raise warning when invalid geomery is inserted

[nominatim.git] / sql / functions.sql

diff --git a/sql/functions.sql b/sql/functions.sql
index 73790353059a683cdfec0db2f101e1dbc5935f4e..43ab4fffb04251e7690e117bc00862179ec97170 100644 (file)
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -547,7 +547,7 @@ BEGIN
 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
 
   -- Try for a OSM polygon
 -- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
 
   -- Try for a OSM polygon

-  FOR nearcountry IN select country_code from location_area_country where country_code is not null and not isguess and st_covers(geometry, place_centre) limit 1
+  FOR nearcountry IN select country_code from location_area_country where country_code is not null and st_covers(geometry, place_centre) limit 1

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


@@ -768,6 +768,28 @@ END;
 $$
 LANGUAGE plpgsql;
 
 $$
 LANGUAGE plpgsql;
 

+CREATE OR REPLACE FUNCTION osmline_reinsert(node_id BIGINT, geom GEOMETRY)
+  RETURNS BOOLEAN
+  AS $$
+DECLARE
+  existingline RECORD;
+BEGIN
+   SELECT w.id FROM planet_osm_ways w, location_property_osmline p
+     WHERE p.linegeo && geom and p.osm_id = w.id and p.indexed_status = 0
+           and node_id = any(w.nodes) INTO existingline;
+
+   IF existingline.id is not NULL THEN
+       DELETE FROM location_property_osmline WHERE osm_id = existingline.id;
+       INSERT INTO location_property_osmline (osm_id, address, linegeo)
+         SELECT osm_id, address, geometry FROM place
+           WHERE osm_type = 'W' and osm_id = existingline.id;
+   END IF;
+
+   RETURN true;
+END;
+$$
+LANGUAGE plpgsql;
+

 
 CREATE OR REPLACE FUNCTION osmline_insert() RETURNS TRIGGER
   AS $$
 
 CREATE OR REPLACE FUNCTION osmline_insert() RETURNS TRIGGER
   AS $$


@@ -887,11 +909,7 @@ BEGIN
     END IF;
 
     -- some postcorrections
     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
+    IF NEW.class = 'waterway' AND NEW.osm_type = 'R' THEN

         -- Slightly promote waterway relations so that they are processed
         -- before their members.
         NEW.rank_search := NEW.rank_search - 1;
         -- Slightly promote waterway relations so that they are processed
         -- before their members.
         NEW.rank_search := NEW.rank_search - 1;


@@ -908,16 +926,14 @@ BEGIN
     NEW.country_code := NULL;
   END IF;
 
     NEW.country_code := NULL;
   END IF;
 

--- Block import below rank 22
---  IF NEW.rank_search > 22 THEN
---    RETURN NULL;
---  END IF;
-

   --DEBUG: RAISE WARNING 'placex_insert:END: % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
   RETURN NEW; -- %DIFFUPDATES% The following is not needed until doing diff updates, and slows the main index process down
 
   --DEBUG: RAISE WARNING 'placex_insert:END: % % % %',NEW.osm_type,NEW.osm_id,NEW.class,NEW.type;
 
   RETURN NEW; -- %DIFFUPDATES% The following is not needed until doing diff updates, and slows the main index process down
 

-  IF NEW.rank_address > 0 THEN
+  IF NEW.osm_type = 'N' and NEW.rank_search > 28 THEN
+      -- might be part of an interpolation
+      result := osmline_reinsert(NEW.osm_id, NEW.geometry);
+  ELSEIF NEW.rank_address > 0 THEN

     IF (ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_IsValid(NEW.geometry)) THEN
       -- Performance: We just can't handle re-indexing for country level changes
       IF st_area(NEW.geometry) < 1 THEN
     IF (ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_IsValid(NEW.geometry)) THEN
       -- Performance: We just can't handle re-indexing for country level changes
       IF st_area(NEW.geometry) < 1 THEN


@@ -1162,6 +1178,7 @@ TRIGGER
 DECLARE
 
   place_centroid GEOMETRY;
 DECLARE
 
   place_centroid GEOMETRY;

+  near_centroid GEOMETRY;

 
   search_maxdistance FLOAT[];
   search_mindistance FLOAT[];
 
   search_maxdistance FLOAT[];
   search_mindistance FLOAT[];


@@ -1238,6 +1255,8 @@ BEGIN
   END IF;
 
   --DEBUG: RAISE WARNING 'Copy over address tags';
   END IF;
 
   --DEBUG: RAISE WARNING 'Copy over address tags';

+  -- housenumber is a computed field, so start with an empty value
+  NEW.housenumber := NULL;

   IF NEW.address is not NULL THEN
       IF NEW.address ? 'conscriptionnumber' THEN
         i := getorcreate_housenumber_id(make_standard_name(NEW.address->'conscriptionnumber'));
   IF NEW.address is not NULL THEN
       IF NEW.address ? 'conscriptionnumber' THEN
         i := getorcreate_housenumber_id(make_standard_name(NEW.address->'conscriptionnumber'));


@@ -1266,6 +1285,8 @@ BEGIN
   -- Speed up searches - just use the centroid of the feature
   -- cheaper but less acurate
   place_centroid := ST_PointOnSurface(NEW.geometry);
   -- Speed up searches - just use the centroid of the feature
   -- cheaper but less acurate
   place_centroid := ST_PointOnSurface(NEW.geometry);

+  -- For searching near features rather use the centroid
+  near_centroid := ST_Envelope(NEW.geometry);

   NEW.centroid := null;
   NEW.postcode := null;
   --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(place_centroid);
   NEW.centroid := null;
   NEW.postcode := null;
   --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(place_centroid);


@@ -1337,10 +1358,9 @@ BEGIN
   END LOOP;
 
   NEW.importance := null;
   END LOOP;
 
   NEW.importance := null;

-  select language||':'||title,importance from get_wikipedia_match(NEW.extratags, NEW.country_code) INTO NEW.wikipedia,NEW.importance;
-  IF NEW.importance IS NULL THEN
-    select language||':'||title,importance from wikipedia_article where osm_type = NEW.osm_type and osm_id = NEW.osm_id order by importance desc limit 1 INTO NEW.wikipedia,NEW.importance;
-  END IF;
+  SELECT wikipedia, importance
+    FROM compute_importance(NEW.extratags, NEW.country_code, NEW.osm_type, NEW.osm_id)
+    INTO NEW.wikipedia,NEW.importance;

 
 --DEBUG: RAISE WARNING 'Importance computed from wikipedia: %', NEW.importance;
 
 
 --DEBUG: RAISE WARNING 'Importance computed from wikipedia: %', NEW.importance;
 


@@ -1396,7 +1416,7 @@ BEGIN
     IF NEW.parent_place_id IS NULL AND addr_street IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_street));
       IF address_street_word_ids IS NOT NULL THEN
     IF NEW.parent_place_id IS NULL AND addr_street IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_street));
       IF address_street_word_ids IS NOT NULL THEN

-        SELECT place_id from getNearestNamedRoadFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+        SELECT place_id from getNearestNamedRoadFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;

       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:street (%)', NEW.parent_place_id;
       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:street (%)', NEW.parent_place_id;


@@ -1404,7 +1424,7 @@ BEGIN
     IF NEW.parent_place_id IS NULL AND addr_place IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_place));
       IF address_street_word_ids IS NOT NULL THEN
     IF NEW.parent_place_id IS NULL AND addr_place IS NOT NULL THEN
       address_street_word_ids := get_name_ids(make_standard_name(addr_place));
       IF address_street_word_ids IS NOT NULL THEN

-        SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+        SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;

       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:place (%)', NEW.parent_place_id;
       END IF;
     END IF;
     --DEBUG: RAISE WARNING 'Checked for addr:place (%)', NEW.parent_place_id;


@@ -1439,7 +1459,7 @@ BEGIN
           IF location.address ? 'street' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'street'));
             IF address_street_word_ids IS NOT NULL THEN
           IF location.address ? 'street' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'street'));
             IF address_street_word_ids IS NOT NULL THEN

-              SELECT place_id from getNearestNamedRoadFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+              SELECT place_id from getNearestNamedRoadFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;

               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;
               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;


@@ -1448,7 +1468,7 @@ BEGIN
           IF location.address ? 'place' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'place'));
             IF address_street_word_ids IS NOT NULL THEN
           IF location.address ? 'place' THEN
             address_street_word_ids := get_name_ids(make_standard_name(location.address->'place'));
             IF address_street_word_ids IS NOT NULL THEN

-              SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, place_centroid, address_street_word_ids) INTO NEW.parent_place_id;
+              SELECT place_id from getNearestNamedPlaceFeature(NEW.partition, near_centroid, address_street_word_ids) INTO NEW.parent_place_id;

               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;
               EXIT WHEN NEW.parent_place_id is not NULL;
             END IF;
           END IF;


@@ -1477,7 +1497,7 @@ BEGIN
 
     -- Still nothing, just use the nearest road
     IF NEW.parent_place_id IS NULL THEN
 
     -- Still nothing, just use the nearest road
     IF NEW.parent_place_id IS NULL THEN

-      SELECT place_id FROM getNearestRoadFeature(NEW.partition, place_centroid) INTO NEW.parent_place_id;
+      SELECT place_id FROM getNearestRoadFeature(NEW.partition, near_centroid) INTO NEW.parent_place_id;

     END IF;
     --DEBUG: RAISE WARNING 'Checked for nearest way (%)', NEW.parent_place_id;
 
     END IF;
     --DEBUG: RAISE WARNING 'Checked for nearest way (%)', NEW.parent_place_id;
 


@@ -1500,7 +1520,7 @@ BEGIN
              NEW.postcode := location.postcode;
           END IF;
           IF NEW.postcode is null THEN
              NEW.postcode := location.postcode;
           END IF;
           IF NEW.postcode is null THEN

-            NEW.postcode := get_nearest_postcode(NEW.country_code, place_centroid);
+            NEW.postcode := get_nearest_postcode(NEW.country_code, NEW.geometry);

           END IF;
       END IF;
 
           END IF;
       END IF;
 


@@ -1579,9 +1599,10 @@ BEGIN
           -- mark the linked place (excludes from search results)
           UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
           -- mark the linked place (excludes from search results)
           UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 

-          -- keep a note of the node id in case we need it for wikipedia in a bit
-          linked_node_id := linkedPlacex.osm_id;
-          select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+          select wikipedia, importance
+            FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                    'N', linkedPlacex.osm_id)
+            INTO linked_wikipedia,linked_importance;

           --DEBUG: RAISE WARNING 'Linked label member';
         END LOOP;
 
           --DEBUG: RAISE WARNING 'Linked label member';
         END LOOP;
 


@@ -1618,9 +1639,10 @@ BEGIN
               -- mark the linked place (excludes from search results)
               UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
               -- mark the linked place (excludes from search results)
               UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 

-              -- keep a note of the node id in case we need it for wikipedia in a bit
-              linked_node_id := linkedPlacex.osm_id;
-              select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+              select wikipedia, importance
+                FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                        'N', linkedPlacex.osm_id)
+                INTO linked_wikipedia,linked_importance;

               --DEBUG: RAISE WARNING 'Linked admin_center';
             END IF;
 
               --DEBUG: RAISE WARNING 'Linked admin_center';
             END IF;
 


@@ -1663,9 +1685,10 @@ BEGIN
         -- mark the linked place (excludes from search results)
         UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 
         -- mark the linked place (excludes from search results)
         UPDATE placex set linked_place_id = NEW.place_id where place_id = linkedPlacex.place_id;
 

-        -- keep a note of the node id in case we need it for wikipedia in a bit
-        linked_node_id := linkedPlacex.osm_id;
-        select language||':'||title,importance from get_wikipedia_match(linkedPlacex.extratags, NEW.country_code) INTO linked_wikipedia,linked_importance;
+        select wikipedia, importance
+          FROM compute_importance(linkedPlacex.extratags, NEW.country_code,
+                                  'N', linkedPlacex.osm_id)
+          INTO linked_wikipedia,linked_importance;

         --DEBUG: RAISE WARNING 'Linked named place';
       END LOOP;
     END IF;
         --DEBUG: RAISE WARNING 'Linked named place';
       END LOOP;
     END IF;


@@ -1693,13 +1716,6 @@ BEGIN
         (NEW.importance is null or NEW.importance < linked_importance) THEN
         NEW.importance = linked_importance;
     END IF;
         (NEW.importance is null or NEW.importance < linked_importance) THEN
         NEW.importance = linked_importance;
     END IF;

-
-    -- Still null? how about looking it up by the node id
-    IF NEW.importance IS NULL THEN
-      --DEBUG: RAISE WARNING 'Looking up importance by linked node id';
-      select language||':'||title,importance from wikipedia_article where osm_type = 'N'::char(1) and osm_id = linked_node_id order by importance desc limit 1 INTO NEW.wikipedia,NEW.importance;
-    END IF;
-

   END IF;
 
   -- make sure all names are in the word table
   END IF;
 
   -- make sure all names are in the word table


@@ -1803,7 +1819,7 @@ BEGIN
 
       -- RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;
       -- Add it to the list of search terms
 
       -- RAISE WARNING '% isaddress: %', location.place_id, location_isaddress;
       -- Add it to the list of search terms

-      IF NOT %REVERSE-ONLY% AND location.rank_search > 4 THEN
+      IF NOT %REVERSE-ONLY% THEN

           nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);
       END IF;
       INSERT INTO place_addressline (place_id, address_place_id, fromarea, isaddress, distance, cached_rank_address)
           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)


@@ -2004,7 +2020,7 @@ 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  
     INSERT INTO import_polygon_error (osm_type, osm_id, class, type, name, country_code, updated, errormessage, prevgeometry, newgeometry)
       VALUES (NEW.osm_type, NEW.osm_id, NEW.class, NEW.type, NEW.name, NEW.address->'country', now(), ST_IsValidReason(NEW.geometry), null, NEW.geometry);
   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  
     INSERT INTO import_polygon_error (osm_type, osm_id, class, type, name, country_code, updated, errormessage, prevgeometry, newgeometry)
       VALUES (NEW.osm_type, NEW.osm_id, NEW.class, NEW.type, NEW.name, NEW.address->'country', now(), ST_IsValidReason(NEW.geometry), null, NEW.geometry);

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

     RETURN null;
   END IF;
 
     RETURN null;
   END IF;
 


@@ -2204,12 +2220,13 @@ BEGIN
         indexed_status = 2,
         geometry = NEW.geometry
         where place_id = existingplacex.place_id;
         indexed_status = 2,
         geometry = NEW.geometry
         where place_id = existingplacex.place_id;

-

       -- if a node(=>house), which is part of a interpolation line, changes (e.g. the street attribute) => mark this line for reparenting 
       -- (already here, because interpolation lines are reindexed before nodes, so in the second call it would be too late)
       -- if a node(=>house), which is part of a interpolation line, changes (e.g. the street attribute) => mark this line for reparenting 
       -- (already here, because interpolation lines are reindexed before nodes, so in the second call it would be too late)

-      IF NEW.osm_type='N' and NEW.class='place' and NEW.type='house' THEN
-          -- Is this node part of an interpolation line? search for it in location_property_osmline and mark the interpolation line for reparenting
-          update location_property_osmline p set indexed_status = 2 from planet_osm_ways w where p.linegeo && NEW.geometry and p.osm_id = w.id and NEW.osm_id = any(w.nodes);
+      IF NEW.osm_type='N'
+         and (coalesce(existing.address, ''::hstore) != coalesce(NEW.address, ''::hstore)
+             or existing.geometry::text != NEW.geometry::text)
+      THEN
+          result:= osmline_reinsert(NEW.osm_id, NEW.geometry);

       END IF;
 
       -- linked places should get potential new naming and addresses
       END IF;
 
       -- linked places should get potential new naming and addresses


@@ -2318,6 +2335,7 @@ DECLARE
   searchhousename HSTORE;
   searchrankaddress INTEGER;
   searchpostcode TEXT;
   searchhousename HSTORE;
   searchrankaddress INTEGER;
   searchpostcode TEXT;

+  postcode_isaddress BOOL;

   searchclass TEXT;
   searchtype TEXT;
   countryname HSTORE;
   searchclass TEXT;
   searchtype TEXT;
   countryname HSTORE;


@@ -2325,6 +2343,8 @@ 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.
 
   -- The place ein question might not have a direct entry in place_addressline.
   -- Look for the parent of such places then and save if in for_place_id.
 

+  postcode_isaddress := true;
+

   -- first query osmline (interpolation lines)
   IF in_housenumber >= 0 THEN
     SELECT parent_place_id, country_code, in_housenumber::text, 30, postcode,
   -- first query osmline (interpolation lines)
   IF in_housenumber >= 0 THEN
     SELECT parent_place_id, country_code, in_housenumber::text, 30, postcode,


@@ -2361,7 +2381,7 @@ BEGIN
 
   -- postcode table
   IF for_place_id IS NULL THEN
 
   -- postcode table
   IF for_place_id IS NULL THEN

-    SELECT parent_place_id, country_code, rank_address, postcode, 'place', 'postcode'
+    SELECT parent_place_id, country_code, rank_search, postcode, 'place', 'postcode'

       FROM location_postcode
       WHERE place_id = in_place_id
       INTO for_place_id, searchcountrycode, searchrankaddress, searchpostcode,
       FROM location_postcode
       WHERE place_id = in_place_id
       INTO for_place_id, searchcountrycode, searchrankaddress, searchpostcode,


@@ -2424,7 +2444,7 @@ BEGIN
     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,
     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,
+           admin_level, fromarea, isaddress and linked_place_id is NULL as 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)
            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)


@@ -2441,7 +2461,10 @@ BEGIN
       searchcountrycode := location.country_code;
     END IF;
     IF location.type in ('postcode', 'postal_code') THEN
       searchcountrycode := location.country_code;
     END IF;
     IF location.type in ('postcode', 'postal_code') THEN

-      location.isaddress := FALSE;
+      postcode_isaddress := false;
+      IF location.osm_type != 'R' THEN
+        location.isaddress := FALSE;
+      END IF;

     END IF;
     countrylocation := ROW(location.place_id, location.osm_type, location.osm_id,
                            location.name, location.class, location.type,
     END IF;
     countrylocation := ROW(location.place_id, location.osm_type, location.osm_id,
                            location.name, location.class, location.type,


@@ -2485,7 +2508,7 @@ BEGIN
 
   IF searchpostcode IS NOT NULL THEN
     location := ROW(null, null, null, hstore('ref', searchpostcode), 'place',
 
   IF searchpostcode IS NOT NULL THEN
     location := ROW(null, null, null, hstore('ref', searchpostcode), 'place',

-                    'postcode', null, true, true, 5, 0)::addressline;
+                    'postcode', null, false, postcode_isaddress, 5, 0)::addressline;

     RETURN NEXT location;
   END IF;
 
     RETURN NEXT location;
   END IF;
 


@@ -2599,7 +2622,7 @@ END;
 $$
 LANGUAGE plpgsql IMMUTABLE;
 
 $$
 LANGUAGE plpgsql IMMUTABLE;
 

-DROP TYPE wikipedia_article_match CASCADE;
+DROP TYPE IF EXISTS wikipedia_article_match CASCADE;

 create type wikipedia_article_match as (
   language TEXT,
   title TEXT,
 create type wikipedia_article_match as (
   language TEXT,
   title TEXT,


@@ -2656,6 +2679,42 @@ END;
 $$
 LANGUAGE plpgsql;
 
 $$
 LANGUAGE plpgsql;
 

+DROP TYPE IF EXISTS place_importance CASCADE;
+create type place_importance as (
+  importance FLOAT,
+  wikipedia TEXT
+);
+
+CREATE OR REPLACE FUNCTION compute_importance(extratags HSTORE, country_code varchar(2), osm_type varchar(1), osm_id BIGINT)
+  RETURNS place_importance
+  AS $$
+DECLARE
+  match RECORD;
+  result place_importance;
+BEGIN
+  FOR match IN SELECT * FROM get_wikipedia_match(extratags, country_code)
+               WHERE language is not NULL
+  LOOP
+    result.importance := match.importance;
+    result.wikipedia := match.language || ':' || match.title;
+    RETURN result;
+  END LOOP;
+
+  IF extratags ? 'wikidata' THEN
+    FOR match IN SELECT * FROM wikipedia_article
+                  WHERE wd_page_title = extratags->'wikidata'
+                  ORDER BY language = 'en' DESC, langcount DESC LIMIT 1 LOOP
+      result.importance := match.importance;
+      result.wikipedia := match.language || ':' || match.title;
+      RETURN result;
+    END LOOP;
+  END IF;
+
+  RETURN null;
+END;
+$$
+LANGUAGE plpgsql;
+

 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT, maxdepth INTEGER) 
   RETURNS SETOF GEOMETRY
   AS $$
 CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT, maxdepth INTEGER) 
   RETURNS SETOF GEOMETRY
   AS $$