Classe « registry »

Constructeur sqlalchemy.orm.registry.__init__

Signature de la constructeur __init__

def __init__(self, metadata=None, class_registry=None, constructor=<function _declarative_constructor at 0x7f40cb7f5090>, _bind=None) 

Description

__init__.__doc__

Construct a new :class:`_orm.registry`

        :param metadata:
          An optional :class:`_schema.MetaData` instance.  All
          :class:`_schema.Table` objects generated using declarative
          table mapping will make use of this :class:`_schema.MetaData`
          collection.  If this argument is left at its default of ``None``,
          a blank :class:`_schema.MetaData` collection is created.

        :param constructor:
          Specify the implementation for the ``__init__`` function on a mapped
          class that has no ``__init__`` of its own.  Defaults to an
          implementation that assigns \**kwargs for declared
          fields and relationships to an instance.  If ``None`` is supplied,
          no __init__ will be provided and construction will fall back to
          cls.__init__ by way of the normal Python semantics.

        :param class_registry: optional dictionary that will serve as the
          registry of class names-> mapped classes when string names
          are used to identify classes inside of :func:`_orm.relationship`
          and others.  Allows two or more declarative base classes
          to share the same registry of class names for simplified
          inter-base relationships.