#NEWLINE# @ classmethod #NEWLINE# def setup_mappers( cls ) : #NEWLINE# #INDENT# ( A , B ) = cls . classes ( 'A' , 'B' ) #NEWLINE# ( a , b ) = cls . tables ( 'a' , 'b' ) #NEWLINE# mapper ( A , a ) #NEWLINE# mapper ( B , B , inherits = A , properties = { #NEWLINE# #INDENT# 'data' : deferred ( b . c . data ) , #NEWLINE# 'expr' : column_property ( ( b . c . data + 'q' ) , deferred = True ) , #NEWLINE# #UNINDENT# } )