mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-27 00:49:55 +03:00
b9517c99ae
Also introduces a separate constant for the sql directory, so that it can be put separately from the rest of the data if required.
507 lines
15 KiB
PL/PgSQL
507 lines
15 KiB
PL/PgSQL
-- Assorted helper functions for the triggers.
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CREATE OR REPLACE FUNCTION geometry_sector(partition INTEGER, place geometry)
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RETURNS INTEGER
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AS $$
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DECLARE
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NEWgeometry geometry;
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BEGIN
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-- RAISE WARNING '%',place;
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NEWgeometry := ST_PointOnSurface(place);
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RETURN (partition*1000000) + (500-ST_X(NEWgeometry)::integer)*1000 + (500-ST_Y(NEWgeometry)::integer);
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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CREATE OR REPLACE FUNCTION array_merge(a INTEGER[], b INTEGER[])
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RETURNS INTEGER[]
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AS $$
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DECLARE
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i INTEGER;
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r INTEGER[];
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BEGIN
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IF array_upper(a, 1) IS NULL THEN
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RETURN b;
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END IF;
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IF array_upper(b, 1) IS NULL THEN
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RETURN a;
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END IF;
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r := a;
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FOR i IN 1..array_upper(b, 1) LOOP
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IF NOT (ARRAY[b[i]] <@ r) THEN
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r := r || b[i];
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END IF;
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END LOOP;
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RETURN r;
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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-- Return the node members with a given label from a relation member list
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-- as a set.
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--
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-- \param members Member list in osm2pgsql middle format.
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-- \param memberLabels Array of labels to accept.
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--
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-- \returns Set of OSM ids of nodes that are found.
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--
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CREATE OR REPLACE FUNCTION get_rel_node_members(members TEXT[],
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memberLabels TEXT[])
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RETURNS SETOF BIGINT
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AS $$
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DECLARE
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i INTEGER;
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BEGIN
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FOR i IN 1..ARRAY_UPPER(members,1) BY 2 LOOP
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IF members[i+1] = ANY(memberLabels)
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AND upper(substring(members[i], 1, 1))::char(1) = 'N'
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THEN
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RETURN NEXT substring(members[i], 2)::bigint;
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END IF;
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END LOOP;
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RETURN;
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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-- Copy 'name' to or from the default language.
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--
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-- \param country_code Country code of the object being named.
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-- \param[inout] name List of names of the object.
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--
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-- If the country named by country_code has a single default language,
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-- then a `name` tag is copied to `name:<country_code>` if this tag does
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-- not yet exist and vice versa.
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CREATE OR REPLACE FUNCTION add_default_place_name(country_code VARCHAR(2),
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INOUT name HSTORE)
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AS $$
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DECLARE
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default_language VARCHAR(10);
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BEGIN
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IF name is not null AND array_upper(akeys(name),1) > 1 THEN
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default_language := get_country_language_code(country_code);
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IF default_language IS NOT NULL THEN
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IF name ? 'name' AND NOT name ? ('name:'||default_language) THEN
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name := name || hstore(('name:'||default_language), (name -> 'name'));
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ELSEIF name ? ('name:'||default_language) AND NOT name ? 'name' THEN
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name := name || hstore('name', (name -> ('name:'||default_language)));
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END IF;
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END IF;
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END IF;
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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-- Find the nearest artificial postcode for the given geometry.
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-- TODO For areas there should not be more than two inside the geometry.
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CREATE OR REPLACE FUNCTION get_nearest_postcode(country VARCHAR(2), geom GEOMETRY)
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RETURNS TEXT
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AS $$
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DECLARE
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outcode TEXT;
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cnt INTEGER;
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BEGIN
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-- If the geometry is an area then only one postcode must be within
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-- that area, otherwise consider the area as not having a postcode.
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IF ST_GeometryType(geom) in ('ST_Polygon','ST_MultiPolygon') THEN
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SELECT min(postcode), count(*) FROM
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(SELECT postcode FROM location_postcode
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WHERE ST_Contains(geom, location_postcode.geometry) LIMIT 2) sub
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INTO outcode, cnt;
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IF cnt = 1 THEN
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RETURN outcode;
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ELSE
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RETURN null;
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END IF;
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END IF;
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SELECT postcode FROM location_postcode
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WHERE ST_DWithin(geom, location_postcode.geometry, 0.05)
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AND location_postcode.country_code = country
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ORDER BY ST_Distance(geom, location_postcode.geometry) LIMIT 1
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INTO outcode;
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RETURN outcode;
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END;
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$$
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LANGUAGE plpgsql STABLE;
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CREATE OR REPLACE FUNCTION get_country_code(place geometry)
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RETURNS TEXT
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AS $$
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DECLARE
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place_centre GEOMETRY;
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nearcountry RECORD;
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BEGIN
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place_centre := ST_PointOnSurface(place);
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-- RAISE WARNING 'get_country_code, start: %', ST_AsText(place_centre);
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-- Try for a OSM polygon
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FOR nearcountry IN
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SELECT country_code from location_area_country
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WHERE country_code is not null and st_covers(geometry, place_centre) limit 1
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LOOP
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RETURN nearcountry.country_code;
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END LOOP;
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-- RAISE WARNING 'osm fallback: %', ST_AsText(place_centre);
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-- Try for OSM fallback data
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-- The order is to deal with places like HongKong that are 'states' within another polygon
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FOR nearcountry IN
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SELECT country_code from country_osm_grid
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WHERE st_covers(geometry, place_centre) order by area asc limit 1
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LOOP
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RETURN nearcountry.country_code;
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END LOOP;
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-- RAISE WARNING 'near osm fallback: %', ST_AsText(place_centre);
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--
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FOR nearcountry IN
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SELECT country_code from country_osm_grid
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WHERE st_dwithin(geometry, place_centre, 0.5)
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ORDER BY st_distance(geometry, place_centre) asc, area asc limit 1
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LOOP
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RETURN nearcountry.country_code;
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END LOOP;
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RETURN NULL;
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END;
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$$
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LANGUAGE plpgsql STABLE;
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CREATE OR REPLACE FUNCTION get_country_language_code(search_country_code VARCHAR(2))
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RETURNS TEXT
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AS $$
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DECLARE
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nearcountry RECORD;
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BEGIN
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FOR nearcountry IN
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SELECT distinct country_default_language_code from country_name
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WHERE country_code = search_country_code limit 1
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LOOP
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RETURN lower(nearcountry.country_default_language_code);
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END LOOP;
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RETURN NULL;
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END;
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$$
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LANGUAGE plpgsql STABLE;
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CREATE OR REPLACE FUNCTION get_partition(in_country_code VARCHAR(10))
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RETURNS INTEGER
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AS $$
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DECLARE
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nearcountry RECORD;
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BEGIN
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FOR nearcountry IN
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SELECT partition from country_name where country_code = in_country_code
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LOOP
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RETURN nearcountry.partition;
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END LOOP;
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RETURN 0;
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END;
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$$
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LANGUAGE plpgsql STABLE;
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-- Find the parent of an address with addr:street/addr:place tag.
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--
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-- \param street Value of addr:street or NULL if tag is missing.
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-- \param place Value of addr:place or NULL if tag is missing.
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-- \param partition Partition where to search the parent.
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-- \param centroid Location of the address.
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--
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-- \return Place ID of the parent if one was found, NULL otherwise.
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CREATE OR REPLACE FUNCTION find_parent_for_address(street TEXT, place TEXT,
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partition SMALLINT,
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centroid GEOMETRY)
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RETURNS BIGINT
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AS $$
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DECLARE
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parent_place_id BIGINT;
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word_ids INTEGER[];
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BEGIN
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IF street is not null THEN
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-- Check for addr:street attributes
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-- Note that addr:street links can only be indexed, once the street itself is indexed
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word_ids := word_ids_from_name(street);
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IF word_ids is not null THEN
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parent_place_id := getNearestNamedRoadPlaceId(partition, centroid, word_ids);
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IF parent_place_id is not null THEN
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--DEBUG: RAISE WARNING 'Get parent form addr:street: %', parent_place_id;
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RETURN parent_place_id;
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END IF;
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END IF;
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END IF;
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-- Check for addr:place attributes.
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IF place is not null THEN
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word_ids := word_ids_from_name(place);
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IF word_ids is not null THEN
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parent_place_id := getNearestNamedPlacePlaceId(partition, centroid, word_ids);
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IF parent_place_id is not null THEN
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--DEBUG: RAISE WARNING 'Get parent form addr:place: %', parent_place_id;
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RETURN parent_place_id;
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END IF;
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END IF;
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END IF;
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RETURN NULL;
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END;
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$$
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LANGUAGE plpgsql STABLE;
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CREATE OR REPLACE FUNCTION delete_location(OLD_place_id BIGINT)
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RETURNS BOOLEAN
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AS $$
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DECLARE
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BEGIN
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DELETE FROM location_area where place_id = OLD_place_id;
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-- TODO:location_area
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RETURN true;
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END;
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$$
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LANGUAGE plpgsql;
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-- Create a bounding box with an extent computed from the radius (in meters)
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-- which in turn is derived from the given search rank.
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CREATE OR REPLACE FUNCTION place_node_fuzzy_area(geom GEOMETRY, rank_search INTEGER)
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RETURNS GEOMETRY
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AS $$
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DECLARE
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radius FLOAT := 500;
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BEGIN
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IF rank_search <= 16 THEN -- city
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radius := 15000;
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ELSIF rank_search <= 18 THEN -- town
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radius := 4000;
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ELSIF rank_search <= 19 THEN -- village
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radius := 2000;
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ELSIF rank_search <= 20 THEN -- hamlet
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radius := 1000;
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END IF;
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RETURN ST_Envelope(ST_Collect(
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ST_Project(geom, radius, 0.785398)::geometry,
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ST_Project(geom, radius, 3.9269908)::geometry));
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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CREATE OR REPLACE FUNCTION add_location(place_id BIGINT, country_code varchar(2),
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partition INTEGER, keywords INTEGER[],
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rank_search INTEGER, rank_address INTEGER,
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in_postcode TEXT, geometry GEOMETRY,
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centroid GEOMETRY)
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RETURNS BOOLEAN
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AS $$
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DECLARE
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locationid INTEGER;
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secgeo GEOMETRY;
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postcode TEXT;
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BEGIN
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PERFORM deleteLocationArea(partition, place_id, rank_search);
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-- add postcode only if it contains a single entry, i.e. ignore postcode lists
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postcode := NULL;
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IF in_postcode is not null AND in_postcode not similar to '%(,|;)%' THEN
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postcode := upper(trim (in_postcode));
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END IF;
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IF ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') THEN
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FOR secgeo IN select split_geometry(geometry) AS geom LOOP
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PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, false, postcode, centroid, secgeo);
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END LOOP;
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ELSEIF ST_GeometryType(geometry) = 'ST_Point' THEN
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secgeo := place_node_fuzzy_area(geometry, rank_search);
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PERFORM insertLocationAreaLarge(partition, place_id, country_code, keywords, rank_search, rank_address, true, postcode, centroid, secgeo);
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END IF;
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RETURN true;
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END;
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$$
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LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION quad_split_geometry(geometry GEOMETRY, maxarea FLOAT,
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maxdepth INTEGER)
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RETURNS SETOF GEOMETRY
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AS $$
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DECLARE
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xmin FLOAT;
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ymin FLOAT;
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xmax FLOAT;
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ymax FLOAT;
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xmid FLOAT;
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ymid FLOAT;
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secgeo GEOMETRY;
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secbox GEOMETRY;
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seg INTEGER;
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geo RECORD;
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area FLOAT;
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remainingdepth INTEGER;
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added INTEGER;
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BEGIN
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-- RAISE WARNING 'quad_split_geometry: maxarea=%, depth=%',maxarea,maxdepth;
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IF (ST_GeometryType(geometry) not in ('ST_Polygon','ST_MultiPolygon') OR NOT ST_IsValid(geometry)) THEN
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RETURN NEXT geometry;
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RETURN;
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END IF;
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remainingdepth := maxdepth - 1;
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area := ST_AREA(geometry);
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IF remainingdepth < 1 OR area < maxarea THEN
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RETURN NEXT geometry;
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RETURN;
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END IF;
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xmin := st_xmin(geometry);
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xmax := st_xmax(geometry);
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ymin := st_ymin(geometry);
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ymax := st_ymax(geometry);
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secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(ymin,xmin),ST_Point(ymax,xmax)),4326);
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-- if the geometry completely covers the box don't bother to slice any more
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IF ST_AREA(secbox) = area THEN
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RETURN NEXT geometry;
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RETURN;
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END IF;
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xmid := (xmin+xmax)/2;
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ymid := (ymin+ymax)/2;
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added := 0;
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FOR seg IN 1..4 LOOP
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IF seg = 1 THEN
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secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymin),ST_Point(xmid,ymid)),4326);
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END IF;
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IF seg = 2 THEN
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secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmin,ymid),ST_Point(xmid,ymax)),4326);
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END IF;
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IF seg = 3 THEN
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secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymin),ST_Point(xmax,ymid)),4326);
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END IF;
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IF seg = 4 THEN
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secbox := ST_SetSRID(ST_MakeBox2D(ST_Point(xmid,ymid),ST_Point(xmax,ymax)),4326);
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END IF;
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IF st_intersects(geometry, secbox) THEN
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secgeo := st_intersection(geometry, secbox);
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IF NOT ST_IsEmpty(secgeo) AND ST_GeometryType(secgeo) in ('ST_Polygon','ST_MultiPolygon') THEN
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FOR geo IN select quad_split_geometry(secgeo, maxarea, remainingdepth) as geom LOOP
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IF NOT ST_IsEmpty(geo.geom) AND ST_GeometryType(geo.geom) in ('ST_Polygon','ST_MultiPolygon') THEN
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added := added + 1;
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RETURN NEXT geo.geom;
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END IF;
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END LOOP;
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END IF;
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END IF;
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END LOOP;
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RETURN;
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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CREATE OR REPLACE FUNCTION split_geometry(geometry GEOMETRY)
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RETURNS SETOF GEOMETRY
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AS $$
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DECLARE
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geo RECORD;
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BEGIN
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-- 10000000000 is ~~ 1x1 degree
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FOR geo IN select quad_split_geometry(geometry, 0.25, 20) as geom LOOP
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RETURN NEXT geo.geom;
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END LOOP;
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RETURN;
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END;
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$$
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LANGUAGE plpgsql IMMUTABLE;
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CREATE OR REPLACE FUNCTION place_force_delete(placeid BIGINT)
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RETURNS BOOLEAN
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AS $$
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DECLARE
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osmid BIGINT;
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osmtype character(1);
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pclass text;
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ptype text;
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BEGIN
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SELECT osm_type, osm_id, class, type FROM placex WHERE place_id = placeid INTO osmtype, osmid, pclass, ptype;
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DELETE FROM import_polygon_delete where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
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DELETE FROM import_polygon_error where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
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-- force delete from place/placex by making it a very small geometry
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UPDATE place set geometry = ST_SetSRID(ST_Point(0,0), 4326) where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
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DELETE FROM place where osm_type = osmtype and osm_id = osmid and class = pclass and type = ptype;
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RETURN TRUE;
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END;
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$$
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LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION place_force_update(placeid BIGINT)
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RETURNS BOOLEAN
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AS $$
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DECLARE
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placegeom GEOMETRY;
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geom GEOMETRY;
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diameter FLOAT;
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rank SMALLINT;
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BEGIN
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UPDATE placex SET indexed_status = 2 WHERE place_id = placeid;
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SELECT geometry, rank_address INTO placegeom, rank
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FROM placex WHERE place_id = placeid;
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IF placegeom IS NOT NULL AND ST_IsValid(placegeom) THEN
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IF ST_GeometryType(placegeom) in ('ST_Polygon','ST_MultiPolygon')
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AND rank > 0
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THEN
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FOR geom IN SELECT split_geometry(placegeom) LOOP
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UPDATE placex SET indexed_status = 2
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WHERE ST_Intersects(geom, placex.geometry)
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and indexed_status = 0
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and ((rank_address = 0 and rank_search > rank) or rank_address > rank)
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and (rank_search < 28 or name is not null or (rank >= 16 and address ? 'place'));
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END LOOP;
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ELSE
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diameter := update_place_diameter(rank);
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IF diameter > 0 THEN
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IF rank >= 26 THEN
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-- roads may cause reparenting for >27 rank places
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update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter);
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ELSEIF rank >= 16 THEN
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-- up to rank 16, street-less addresses may need reparenting
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update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter) and (rank_search < 28 or name is not null or address ? 'place');
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ELSE
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-- for all other places the search terms may change as well
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update placex set indexed_status = 2 where indexed_status = 0 and rank_search > rank and ST_DWithin(placex.geometry, placegeom, diameter) and (rank_search < 28 or name is not null);
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END IF;
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END IF;
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END IF;
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RETURN TRUE;
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END IF;
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RETURN FALSE;
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END;
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$$
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LANGUAGE plpgsql;
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