Classe « MappedColumn »

Informations générales

Héritage

                builtins.object
                    TypingOnly
                builtins.object
                    Generic
                        _MappedAttribute
            builtins.object
                SQLRole
                    DDLConstraintColumnRole
            builtins.object
                TypingOnly
            builtins.object
                Generic
                    _MappedAnnotationBase
            builtins.object
                TypingOnly
            builtins.object
                Generic
                    ORMDescriptor
            builtins.object
                TypingOnly
        builtins.object
            TypingOnly
builtins.object
    SQLRole
builtins.object
    Generic
        TypedColumnsClauseRole
            ExpressionElementRole
    builtins.object
        TypingOnly
builtins.object
    Operators
        ColumnOperators
    builtins.object
        Generic
            SQLCoreOperations
                SQLColumnExpression
        builtins.object
            TypingOnly
    builtins.object
        TypingOnly
builtins.object
    Operators
        ColumnOperators
    builtins.object
        Generic
            SQLCoreOperations
                SQLORMOperations
                    SQLORMExpression
                        Mapped
                            _DeclarativeMapped
                builtins.object
                    TypingOnly
                builtins.object
                    Generic
                        _MappedAttribute
                    builtins.object
                        _DCAttributeOptions
                            _MapsColumns
                        builtins.object
                            _IntrospectsAnnotations
                                MappedColumn

Définition

class MappedColumn(_IntrospectsAnnotations, _MapsColumns, _DeclarativeMapped):

help(MappedColumn)

Maps a single :class:`_schema.Column` on a class.

:class:`_orm.MappedColumn` is a specialization of the
:class:`_orm.ColumnProperty` class and is oriented towards declarative
configuration.

To construct :class:`_orm.MappedColumn` objects, use the
:func:`_orm.mapped_column` constructor function.

.. versionadded:: 2.0

Constructeur(s)

Signature du constructeur	Description
__init__(self, arg: 'Any', *kw: 'Any')

Liste des attributs statiques

Nom de l'attribut	Valeur
active_history	<member 'active_history' of 'MappedColumn' objects>
allows_lambda	False
column	<member 'column' of 'MappedColumn' objects>
deferred	<member 'deferred' of 'MappedColumn' objects>
deferred_group	<member 'deferred_group' of 'MappedColumn' objects>
deferred_raiseload	<member 'deferred_raiseload' of 'MappedColumn' objects>
foreign_keys	<member 'foreign_keys' of 'MappedColumn' objects>
timetuple	None
uses_inspection	False

Liste des propriétés

Nom de la propriété	Description
columns_to_assign
mapper_property_to_assign
name

Liste des opérateurs

Opérateurs hérités de la classe ColumnOperators

__add__, __contains__, __eq__, __floordiv__, __ge__, __getitem__, __gt__, __le__, __lshift__, __lt__, __mod__, __mul__, __ne__, __neg__, __radd__, __rfloordiv__, __rmod__, __rmul__, __rshift__, __rsub__, __rtruediv__, __sub__, __truediv__

Liste des opérateurs

Opérateurs hérités de la classe Operators

__and__, __invert__, __or__

Liste des méthodes

Toutes les méthodes Méthodes d'instance Méthodes statiques

Signature de la méthode	Description
__class_getitem__	Parameterizes a generic class. _{[extrait de __class_getitem__.__doc__]}
__clause_element__(self) -> 'Column[_T]'
declarative_scan(self, decl_scan: '_ClassScanMapperConfig', registry: '_RegistryType', cls: 'Type[Any]', originating_module: 'Optional[str]', key: 'str', mapped_container: 'Optional[Type[Mapped[Any]]]', annotation: 'Optional[_AnnotationScanType]', extracted_mapped_annotation: 'Optional[_AnnotationScanType]', is_dataclass_field: 'bool') -> 'None'
declarative_scan_for_composite(self, registry: '_RegistryType', cls: 'Type[Any]', originating_module: 'Optional[str]', key: 'str', param_name: 'str', param_annotation: '_AnnotationScanType') -> 'None'
found_in_pep593_annotated(self) -> 'Any'
operate(self, op: 'OperatorType', other: 'Any', *kwargs: 'Any') -> 'ColumnElement[Any]'
reverse_operate(self, op: 'OperatorType', other: 'Any', **kwargs: 'Any') -> 'ColumnElement[Any]'

Méthodes héritées de la classe _DeclarativeMapped

__init_subclass__, __sa_operate__, __subclasshook__

Méthodes héritées de la classe ExpressionElementRole

label

Méthodes héritées de la classe ColumnOperators

all_, any_, asc, between, bitwise_and, bitwise_lshift, bitwise_not, bitwise_or, bitwise_rshift, bitwise_xor, collate, concat, contains, desc, distinct, endswith, icontains, iendswith, ilike, in_, is_, is_distinct_from, is_not, is_not_distinct_from, isnot, isnot_distinct_from, istartswith, like, match, not_ilike, not_in, not_like, notilike, notin_, notlike, nulls_first, nulls_last, nullsfirst, nullslast, regexp_match, regexp_replace, startswith