/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm
Edit: /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyo (32238B)
4]c @ sT d Z d d l Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d
l m
Z
d d l m Z d d l m Z d d
l m
Z
d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z e j d e j f d Y Z d e f d YZ d e f d YZ d S( s Defines instrumentation of instances.
This module is usually not directly visible to user applications, but
defines a large part of the ORM's interactivity.
iNi ( t base( t exc( t
interfaces( t ATTR_WAS_SET( t INIT_OK( t NEVER_SET( t NO_VALUE( t PASSIVE_NO_INITIALIZE( t PASSIVE_NO_RESULT( t PASSIVE_OFF( t SQL_OK( t PathRegistryi ( t
inspection( t utilt
InstanceStatec B s e Z d Z d0 Z d0 Z d0 Z e j Z d1 Z
d0 Z d0 Z e
Z e
Z e
Z e
Z e
Z e Z d0 Z d2 Z d3 Z d Z d0 Z e j d Z e d Z e d Z e d Z e d Z e d Z! e d Z" e e j# d d
Z$ d Z% e e j# d d Z& e d
Z' e d Z( e d Z) e j d Z* e j d Z+ e j d Z, e d Z- e. e
d Z/ d0 d Z0 d Z1 d Z2 d Z3 e d Z4 d Z5 d Z6 d Z7 d Z8 d Z9 d Z: d Z; d! Z< e. d" Z= d# Z> e
d$ Z? d% Z@ e d& ZA d' ZB e d( ZC e d) ZD e d* ZE d+ ZF e
e
d, ZG d- ZH d0 d. ZI e. d0 d/ ZJ RS(4 s tracks state information at the instance level.
The :class:`.InstanceState` is a key object used by the
SQLAlchemy ORM in order to track the state of an object;
it is created the moment an object is instantiated, typically
as a result of :term:`instrumentation` which SQLAlchemy applies
to the ``__init__()`` method of the class.
:class:`.InstanceState` is also a semi-public object,
available for runtime inspection as to the state of a
mapped instance, including information such as its current
status within a particular :class:`.Session` and details
about data on individual attributes. The public API
in order to acquire a :class:`.InstanceState` object
is to use the :func:`.inspect` system::
>>> from sqlalchemy import inspect
>>> insp = inspect(some_mapped_object)
.. seealso::
:ref:`core_inspection_toplevel`
c C sF | j | _ | | _ t j | | j | _ i | _ t | _ d S( N(
t __class__t class_t managert weakreft reft _cleanupt objt committed_statet sett expired_attributes( t selfR R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt __init__Y s
c s& t j t f d j D S( sa Return a namespace representing each attribute on
the mapped object, including its current value
and history.
The returned object is an instance of :class:`.AttributeState`.
This object allows inspection of the current data
within an attribute as well as attribute history
since the last flush.
c 3 s$ | ] } | t | f Vq d S( N( t AttributeState( t .0t key( R ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pys
u s ( R
t ImmutablePropertiest dictR ( R ( ( R sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt attrsh s c C s | j d k o | j S( sy Return true if the object is :term:`transient`.
.. seealso::
:ref:`session_object_states`
N( R t Nonet _attached( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt transientx s c C s | j d k o | j S( sx Return true if the object is :term:`pending`.
.. seealso::
:ref:`session_object_states`
N( R R! R" ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt pending s
c C s | j d k o | j o | j S( s Return true if the object is :term:`deleted`.
An object that is in the deleted state is guaranteed to
not be within the :attr:`.Session.identity_map` of its parent
:class:`.Session`; however if the session's transaction is rolled
back, the object will be restored to the persistent state and
the identity map.
.. note::
The :attr:`.InstanceState.deleted` attribute refers to a specific
state of the object that occurs between the "persistent" and
"detached" states; once the object is :term:`detached`, the
:attr:`.InstanceState.deleted` attribute **no longer returns
True**; in order to detect that a state was deleted, regardless
of whether or not the object is associated with a
:class:`.Session`, use the :attr:`.InstanceState.was_deleted`
accessor.
.. versionadded: 1.1
.. seealso::
:ref:`session_object_states`
N( R R! R" t _deleted( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt deleted s c C s | j S( s Return True if this object is or was previously in the
"deleted" state and has not been reverted to persistent.
This flag returns True once the object was deleted in flush.
When the object is expunged from the session either explicitly
or via transaction commit and enters the "detached" state,
this flag will continue to report True.
.. versionadded:: 1.1 - added a local method form of
:func:`.orm.util.was_deleted`.
.. seealso::
:attr:`.InstanceState.deleted` - refers to the "deleted" state
:func:`.orm.util.was_deleted` - standalone function
:ref:`session_object_states`
( R% ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt was_deleted s c C s | j d k o | j o | j S( s{ Return true if the object is :term:`persistent`.
An object that is in the persistent state is guaranteed to
be within the :attr:`.Session.identity_map` of its parent
:class:`.Session`.
.. versionchanged:: 1.1 The :attr:`.InstanceState.persistent`
accessor no longer returns True for an object that was
"deleted" within a flush; use the :attr:`.InstanceState.deleted`
accessor to detect this state. This allows the "persistent"
state to guarantee membership in the identity map.
.. seealso::
:ref:`session_object_states`
N( R R! R" R% ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt
persistent s c C s | j d k o | j S( sx Return true if the object is :term:`detached`.
.. seealso::
:ref:`session_object_states`
N( R R! R" ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt detached s s sqlalchemy.orm.sessionc C s | j d k o | j | j k S( N( t
session_idR! t _sessions( R t
sessionlib( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR" s c C s5 | | j k r1 t | j | _ t | j | s c
C s | j j p d } | j j p! d } | j j p3 d } | j j pE d } xX| D]P} | j } | j d k }
|
ox | } d | _ | r | j r | ` n | r | r | d k r| j } | d k r | | | q qq| d k r| j } | d k r| | | qqnz | rY| d k rY| j } | d k r| | | qn= |
r| d k r| j } | d k r| | | qn d | _
qO Wd S( N( t dispatcht persistent_to_detachedR! t deleted_to_detachedt pending_to_transientt persistent_to_transientR% R R* R t _strong_obj(
R t statesR0 t to_transientR: R; R< R= t stateR& R$ R( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _detach_statesH s<
c C s0 | r t j | g | n d | _ | _ d S( N( R RB R! R* R> ( R R0 ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _detachq s c C s | j | ` d S( N( RC R ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _disposew s
c C sX t d k r d S| j } | d k r> | j | | ` n d | _ | _ | ` d S( s Weakref callback cleanup.
This callable cleans out the state when it is being garbage
collected.
this _cleanup **assumes** that there are no strong refs to us!
Will not work otherwise!
N( R R! t _instance_dictt
_fast_discardR* R> R ( R R t
instance_dict( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR { s
c C s d S( N( R! ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR s c C s- | j } | d k r% t j | Si Sd S( s Return the instance dict used by the object.
Under normal circumstances, this is always synonymous
with the ``__dict__`` attribute of the mapped object,
unless an alternative instrumentation system has been
configured.
In the case that the actual object has been garbage
collected, this accessor returns a blank dictionary.
N( R R! R RG ( R t o( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR s
c O s | d | d | d } } } | j } | j j | | | y | j | d | SWn0 t j | j j | | | Wd QXn Xd S( Ni i i ( R R9 t initt
original_initR
t safe_reraiset init_failure( t mixedt kwargsR t instancet argsR ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _initialize_instance s
c C s | j | j j | | j | S( N( R t implt get_historyR ( R R t passive( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyRS s c C s | j | j S( N( R RR ( R R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt get_impl s c C s- | | j k r" t | j | s
R R5 t modifiedt expiredt callablesR R4 t load_optionsR R t infot load_pathR ( R R5 RZ R[ R\ R R4 R] R R R^ ( R t updateR_ t serializeR t
_serialize( R t
state_dict( ( R sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt __getstate__ s$ c C sa | d } | d k r= t j | | j | _ | j | _ n d | _ | d | _ | j d i | _ | j d i | _ | j d i | _
| j d t | _ | j d t | _
d | k r | j j | d n d | k rv| d | _ y | d
| _ Wqt k
rrt | _ xK t | j D]6 } | j | | k r5| j j | | j | =q5q5WqXn( d
| k r| d
| _ n t | _ | j j g d D]" } | | k r| | | f ^ q | j r$y | j d
| _ Wq$t k
r | j d | _ d | _ q$Xn d | k rIt j | d | _ n | d | | | d S( NRO R R R5 R4 RZ R[ R^ R\ R R R] i R_ R ( R R] ( N( R! R R R R R R t getR R5 R4 t FalseRZ R[ R^ R` R\ R t KeyErrorR t listt addRX R t identity_tokent
IndexErrorR t deserializeR_ ( R Rc t instRY ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt __setstate__ sN
#
c C s~ | j | d } | d k rK | j | j j rK | j | j j | n | j j | | j rz | j j | d n d S( sK Remove the given attribute and any
callables associated with it.N( t popR! R RR t
collectiont _invalidate_collectionR t discardR\ ( R t dict_R t old( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _reset s c C s( d | j k r$ t | j | _ n d S( NR\ ( RX R R\ ( R t from_( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _copy_callables% s c sD | j j r. f d } n f d } | S( Nc sZ d | j k r i | _ n | j d } | d k rI j | n | j a s ( t TrueR[ RZ Rr R t clearRf R! R> RX R R` R t _scalar_loader_implst expire_missingR R\ t intersectiont _collection_impl_keysRo t _sa_adaptert invalidatedR- t _all_key_setR9 t expire( R Rs t modified_setRR RY Rp R ( ( Rs sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _expire? s4
( c C sI | j j d d } | j } x| D]} | j | j } | j r | re | j s% | | k re q% n | j j | | r | | k r | | =q n | j
| t } | j r | t k r | j
| n | j r | | j k r | t k r | | j | s ( R R R ( R ( ( R sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt unloaded_expirable s c s# j j f d j D S( Nc 3 s( | ] } j | j j r | Vq d S( N( R RR R ( R R ( R ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pys s ( R R R ( R ( ( R sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _unloaded_non_object s c C s d S( N( R! ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyRE s c C s | r | j s d S| rA | j | k rA t j d | j n | j | j k sY | r | r | t k r | j | k r | | j } q n | d t t f k r | j | } q n | | j | j RZ R} RE t _modifiedRi R t orm_exct ObjectDereferencedErrorR R t state_class_str( R Rs R t previousRp t is_userlandRG Rm ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _modified_event s: " c C s x! | D] } | j j | d q Wt | _ | j j t | j | | j r x6 t | j j | j | D] } | j | =qw Wn d S( s8 Commit attributes.
This is used by a partial-attribute load operation to mark committed
those attributes which were refreshed from the database.
Attributes marked as "expired" can potentially remain "expired" after
this step if a value was not populated in state.dict.
N(
R Ro R! Rf R[ R t difference_updateR R R\ ( R Rs R R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _commit s
%c C s | j | | f g | d S( sS commit all attributes unconditionally.
This is used after a flush() or a full load/refresh
to remove all pending state from the instance.
- all attributes are marked as "committed"
- the "strong dirty reference" is removed
- the "modified" flag is set to False
- any "expired" markers for scalar attributes loaded are removed.
- lazy load callables for objects / collections *stay*
Attributes marked as "expired" can potentially remain
"expired" after this step if a value was not populated in state.dict.
N( t _commit_all_states( R Rs RG ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt _commit_all s c C s x | D] \ } } | j } | j j d | k r? | d =n | j j | | rq | j rq | j j | n t | _ | _ d | _ q Wd S( s. Mass / highly inlined version of commit_all().R5 N( RX R R~ R R RZ R Rr Rf R[ R! R> ( R t iter_RG RA Rs Rc ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR 2 s
N( ( ( (K t __name__t
__module__t __doc__R! R* R t runidR
t EMPTY_SETR] R_ t insert_orderR> Rf RZ R[ R% t
_load_pendingt _orphaned_outside_of_sessionR} t is_instanceRj R- R\ R R t memoized_propertyR t propertyR# R$ R& R' R( R) t dependenciesR" R. R0 R1 R2 R3 R4 R5 R6 R8 t classmethodRB RC RD R R R RQ RS RU RW Rd Rn Ru Rw R| R R R R R R R R RE R R R R ( ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR " s
( : * . R c B sM e Z d Z d Z e d Z e d Z e d Z d Z RS( s Provide an inspection interface corresponding
to a particular attribute on a particular mapped object.
The :class:`.AttributeState` object is accessed
via the :attr:`.InstanceState.attrs` collection
of a particular :class:`.InstanceState`::
from sqlalchemy import inspect
insp = inspect(some_mapped_object)
attr_state = insp.attrs.some_attribute
c C s | | _ | | _ d S( N( RA R ( R RA R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR V s c C s | j j j | j t S( s The current value of this attribute as loaded from the database.
If the value has not been loaded, or is otherwise not present
in the object's dictionary, returns NO_VALUE.
( RA R Re R R ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt loaded_valueZ s c C s, | j j | j j | j j | j j S( s Return the value of this attribute.
This operation is equivalent to accessing the object's
attribute directly or via ``getattr()``, and will fire
off any pending loader callables if needed.
( RA R R t __get__R R ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt valued s c C s | j j | j t S( sX Return the current **pre-flush** change history for
this attribute, via the :class:`.History` interface.
This method will **not** emit loader callables if the value of the
attribute is unloaded.
.. note::
The attribute history system tracks changes on a **per flush
basis**. Each time the :class:`.Session` is flushed, the history
of each attribute is reset to empty. The :class:`.Session` by
default autoflushes each time a :class:`.Query` is invoked. For
options on how to control this, see :ref:`session_flushing`.
.. seealso::
:meth:`.AttributeState.load_history` - retrieve history
using loader callables if the value is not locally present.
:func:`.attributes.get_history` - underlying function
( RA RS R R ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt historyq s c C s | j j | j t t A S( s Return the current **pre-flush** change history for
this attribute, via the :class:`.History` interface.
This method **will** emit loader callables if the value of the
attribute is unloaded.
.. note::
The attribute history system tracks changes on a **per flush
basis**. Each time the :class:`.Session` is flushed, the history
of each attribute is reset to empty. The :class:`.Session` by
default autoflushes each time a :class:`.Query` is invoked. For
options on how to control this, see :ref:`session_flushing`.
.. seealso::
:attr:`.AttributeState.history`
:func:`.attributes.get_history` - underlying function
.. versionadded:: 0.9.0
( RA RS R R R ( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt load_history s ( R R R R R R R R R ( ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR G s
RV c B s) e Z d Z d Z d Z d Z RS( s A writable placeholder for an unloaded collection.
Stores items appended to and removed from a collection that has not yet
been loaded. When the collection is loaded, the changes stored in
PendingCollection are applied to it to produce the final result.
c C s" t j | _ t j | _ d S( N( R
t IdentitySett
deleted_itemst OrderedIdentitySett added_items( R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR s c C s6 | | j k r" | j j | n | j j | d S( N( R t removeR Ri ( R R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt append s c C s6 | | j k r" | j j | n | j j | d S( N( R R R Ri ( R R ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyR s ( R R R R R R ( ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyRV s ( R R t R R R R R R R R R R R R
t
path_registryR R R R
t _self_inspectst InspectionAttrInfoR R1 R RV ( ( ( sG /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/state.pyt
s. '`