look for postcode areas when finding something in the postcode table

[nominatim.git] / lib-sql / tokenizer / legacy_tokenizer.sql

diff --git a/lib-sql/tokenizer/legacy_tokenizer.sql b/lib-sql/tokenizer/legacy_tokenizer.sql
index 2b734e6f2a95a5cfe97243e81e3b4c47485a3d92..c21d0510429910a94403203bfd2acf77df52fce1 100644 (file)
--- a/lib-sql/tokenizer/legacy_tokenizer.sql
+++ b/lib-sql/tokenizer/legacy_tokenizer.sql
@@ -1,3 +1,10 @@
+-- SPDX-License-Identifier: GPL-2.0-only
+--
+-- This file is part of Nominatim. (https://nominatim.org)
+--
+-- Copyright (C) 2022 by the Nominatim developer community.
+-- For a full list of authors see the git log.
+
 -- Get tokens used for searching the given place.
 --
 -- These are the tokens that will be saved in the search_name table.
@@ -34,10 +41,17 @@ AS $$
 $$ LANGUAGE SQL IMMUTABLE STRICT;
 
 
+CREATE OR REPLACE FUNCTION token_is_street_address(info JSONB)
+  RETURNS BOOLEAN
+AS $$
+  SELECT info->>'street' is not null or info->>'place_search' is null;
+$$ LANGUAGE SQL IMMUTABLE;
+
+
 CREATE OR REPLACE FUNCTION token_has_addr_street(info JSONB)
   RETURNS BOOLEAN
 AS $$
-  SELECT info->>'street' is not null;
+  SELECT info->>'street' is not null and info->>'street' != '{}';
 $$ LANGUAGE SQL IMMUTABLE;
 
 
@@ -90,10 +104,10 @@ AS $$
 $$ LANGUAGE SQL IMMUTABLE STRICT;
 
 
-CREATE OR REPLACE FUNCTION token_normalized_postcode(postcode TEXT)
+CREATE OR REPLACE FUNCTION token_get_postcode(info JSONB)
   RETURNS TEXT
 AS $$
-  SELECT CASE WHEN postcode SIMILAR TO '%(,|;)%' THEN NULL ELSE upper(trim(postcode))END;
+  SELECT info->>'postcode';
 $$ LANGUAGE SQL IMMUTABLE STRICT;
 
 
@@ -333,7 +347,7 @@ BEGIN
       END LOOP;
     END IF;
 
-    -- consider parts before an opening braket a full word as well
+    -- consider parts before an opening bracket a full word as well
     words := regexp_split_to_array(value, E'[(]');
     IF array_upper(words, 1) > 1 THEN
       s := make_standard_name(words[1]);