sqlalchemy.orm.strategies

module documentation

sqlalchemy.orm.interfaces.LoaderStrategy implementations, and related MapperOptions.
Class ​Abstract​Relationship​Loader LoaderStratgies which deal with related objects.
Class ​Column​Loader Provide loading behavior for a .ColumnProperty.
Class ​Deferred​Column​Loader Provide loading behavior for a deferred .ColumnProperty.
Class ​Do​Nothing​Loader Relationship loader that makes no change to the object's state.
Class ​Expression​Column​Loader Undocumented
Class ​Immediate​Loader Undocumented
Class ​Joined​Loader Provide loading behavior for a .RelationshipProperty using joined eager loading.
Class ​Lazy​Loader Provide loading behavior for a .RelationshipProperty with "lazy=True", that is loads when first accessed.
Class ​Load​Deferred​Columns serializable loader object used by DeferredColumnLoader
Class ​Load​Lazy​Attribute semi-serializable loader object used by LazyLoader
Class ​No​Loader Provide loading behavior for a .RelationshipProperty with "lazy=None".
Class ​Post​Loader A relationship loader that emits a second SELECT statement.
Class ​Select​In​Loader Undocumented
Class ​Subquery​Loader No class docstring; 0/1 instance variable, 0/1 class variable, 0/12 method, 1/1 class documented
Class ​Uninstrumented​Column​Loader Represent a non-instrumented MapperProperty.
Function ​_register​_attribute Undocumented
Function single​_parent​_validator Undocumented
def _register_attribute(prop, mapper, useobject, compare_function=None, typecallable=None, callable_=None, proxy_property=None, active_history=False, impl_class=None, **kw):

Undocumented

def single_parent_validator(desc, prop):

Undocumented