Adding a new function
This commit is contained in:
@@ -0,0 +1,36 @@
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-- Check that the public function is callable, even with no data
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-- It should return NULL
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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geocode_admin1_polygons
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-------------------------
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(1 row)
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California', 'United States');
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geocode_admin1_polygons
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-------------------------
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(1 row)
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-- Insert dummy data into country decoder table
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INSERT INTO country_decoder (synonyms, iso3) VALUES (Array['united states'], 'USA');
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-- Insert some dummy data and geometry to return
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INSERT INTO global_province_polygons (synonyms, iso3, the_geom) VALUES (Array['california'], 'USA', ST_GeomFromText(
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'POLYGON((-71.1031880899493 42.3152774590236,
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-71.1031627617667 42.3152960829043,
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-71.102923838298 42.3149156848307,
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-71.1031880899493 42.3152774590236))',4326)
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);
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-- This should return the polygon inserted above
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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geocode_admin1_polygons
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--------------------------------------------------------------------------------------------------------------------------------------------------------------------
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0103000020E61000000100000004000000D0EA37A29AC651C00FD603035B284540FEFCFB379AC651C0C0503E9F5B284540FFDDDD4D96C651C033AC3B284F284540D0EA37A29AC651C00FD603035B284540
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(1 row)
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California', 'United States');
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geocode_admin1_polygons
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--------------------------------------------------------------------------------------------------------------------------------------------------------------------
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0103000020E61000000100000004000000D0EA37A29AC651C00FD603035B284540FEFCFB379AC651C0C0503E9F5B284540FFDDDD4D96C651C033AC3B284F284540D0EA37A29AC651C00FD603035B284540
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(1 row)
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@@ -1,8 +1,9 @@
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-- Interface of the server extension
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-- Interfacess of the server extension
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---- geocode_admin1_polygons(admin1_name text)
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CREATE OR REPLACE FUNCTION geocode_admin1_polygons(user_id name, tx_id bigint, admin1_name text)
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CREATE OR REPLACE FUNCTION geocode_admin1_polygons(user_id name, tx_id bigint, admin1_name text)
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RETURNS Geometry AS $$
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RETURNS Geometry AS $$
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plpy.debug('Entering geocode_admin1_polygons')
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plpy.debug('Entering geocode_admin1_polygons(admin1_name text)')
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plpy.debug('user_id = %s' % user_id)
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plpy.debug('user_id = %s' % user_id)
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#-- Access control
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#-- Access control
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@@ -21,11 +22,34 @@ RETURNS Geometry AS $$
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return rv[0]["mypolygon"]
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return rv[0]["mypolygon"]
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$$ LANGUAGE plpythonu;
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$$ LANGUAGE plpythonu;
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---- geocode_admin1_polygons(admin1_name text, country_name text)
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CREATE OR REPLACE FUNCTION geocode_admin1_polygons(user_id name, tx_id bigint, admin1_name text, country_name text)
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RETURNS Geometry AS $$
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plpy.debug('Entering geocode_admin1_polygons(admin1_name text, country_name text)')
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plpy.debug('user_id = %s' % user_id)
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#-- Access control
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#-- TODO: this should be part of cdb python library
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if user_id == 'publicuser':
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plpy.error('The api_key must be provided')
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#--TODO: rate limiting check
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#--TODO: quota check
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#-- Copied from the doc, see http://www.postgresql.org/docs/9.4/static/plpython-database.html
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plan = plpy.prepare("SELECT cdb_geocoder_server._geocode_admin1_polygons($1, $2) AS mypolygon", ["text", "text"])
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rv = plpy.execute(plan, [admin1_name, country_name], 1)
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plpy.debug('Returning from Returning from geocode_admin1_polygons(admin1_name text, country_name text)')
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return rv[0]["mypolygon"]
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$$ LANGUAGE plpythonu;
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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-- Implementation of the server extension
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-- Implementation of the server extension
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-- Note: these functions depend on the cdb_geocoder extension
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-- Note: these functions depend on the cdb_geocoder extension
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---- geocode_admin1_polygons(admin1_name text)
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CREATE OR REPLACE FUNCTION _geocode_admin1_polygons(admin1_name text)
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CREATE OR REPLACE FUNCTION _geocode_admin1_polygons(admin1_name text)
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RETURNS Geometry AS $$
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RETURNS Geometry AS $$
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DECLARE
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DECLARE
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@@ -48,3 +72,28 @@ RETURNS Geometry AS $$
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RETURN ret;
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RETURN ret;
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END
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END
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$$ LANGUAGE plpgsql;
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$$ LANGUAGE plpgsql;
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---- geocode_admin1_polygons(admin1_name text, country_name text)
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CREATE OR REPLACE FUNCTION _geocode_admin1_polygons(admin1_name text, country_name text)
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RETURNS Geometry AS $$
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DECLARE
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ret Geometry;
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BEGIN
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WITH p AS (SELECT r.c, r.q, (SELECT iso3 FROM country_decoder WHERE lower(country_name) = ANY (synonyms)) i FROM (SELECT trim(replace(lower(admin1_name),'.',' ')) c, country_name q) r)
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SELECT
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geom INTO ret
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FROM (
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SELECT
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q, (
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SELECT the_geom
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FROM global_province_polygons
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WHERE p.c = ANY (synonyms)
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AND iso3 = p.i
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ORDER BY frequency DESC LIMIT 1
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) geom
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FROM p) n;
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RETURN ret;
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END
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$$ LANGUAGE plpgsql;
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@@ -1,9 +1,13 @@
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-- Check that the public function is callable, even with no data
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-- Check that the public function is callable, even with no data
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-- It should return NULL
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-- It should return NULL
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California', 'United States');
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-- Insert dummy data into country decoder table
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INSERT INTO country_decoder (synonyms, iso3) VALUES (Array['united states'], 'USA');
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-- Insert some dummy data and geometry to return
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-- Insert some dummy data and geometry to return
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INSERT INTO global_province_polygons (synonyms, the_geom) VALUES (Array['Califonia'], ST_GeomFromText(
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INSERT INTO global_province_polygons (synonyms, iso3, the_geom) VALUES (Array['california'], 'USA', ST_GeomFromText(
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'POLYGON((-71.1031880899493 42.3152774590236,
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'POLYGON((-71.1031880899493 42.3152774590236,
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-71.1031627617667 42.3152960829043,
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-71.1031627617667 42.3152960829043,
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-71.102923838298 42.3149156848307,
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-71.102923838298 42.3149156848307,
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@@ -12,3 +16,9 @@ INSERT INTO global_province_polygons (synonyms, the_geom) VALUES (Array['Califon
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-- This should return the polygon inserted above
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-- This should return the polygon inserted above
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California');
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SELECT cdb_geocoder_server.geocode_admin1_polygons(session_user, txid_current(), 'California', 'United States');
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