Adds first admin1 function #6

server/extension/sql/0.0.1/40_admin1.sql

@@ -0,0 +1,50 @@
+-- Interface of the server extension
+
+CREATE OR REPLACE FUNCTION geocode_admin1_polygons(user_id name, tx_id bigint, admin1_name text)
+RETURNS Geometry AS $$
+    plpy.debug('Entering geocode_admin1_polygons')
+    plpy.debug('user_id = %s' % user_id)
+
+    #-- Access control
+    #-- TODO: this should be part of cdb python library
+    if user_id == 'publicuser':
+        plpy.error('The api_key must be provided')
+
+    #--TODO: rate limiting check
+    #--TODO: quota check
+
+    #-- Copied from the doc, see http://www.postgresql.org/docs/9.4/static/plpython-database.html
+    plan = plpy.prepare("SELECT cdb_geocoder_server._geocode_admin1_polygons($1) AS mypolygon", ["text"])
+    rv = plpy.execute(plan, [admin1_name], 1)
+
+    plpy.debug('Returning from Returning from geocode_admin1_polygons')
+    return rv[0]["mypolygon"]
+$$ LANGUAGE plpythonu;
+
+
+--------------------------------------------------------------------------------
+
+-- Implementation of the server extension
+-- Note: these functions depend on the cdb_geocoder extension
+CREATE OR REPLACE FUNCTION _geocode_admin1_polygons(admin1_name text)
+RETURNS Geometry AS $$
+  DECLARE
+    ret Geometry;
+  BEGIN
+    SELECT geom INTO ret
+    FROM (
+      SELECT q, (
+          SELECT the_geom 
+          FROM global_province_polygons
+          WHERE d.c = ANY (synonyms) 
+          ORDER BY frequency DESC LIMIT 1
+        ) geom
+      FROM (
+        SELECT 
+          trim(replace(lower(admin1_name),'.',' ')) c, admin1_name q
+        ) d
+      ) v;
+
+    RETURN ret;
+  END
+$$ LANGUAGE plpgsql;