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Remove /api/0.6/changes endpoint

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Also removes sql functions which are only used by this endpoint
This commit is contained in:
mmd-osm 2019-12-28 20:42:08 +01:00 • committed by Andy Allan
parent cea93e7244
commit 4e6d729529
9 changed files with 2 additions and 255 deletions
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27
db/functions/functions.sql
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@ -42,33 +42,6 @@ END;
$$ LANGUAGE plpgsql IMMUTABLE;
-- maptile_for_point returns an integer representing the tile at the given zoom
-- which contains the point (scaled_lon, scaled_lat). Note that the arguments
-- are in the order (lat, lon), and should be scaled by 10^7.
--
-- The maptile_for_point function is used only for grouping the results of the
-- (deprecated?) /changes API call. Please don't use it for anything else, as
-- it might go away in the future.
CREATE OR REPLACE FUNCTION maptile_for_point(scaled_lat int8, scaled_lon int8, zoom int4)
RETURNS int4
AS $$
DECLARE
lat CONSTANT DOUBLE PRECISION := scaled_lat / 10000000.0;
lon CONSTANT DOUBLE PRECISION := scaled_lon / 10000000.0;
zscale CONSTANT DOUBLE PRECISION := 2.0 ^ zoom;
pi CONSTANT DOUBLE PRECISION := 3.141592653589793;
r_per_d CONSTANT DOUBLE PRECISION := pi / 180.0;
x int4;
y int4;
BEGIN
-- straight port of the C code. see db/functions/maptile.c
x := floor((lon + 180.0) * zscale / 360.0);
y := floor((1.0 - ln(tan(lat * r_per_d) + 1.0 / cos(lat * r_per_d)) / pi) * zscale / 2.0);
RETURN (x << zoom) | y;
END;
$$ LANGUAGE plpgsql IMMUTABLE;
-- xid_to_int4 converts a PostgreSQL transaction ID (xid) to a 32-bit integer
-- which can then be used to efficiently find rows which have changed between
-- two given transactions. This is currently used by Osmosis to extract a