def __init__(self, *columns, **kwargs):
"""The list of `columns` describes a single object
property. If there are multiple tables joined together for the
mapper, this list represents the equivalent column as it
appears across each table.
"""
self.columns = [expression._labeled(c) for c in columns]
self.group = kwargs.pop("group", None)
self.deferred = kwargs.pop("deferred", False)
self.comparator_factory = kwargs.pop("comparator_factory", self.__class__.Comparator)
self.extension = kwargs.pop("extension", None)
util.set_creation_order(self)
if self.deferred:
self.strategy_class = strategies.DeferredColumnLoader
else:
self.strategy_class = strategies.ColumnLoader
def __init__(self, *columns, **kwargs):
"""The list of `columns` describes a single object
property. If there are multiple tables joined together for the
mapper, this list represents the equivalent column as it
appears across each table.
"""
self.columns = [expression._labeled(c) for c in columns]
self.group = kwargs.pop('group', None)
self.deferred = kwargs.pop('deferred', False)
self.comparator_factory = kwargs.pop('comparator_factory',
self.__class__.Comparator)
self.extension = kwargs.pop('extension', None)
util.set_creation_order(self)
if self.deferred:
self.strategy_class = strategies.DeferredColumnLoader
else:
self.strategy_class = strategies.ColumnLoader
def __init__(self, *columns, **kwargs):
"""Construct a ColumnProperty.
:param \*columns: The list of `columns` describes a single
object property. If there are multiple tables joined
together for the mapper, this list represents the equivalent
column as it appears across each table.
:param group:
:param deferred:
:param comparator_factory:
:param descriptor:
:param extension:
"""
self.columns = [expression._labeled(c) for c in columns]
self.group = kwargs.pop('group', None)
self.deferred = kwargs.pop('deferred', False)
self.no_instrument = kwargs.pop('_no_instrument', False)
self.comparator_factory = kwargs.pop('comparator_factory', self.__class__.Comparator)
self.descriptor = kwargs.pop('descriptor', None)
self.extension = kwargs.pop('extension', None)
if kwargs:
raise TypeError(
"%s received unexpected keyword argument(s): %s" % (
self.__class__.__name__, ', '.join(sorted(kwargs.keys()))))
util.set_creation_order(self)
if self.no_instrument:
self.strategy_class = strategies.UninstrumentedColumnLoader
elif self.deferred:
self.strategy_class = strategies.DeferredColumnLoader
else:
self.strategy_class = strategies.ColumnLoader