q = 'SELECT *'
if tablename == 'placex':
q = q + ", ST_X(centroid) as clat, ST_Y(centroid) as clon"
+ q = q + ", ST_GeometryType(geometry) as geometrytype"
q = q + ' FROM %s where osm_type = %%s and osm_id = %%s' % (tablename,)
if cls is None:
params = (osmtype, osmid)