mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-30 12:22:10 +03:00
287 lines
8.4 KiB
PL/PgSQL
287 lines
8.4 KiB
PL/PgSQL
-- 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.
|
|
|
|
-- Functions related to search and address ranks
|
|
|
|
-- Return an approximate search radius according to the search rank.
|
|
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;
|
|
|
|
|
|
-- Return an approximate update radius according to the search rank.
|
|
CREATE OR REPLACE FUNCTION update_place_diameter(rank_search SMALLINT)
|
|
RETURNS FLOAT
|
|
AS $$
|
|
BEGIN
|
|
-- postcodes
|
|
IF rank_search = 11 or rank_search = 5 THEN
|
|
RETURN 0.05;
|
|
-- anything higher than city is effectively ignored (polygon required)
|
|
ELSIF rank_search < 16 THEN
|
|
RETURN 0;
|
|
ELSIF rank_search < 18 THEN
|
|
RETURN 0.1;
|
|
ELSIF rank_search < 20 THEN
|
|
RETURN 0.05;
|
|
ELSIF rank_search = 21 THEN
|
|
RETURN 0.001;
|
|
ELSIF rank_search < 24 THEN
|
|
RETURN 0.02;
|
|
ELSIF rank_search < 26 THEN
|
|
RETURN 0.002;
|
|
ELSIF rank_search < 28 THEN
|
|
RETURN 0.001;
|
|
END IF;
|
|
|
|
RETURN 0;
|
|
END;
|
|
$$
|
|
LANGUAGE plpgsql IMMUTABLE;
|
|
|
|
-- Compute a base address rank from the extent of the given geometry.
|
|
--
|
|
-- This is all simple guess work. We don't need particularly good estimates
|
|
-- here. This just avoids to have very high ranked address parts in features
|
|
-- that span very large areas (or vice versa).
|
|
CREATE OR REPLACE FUNCTION geometry_to_rank(search_rank SMALLINT, geometry GEOMETRY, country_code TEXT)
|
|
RETURNS SMALLINT
|
|
AS $$
|
|
DECLARE
|
|
area FLOAT;
|
|
BEGIN
|
|
IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
|
|
area := ST_Area(geometry);
|
|
ELSIF ST_GeometryType(geometry) in ('ST_LineString','ST_MultiLineString') THEN
|
|
area := (ST_Length(geometry)^2) * 0.1;
|
|
ELSE
|
|
RETURN search_rank;
|
|
END IF;
|
|
|
|
-- adjust for the fact that countries come in different sizes
|
|
IF country_code IN ('ca', 'au', 'ru') THEN
|
|
area := area / 5;
|
|
ELSIF country_code IN ('br', 'kz', 'cn', 'us', 'ne', 'gb', 'za', 'sa', 'id', 'eh', 'ml', 'tm') THEN
|
|
area := area / 3;
|
|
ELSIF country_code IN ('bo', 'ar', 'sd', 'mn', 'in', 'et', 'cd', 'mz', 'ly', 'cl', 'zm') THEN
|
|
area := area / 2;
|
|
END IF;
|
|
|
|
IF area > 1 THEN
|
|
RETURN 7;
|
|
ELSIF area > 0.1 THEN
|
|
RETURN 9;
|
|
ELSIF area > 0.01 THEN
|
|
RETURN 13;
|
|
ELSIF area > 0.001 THEN
|
|
RETURN 17;
|
|
ELSIF area > 0.0001 THEN
|
|
RETURN 19;
|
|
ELSIF area > 0.000005 THEN
|
|
RETURN 21;
|
|
END IF;
|
|
|
|
RETURN 23;
|
|
END;
|
|
$$
|
|
LANGUAGE plpgsql IMMUTABLE;
|
|
|
|
|
|
-- Guess a ranking for postcodes from country and postcode format.
|
|
CREATE OR REPLACE FUNCTION get_postcode_rank(country_code VARCHAR(2), postcode TEXT,
|
|
OUT rank_search SMALLINT,
|
|
OUT rank_address SMALLINT)
|
|
AS $$
|
|
DECLARE
|
|
part TEXT;
|
|
BEGIN
|
|
rank_search := 30;
|
|
rank_address := 30;
|
|
postcode := upper(postcode);
|
|
|
|
IF country_code = 'gb' THEN
|
|
IF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9][A-Z][A-Z])$' THEN
|
|
rank_search := 25;
|
|
rank_address := 5;
|
|
ELSEIF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z]? [0-9])$' THEN
|
|
rank_search := 23;
|
|
rank_address := 5;
|
|
ELSEIF postcode ~ '^([A-Z][A-Z]?[0-9][0-9A-Z])$' THEN
|
|
rank_search := 21;
|
|
rank_address := 5;
|
|
END IF;
|
|
|
|
ELSEIF country_code = 'sg' THEN
|
|
IF postcode ~ '^([0-9]{6})$' THEN
|
|
rank_search := 25;
|
|
rank_address := 11;
|
|
END IF;
|
|
|
|
ELSEIF country_code = 'de' THEN
|
|
IF postcode ~ '^([0-9]{5})$' THEN
|
|
rank_search := 21;
|
|
rank_address := 11;
|
|
END IF;
|
|
|
|
ELSE
|
|
-- Guess at the postcode format and coverage (!)
|
|
IF postcode ~ '^[A-Z0-9]{1,5}$' THEN -- Probably too short to be very local
|
|
rank_search := 21;
|
|
rank_address := 11;
|
|
ELSE
|
|
-- Does it look splitable into and area and local code?
|
|
part := substring(postcode from '^([- :A-Z0-9]+)([- :][A-Z0-9]+)$');
|
|
|
|
IF part IS NOT NULL THEN
|
|
rank_search := 25;
|
|
rank_address := 11;
|
|
ELSEIF postcode ~ '^[- :A-Z0-9]{6,}$' THEN
|
|
rank_search := 21;
|
|
rank_address := 11;
|
|
END IF;
|
|
END IF;
|
|
END IF;
|
|
|
|
END;
|
|
$$
|
|
LANGUAGE plpgsql IMMUTABLE;
|
|
|
|
|
|
-- Get standard search and address rank for an object.
|
|
--
|
|
-- \param country Two-letter country code where the object is in.
|
|
-- \param extended_type OSM type (N, W, R) or area type (A).
|
|
-- \param place_class Class (or tag key) of object.
|
|
-- \param place_type Type (or tag value) of object.
|
|
-- \param admin_level Value of admin_level tag.
|
|
-- \param is_major If true, boost search rank by one.
|
|
-- \param postcode Value of addr:postcode tag.
|
|
-- \param[out] search_rank Computed search rank.
|
|
-- \param[out] address_rank Computed address rank.
|
|
--
|
|
CREATE OR REPLACE FUNCTION compute_place_rank(country VARCHAR(2),
|
|
extended_type VARCHAR(1),
|
|
place_class TEXT, place_type TEXT,
|
|
admin_level SMALLINT,
|
|
is_major BOOLEAN,
|
|
postcode TEXT,
|
|
OUT search_rank SMALLINT,
|
|
OUT address_rank SMALLINT)
|
|
AS $$
|
|
DECLARE
|
|
classtype TEXT;
|
|
BEGIN
|
|
IF place_class in ('place','boundary')
|
|
and place_type in ('postcode','postal_code')
|
|
THEN
|
|
SELECT * INTO search_rank, address_rank
|
|
FROM get_postcode_rank(country, postcode);
|
|
ELSEIF extended_type = 'N' AND place_class = 'highway' THEN
|
|
search_rank = 30;
|
|
address_rank = 30;
|
|
ELSEIF place_class = 'landuse' AND extended_type != 'A' THEN
|
|
search_rank = 30;
|
|
address_rank = 30;
|
|
ELSE
|
|
IF place_class = 'boundary' and place_type = 'administrative' THEN
|
|
classtype = place_type || admin_level::TEXT;
|
|
ELSE
|
|
classtype = place_type;
|
|
END IF;
|
|
|
|
SELECT l.rank_search, l.rank_address INTO search_rank, address_rank
|
|
FROM address_levels l
|
|
WHERE (l.country_code = country or l.country_code is NULL)
|
|
AND l.class = place_class AND (l.type = classtype or l.type is NULL)
|
|
ORDER BY l.country_code, l.class, l.type LIMIT 1;
|
|
|
|
IF search_rank is NULL OR address_rank is NULL THEN
|
|
search_rank := 30;
|
|
address_rank := 30;
|
|
END IF;
|
|
|
|
-- some postcorrections
|
|
IF place_class = 'waterway' AND extended_type = 'R' THEN
|
|
-- Slightly promote waterway relations so that they are processed
|
|
-- before their members.
|
|
search_rank := search_rank - 1;
|
|
END IF;
|
|
|
|
IF is_major THEN
|
|
search_rank := search_rank - 1;
|
|
END IF;
|
|
END IF;
|
|
END;
|
|
$$
|
|
LANGUAGE plpgsql IMMUTABLE;
|
|
|
|
CREATE OR REPLACE FUNCTION get_addr_tag_rank(key TEXT, country TEXT,
|
|
OUT from_rank SMALLINT,
|
|
OUT to_rank SMALLINT,
|
|
OUT extent FLOAT)
|
|
AS $$
|
|
DECLARE
|
|
ranks RECORD;
|
|
BEGIN
|
|
from_rank := null;
|
|
|
|
FOR ranks IN
|
|
SELECT * FROM
|
|
(SELECT l.rank_search, l.rank_address FROM address_levels l
|
|
WHERE (l.country_code = country or l.country_code is NULL)
|
|
AND l.class = 'place' AND l.type = key
|
|
ORDER BY l.country_code LIMIT 1) r
|
|
WHERE rank_address > 0
|
|
LOOP
|
|
extent := reverse_place_diameter(ranks.rank_search);
|
|
|
|
IF ranks.rank_address <= 4 THEN
|
|
from_rank := 4;
|
|
to_rank := 4;
|
|
ELSEIF ranks.rank_address <= 9 THEN
|
|
from_rank := 5;
|
|
to_rank := 9;
|
|
ELSEIF ranks.rank_address <= 12 THEN
|
|
from_rank := 10;
|
|
to_rank := 12;
|
|
ELSEIF ranks.rank_address <= 16 THEN
|
|
from_rank := 13;
|
|
to_rank := 16;
|
|
ELSEIF ranks.rank_address <= 21 THEN
|
|
from_rank := 17;
|
|
to_rank := 21;
|
|
ELSEIF ranks.rank_address <= 24 THEN
|
|
from_rank := 22;
|
|
to_rank := 24;
|
|
ELSE
|
|
from_rank := 25;
|
|
to_rank := 25;
|
|
END IF;
|
|
END LOOP;
|
|
END;
|
|
$$
|
|
LANGUAGE plpgsql IMMUTABLE;
|