def __init__(self, entity_class, custom_join_clauses=None):
"""
Constructs a SqlOrderSpecificationVisitor
:param klass: a class that is mapped to a selectable using SQLAlchemy
"""
OrderSpecificationVisitor.__init__(self)
self.__entity_class = entity_class
if custom_join_clauses is None:
custom_join_clauses = {}
self.__custom_join_clauses = custom_join_clauses
self.__joins = set()
def __init__(self, entity_class, custom_join_clauses=None):
"""
Constructs a SqlOrderSpecificationVisitor
:param klass: a class that is mapped to a selectable using SQLAlchemy
"""
OrderSpecificationVisitor.__init__(self)
self.__entity_class = entity_class
if custom_join_clauses is None:
custom_join_clauses = {}
self.__custom_join_clauses = custom_join_clauses
self.__joins = set()
def visit_nullary(self, spec):
OrderSpecificationVisitor.visit_nullary(self, spec)
if spec.attr_name in self.__custom_join_clauses:
self.__joins = set(self.__custom_join_clauses[spec.attr_name])
def visit_nullary(self, spec):
OrderSpecificationVisitor.visit_nullary(self, spec)
if spec.attr_name in self.__custom_join_clauses:
self.__joins = set(self.__custom_join_clauses[spec.attr_name])
