OR placex.country_code = searchcountrycode OR rank_address < 4)
+      and (placex.calculated_country_code IS NULL OR searchcountrycode IS NULL OR placex.calculated_country_code = searchcountrycode)

       order by rank_address desc,isaddress desc,fromarea desc,distance asc,rank_search desc
   LOOP
 --RAISE WARNING '%',location;
       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;
+    IF searchcountrycode IS NULL AND location.calculated_country_code IS NOT NULL THEN
+      searchcountrycode := location.calculated_country_code;

     END IF;
     IF searchpostcode IS NOT NULL and location.type = 'postcode' THEN
       location.isaddress := FALSE;
     END IF;
     IF searchpostcode IS NOT NULL and location.type = 'postcode' THEN
       location.isaddress := FALSE;


@@ -2683,4 +2754,178 @@ END;
 $$
 LANGUAGE plpgsql;
 
 $$
 LANGUAGE plpgsql;
 

+-- See: http://stackoverflow.com/questions/6410088/how-can-i-mimic-the-php-urldecode-function-in-postgresql
+CREATE OR REPLACE FUNCTION decode_url_part(p varchar) RETURNS varchar 
+  AS $$
+SELECT convert_from(CAST(E'\\x' || array_to_string(ARRAY(
+    SELECT CASE WHEN length(r.m[1]) = 1 THEN encode(convert_to(r.m[1], 'SQL_ASCII'), 'hex') ELSE substring(r.m[1] from 2 for 2) END
+    FROM regexp_matches($1, '%[0-9a-f][0-9a-f]|.', 'gi') AS r(m)
+), '') AS bytea), 'UTF8');
+$$ 
+LANGUAGE SQL IMMUTABLE STRICT;
+
+CREATE OR REPLACE FUNCTION catch_decode_url_part(p varchar) RETURNS varchar
+  AS $$
+DECLARE
+BEGIN
+  RETURN decode_url_part(p);
+EXCEPTION
+  WHEN others THEN return null;
+END;
+$$
+LANGUAGE plpgsql IMMUTABLE;
+
+DROP TYPE wikipedia_article_match CASCADE;
+create type wikipedia_article_match as (
+  language TEXT,
+  title TEXT,
+  importance FLOAT
+);
+
+CREATE OR REPLACE FUNCTION get_wikipedia_match(extratags HSTORE, country_code varchar(2)) RETURNS wikipedia_article_match
+  AS $$
+DECLARE
+  langs TEXT[];
+  i INT;
+  wiki_article TEXT;
+  wiki_article_title TEXT;
+  wiki_article_language TEXT;
+  result wikipedia_article_match;
+BEGIN
+  langs := ARRAY['english','country','ar','bg','ca','cs','da','de','en','es','eo','eu','fa','fr','ko','hi','hr','id','it','he','lt','hu','ms','nl','ja','no','pl','pt','kk','ro','ru','sk','sl','sr','fi','sv','tr','uk','vi','vo','war','zh'];
+  i := 1;
+  WHILE langs[i] IS NOT NULL LOOP
+    wiki_article := extratags->(case when langs[i] in ('english','country') THEN 'wikipedia' ELSE 'wikipedia:'||langs[i] END);
+    IF wiki_article is not null THEN
+      wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3}).wikipedia.org/wiki/',E'\\2:');
+      wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3}).wikipedia.org/w/index.php\\?title=',E'\\2:');
+      wiki_article := regexp_replace(wiki_article,E'^(.*?)/([a-z]{2,3})/wiki/',E'\\2:');
+      wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3})[=:]',E'\\2:');
+      wiki_article := replace(wiki_article,' ','_');
+      wiki_article_title := trim(split_part(wiki_article, ':', 2));
+      IF wiki_article_title IS NULL OR wiki_article_title = '' THEN
+        wiki_article_title := trim(wiki_article);
+        wiki_article_language := CASE WHEN langs[i] = 'english' THEN 'en' WHEN langs[i] = 'country' THEN get_country_language_code(country_code) ELSE langs[i] END;
+      ELSE
+        wiki_article_language := lower(trim(split_part(wiki_article, ':', 1)));
+      END IF;

 
 

+      select wikipedia_article.language,wikipedia_article.title,wikipedia_article.importance
+        from wikipedia_article 
+        where language = wiki_article_language and 
+        (title = wiki_article_title OR title = catch_decode_url_part(wiki_article_title) OR title = replace(catch_decode_url_part(wiki_article_title),E'\\',''))
+      UNION ALL
+      select wikipedia_article.language,wikipedia_article.title,wikipedia_article.importance
+        from wikipedia_redirect join wikipedia_article on (wikipedia_redirect.language = wikipedia_article.language and wikipedia_redirect.to_title = wikipedia_article.title)
+        where wikipedia_redirect.language = wiki_article_language and 
+        (from_title = wiki_article_title OR from_title = catch_decode_url_part(wiki_article_title) OR from_title = replace(catch_decode_url_part(wiki_article_title),E'\\',''))
+      order by importance desc limit 1 INTO result;
+
+      IF result.language is not null THEN
+        return result;
+      END IF;
+    END IF;
+    i := i + 1;
+  END LOOP;
+  RETURN NULL;
+END;
+$$
+LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT, maxdepth INTEGER) 
+  RETURNS SETOF GEOMETRY
+  AS $$
+DECLARE
+  xmin FLOAT;
+  ymin FLOAT;
+  xmax FLOAT;
+  ymax FLOAT;
+  xmid FLOAT;
+  ymid FLOAT;
+  secgeo GEOMETRY;
+  secbox GEOMETRY;
+  seg INTEGER;
+  geo RECORD;
+  area FLOAT;
+  remainingdepth INTEGER;
+  added INTEGER;
+  
+BEGIN
+
+--  RAISE WARNING 'quad_split_geometry: maxarea=%, depth=%',maxarea,maxdepth;
+
+  IF (ST_GeometryType(geometry) not in ('ST_Polygon','ST_MultiPolygon') OR NOT ST_IsValid(geometry)) THEN
+    RETURN NEXT geometry;
+    RETURN;
+  END IF;
+
+  remainingdepth := maxdepth - 1;
+  area := ST_AREA(geometry);
+  IF remainingdepth < 1 OR area < maxarea THEN
+    RETURN NEXT geometry;
+    RETURN;
+  END IF;
+
+  xmin := st_xmin(geometry);
+  xmax := st_xmax(geometry);
+  ymin := st_ymin(geometry);
+  ymax := st_ymax(geometry);
+  secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(ymin,xmin),ST_Point(ymax,xmax)),4326);
+
+  -- if the geometry completely covers the box don't bother to slice any more
+  IF ST_AREA(secbox) = area THEN
+    RETURN NEXT geometry;
+    RETURN;
+  END IF;
+
+  xmid := (xmin+xmax)/2;
+  ymid := (ymin+ymax)/2;
+
+  added := 0;
+  FOR seg IN 1..4 LOOP
+
+    IF seg = 1 THEN
+      secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymin),ST_Point(xmid,ymid)),4326);
+    END IF;
+    IF seg = 2 THEN
+      secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymid),ST_Point(xmid,ymax)),4326);
+    END IF;
+    IF seg = 3 THEN
+      secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymin),ST_Point(xmax,ymid)),4326);
+    END IF;
+    IF seg = 4 THEN
+      secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymid),ST_Point(xmax,ymax)),4326);
+    END IF;
+
+    IF st_intersects(geometry, secbox) THEN
+      secgeo := st_intersection(geometry, secbox);
+      IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
+        FOR geo IN select quad_split_geometry(secgeo, maxarea, remainingdepth) as geom LOOP
+          IF NOT ST_IsEmpty(geo.geom) AND ST_GeometryType(geo.geom) in ('ST_Polygon','ST_MultiPolygon') THEN
+            added := added + 1;
+            RETURN NEXT geo.geom;
+          END IF;
+        END LOOP;
+      END IF;
+    END IF;
+  END LOOP;
+
+  RETURN;
+END;
+$$
+LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION split_geometry(geometry GEOMETRY) 
+  RETURNS SETOF GEOMETRY
+  AS $$
+DECLARE
+  geo RECORD;
+BEGIN
+  -- 10000000000 is ~~ 1x1 degree
+  FOR geo IN select quad_split_geometry(geometry, 0.25, 20) as geom LOOP
+    RETURN NEXT geo.geom;
+  END LOOP;
+  RETURN;
+END;
+$$
+LANGUAGE plpgsql;