Classe « MapperProperty »

Informations générales

Héritage

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

Définition

class MapperProperty(HasCacheKey, _MappedAttribute, InspectionAttr, MemoizedSlots):

Description _{[extrait de MapperProperty.doc]}

Represent a particular class attribute mapped by :class:`_orm.Mapper`.

    The most common occurrences of :class:`.MapperProperty` are the
    mapped :class:`_schema.Column`, which is represented in a mapping as
    an instance of :class:`.ColumnProperty`,
    and a reference to another class produced by :func:`_orm.relationship`,
    represented in the mapping as an instance of
    :class:`.RelationshipProperty`.

Constructeur(s)

Signature du constructeur	Description
__init__(self)

Liste des attributs statiques

Nom de l'attribut	Valeur
cascade	frozenset()
extension_type	symbol('NOT_EXTENSION')
info	<member 'info' of 'MapperProperty' 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
key	<member 'key' of 'MapperProperty' objects>
parent	<member 'parent' of 'MapperProperty' objects>

Liste des propriétés

Nom de la propriété	Description
class_attribute	Return the class-bound descriptor corresponding to this _{[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
__repr__(self)
cascade_iterator(self, type_, state, dict_, visited_states, halt_on=None)	Iterate through instances related to the given instance for _{[extrait de cascade_iterator.__doc__]}
create_row_processor(self, context, query_entity, path, mapper, result, adapter, populators)	Produce row processing functions and append to the given _{[extrait de create_row_processor.__doc__]}
do_init(self)	Perform subclass-specific initialization post-mapper-creation _{[extrait de do_init.__doc__]}
init(self)	Called after all mappers are created to assemble _{[extrait de init.__doc__]}
instrument_class(self, mapper)	Hook called by the Mapper to the property to initiate _{[extrait de instrument_class.__doc__]}
merge(self, session, source_state, source_dict, dest_state, dest_dict, load, _recursive, _resolve_conflict_map)	Merge the attribute represented by this ``MapperProperty`` _{[extrait de merge.__doc__]}
post_instrument_class(self, mapper)	Perform instrumentation adjustments that need to occur _{[extrait de post_instrument_class.__doc__]}
set_parent(self, parent, init)	Set the parent mapper that references this MapperProperty. _{[extrait de set_parent.__doc__]}
setup(self, context, query_entity, path, adapter, **kwargs)	Called by Query for the purposes of constructing a SQL statement. _{[extrait de setup.__doc__]}