openmaptiles/layers/place/update_island_point.sql

88 wiersze
2.5 KiB
PL/PgSQL

DROP TRIGGER IF EXISTS trigger_flag ON osm_island_point;
DROP TRIGGER IF EXISTS trigger_store ON osm_island_point;
DROP TRIGGER IF EXISTS trigger_refresh ON place_island_point.updates;
CREATE SCHEMA IF NOT EXISTS place_island_point;
CREATE TABLE IF NOT EXISTS place_island_point.osm_ids
(
osm_id bigint PRIMARY KEY
);
-- etldoc: osm_island_point -> osm_island_point
CREATE OR REPLACE FUNCTION update_osm_island_point(full_update boolean) RETURNS void AS
$$
UPDATE osm_island_point
SET tags = update_tags(tags, geometry)
WHERE (full_update OR osm_id IN (SELECT osm_id FROM place_island_point.osm_ids))
AND COALESCE(tags->'name:latin', tags->'name:nonlatin', tags->'name_int') IS NULL
AND tags != update_tags(tags, geometry);
$$ LANGUAGE SQL;
SELECT update_osm_island_point(true);
-- Handle updates
CREATE OR REPLACE FUNCTION place_island_point.store() RETURNS trigger AS
$$
BEGIN
INSERT INTO place_island_point.osm_ids VALUES (NEW.osm_id) ON CONFLICT (osm_id) DO NOTHING;
RETURN NULL;
END;
$$ LANGUAGE plpgsql;
CREATE TABLE IF NOT EXISTS place_island_point.updates
(
id serial PRIMARY KEY,
t text,
UNIQUE (t)
);
CREATE OR REPLACE FUNCTION place_island_point.flag() RETURNS trigger AS
$$
BEGIN
INSERT INTO place_island_point.updates(t) VALUES ('y') ON CONFLICT(t) DO NOTHING;
RETURN NULL;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION place_island_point.refresh() RETURNS trigger AS
$$
DECLARE
t TIMESTAMP WITH TIME ZONE := clock_timestamp();
BEGIN
RAISE LOG 'Refresh place_island_point';
-- Analyze tracking and source tables before performing update
ANALYZE place_island_point.osm_ids;
ANALYZE osm_island_point;
PERFORM update_osm_island_point(false);
-- noinspection SqlWithoutWhere
DELETE FROM place_island_point.osm_ids;
-- noinspection SqlWithoutWhere
DELETE FROM place_island_point.updates;
RAISE LOG 'Refresh place_island_point done in %', age(clock_timestamp(), t);
RETURN NULL;
END;
$$ LANGUAGE plpgsql;
CREATE TRIGGER trigger_store
AFTER INSERT OR UPDATE
ON osm_island_point
FOR EACH ROW
EXECUTE PROCEDURE place_island_point.store();
CREATE TRIGGER trigger_flag
AFTER INSERT OR UPDATE
ON osm_island_point
FOR EACH STATEMENT
EXECUTE PROCEDURE place_island_point.flag();
CREATE CONSTRAINT TRIGGER trigger_refresh
AFTER INSERT
ON place_island_point.updates
INITIALLY DEFERRED
FOR EACH ROW
EXECUTE PROCEDURE place_island_point.refresh();