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force countries into partitions as determined by country code

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Avoids to a certain extent propagation of misassignment of
partitions when a country is expanded so far into another
that the centroid ends up in this other country.
This commit is contained in:
Sarah Hoffmann
2014-04-10 22:55:49 +02:00
parent 346da9bc0d
commit 589bad809e
1 changed files with 21 additions and 8 deletions
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29
sql/functions.sql
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@@ -582,10 +582,9 @@ END;
$$
LANGUAGE plpgsql IMMUTABLE;
CREATE OR REPLACE FUNCTION get_partition(place geometry, in_country_code VARCHAR(10)) RETURNS INTEGER
CREATE OR REPLACE FUNCTION get_partition(in_country_code VARCHAR(10)) RETURNS INTEGER
AS $$
DECLARE
place_centre GEOMETRY;
nearcountry RECORD;
BEGIN
FOR nearcountry IN select partition from country_name where country_code = in_country_code
@@ -953,7 +952,7 @@ BEGIN
NEW.calculated_country_code := lower(get_country_code(NEW.geometry));
NEW.partition := get_partition(NEW.geometry, NEW.calculated_country_code);
NEW.partition := get_partition(NEW.calculated_country_code);
NEW.geometry_sector := geometry_sector(NEW.partition, NEW.geometry);
-- copy 'name' to or from the default language (if there is a default language)
@@ -1328,12 +1327,26 @@ BEGIN
NEW.centroid := null;
-- reclaculate country and partition
IF NEW.rank_search >= 4 THEN
NEW.calculated_country_code := lower(get_country_code(place_centroid));
IF NEW.rank_search = 4 THEN
-- for countries, believe the mapped country code,
-- so that we remain in the right partition if the boundaries
-- suddenly expand.
NEW.partition := get_partition(lower(NEW.country_code));
IF NEW.partition = 0 THEN
NEW.calculated_country_code := lower(get_country_code(place_centroid));
NEW.partition := get_partition(NEW.calculated_country_code);
ELSE
NEW.calculated_country_code := lower(NEW.country_code);
END IF;
ELSE
NEW.calculated_country_code := NULL;
IF NEW.rank_search > 4 THEN
--NEW.calculated_country_code := lower(get_country_code(NEW.geometry, NEW.country_code));
NEW.calculated_country_code := lower(get_country_code(place_centroid));
ELSE
NEW.calculated_country_code := NULL;
END IF;
NEW.partition := get_partition(NEW.calculated_country_code);
END IF;
NEW.partition := get_partition(place_centroid, NEW.calculated_country_code);
NEW.geometry_sector := geometry_sector(NEW.partition, place_centroid);
-- Adding ourselves to the list simplifies address calculations later
@@ -2788,7 +2801,7 @@ DECLARE
BEGIN
place_centroid := ST_Centroid(pointgeo);
out_partition := get_partition(place_centroid, in_countrycode);
out_partition := get_partition(in_countrycode);
out_parent_place_id := null;
address_street_word_id := get_name_id(make_standard_name(in_street));