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use closest containing place for unlisted addr:place

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We can't use getNearFeatures() to determine the parent of a
place with an unlisted addr:place because this function
returns place nodes that are potentially outside the area
of interest. Doing the complete address computation is too
expensive, so simply use the area with the largest rank that
contains the feature instead.
This commit is contained in:
Sarah Hoffmann 2020-09-23 17:33:42 +02:00
parent cf23e10382
commit e552f6bce5
1 changed files with 7 additions and 5 deletions
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12
sql/functions/placex_triggers.sql
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@ -93,13 +93,15 @@ BEGIN
IF fallback THEN
IF addr_street is null and addr_place is not null THEN
-- The address is attached to a place we don't know. Find the
-- nearest place instead.
-- The address is attached to a place we don't know.
-- Instead simply use the containing area with the largest rank.
FOR location IN
SELECT place_id FROM getNearFeatures(poi_partition, bbox, 26, '{}'::INTEGER[])
ORDER BY rank_address DESC, isguess asc, distance LIMIT 1
SELECT place_id FROM placex
WHERE bbox @ geometry AND _ST_Covers(geometry, ST_Centroid(bbox))
AND rank_address between 5 and 25
ORDER BY rank_address desc
LOOP
parent_place_id := location.place_id;
RETURN location.place_id;
END LOOP;
ELSEIF ST_Area(bbox) < 0.005 THEN
-- for smaller features get the nearest road