Merge pull request #1936 from lonvia/tweeking-of-ranks

[nominatim.git] / sql / functions / placex_triggers.sql

diff --git a/sql/functions/placex_triggers.sql b/sql/functions/placex_triggers.sql
index d9a65ecf6d1276981255691607466457f203d366..3ddb97c04240225d87345360bbddf7e3ddbd52d7 100644 (file)
--- a/sql/functions/placex_triggers.sql
+++ b/sql/functions/placex_triggers.sql
@@ -92,7 +92,7 @@ BEGIN
     END IF;
 
     IF fallback THEN
-      IF ST_Area(bbox) < 0.01 THEN
+      IF ST_Area(bbox) < 0.005 THEN
         -- for smaller features get the nearest road
         SELECT getNearestRoadPlaceId(poi_partition, bbox) INTO parent_place_id;
         --DEBUG: RAISE WARNING 'Checked for nearest way (%)', parent_place_id;
@@ -534,6 +534,7 @@ DECLARE
 
   centroid GEOMETRY;
   parent_address_level SMALLINT;
+  place_address_level SMALLINT;
 
   addr_street TEXT;
   addr_place TEXT;
@@ -573,11 +574,18 @@ BEGIN
          where linked_place_id = NEW.place_id;
   -- update not necessary for osmline, cause linked_place_id does not exist
 
+  NEW.extratags := NEW.extratags - 'linked_place'::TEXT;
+
   IF NEW.linked_place_id is not null THEN
     --DEBUG: RAISE WARNING 'place already linked to %', NEW.linked_place_id;
     RETURN NEW;
   END IF;
 
+  -- Speed up searches - just use the centroid of the feature
+  -- cheaper but less acurate
+  NEW.centroid := ST_PointOnSurface(NEW.geometry);
+  --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(NEW.centroid);
+
   -- recompute the ranks, they might change when linking changes
   SELECT * INTO NEW.rank_search, NEW.rank_address
     FROM compute_place_rank(NEW.country_code,
@@ -588,10 +596,16 @@ BEGIN
                             (NEW.extratags->'capital') = 'yes',
                             NEW.address->'postcode');
   -- We must always increase the address level relative to the admin boundary.
-  IF NEW.class = 'boundary' and NEW.type = 'administrative' THEN
-    parent_address_level := get_parent_address_level(NEW.geometry, NEW.admin_level);
+  IF NEW.class = 'boundary' and NEW.type = 'administrative'
+     and NEW.osm_type = 'R' and NEW.rank_address > 0
+  THEN
+    parent_address_level := get_parent_address_level(NEW.centroid, NEW.admin_level);
     IF parent_address_level >= NEW.rank_address THEN
-      NEW.rank_address := parent_address_level + 2;
+      IF parent_address_level >= 24 THEN
+        NEW.rank_address := 25;
+      ELSE
+        NEW.rank_address := parent_address_level + 2;
+      END IF;
     END IF;
   ELSE
     parent_address_level := 3;
@@ -625,11 +639,6 @@ BEGIN
       END IF;
   END IF;
 
-  -- Speed up searches - just use the centroid of the feature
-  -- cheaper but less acurate
-  NEW.centroid := ST_PointOnSurface(NEW.geometry);
-  --DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(NEW.centroid);
-
   NEW.postcode := null;
 
   -- recalculate country and partition
@@ -828,6 +837,18 @@ BEGIN
     THEN
       NEW.importance = linked_importance;
     END IF;
+  ELSE
+    -- No linked place? As a last resort check if the boundary is tagged with
+    -- a place type and adapt the rank address.
+    IF NEW.rank_address > 0 and NEW.extratags ? 'place' THEN
+      SELECT address_rank INTO place_address_level
+        FROM compute_place_rank(NEW.country_code, 'A', 'place',
+                                NEW.extratags->'place', 0::SMALLINT, False, null);
+      IF place_address_level > parent_address_level and
+         place_address_level < 26 THEN
+        NEW.rank_address := place_address_level;
+      END IF;
+    END IF;
   END IF;
 
   -- Initialise the name vector using our name
@@ -844,7 +865,9 @@ BEGIN
   END IF;
 
   SELECT * FROM insert_addresslines(NEW.place_id, NEW.partition,
-                                    NEW.rank_search, NEW.address,
+                                    CASE WHEN NEW.rank_address = 0
+                                      THEN NEW.rank_search ELSE NEW.rank_address END,
+                                    NEW.address,
                                     CASE WHEN NEW.rank_search >= 26
                                              AND NEW.rank_search < 30
                                       THEN NEW.geometry ELSE NEW.centroid END)
@@ -906,10 +929,14 @@ DECLARE
 BEGIN
   -- RAISE WARNING 'placex_delete % %',OLD.osm_type,OLD.osm_id;
 
-  update placex set linked_place_id = null, indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;
-  --DEBUG: RAISE WARNING 'placex_delete:01 % %',OLD.osm_type,OLD.osm_id;
-  update placex set linked_place_id = null where linked_place_id = OLD.place_id;
-  --DEBUG: RAISE WARNING 'placex_delete:02 % %',OLD.osm_type,OLD.osm_id;
+  IF OLD.linked_place_id is null THEN
+    update placex set linked_place_id = null, indexed_status = 2 where linked_place_id = OLD.place_id and indexed_status = 0;
+    --DEBUG: RAISE WARNING 'placex_delete:01 % %',OLD.osm_type,OLD.osm_id;
+    update placex set linked_place_id = null where linked_place_id = OLD.place_id;
+    --DEBUG: RAISE WARNING 'placex_delete:02 % %',OLD.osm_type,OLD.osm_id;
+  ELSE
+    update placex set indexed_status = 2 where place_id = OLD.linked_place_id and indexed_status = 0;
+  END IF;
 
   IF OLD.rank_address < 30 THEN