pggeodb.nancy.inra.fr/db_toff - db_toff on pggeodb.nancy.inra.fr

Function: cleartopogeom

Schema

topology

Owner

postgres

Descriptions

args: topogeom - Clears the content of a topo geometry

Options

Definition

CREATE OR REPLACE FUNCTION topology.cleartopogeom (
 tg topology.topogeometry
)
RETURNS topology.topogeometry AS
$span$
DECLARE
 topology_info RECORD;
 sql TEXT;
BEGIN

 -- Get topology information
 SELECT id, name FROM topology.topology
   INTO topology_info
   WHERE id = topology_id(tg);
 IF NOT FOUND THEN
     RAISE EXCEPTION 'No topology with id "%" in topology.topology', topology_id(tg);
 END IF;

 -- Clear the TopoGeometry contents
 sql := 'DELETE FROM ' || quote_ident(topology_info.name)
       || '.relation WHERE layer_id = '
       || layer_id(tg)
       || ' AND topogeo_id = '
       || id(tg);
 EXECUTE sql;


 RETURN tg;

END
$span$
LANGUAGE 'plpgsql'
VOLATILE
RETURNS NULL ON NULL INPUT
SECURITY INVOKER
COST 100;

COMMENT ON FUNCTION topology.cleartopogeom(tg topology.topogeometry)
IS 'args: topogeom - Clears the content of a topo geometry';

This file was generated with SQL Manager for PostgreSQL (www.pgsqlmanager.com) at 13/03/2014 13:23