openmaptiles/layers/waterway/update_waterway_linestring.sql

DROP TRIGGER IF EXISTS trigger_flag ON osm_waterway_linestring;
DROP TRIGGER IF EXISTS trigger_refresh ON osm_waterway_linestring;

DO $$
BEGIN
  update osm_waterway_linestring
      SET tags = update_tags(tags, geometry);

  update osm_waterway_linestring_gen1
      SET tags = update_tags(tags, geometry);

  update osm_waterway_linestring_gen2
      SET tags = update_tags(tags, geometry);

  update osm_waterway_linestring_gen3
      SET tags = update_tags(tags, geometry);
END $$;


-- Handle updates

CREATE SCHEMA IF NOT EXISTS waterway_linestring;
CREATE OR REPLACE FUNCTION waterway_linestring.refresh() RETURNS trigger AS
  $BODY$
  BEGIN
--     RAISE NOTICE 'Refresh waterway_linestring %', NEW.osm_id;
    NEW.tags = update_tags(NEW.tags, NEW.geometry);
    RETURN NEW;
  END;
  $BODY$
language plpgsql;

CREATE TRIGGER trigger_refresh
    BEFORE INSERT OR UPDATE ON osm_waterway_linestring
    FOR EACH ROW
    EXECUTE PROCEDURE waterway_linestring.refresh();