Classe « Bundle »

Informations générales

Héritage

                builtins.object
                    InspectionAttr
            builtins.object
                Generic
                    Inspectable
            builtins.object
                HasMemoized
            builtins.object
                HasCacheKey
                    MemoizedHasCacheKey
builtins.object
    Visitable
builtins.object
    HasTraverseInternals
        ExternallyTraversible
            SupportsAnnotations
                SupportsWrappingAnnotations
                    SupportsCloneAnnotations
        builtins.object
            SQLRole
        builtins.object
            Generic
                TypedColumnsClauseRole
    builtins.object
        SQLRole
            ColumnListRole
        builtins.object
            UsesInspection
        builtins.object
            AllowsLambdaRole
                ColumnsClauseRole
                    ORMColumnsClauseRole
                        Bundle

Définition

class Bundle(ORMColumnsClauseRole, SupportsCloneAnnotations, MemoizedHasCacheKey, Inspectable, InspectionAttr):

help(Bundle)

A grouping of SQL expressions that are returned by a :class:`.Query`
under one namespace.

The :class:`.Bundle` essentially allows nesting of the tuple-based
results returned by a column-oriented :class:`_query.Query` object.
It also
is extensible via simple subclassing, where the primary capability
to override is that of how the set of expressions should be returned,
allowing post-processing as well as custom return types, without
involving ORM identity-mapped classes.

.. seealso::

    :ref:`bundles`

Constructeur(s)

Signature du constructeur	Description
__init__(self, name: 'str', exprs: '_ColumnExpressionArgument[Any]', *kw: 'Any')	Construct a new :class:`.Bundle`. _{[extrait de __init__.__doc__]}

Liste des attributs statiques

Nom de l'attribut	Valeur
allows_lambda	True
extension_type	NotExtension.NOT_EXTENSION
inherit_cache	None
is_aliased_class	False
is_attribute	False
is_bundle	True
is_clause_element	False
is_instance	False
is_mapper	False
is_property	False
is_selectable	False
proxy_set	frozenset()
single_entity	False
uses_inspection	True

Liste des propriétés

Nom de la propriété	Description
clauses
entity
entity_namespace
mapper

Liste des opérateurs

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Liste des méthodes

Toutes les méthodes Méthodes d'instance Méthodes statiques

Signature de la méthode	Description
__clause_element__(self)
create_row_processor(self, query: 'Select[Any]', procs: 'Sequence[Callable[[Row[Any]], Any]]', labels: 'Sequence[str]') -> 'Callable[[Row[Any]], Any]'	Produce the "row processing" function for this :class:`.Bundle`. _{[extrait de create_row_processor.__doc__]}
label(self, name)	Provide a copy of this :class:`.Bundle` passing a new label. _{[extrait de label.__doc__]}