diff options
| -rw-r--r-- | lib/sqlalchemy/orm/__init__.py | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/lib/sqlalchemy/orm/__init__.py b/lib/sqlalchemy/orm/__init__.py index 2f1a423f3..99443d00d 100644 --- a/lib/sqlalchemy/orm/__init__.py +++ b/lib/sqlalchemy/orm/__init__.py @@ -402,7 +402,7 @@ def relation(argument, secondary=None, **kwargs): """ return RelationProperty(argument, secondary=secondary, **kwargs) -def dynamic_loader(argument, secondary=None, primaryjoin=None, secondaryjoin=None, +def dynamic_loader(argument, secondary=None, primaryjoin=None, secondaryjoin=None, foreign_keys=None, backref=None, post_update=False, cascade=False, remote_side=None, enable_typechecks=True, passive_deletes=False, order_by=None, comparator_factory=None): """Construct a dynamically-loading mapper property. @@ -469,10 +469,10 @@ def column_property(*args, **kwargs): :func:`~sqlalchemy.orm.deferred`. extension - an :class:`~sqlalchemy.orm.interfaces.AttributeExtension` instance, - or list of extensions, which will be prepended to the list of + an :class:`~sqlalchemy.orm.interfaces.AttributeExtension` instance, + or list of extensions, which will be prepended to the list of attribute listeners for the resulting descriptor placed on the class. - These listeners will receive append and set events before the + These listeners will receive append and set events before the operation proceeds, and may be used to halt (via exception throw) or change the value used in the operation. @@ -542,10 +542,10 @@ def composite(class_, *cols, **kwargs): which provides custom SQL clause generation for comparison operations. extension - an :class:`~sqlalchemy.orm.interfaces.AttributeExtension` instance, - or list of extensions, which will be prepended to the list of + an :class:`~sqlalchemy.orm.interfaces.AttributeExtension` instance, + or list of extensions, which will be prepended to the list of attribute listeners for the resulting descriptor placed on the class. - These listeners will receive append and set events before the + These listeners will receive append and set events before the operation proceeds, and may be used to halt (via exception throw) or change the value used in the operation. @@ -668,10 +668,8 @@ def mapper(class_, local_table=None, *args, **params): corresponding to the *class identity* of this mapper. polymorphic_fetch - specifies how subclasses mapped through joined-table inheritance will - be fetched. options are 'union', 'select', and 'deferred'. if the - 'with_polymorphic' argument is present, defaults to 'union', otherwise - defaults to 'select'. + Deprecated. Unloaded columns load as deferred in all cases; loading + can be controlled using the "with_polymorphic" option. properties A dictionary mapping the string names of object attributes to |