add FAQ from nominatim.org

[nominatim.git] / sql / functions.sql

diff --git a/sql/functions.sql b/sql/functions.sql
index ada9fb50007c0d4577efa04442681488b1eb54e9..024d1caa9857574358e4601b416c040eef8f9af7 100644 (file)
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -256,6 +256,28 @@ END;
 $$
 LANGUAGE plpgsql IMMUTABLE;
 
 $$
 LANGUAGE plpgsql IMMUTABLE;
 

+CREATE OR REPLACE FUNCTION reverse_place_diameter(rank_search SMALLINT)
+  RETURNS FLOAT
+  AS $$
+BEGIN
+  IF rank_search <= 4 THEN
+    RETURN 5.0;
+  ELSIF rank_search <= 8 THEN
+    RETURN 1.8;
+  ELSIF rank_search <= 12 THEN
+    RETURN 0.6;
+  ELSIF rank_search <= 17 THEN
+    RETURN 0.16;
+  ELSIF rank_search <= 18 THEN
+    RETURN 0.08;
+  ELSIF rank_search <= 19 THEN
+    RETURN 0.04;
+  END IF;
+
+  RETURN 0.02;
+END;
+$$
+LANGUAGE plpgsql IMMUTABLE;

 
 CREATE OR REPLACE FUNCTION get_postcode_rank(country_code VARCHAR(2), postcode TEXT,
                                       OUT rank_search SMALLINT, OUT rank_address SMALLINT)
 
 CREATE OR REPLACE FUNCTION get_postcode_rank(country_code VARCHAR(2), postcode TEXT,
                                       OUT rank_search SMALLINT, OUT rank_address SMALLINT)


@@ -842,6 +864,10 @@ BEGIN
         SELECT * FROM get_postcode_rank(NEW.country_code, NEW.address->'postcode')
           INTO NEW.rank_search, NEW.rank_address;
 
         SELECT * FROM get_postcode_rank(NEW.country_code, NEW.address->'postcode')
           INTO NEW.rank_search, NEW.rank_address;
 

+        IF NOT ST_GeometryType(NEW.geometry) IN ('ST_Polygon','ST_MultiPolygon') THEN
+            NEW.rank_address := 0;
+        END IF;
+

     ELSEIF NEW.class = 'place' THEN
       IF NEW.type in ('continent') THEN
         NEW.rank_search := 2;
     ELSEIF NEW.class = 'place' THEN
       IF NEW.type in ('continent') THEN
         NEW.rank_search := 2;


@@ -1875,33 +1901,6 @@ BEGIN
   END LOOP;
   --DEBUG: RAISE WARNING 'address computed';
 
   END LOOP;
   --DEBUG: RAISE WARNING 'address computed';
 

-  -- for long ways we should add search terms for the entire length
-  IF st_length(NEW.geometry) > 0.05 THEN
-
-    location_rank_search := 0;
-    location_distance := 0;
-
-    FOR location IN SELECT * from getNearFeatures(NEW.partition, NEW.geometry, search_maxrank, isin_tokens) LOOP
-
-      IF location.rank_address != location_rank_search THEN
-        location_rank_search := location.rank_address;
-        location_distance := location.distance * 1.5;
-      END IF;
-
-      IF location.rank_search > 4 AND location.distance < location_distance THEN
-
-        -- Add it to the list of search terms
-        nameaddress_vector := array_merge(nameaddress_vector, location.keywords::integer[]);
-        INSERT INTO place_addressline (place_id, address_place_id, fromarea, isaddress, distance, cached_rank_address)
-          VALUES (NEW.place_id, location.place_id, true, false, location.distance, location.rank_address); 
-
-      END IF;
-
-    END LOOP;
-
-  END IF;
-  --DEBUG: RAISE WARNING 'search terms for long ways added';
-

   IF NEW.address is not null AND NEW.address ? 'postcode' 
      AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
     NEW.postcode := upper(trim(NEW.address->'postcode'));
   IF NEW.address is not null AND NEW.address ? 'postcode' 
      AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
     NEW.postcode := upper(trim(NEW.address->'postcode'));