openmaptiles/layers/aerodrome_label/update.sql

52 wiersze
1.6 KiB
PL/PgSQL

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