diff options
Diffstat (limited to 'lib/sqlalchemy/orm/strategies.py')
| -rw-r--r-- | lib/sqlalchemy/orm/strategies.py | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/strategies.py b/lib/sqlalchemy/orm/strategies.py index d95f17f64..8a4c8e731 100644 --- a/lib/sqlalchemy/orm/strategies.py +++ b/lib/sqlalchemy/orm/strategies.py @@ -105,6 +105,8 @@ class UninstrumentedColumnLoader(LoaderStrategy): if the argument is against the with_polymorphic selectable. """ + __slots__ = 'columns', + def __init__(self, parent): super(UninstrumentedColumnLoader, self).__init__(parent) self.columns = self.parent_property.columns @@ -128,6 +130,8 @@ class UninstrumentedColumnLoader(LoaderStrategy): class ColumnLoader(LoaderStrategy): """Provide loading behavior for a :class:`.ColumnProperty`.""" + __slots__ = 'columns', 'is_composite' + def __init__(self, parent): super(ColumnLoader, self).__init__(parent) self.columns = self.parent_property.columns @@ -176,6 +180,8 @@ class ColumnLoader(LoaderStrategy): class DeferredColumnLoader(LoaderStrategy): """Provide loading behavior for a deferred :class:`.ColumnProperty`.""" + __slots__ = 'columns', 'group' + def __init__(self, parent): super(DeferredColumnLoader, self).__init__(parent) if hasattr(self.parent_property, 'composite_class'): @@ -225,7 +231,8 @@ class DeferredColumnLoader(LoaderStrategy): ( loadopt and 'undefer_pks' in loadopt.local_opts and - set(self.columns).intersection(self.parent.primary_key) + set(self.columns).intersection( + self.parent._should_undefer_in_wildcard) ) or ( @@ -300,6 +307,8 @@ class LoadDeferredColumns(object): class AbstractRelationshipLoader(LoaderStrategy): """LoaderStratgies which deal with related objects.""" + __slots__ = 'mapper', 'target', 'uselist' + def __init__(self, parent): super(AbstractRelationshipLoader, self).__init__(parent) self.mapper = self.parent_property.mapper @@ -316,6 +325,8 @@ class NoLoader(AbstractRelationshipLoader): """ + __slots__ = () + def init_class_attribute(self, mapper): self.is_class_level = True @@ -343,6 +354,10 @@ class LazyLoader(AbstractRelationshipLoader): """ + __slots__ = ( + '_lazywhere', '_rev_lazywhere', 'use_get', '_bind_to_col', + '_equated_columns', '_rev_bind_to_col', '_rev_equated_columns') + def __init__(self, parent): super(LazyLoader, self).__init__(parent) join_condition = self.parent_property._join_condition @@ -661,6 +676,8 @@ class LoadLazyAttribute(object): @properties.RelationshipProperty.strategy_for(lazy="immediate") class ImmediateLoader(AbstractRelationshipLoader): + __slots__ = () + def init_class_attribute(self, mapper): self.parent_property.\ _get_strategy_by_cls(LazyLoader).\ @@ -684,6 +701,8 @@ class ImmediateLoader(AbstractRelationshipLoader): @log.class_logger @properties.RelationshipProperty.strategy_for(lazy="subquery") class SubqueryLoader(AbstractRelationshipLoader): + __slots__ = 'join_depth', + def __init__(self, parent): super(SubqueryLoader, self).__init__(parent) self.join_depth = self.parent_property.join_depth @@ -1069,6 +1088,9 @@ class JoinedLoader(AbstractRelationshipLoader): using joined eager loading. """ + + __slots__ = 'join_depth', + def __init__(self, parent): super(JoinedLoader, self).__init__(parent) self.join_depth = self.parent_property.join_depth |