#31, #44, #45: GDPR workflow complete; started on locality data

resources/sql/locality-trigger.sql

@@ -0,0 +1,35 @@
+------------------------------------------------------------------------------;
+----
+---- locality-trigger.sql: compute localities for addresses
+----
+---- This program is free software; you can redistribute it and/or
+---- modify it under the terms of the GNU General Public License
+---- as published by the Free Software Foundation; either version 2
+---- of the License, or (at your option) any later version.
+----
+---- This program is distributed in the hope that it will be useful,
+---- but WITHOUT ANY WARRANTY; without even the implied warranty of
+---- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+---- GNU General Public License for more details.
+----
+---- You should have received a copy of the GNU General Public License
+---- along with this program; if not, write to the Free Software
+---- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+---- USA.
+----
+---- Copyright (C) 2016 Simon Brooke for Radical Independence Campaign
+----
+------------------------------------------------------------------------------;
+
+---- See also: src/cljc/locality.cljc
+
+CREATE FUNCTION compute_locality() RETURNS trigger AS $compute_locality$
+    BEGIN
+        NEW.locality = (10000 * floor (NEW.latitude * 1000)) -
+                        (NEW.longitude * 1000);
+        RETURN NEW;
+    END;
+$compute_locality$ LANGUAGE plpgsql;
+
+CREATE TRIGGER compute_locality BEFORE INSERT OR UPDATE ON addresses
+    FOR EACH ROW EXECUTE PROCEDURE compute_locality();