sqlalchemy.orm.strategies.LazyLoader

class documentation

class LazyLoader(AbstractRelationshipLoader, util.MemoizedSlots):

Provide loading behavior for a .RelationshipProperty with "lazy=True", that is loads when first accessed.

Method	`__init__`	Undocumented
Method	`_emit_lazyload`	Undocumented
Method	`_generate_lazy_clause`	Undocumented
Method	`_get_ident_for_use_get`	Undocumented
Method	`_invoke_raise_load`	Undocumented
Method	`_load_for_state`	Undocumented
Method	`_memoized_attr__simple_lazy_clause`	Undocumented
Method	`create_row_processor`	Establish row processing functions for a given QueryContext.
Method	`init_class_attribute`	Undocumented
Class Variable	`__slots__`	Undocumented
Instance Variable	`_bind_to_col`	Undocumented
Instance Variable	`_equated_columns`	Undocumented
Instance Variable	`_lazywhere`	Undocumented
Instance Variable	`_order_by`	Undocumented
Instance Variable	`_raise_always`	Undocumented
Instance Variable	`_raise_on_sql`	Undocumented
Instance Variable	`_rev_bind_to_col`	Undocumented
Instance Variable	`_rev_equated_columns`	Undocumented
Instance Variable	`_rev_lazywhere`	Undocumented
Instance Variable	`is_aliased_class`	Undocumented
Instance Variable	`is_class_level`	Undocumented
Instance Variable	`use_get`	Undocumented

Inherited from AbstractRelationshipLoader:

Instance Variable	`entity`	Undocumented
Instance Variable	`mapper`	Undocumented
Instance Variable	`target`	Undocumented
Instance Variable	`uselist`	Undocumented

Inherited from LoaderStrategy (via AbstractRelationshipLoader):

Method	`__str__`	Undocumented
Method	`setup_query`	Establish column and other state for a given QueryContext.
Instance Variable	`key`	Undocumented
Instance Variable	`parent`	Undocumented
Instance Variable	`parent_property`	Undocumented
Instance Variable	`strategy_key`	Undocumented
Instance Variable	`strategy_opts`	Undocumented

Inherited from MemoizedSlots:

Method	`__getattr__`	Undocumented
Method	`_fallback_getattr`	Undocumented

def __init__(self, parent, strategy_key):

overrides sqlalchemy.orm.strategies.AbstractRelationshipLoader.__init__

Undocumented

@util.preload_module('sqlalchemy.orm.strategy_options')
def _emit_lazyload(self, session, state, primary_key_identity, passive, loadopt, extra_criteria):

Undocumented

def _generate_lazy_clause(self, state, passive):

Undocumented

def _get_ident_for_use_get(self, session, state, passive):

Undocumented

def _invoke_raise_load(self, state, passive, lazy):

Undocumented

def _load_for_state(self, state, passive, loadopt=None, extra_criteria=()):

Undocumented

def _memoized_attr__simple_lazy_clause(self):

Undocumented

def create_row_processor(self, context, query_entity, path, loadopt, mapper, result, adapter, populators):

overrides sqlalchemy.orm.interfaces.LoaderStrategy.create_row_processor

Establish row processing functions for a given QueryContext.

This method fulfills the contract specified by MapperProperty.create_row_processor().

StrategizedProperty delegates its create_row_processor() method directly to this method.

def init_class_attribute(self, mapper):

overrides sqlalchemy.orm.interfaces.LoaderStrategy.init_class_attribute

Undocumented

__slots__: tuple[str, ...] =

overrides sqlalchemy.orm.strategies.AbstractRelationshipLoader.__slots__

Undocumented

_bind_to_col =

Undocumented

_equated_columns =

Undocumented

_lazywhere =

Undocumented

_order_by =

Undocumented

_raise_always =

Undocumented

_raise_on_sql =

Undocumented

_rev_bind_to_col =

Undocumented

_rev_equated_columns =

Undocumented

_rev_lazywhere =

Undocumented

is_aliased_class =

Undocumented

is_class_level: bool =

overrides sqlalchemy.orm.interfaces.LoaderStrategy.is_class_level

Undocumented

use_get =

Undocumented