Classe « ColumnProperty »

Informations générales

Héritage

builtins.object
    MemoizedSlots
builtins.object
    InspectionAttr
builtins.object
    _MappedAttribute
builtins.object
    HasCacheKey
        MapperProperty
            StrategizedProperty
                ColumnProperty

Définition

class ColumnProperty(StrategizedProperty):

Description _{[extrait de ColumnProperty.doc]}

Describes an object attribute that corresponds to a table column.

    Public constructor is the :func:`_orm.column_property` function.

Constructeur(s)

Signature du constructeur	Description
__init__(self, columns, *kwargs)	Construct a new :class:`.ColumnProperty` object. _{[extrait de __init__.__doc__]}

Liste des attributs statiques

Nom de l'attribut	Valeur
active_history	<member 'active_history' of 'ColumnProperty' objects>
cascade	frozenset()
columns	<member 'columns' of 'ColumnProperty' objects>
comparator_factory	<member 'comparator_factory' of 'ColumnProperty' objects>
deferred	<member 'deferred' of 'ColumnProperty' objects>
descriptor	<member 'descriptor' of 'ColumnProperty' objects>
doc	<member 'doc' of 'ColumnProperty' objects>
expire_on_flush	<member 'expire_on_flush' of 'ColumnProperty' objects>
extension_type	symbol('NOT_EXTENSION')
group	<member 'group' of 'ColumnProperty' objects>
info	<member 'info' of 'ColumnProperty' objects>
inherit_cache	True
instrument	<member 'instrument' of 'ColumnProperty' objects>
is_aliased_class	False
is_attribute	False
is_bundle	False
is_clause_element	False
is_instance	False
is_mapper	False
is_property	True
is_selectable	False
logger	<Logger sqlalchemy.orm.properties.ColumnProperty (WARNING)>
raiseload	<member 'raiseload' of 'ColumnProperty' objects>
strategy_key	<member 'strategy_key' of 'ColumnProperty' objects>
strategy_wildcard_key	column

Attributs statiques hérités de la classe StrategizedProperty

strategy

Attributs statiques hérités de la classe MapperProperty

key, parent

Liste des propriétés

Nom de la propriété	Description
class_attribute	Return the class-bound descriptor corresponding to this _{[extrait de __doc__]}
expression	Return the primary column or expression for this ColumnProperty. _{[extrait de __doc__]}

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)	Allow the ColumnProperty to work in expression before it is turned _{[extrait de __clause_element__.__doc__]}
__str__(self)
Comparator(prop, parentmapper, adapt_to_entity=None)	Produce boolean, comparison, and other operators for _{[extrait de Comparator.__doc__]}
copy(self)
do_init(self)
instrument_class(self, mapper)
merge(self, session, source_state, source_dict, dest_state, dest_dict, load, _recursive, _resolve_conflict_map)