def _clone(self):
# yes, a little embarassing here.
# go look at 0.4 for the simple version.
q = Query.__new__(Query)
q.mapper = self.mapper
q.select_mapper = self.select_mapper
q._order_by = self._order_by
q._distinct = self._distinct
q._entities = list(self._entities)
q.always_refresh = self.always_refresh
q.with_options = list(self.with_options)
q._session = self.session
q.is_polymorphic = self.is_polymorphic
q.lockmode = self.lockmode
q.extension = mapper._ExtensionCarrier()
for ext in self.extension:
q.extension.append(ext)
q._offset = self._offset
q._limit = self._limit
q._params = self._params
q._group_by = self._group_by
q._get_clause = self._get_clause
q._from_obj = list(self._from_obj)
q._joinpoint = self._joinpoint
q._criterion = self._criterion
q._statement = self._statement
q._col = self._col
q._func = self._func
return q
def __init__(self, class_or_mapper, session=None, entity_name=None, lockmode=None, with_options=None, extension=None, **kwargs):
if isinstance(class_or_mapper, type):
self.mapper = mapper.class_mapper(class_or_mapper, entity_name=entity_name)
else:
self.mapper = class_or_mapper.compile()
self.with_options = with_options or []
self.select_mapper = self.mapper.get_select_mapper().compile()
self.always_refresh = kwargs.pop('always_refresh', self.mapper.always_refresh)
self.lockmode = lockmode
self.extension = mapper._ExtensionCarrier()
if extension is not None:
self.extension.append(extension)
self.extension.append(self.mapper.extension)
self.is_polymorphic = self.mapper is not self.select_mapper
self._session = session
if not hasattr(self.mapper, '_get_clause'):
_get_clause = sql.and_()
for primary_key in self.primary_key_columns:
_get_clause.clauses.append(primary_key == sql.bindparam(primary_key._label, type=primary_key.type, unique=True))
self.mapper._get_clause = _get_clause
self._entities = []
self._get_clause = self.mapper._get_clause
self._order_by = kwargs.pop('order_by', False)
self._group_by = kwargs.pop('group_by', False)
self._distinct = kwargs.pop('distinct', False)
self._offset = kwargs.pop('offset', None)
self._limit = kwargs.pop('limit', None)
self._criterion = None
self._joinpoint = self.mapper
self._from_obj = [self.table]
for opt in util.flatten_iterator(self.with_options):
opt.process_query(self)
def _clone(self):
q = Query.__new__(Query)
q.mapper = self.mapper
q.select_mapper = self.select_mapper
q._order_by = self._order_by
q._distinct = self._distinct
q._entities = list(self._entities)
q.always_refresh = self.always_refresh
q.with_options = list(self.with_options)
q._session = self.session
q.is_polymorphic = self.is_polymorphic
q.lockmode = self.lockmode
q.extension = mapper._ExtensionCarrier()
for ext in self.extension:
q.extension.append(ext)
q._offset = self._offset
q._limit = self._limit
q._group_by = self._group_by
q._get_clause = self._get_clause
q._from_obj = list(self._from_obj)
q._joinpoint = self._joinpoint
q._criterion = self._criterion
return q
