]> git.openstreetmap.org Git - nominatim.git/blobdiff - sql/functions.sql
fix search for postcode via structured query
[nominatim.git] / sql / functions.sql
index b5ac15a3c30771913a1cc60ebc2afe55449e171b..a9bca5423dc03d327c3cccbd6d20cb3df4e61a65 100644 (file)
@@ -265,6 +265,7 @@ DECLARE
 BEGIN
     rank_search := 30;
     rank_address := 30;
+    postcode := upper(postcode);
 
     IF country_code = 'gb' THEN
         IF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
@@ -318,19 +319,31 @@ LANGUAGE plpgsql IMMUTABLE;
 CREATE OR REPLACE FUNCTION get_nearest_postcode(country VARCHAR(2), geom GEOMETRY) RETURNS TEXT
   AS $$
 DECLARE
-  item RECORD;
+  outcode TEXT;
+  cnt INTEGER;
 BEGIN
-    FOR item IN
-        SELECT postcode FROM location_postcode
-        WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
-              AND location_postcode.country_code = country
-        ORDER BY ST_Distance(geom, location_postcode.geometry)
-        LIMIT 1
-    LOOP
-        RETURN item.postcode;
-    END LOOP;
+    -- If the geometry is an area then only one postcode must be within
+    -- that area, otherwise consider the area as not having a postcode.
+    IF ST_GeometryType(geom) in ('ST_Polygon','ST_MultiPolygon') THEN
+        SELECT min(postcode), count(*) FROM
+              (SELECT postcode FROM location_postcode
+                WHERE ST_Contains(geom, location_postcode.geometry) LIMIT 2) sub
+          INTO outcode, cnt;
+
+        IF cnt = 1 THEN
+            RETURN outcode;
+        ELSE
+            RETURN null;
+        END IF;
+    END IF;
 
-    RETURN null;
+    SELECT postcode FROM location_postcode
+     WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
+          AND location_postcode.country_code = country
+     ORDER BY ST_Distance(geom, location_postcode.geometry) LIMIT 1
+    INTO outcode;
+
+    RETURN outcode;
 END;
 $$
 LANGUAGE plpgsql;
@@ -824,9 +837,9 @@ BEGIN
             RETURN NULL;
         END IF;
 
-        NEW.name := hstore('ref', NEW.postcode);
+        NEW.name := hstore('ref', NEW.address->'postcode');
 
-        SELECT * FROM get_postcode_rank(NEW.country_code, NEW.postcode)
+        SELECT * FROM get_postcode_rank(NEW.country_code, NEW.address->'postcode')
           INTO NEW.rank_search, NEW.rank_address;
 
     ELSEIF NEW.class = 'place' THEN
@@ -902,6 +915,9 @@ BEGIN
       ELSE
         NEW.rank_address := 0;
       END IF;
+    ELSEIF NEW.class = 'leisure' and NEW.type in ('park') THEN
+      NEW.rank_search := 24;
+      NEW.rank_address := 0;
     ELSEIF NEW.class = 'natural' and NEW.type in ('peak','volcano','mountain_range') THEN
       NEW.rank_search := 18;
       NEW.rank_address := 0;
@@ -1043,8 +1059,8 @@ DECLARE
   linegeo GEOMETRY;
   splitline GEOMETRY;
   sectiongeo GEOMETRY;
+  interpol_postcode TEXT;
   postcode TEXT;
-  seg_postcode TEXT;
 BEGIN
   -- deferred delete
   IF OLD.indexed_status = 100 THEN
@@ -1063,9 +1079,11 @@ BEGIN
                                                  NEW.address->'place',
                                                  NEW.partition, place_centroid, NEW.linegeo);
 
-
-  IF NEW.address is not NULL and NEW.address ? 'postcode' THEN
-      NEW.postcode = NEW.address->'postcode';
+  IF NEW.address is not NULL AND NEW.address ? 'postcode' AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
+    interpol_postcode := NEW.address->'postcode';
+    housenum := getorcreate_postcode_id(NEW.address->'postcode');
+  ELSE
+    interpol_postcode := NULL;
   END IF;
 
   -- if the line was newly inserted, split the line as necessary
@@ -1078,7 +1096,6 @@ BEGIN
 
       linegeo := NEW.linegeo;
       startnumber := NULL;
-      postcode := NEW.postcode;
 
       FOR nodeidpos in 1..array_upper(waynodes, 1) LOOP
 
@@ -1111,15 +1128,24 @@ BEGIN
               sectiongeo := ST_Reverse(sectiongeo);
             END IF;
 
-            seg_postcode := coalesce(postcode,
-                                     prevnode.address->'postcode',
-                                     nextnode.address->'postcode');
+            -- determine postcode
+            postcode := coalesce(interpol_postcode,
+                                 prevnode.address->'postcode',
+                                 nextnode.address->'postcode',
+                                 postcode);
+
+            IF postcode is NULL THEN
+                SELECT placex.postcode FROM placex WHERE place_id = NEW.parent_place_id INTO postcode;
+            END IF;
+            IF postcode is NULL THEN
+                postcode := get_nearest_postcode(NEW.country_code, nextnode.geometry);
+            END IF;
 
             IF NEW.startnumber IS NULL THEN
                 NEW.startnumber := startnumber;
                 NEW.endnumber := endnumber;
                 NEW.linegeo := sectiongeo;
-                NEW.postcode := seg_postcode;
+                NEW.postcode := upper(trim(postcode));
              ELSE
               insert into location_property_osmline
                      (linegeo, partition, osm_id, parent_place_id,
@@ -1128,7 +1154,7 @@ BEGIN
                       geometry_sector, indexed_status)
               values (sectiongeo, NEW.partition, NEW.osm_id, NEW.parent_place_id,
                       startnumber, endnumber, NEW.interpolationtype,
-                      NEW.address, seg_postcode,
+                      NEW.address, postcode,
                       NEW.country_code, NEW.geometry_sector, 0);
              END IF;
           END IF;
@@ -1534,34 +1560,15 @@ BEGIN
       --DEBUG: RAISE WARNING 'Got parent details from search name';
 
       -- determine postcode
-      IF NEW.address is not null AND NEW.address ? 'postcode' THEN
-          NEW.postcode = NEW.address->'postcode';
-      ELSE
-         SELECT postcode FROM placex WHERE place_id = NEW.parent_place_id INTO NEW.postcode;
-      END IF;
-      IF NEW.postcode is null THEN
-        NEW.postcode := get_nearest_postcode(NEW.country_code, place_centroid);
-      END IF;
-
-      -- Merge the postcode into the parent's address if necessary
-      IF NEW.postcode IS NOT NULL THEN
-        --DEBUG: RAISE WARNING 'Merging postcode into parent';
-        isin_tokens := '{}'::int[];
-        address_street_word_id := getorcreate_word_id(make_standard_name(NEW.postcode));
-        IF address_street_word_id is not null
-           and not ARRAY[address_street_word_id] <@ location.nameaddress_vector THEN
-           isin_tokens := isin_tokens || address_street_word_id;
-        END IF;
-        address_street_word_id := getorcreate_name_id(make_standard_name(NEW.postcode));
-        IF address_street_word_id is not null
-           and not ARRAY[address_street_word_id] <@ location.nameaddress_vector THEN
-           isin_tokens := isin_tokens || address_street_word_id;
-        END IF;
-        IF isin_tokens != '{}'::int[] THEN
-           UPDATE search_name
-              SET nameaddress_vector = search_name.nameaddress_vector || isin_tokens
-            WHERE place_id = NEW.parent_place_id;
-        END IF;
+      IF NEW.rank_search > 4 THEN
+          IF NEW.address is not null AND NEW.address ? 'postcode' THEN
+              NEW.postcode = upper(trim(NEW.address->'postcode'));
+          ELSE
+             SELECT postcode FROM placex WHERE place_id = NEW.parent_place_id INTO NEW.postcode;
+          END IF;
+          IF NEW.postcode is null THEN
+            NEW.postcode := get_nearest_postcode(NEW.country_code, place_centroid);
+          END IF;
       END IF;
 
       -- If there is no name it isn't searchable, don't bother to create a search record
@@ -1579,7 +1586,7 @@ BEGIN
       -- Just be happy with inheriting from parent road only
 
       IF NEW.rank_search <= 25 and NEW.rank_address > 0 THEN
-        result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.address->'postcode', NEW.geometry);
+        result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, upper(trim(NEW.address->'postcode')), NEW.geometry);
         --DEBUG: RAISE WARNING 'Place added to location table';
       END IF;
 
@@ -1940,7 +1947,7 @@ BEGIN
 
   IF NEW.address is not null AND NEW.address ? 'postcode' 
      AND NEW.address->'postcode' not similar to '%(,|;)%' THEN
-    NEW.postcode := NEW.address->'postcode';
+    NEW.postcode := upper(trim(NEW.address->'postcode'));
   END IF;
 
   IF NEW.postcode is null AND NEW.rank_search > 8 THEN
@@ -1951,7 +1958,7 @@ BEGIN
   IF NEW.name IS NOT NULL THEN
 
     IF NEW.rank_search <= 25 and NEW.rank_address > 0 THEN
-      result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, NEW.address->'postcode', NEW.geometry);
+      result := add_location(NEW.place_id, NEW.country_code, NEW.partition, name_vector, NEW.rank_search, NEW.rank_address, upper(trim(NEW.address->'postcode')), NEW.geometry);
       --DEBUG: RAISE WARNING 'added to location (full)';
     END IF;
 
@@ -2431,11 +2438,19 @@ BEGIN
   -- %NOAUXDATA% IF 0 THEN
   IF for_place_id IS NULL THEN
     select parent_place_id,'us', housenumber, 30, postcode, null, 'place', 'house' from location_property_aux
-      WHERE place_id = in_place_id 
+      WHERE place_id = in_place_id
       INTO for_place_id,searchcountrycode, searchhousenumber, searchrankaddress, searchpostcode, searchhousename, searchclass, searchtype;
   END IF;
   -- %NOAUXDATA% END IF;
 
+  -- postcode table
+  IF for_place_id IS NULL THEN
+    select parent_place_id, country_code, rank_address, postcode, 'place', 'postcode'
+      FROM location_postcode
+      WHERE place_id = in_place_id
+      INTO for_place_id, searchcountrycode, searchrankaddress, searchpostcode, searchclass, searchtype;
+  END IF;
+
   IF for_place_id IS NULL THEN
     select parent_place_id, country_code, housenumber, rank_search, postcode, name, class, type from placex 
       WHERE place_id = in_place_id and  rank_search > 27