openmaptiles/layers/place/update_continent_point.sql

49 wiersze
1.5 KiB
PL/PgSQL

DROP TRIGGER IF EXISTS trigger_flag ON osm_continent_point;
DROP TRIGGER IF EXISTS trigger_refresh ON place_continent_point.updates;
-- etldoc: osm_continent_point -> osm_continent_point
CREATE OR REPLACE FUNCTION update_osm_continent_point() RETURNS VOID AS $$
BEGIN
UPDATE osm_continent_point
SET tags = update_tags(tags, geometry)
WHERE COALESCE(tags->'name:latin', tags->'name:nonlatin', tags->'name_int') IS NULL;
END;
$$ LANGUAGE plpgsql;
SELECT update_osm_continent_point();
-- Handle updates
CREATE SCHEMA IF NOT EXISTS place_continent_point;
CREATE TABLE IF NOT EXISTS place_continent_point.updates(id serial primary key, t text, unique (t));
CREATE OR REPLACE FUNCTION place_continent_point.flag() RETURNS trigger AS $$
BEGIN
INSERT INTO place_continent_point.updates(t) VALUES ('y') ON CONFLICT(t) DO NOTHING;
RETURN null;
END;
$$ language plpgsql;
CREATE OR REPLACE FUNCTION place_continent_point.refresh() RETURNS trigger AS
$BODY$
BEGIN
RAISE LOG 'Refresh place_continent_point';
PERFORM update_osm_continent_point();
DELETE FROM place_continent_point.updates;
RETURN null;
END;
$BODY$
language plpgsql;
CREATE TRIGGER trigger_flag
AFTER INSERT OR UPDATE OR DELETE ON osm_continent_point
FOR EACH STATEMENT
EXECUTE PROCEDURE place_continent_point.flag();
CREATE CONSTRAINT TRIGGER trigger_refresh
AFTER INSERT ON place_continent_point.updates
INITIALLY DEFERRED
FOR EACH ROW
EXECUTE PROCEDURE place_continent_point.refresh();