[orm] [bug] [regression] Fixed regression where ORM models that used joined table inheritance with a
composite foreign key would encounter an internal error in the mapper
internals.
[orm] [bug] Added support for PEP 484NewType to be used in the
_orm.registry.type_annotation_map as well as within
Mapped constructs. These types will behave in the same way as
custom subclasses of types right now; they must appear explicitly within
the _orm.registry.type_annotation_map to be mapped.
[orm] [bug] When using the MappedAsDataclass superclass, all classes within
the hierarchy that are subclasses of this class will now be run through the
@dataclasses.dataclass function whether or not they are actually
mapped, so that non-ORM fields declared on non-mapped classes within the
hierarchy will be used when mapped subclasses are turned into dataclasses.
This behavior applies both to intermediary classes mapped with
__abstract__ = True as well as to the user-defined declarative base
itself, assuming MappedAsDataclass is present as a superclass for
these classes.
This allows non-mapped attributes such as InitVar declarations on
superclasses to be used, without the need to run the
@dataclasses.dataclass decorator explicitly on each non-mapped class.
The new behavior is considered as correct as this is what the PEP 681
implementation expects when using a superclass to indicate dataclass
behavior.
[orm] [bug] Added support for PEP 586Literal[] to be used in the
_orm.registry.type_annotation_map as well as within
Mapped constructs. To use custom types such as these, they must
appear explicitly within the _orm.registry.type_annotation_map
to be mapped. Pull request courtesy Frederik Aalund.
As part of this change, the support for sqltypes.Enum in the
_orm.registry.type_annotation_map has been expanded to include
support for Literal[] types consisting of string values to be used,
in addition to enum.Enum datatypes. If a Literal[] datatype
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Bumps sqlalchemy from 1.4.39 to 2.0.1.
Release notes
Sourced from sqlalchemy's releases.
... (truncated)
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