add small penalty for special searches

[nominatim.git] / sql / functions.sql

diff --git a/sql/functions.sql b/sql/functions.sql
index 5179195bb740cdef8bbfcec0b546fc5d00870b50..929e5376c4665a2a22fd81e625af837327153718 100644 (file)
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -823,9 +823,13 @@ BEGIN
 
       FOR nodeidpos in 1..array_upper(waynodes, 1) LOOP
 
-        select min(place_id) from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT and type = 'house' INTO search_place_id;
+        -- If there is a place of a type other than place/house, use that because
+        -- it is guaranteed to be the original node. For place/house types use the
+        -- one with the smallest id because the original node was created first.
+        -- Ignore all nodes marked for deletion. (Might happen when the type changes.)
+        select place_id from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT and indexed_status < 100 order by (type = 'house'),place_id limit 1 INTO search_place_id;
         IF search_place_id IS NULL THEN
-          -- null record of right type
+          -- if no such node exists, create a record of the right type
           select * from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT 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
@@ -890,7 +894,7 @@ BEGIN
                 -- ideally postcodes should move up to the way
                 insert into placex (osm_type, osm_id, class, type, admin_level, housenumber, street, addr_place, isin, postcode,
                   country_code, parent_place_id, rank_address, rank_search, indexed_status, geometry)
-                  values ('N',prevnode.osm_id, prevnode.class, prevnode.type, prevnode.admin_level, housenum, prevnode.street, prevnode.addr_place, prevnode.isin, coalesce(prevnode.postcode, defpostalcode),
+                  values ('N',prevnode.osm_id, 'place', 'house', prevnode.admin_level, housenum, prevnode.street, prevnode.addr_place, prevnode.isin, coalesce(prevnode.postcode, defpostalcode),
                   prevnode.country_code, prevnode.parent_place_id, prevnode.rank_address, prevnode.rank_search, 1, ST_Line_Interpolate_Point(linegeo, (housenum::float-orginalstartnumber::float)/originalnumberrange::float));
                 newpoints := newpoints + 1;
 --RAISE WARNING 'interpolation number % % ',prevnode.place_id,housenum;
@@ -1090,10 +1094,10 @@ BEGIN
       ELSEIF NEW.type in ('national_park') THEN
         NEW.rank_search := 18;
         NEW.rank_address := 18;
-      ELSEIF NEW.type in ('suburb','croft','subdivision') THEN
+      ELSEIF NEW.type in ('suburb','croft','subdivision','isolated_dwelling') THEN
         NEW.rank_search := 20;
         NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('farm','locality','islet','isolated_dwelling','mountain_pass') THEN
+      ELSEIF NEW.type in ('farm','locality','islet','mountain_pass') THEN
         NEW.rank_search := 20;
         NEW.rank_address := 0;
         -- Irish townlands, tagged as place=locality and locality=townland
@@ -1353,13 +1357,26 @@ BEGIN
     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));
+    IF NEW.rank_search = 4 THEN
+      -- for countries, believe the mapped country code,
+      -- so that we remain in the right partition if the boundaries
+      -- suddenly expand.
+      NEW.partition := get_partition(place_centroid, lower(NEW.country_code));
+      IF NEW.partition = 0 THEN
+        NEW.calculated_country_code := lower(get_country_code(place_centroid));
+        NEW.partition := get_partition(place_centroid, NEW.calculated_country_code);
+      ELSE
+        NEW.calculated_country_code := lower(NEW.country_code);
+      END IF;
     ELSE
-      NEW.calculated_country_code := NULL;
+      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);
     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
@@ -1672,6 +1689,11 @@ BEGIN
         END IF;
       END IF;
 
+    END IF;
+
+    -- Name searches can be done for ways as well as relations
+    IF NEW.osm_type in ('W','R') AND NEW.rank_search < 26 THEN
+
       -- not found one yet? how about doing a name search
       IF NEW.centroid IS NULL AND (NEW.name->'name') is not null and make_standard_name(NEW.name->'name') != '' THEN
 
@@ -3082,10 +3104,10 @@ BEGIN
           diameter := 0.001; -- 50 to 100 meters
         END IF;
         IF diameter > 0 THEN
-          IF NEW.rank_search >= 26 THEN
+          IF rank >= 26 THEN
             -- roads may cause reparenting for >27 rank places
             update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter);
-          ELSEIF NEW.rank_search >= 16 THEN
+          ELSEIF rank >= 16 THEN
             -- up to rank 16, street-less addresses may need reparenting
             update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter) and (rank_search < 28 or name is not null or addr_place is not null);
           ELSE