42 lines
1.4 KiB
PL/PgSQL
42 lines
1.4 KiB
PL/PgSQL
-- Interface of the server extension
|
|
|
|
CREATE OR REPLACE FUNCTION geocode_admin0_polygons(user_id name, tx_id bigint, country_name text)
|
|
RETURNS Geometry AS $$
|
|
plpy.debug('Entering geocode_admin0_polygons')
|
|
plpy.debug('user_name = %s' % user_name)
|
|
|
|
#-- Access control
|
|
#-- TODO: this should be part of cdb python library
|
|
if user_name == 'publicuser':
|
|
plpy.error('The api_key must be provided')
|
|
|
|
#--TODO: rate limiting check
|
|
#--TODO: quota check
|
|
|
|
#-- Copied from the doc, see http://www.postgresql.org/docs/9.4/static/plpython-database.html
|
|
plan = plpy.prepare("SELECT _geocode_admin0_polygons($1) AS mypolygon", ["text"])
|
|
rv = plpy.execute(plan, [country_name], 1)
|
|
|
|
plpy.debug('Returning from Returning from geocode_admin0_polygons')
|
|
return rv[0]["mypolygon"]
|
|
$$ LANGUAGE plpythonu;
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
-- Implementation of the server extension
|
|
|
|
CREATE OR REPLACE FUNCTION _geocode_admin0_polygons(country_name text)
|
|
RETURNS Geometry AS $$
|
|
DECLARE
|
|
ret Geometry;
|
|
BEGIN
|
|
SELECT n.the_geom as geom INTO ret
|
|
FROM (SELECT q, lower(regexp_replace(q, '[^a-zA-Z\u00C0-\u00ff]+', '', 'g'))::text x
|
|
FROM (SELECT country_name q) g) d
|
|
LEFT OUTER JOIN admin0_synonyms s ON name_ = d.x
|
|
LEFT OUTER JOIN ne_admin0_v3 n ON s.adm0_a3 = n.adm0_a3 GROUP BY d.q, n.the_geom, s.adm0_a3;
|
|
RETURN ret;
|
|
END
|
|
$$ LANGUAGE plpgsql;
|