--- unique (geom, owner) constraint will not work: first because of postgis
--- #541; then because equality is checked by comparing bbox instead of real
--- geometries. So, we implement that constraint in a trigger
-CREATE OR REPLACE FUNCTION tg_paths_bu() RETURNS TRIGGER AS $$
-DECLARE res INTEGER;
-BEGIN
- SELECT INTO res COUNT(*) FROM paths WHERE ST_AsBinary(geom) = ST_AsBinary(NEW.geom) AND owner = NEW.owner AND id != NEW.id;
- IF res >= 1 THEN
- RAISE 'duplicate key paths_geom_key' using ERRCODE = 'unique_violation';
- ELSE
- RETURN NEW;
- END IF;
-END;
-$$ LANGUAGE PLPGSQL;
-
-DROP TRIGGER IF EXISTS tg_paths_bu ON paths;
-CREATE TRIGGER tg_paths_bu BEFORE INSERT OR UPDATE ON paths FOR EACH ROW EXECUTE PROCEDURE tg_paths_bu();
-