hans/Nominatim
1
0
Fork 1
mirror of https://github.com/osm-search/Nominatim.git synced 2026-02-14 18:37:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

add indexing of artificial postcodes

Browse Source
This commit is contained in:
Sarah Hoffmann
2017-06-29 21:39:00 +02:00
parent 15dbb6383c
commit 80ef6cbaab
4 changed files with 111 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

141
sql/functions.sql
View File

@@ -236,6 +236,65 @@ END;
$$
LANGUAGE plpgsql IMMUTABLE;
CREATE OR REPLACE FUNCTION get_postcode_rank(country_code VARCHAR(2), postcode TEXT,
OUT rank_search SMALLINT, OUT rank_address SMALLINT)
AS $$
DECLARE
part TEXT;
BEGIN
rank_search := 30;
rank_address := 30;
IF country_code = 'gb' THEN
IF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
rank_search := 25;
rank_address := 5;
ELSEIF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9])$' THEN
rank_search := 23;
rank_address := 5;
ELSEIF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z])$' THEN
rank_search := 21;
rank_address := 5;
END IF;
ELSEIF country_code = 'sg' THEN
IF postcode ~ '^([0-9]{6})$' THEN
rank_search := 25;
rank_address := 11;
END IF;
ELSEIF country_code = 'de' THEN
IF postcode ~ '^([0-9]{5})$' THEN
rank_search := 21;
rank_address := 11;
END IF;
ELSE
-- Guess at the postcode format and coverage (!)
IF postcode ~ '^[A-Z0-9]{1,5}$' THEN -- Probably too short to be very local
rank_search := 21;
rank_address := 11;
ELSE
-- Does it look splitable into and area and local code?
part := substring(postcode from '^([- :A-Z0-9]+)([- :][A-Z0-9]+)$');
IF part IS NOT NULL THEN
rank_search := 25;
rank_address := 11;
ELSEIF postcode ~ '^[- :A-Z0-9]{6,}$' THEN
rank_search := 21;
rank_address := 11;
END IF;
END IF;
END IF;
END;
$$
LANGUAGE plpgsql IMMUTABLE;
CREATE OR REPLACE FUNCTION create_country(src HSTORE, lookup_country_code varchar(2)) RETURNS VOID
AS $$
DECLARE
@@ -725,51 +784,8 @@ BEGIN
NEW.postcode := NEW.address->'postcode';
NEW.name := hstore('ref', NEW.postcode);
IF NEW.country_code = 'gb' THEN
IF NEW.postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
NEW.rank_search := 25;
NEW.rank_address := 5;
ELSEIF NEW.postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9])$' THEN
NEW.rank_search := 23;
NEW.rank_address := 5;
ELSEIF NEW.postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z])$' THEN
NEW.rank_search := 21;
NEW.rank_address := 5;
END IF;
ELSEIF NEW.country_code = 'sg' THEN
IF NEW.postcode ~ '^([0-9]{6})$' THEN
NEW.rank_search := 25;
NEW.rank_address := 11;
END IF;
ELSEIF NEW.country_code = 'de' THEN
IF NEW.postcode ~ '^([0-9]{5})$' THEN
NEW.rank_search := 21;
NEW.rank_address := 11;
END IF;
ELSE
-- Guess at the postcode format and coverage (!)
IF upper(NEW.postcode) ~ '^[A-Z0-9]{1,5}$' THEN -- Probably too short to be very local
NEW.rank_search := 21;
NEW.rank_address := 11;
ELSE
-- Does it look splitable into and area and local code?
postcode := substring(upper(NEW.postcode) from '^([- :A-Z0-9]+)([- :][A-Z0-9]+)$');
IF postcode IS NOT NULL THEN
NEW.rank_search := 25;
NEW.rank_address := 11;
ELSEIF NEW.postcode ~ '^[- :A-Z0-9]{6,}$' THEN
NEW.rank_search := 21;
NEW.rank_address := 11;
END IF;
END IF;
END IF;
SELECT * FROM get_postcode_rank(NEW.country_code, NEW.postcode)
INTO NEW.rank_search, NEW.rank_address;
ELSEIF NEW.class = 'place' THEN
IF NEW.type in ('continent') THEN
@@ -1094,7 +1110,42 @@ END;
$$
LANGUAGE plpgsql;
-- Trigger for updates of location_postcode
--
-- Computes the parent object the postcode most likely refers to.
-- This will be the place that determines the address displayed when
-- searching for this postcode.
CREATE OR REPLACE FUNCTION postcode_update() RETURNS
TRIGGER
AS $$
DECLARE
partition SMALLINT;
location RECORD;
BEGIN
IF NEW.indexed_status != 0 OR OLD.indexed_status = 0 THEN
RETURN NEW;
END IF;
NEW.indexed_date = now();
partition := get_partition(NEW.country_code);
SELECT * FROM get_postcode_rank(NEW.country_code, NEW.postcode)
INTO NEW.rank_search, NEW.rank_address;
NEW.parent_place_id = 0;
FOR location IN
SELECT place_id
FROM getNearFeatures(partition, NEW.geometry, NEW.rank_search, '{}'::int[])
WHERE NOT isguess ORDER BY rank_address DESC LIMIT 1
LOOP
NEW.parent_place_id = location.place_id;
END LOOP;
RETURN NEW;
END;
$$
LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION placex_update() RETURNS
TRIGGER