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.. _orm_internal_toplevel:
ORM Internals
=============
Key ORM constructs, not otherwise covered in other
sections, are listed here.
.. currentmodule: sqlalchemy.orm
.. autoclass:: sqlalchemy.orm.state.AttributeState
:members:
.. autoclass:: sqlalchemy.orm.util.CascadeOptions
:members:
.. autoclass:: sqlalchemy.orm.instrumentation.ClassManager
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.properties.ColumnProperty
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.properties.ComparableProperty
:members:
.. autoclass:: sqlalchemy.orm.descriptor_props.CompositeProperty
:members:
.. autoclass:: sqlalchemy.orm.attributes.Event
:members:
.. autoclass:: sqlalchemy.orm.identity.IdentityMap
:members:
.. autoclass:: sqlalchemy.orm.base.InspectionAttr
:members:
.. autoclass:: sqlalchemy.orm.base.InspectionAttrInfo
:members:
.. autoclass:: sqlalchemy.orm.state.InstanceState
:members:
.. autoclass:: sqlalchemy.orm.attributes.InstrumentedAttribute
:members: __get__, __set__, __delete__
:undoc-members:
.. autodata:: sqlalchemy.orm.interfaces.MANYTOONE
.. autodata:: sqlalchemy.orm.interfaces.MANYTOMANY
.. autoclass:: sqlalchemy.orm.interfaces.MapperProperty
:members:
.. py:attribute:: info
Info dictionary associated with the object, allowing user-defined
data to be associated with this :class:`.InspectionAttr`.
The dictionary is generated when first accessed. Alternatively,
it can be specified as a constructor argument to the
:func:`.column_property`, :func:`.relationship`, or :func:`.composite`
functions.
.. versionadded:: 0.8 Added support for .info to all
:class:`.MapperProperty` subclasses.
.. versionchanged:: 1.0.0 :attr:`.InspectionAttr.info` moved
from :class:`.MapperProperty` so that it can apply to a wider
variety of ORM and extension constructs.
.. seealso::
:attr:`.QueryableAttribute.info`
:attr:`.SchemaItem.info`
.. autodata:: sqlalchemy.orm.interfaces.NOT_EXTENSION
.. autodata:: sqlalchemy.orm.interfaces.ONETOMANY
.. autoclass:: sqlalchemy.orm.interfaces.PropComparator
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.properties.RelationshipProperty
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.descriptor_props.SynonymProperty
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.query.QueryContext
:members:
.. autoclass:: sqlalchemy.orm.attributes.QueryableAttribute
:members:
:inherited-members:
.. autoclass:: sqlalchemy.orm.session.UOWTransaction
:members:
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