Classe « Bundle »

Informations générales

Héritage

            builtins.object
                InspectionAttr
        builtins.object
            HasMemoized
        builtins.object
            HasCacheKey
                MemoizedHasCacheKey
        builtins.object
            SupportsAnnotations
                SupportsCloneAnnotations
builtins.object
    SQLRole
        ColumnListRole
    builtins.object
        UsesInspection
    builtins.object
        AllowsLambdaRole
            ColumnsClauseRole
                ORMColumnsClauseRole
                    Bundle

Définition

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

Description _{[extrait de Bundle.doc]}

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.

    .. versionadded:: 0.9.0

    .. seealso::

        :ref:`bundles`

Constructeur(s)

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

Liste des attributs statiques

Nom de l'attribut	Valeur
allows_lambda	True
c	None
columns	None
extension_type	symbol('NOT_EXTENSION')
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
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, procs, labels)	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__]}