관리-도구
편집 파일: attributes.cpython-38.pyc
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Z_basesrt �_update�_active_history) �selfrj rk rx rm rl r~ r �managerrB r{ r{ �I/opt/hc_python/lib64/python3.8/site-packages/sqlalchemy/orm/attributes.py�__init__� s zQueryableAttribute.__init__r� r ��returnc C s t | j| jjj| j| jjffS �N)� _queryable_attribute_unreducerk r� Zmapperrj �entity�r� r{ r{ r� � __reduce__� s ��z QueryableAttribute.__reduce__�boolc C s | j jS r� )rl � uses_objectsr� r{ r{ r� �_impl_uses_objects� s z%QueryableAttribute._impl_uses_objectsr7 �History)�instance�passiver� c C s | j �t|�t|�|�S r� )rl � get_historyr! r )r� r� r� r{ r{ r� r� s �z QueryableAttribute.get_historyr] c C s | j jS )a� Return the 'info' dictionary for the underlying SQL element. 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Zmemoized_propertyrm r� r� r� r� r� r{ r r{ r� �ProxyV s6 � � r r� )r� Z from_instance)ri r r� r� r? Z monkeypatch_proxied_specials)r� r r{ r r� �create_proxied_attributeJ s �r ZREMOVE�APPENDZREPLACEZ BULK_REPLACEZMODIFIEDc @ s@ e Zd ZdZdZddd�dd�Zdd � Zed d � �Zd d � Z dS )�AttributeEventTokena� A token propagated throughout the course of a chain of attribute events. Serves as an indicator of the source of the event and also provides a means of controlling propagation across a chain of attribute operations. The :class:`.Event` object is sent as the ``initiator`` argument when dealing with events such as :meth:`.AttributeEvents.append`, :meth:`.AttributeEvents.set`, and :meth:`.AttributeEvents.remove`. The :class:`.Event` object is currently interpreted by the backref event handlers, and is used to control the propagation of operations across two mutually-dependent attributes. .. versionchanged:: 2.0 Changed the name from ``AttributeEvent`` to ``AttributeEventToken``. :attribute impl: The :class:`.AttributeImpl` which is the current event initiator. :attribute op: The symbol :attr:`.OP_APPEND`, :attr:`.OP_REMOVE`, :attr:`.OP_REPLACE`, or :attr:`.OP_BULK_REPLACE`, indicating the source operation. �rl r� � parent_tokenry z util.symbol)�attribute_implr� c C s || _ || _| j j| _d S r� r )r� r r� r{ r{ r� r� s z AttributeEventToken.__init__c C s" t |t�o |j| jko |j| jkS r� )r� r rl r� )r� r� r{ r{ r� �__eq__ s � �zAttributeEventToken.__eq__c C s | j jS r� )rl rk r� r{ r{ r� rk & s zAttributeEventToken.keyc C s | j �|�S r� r� )r� r� r{ r{ r� r� * s z AttributeEventToken.hasparentN) r� r� r� r� r� r� r rn rk r� r{ r{ r{ r� r � s r c @ s� e Zd ZU dZded< ded< ded< ded< ded< dZd ed < d ed < d ed < dKddddddddddddd� dd�ZdZdd�d d �Zd d � Z d d!� Z e e e �Z dLd"ddd#�d$d%�Z d"d"dd&d'�d(d)�Zefd"d*d+d,d-�d.d/�Zefd"d*d+d0d-�d1d2�Zd"d*dd3�d4d5�Zefd"d*d+dd-�d6d7�Zd"dd+dd8�d9d:�Zefd"d*ddd+d&d;�d<d=�Zefd"d*ddd+d&d;�d>d?�Zefd"d*ddd+d&d;�d@dA�Zd ed dfd"d*ddd+ddd&dB�dCdD�Zd"d*d&d3�dEdF�Zefd"d*d+dd-�dGdH�ZdIdJ� Z d S )Mry z4internal implementation for instrumented attributes.r� � collection� default_accepts_scalar_loaderr� r� �dynamicFr �_replace_token� _remove_token� _append_tokenNTr| rv �Optional[_LoaderCallable]�"_Dispatch[QueryableAttribute[Any]]z Optional[Callable[..., bool]]� Optional[AttributeEventToken]zOptional[bool]r ) rj rk � callable_rt � trackparent�compare_function�active_historyr �load_on_unexpire�send_modified_events�accepts_scalar_loaderr� c K s� || _ || _|| _|| _|| _|p$| | _| | _|dkr@tj| _ n|| _ | dk rV| | _ n| j | _ | � dd�} | | _ |r|d| j_| | _t| t�| _dS )a� Construct an AttributeImpl. :param \class_: associated class :param key: string name of the attribute :param \callable_: optional function which generates a callable based on a parent instance, which produces the "default" values for a scalar or collection attribute when it's first accessed, if not present already. :param trackparent: if True, attempt to track if an instance has a parent attached to it via this attribute. :param compare_function: a function that compares two values which are normally assignable to this attribute. :param active_history: indicates that get_history() should always return the "old" value, even if it means executing a lazy callable upon attribute change. :param parent_token: Usually references the MapperProperty, used as a key for the hasparent() function to identify an "owning" attribute. Allows multiple AttributeImpls to all match a single owner attribute. :param load_on_unexpire: if False, don't include this attribute in a load-on-expired operation, i.e. the "expired_attribute_loader" process. The attribute can still be in the "expired" list and be considered to be "expired". Previously, this flag was called "expire_missing" and is only used by a deferred column attribute. :param send_modified_events: if False, the InstanceState._modified_event method will have no effect; this means the attribute will never show up as changed in a history entry. N�_deferred_historyFT)rj rk r rt r r r �operator�eq�is_equalr r �popr r� r r � OP_MODIFIED�_modified_token)r� rj rk r rt r r r r r r r r� r r{ r{ r� r� A s& ; zAttributeImpl.__init__) rj rk r rt r r r r r r" r r r� c C s | j j� d| j� �S r� r� r� r{ r{ r� r� � s zAttributeImpl.__str__c C s | j jS )z(Backwards compat for impl.active_history�rt r� r� r{ r{ r� �_get_active_history� s z!AttributeImpl._get_active_historyc C s || j _d S r� r# r� r{ r{ r� �_set_active_history� s z!AttributeImpl._set_active_historyrh r� c C s* d}| j st|��|j�t| j�|�dk S )a4 Return the boolean value of a `hasparent` flag attached to the given state. The `optimistic` flag determines what the default return value should be if no `hasparent` flag can be located. As this function is used to determine if an instance is an *orphan*, instances that were loaded from storage should be assumed to not be orphans, until a True/False value for this flag is set. An instance attribute that is loaded by a callable function will also not have a `hasparent` flag. �6This AttributeImpl is not configured to track parents.F)r r� �parentsr� �idr )r� r� r� �msgr{ r{ r� r� � s �zAttributeImpl.hasparentr� )r� � parent_stater� r� c C s� d}| j st|��t| j�}|r,||j|< n`||jkr�|j| }|dk r�|j|jkr�|�� dkr~t�dt |�t |�| jf ��dS d|j|< dS )z�Set a boolean flag on the given item corresponding to whether or not it is attached to a parent object via the attribute represented by this ``InstrumentedAttribute``. r& FNz�Removing state %s from parent state %s along attribute '%s', but the parent record has gone stale, can't be sure this is the most recent parent.) r r� r( r r' rk �objr� ZStaleDataErrorr; )r� r� r* r� r) Zid_Z last_parentr{ r{ r� � sethasparent� s, � � ��� zAttributeImpl.sethasparentrO r7 r� �r� r� r� r� c C s t � �d S r� ��NotImplementedError�r� r� r� r� r{ r{ r� r� � s zAttributeImpl.get_history�_AllPendingTypec C s t � �dS )a� Return a list of tuples of (state, obj) for all objects in this attribute's current state + history. Only applies to object-based attributes. This is an inlining of existing functionality which roughly corresponds to: get_state_history( state, key, passive=PASSIVE_NO_INITIALIZE).sum() Nr. r0 r{ r{ r� �get_all_pending� s z AttributeImpl.get_all_pending�r� r� r� c C s@ | j |kstd��d}| jjD ] }||||�}|tk r |}q |S )z=Produce an empty value for an uninitialized scalar attribute.�O_default_value should only be invoked for an uninitialized or expired attributeN)rk r� rt Z init_scalarr )r� r� r� r� �fn�retr{ r{ r� �_default_value s � z AttributeImpl._default_valuec C s� | j |kr|| j S | j }||jks2|j| tkr�|t@ s>tS | �|||�}|tks\|tkr`|S |tkr�z || W S tk r� } ztd| �|�W 5 d}~X Y q�X n|tk r�| � |||�S |t @ s�tS | � ||�S dS )z�Retrieve a value from the given object. If a callable is assembled on this object's attribute, and passive is False, the callable will be executed and the resulting value will be set as the new value for this attribute. z=Deferred loader for attribute %r failed to populate correctlyN) rk �committed_stater, r r3 �_fire_loader_callablesr �KeyErrorr �set_committed_valuer r7 )r� r� r� r� rk r� r� r{ r{ r� r� ' s8 � � ���zAttributeImpl.get�r� rk r� r� c C sZ | j r"| jr"||jkr"|�||�S ||jkr@|j| }|||�S | jrR| �||�S tS d S r� )r r �expired_attributesZ _load_expiredZ callablesr r )r� r� rk r� r r{ r{ r� r9 T s ��� z$AttributeImpl._fire_loader_callables�r� r� r� � initiatorr� r� c C s | j |||||d� d S �N�r� �r� �r� r� r� r� r? r� r{ r{ r� �appende s zAttributeImpl.appendc C s | j ||d |||d� d S )N)r� � check_oldrB rC r{ r{ r� �removeo s �zAttributeImpl.removec C s | j ||d |||dd� d S )NT)r� rE r rB rC r{ r{ r� r { s �zAttributeImpl.pop�r� r� r� r? r� rE r r� c C s t � �d S r� r. )r� r� r� r� r? r� rE r r{ r{ r� r� � s zAttributeImpl.setc C s t � �d S r� r. )r� r� r� r{ r{ r� r� � s zAttributeImpl.deletec C s> | j |jkr*|j| j }|tkr$dS |S n| j|||d�S dS )z,return the unchanged value of this attributeNrA )rk r8 r, r� )r� r� r� r� r� r{ r{ r� �get_committed_value� s z!AttributeImpl.get_committed_valuec C s ||| j < |�|| j g� |S )z=set an attribute value on the given instance and 'commit' it.)rk �_commit)r� r� r� r� r{ r{ r� r; � s z!AttributeImpl.set_committed_value)FNFNTTN)F) r� r� r� r� r� �_is_has_collection_adapterr� r� r� r$ r% rn r r� r, r4 r� r2 r2 r7 r� r9 rD rF r r� r� rH r; r{ r{ r{ r� ry 2 sb �&U �/� ��-���� �ry c s� e Zd ZdZdZdZdZdZdZdZ � fdd�Z ddd d �d d �Z e fdd ddd�dd�Z de ddfdd dddddd d�dd�Zddddddd �d d �Zddddd d �d d!�Z� ZS )"�ScalarAttributeImplz8represents a scalar value-holding InstrumentedAttribute.TF)r r r c s0 t � j||� t| t� | _| _t| t�| _d S r� )r� r� r � OP_REPLACEr r � OP_REMOVEr )r� �argr� r� r{ r� r� � s � z ScalarAttributeImpl.__init__rh rO r� r3 c C s� | j jr| �||t�}n|�| jt�}| j jr@| �|||| j� |� || |� |� | jt�}|tkr�|tkr�|j s�| j|j kr�t d| ��d S )N� %s object does not have a value)rt r� r� r6 rk r, rF �fire_remove_eventr �_modified_eventr Zexpiredr= r� �r� r� r� �old�existingr{ r{ r� r� � s ��� �zScalarAttributeImpl.deletezDict[str, Any]r7 r� r- c C sv | j |kr t�| ||| j �S | j |jkr8t�| |t�S |t@ rH|tN }| j|||d�}|tkrdtS t�| ||�S d S r@ ) rk r� �from_scalar_attributer8 r, r r� r3 � HISTORY_BLANK)r� r� r� r� �currentr{ r{ r� r� � s z ScalarAttributeImpl.get_historyNr r r� r� rG c C s\ | j jr| �||t�}n|�| jt�}| j jr@| �|||||�}|�|| |� ||| j< d S r� ) rt r� r� r6 rk r, r� �fire_replace_eventrQ � r� r� r� r� r? r� rE r rS r{ r{ r� r� � s �zScalarAttributeImpl.setrd �r� r� r� �previousr? r� c C s& | j jD ]}|||||p | j�}q|S r� )rt r� r �r� r� r� r� r[ r? r5 r{ r{ r� rX s �z&ScalarAttributeImpl.fire_replace_event�r� r� r� r? r� c C s$ | j jD ]}||||p| j� qd S r� )rt rF r �r� r� r� r� r? r5 r{ r{ r� rP s z%ScalarAttributeImpl.fire_remove_event)r� r� r� r� r r� r� r r r� r� r� r4 r� r� rX rP r� r{ r{ r� r� rK � s$ �� rK c @ s� e Zd ZdZdZdZdZdZdZdddd�d d �Z e fddd d d �dd�Z e fddd dd �dd�Z de ddfddddd dddd�dd�Zdddddd�dd �Zddd ddd d �d d �ZdS )!�ScalarObjectAttributeImplz�represents a scalar-holding InstrumentedAttribute, where the target object is also instrumented. Adds events to delete/set operations. FTr{ rh rO r� r3 c C s� | j jr"| j||ttB tB d�}n | j||ttA tB tB d�}| � |||| j � |� | j t �}|t kr�|tk r�|j d kr�td| ��d S )NrA rO )rt r� r� r5 r( r# r0 r r+ rP r r rk r, r3 r� rR r{ r{ r� r� + s8 ���������z ScalarObjectAttributeImpl.deleter7 r� r- c C s� | j |kr|| j }n,|t@ r&|tN }| j|||d�}|tkrBtS | jsVt�| ||�S |j�| j t �}|tkr�|t t B t B t B tB B }| �|| j |�}tj| |||d�S d S )NrA )�original)rk r r� r3 rV r r� �from_object_attributer8 � _NO_HISTORYr5 r( r# r+ r r9 )r� r� r� r� rW r` Zloader_passiver{ r{ r� r� K sB ����� � �z%ScalarObjectAttributeImpl.get_historyr1 c C s� | j |kr|| j }n |t@ r0| j|||d�}ng S |d k r\|tk r\|tk r\t|�|fg}ndg}| j |jkr�|j| j }|d k r�|tk r�|tk r�||k r�|�t|�|f� |S )NrA )NN)rk r r� r3 r, r! r8 rD )r� r� r� r� rW r6 r` r{ r{ r� r2 m s2 ��� ����z)ScalarObjectAttributeImpl.get_all_pendingNr r r� rG c C s� | j jr"| j||ttB tB d�}n | j||ttA tB tB d�}|dk rz|t k rz||k rz|r^dS t dt |�t |�| j f ��| �|||||�}||| j < dS )z'Set a value on the given InstanceState.rA Nz2Object %s not associated with %s on attribute '%s')rt r� r� r5 r( r# r0 r r+ r3 � ValueErrorr" r; rk rX rY r{ r{ r� r� � sD ������ �����z ScalarObjectAttributeImpl.setr] c C sX | j r&|d ttfkr&| �t|�|d� | jjD ]}||||p@| j� q.|�|| |� d S )NF) r r3 r, r, r! rt rF r rQ r^ r{ r{ r� rP � s � z+ScalarObjectAttributeImpl.fire_remove_eventrd rZ c C s� | j r.||k r.|d ttfkr.| �t|�|d� | jjD ]}|||||pJ| j�}q6|�|| |� | j r~|d k r~| �t|�|d� |S )NFT) r r3 r, r, r! rt r� r rQ r\ r{ r{ r� rX � s& � �z,ScalarObjectAttributeImpl.fire_replace_event)r� r� r� r� r r� r� r r� r� r4 r� r2 r2 r� rP rX r{ r{ r{ r� r_ s$ $�&�)� -r_ c @ s� e Zd ZU dZded< dZdddddd �d d �Zed dd dddd�dd��Zed!dd dddd�dd��Zed"dd dddd�dd��Zde j fdd dddd�dd�Zde j dddfdd dd dddddd � d d �Z dS )#�HasCollectionAdapterr{ r� r Trh rS rT r� �r� r �adapter� fire_eventr� c C s t � �d S r� r. �r� r� r rf rg r{ r{ r� � _dispose_previous_collection� s z1HasCollectionAdapter._dispose_previous_collection.rO � Literal[None]� Literal[PassiveFlag.PASSIVE_OFF]�r� r� � user_datar� r� c C s d S r� r{ �r� r� r� rm r� r{ r{ r� �get_collection� s z#HasCollectionAdapter.get_collectionr7 c C s d S r� r{ rn r{ r{ r� ro s �$Optional[_AdaptedCollectionProtocol]�IUnion[Literal[LoaderCallableStatus.PASSIVE_NO_RESULT], CollectionAdapter]c C s d S r� r{ rn r{ r{ r� ro s Nc C s t � �d S r� r. rn r{ r{ r� ro s Fr r � r� r� r� r? r� rE r �_adaptr� c C s t � �d S r� r. ) r� r� r� r� r? r� rE r rs r{ r{ r� r� & s zHasCollectionAdapter.set)..)..)..) r� r� r� r� r� rJ ri r ro r7 r4 r� r{ r{ r{ r� rd � s2 � � ���rd z"TypeGuard[CollectionAttributeImpl])rl r� c C s d S r� r{ )rl r{ r{ r� � _is_collection_attribute_impl6 s rt r c s< e Zd ZU dZdZdZdZdZdZde d< dZ dO� fdd � Z d d � Z e fd d ddd�dd�Zefd d ddd�dd�Zd d ddddd�dd�Zd d ddddd�d d �Zd d ddd d �d d!�Zd d d"ddd d�d#d$�Zd d d d%�d&d'�Zd d d(d%�d)d*�Zd d+d,�d-d.�Ze fd d d"ddd d/�d0d1�Ze fd d d"ddd d/�d2d3�Ze fd d d"ddd d/�d4d5�Zdej dddfd d d"ddd"d6d6d d7� d8d9�Z d d(d:d6d d;�d<d=�Z d(d d>�d?d@�Z d d d"d(dA�dBdC�Z e dPd d dEdFd:dG�dHdI��Z!e dQd d d(dd:dG�dJdI��Z!e dDe fd d dKddLdG�dMdI��Z!de fd d dKddLdG�dNdI�Z!� Z"S )R�CollectionAttributeImpla� A collection-holding attribute that instruments changes in membership. Only handles collections of instrumented objects. InstrumentedCollectionAttribute holds an arbitrary, user-specified container object (defaulting to a list) and brokers access to the CollectionAdapter, a "view" onto that object that presents consistent bag semantics to the orm layer independent of the user data implementation. TFr �_bulk_replace_token)�copy�collection_factoryr r rv �_duck_typed_asNc s� t � j||||f||d�| �� |d kr.| j}|| _|| _t| t�| _t| t�| _ t| t �| _ t � | �� �| _t| jdd �r�t�| d�dd� �} t�| d�dd� �} d S ) N)r r � _sa_linker�init_collectionc S s |� |� d S r� �rz ��targetr �collection_adapterr{ r{ r� �link~ s z.CollectionAttributeImpl.__init__.<locals>.link�dispose_collectionc S s |� d � d S r� r| r} r{ r{ r� �unlink� s z0CollectionAttributeImpl.__init__.<locals>.unlink)r� r� � _CollectionAttributeImpl__copyrw rx r � OP_APPENDr rM r �OP_BULK_REPLACErv r? �duck_type_collectionry r� r= Z listens_for) r� rj rk r rt � typecallabler � copy_functionr r� r� r� r� r{ r� r� [ s4 ��� � z CollectionAttributeImpl.__init__c C s dd� t �|�D �S )Nc S s g | ]}|�qS r{ r{ )r� �yr{ r{ r� � <listcomp>� s z2CollectionAttributeImpl.__copy.<locals>.<listcomp>)r r )r� �itemr{ r{ r� Z__copy� s z CollectionAttributeImpl.__copyrh rO r7 r� r- c C sv | j |||d�}|tkrJ|tj@ rD| j|jkrD|j| j }|�t�S tS n(|tj@ rd| j|jksdt�t � | ||�S d S r@ ) r� r3 r7 r rk �_pending_mutationsZmerge_with_historyrV r� r� �from_collection)r� r� r� r� rW �pendingr{ r{ r� r� � s � � z#CollectionAttributeImpl.get_historyr1 c s� | j |krg S || j }t|d�}| j |jkr�|j| j }|tk r�dd� |D �}dd� |D �}t|�� t|���fdd�|D ��fdd�|D � � fdd�|D � S dd� |D �S ) N� _sa_adapterc S s$ g | ] }|d k rt |�pd |f�qS r� r �r� �cr{ r{ r� r� � s �z;CollectionAttributeImpl.get_all_pending.<locals>.<listcomp>c S s$ g | ] }|d k rt |�pd |f�qS r� r r� r{ r{ r� r� � s �c s g | ]\}}|� kr||f�qS r{ r{ �r� �s�o�� original_setr{ r� r� � s �c s g | ]\}}|� kr||f�qS r{ r{ r� r� r{ r� r� � s c s g | ]\}}|� kr||f�qS r{ r{ r� �� current_setr{ r� r� � s �c S s g | ]}t |�|f�qS r{ r )r� r� r{ r{ r� r� � s )rk r� r8 r, �dict)r� r� r� r� rW r` �current_states�original_statesr{ �r� r� r� r2 � s4 �� �� ���z'CollectionAttributeImpl.get_all_pendingrd r z Optional[Any])r� r� r� r? rk r� c C sX | j jD ]}||||p| j|d�}q|�|| td� | jrT|d k rT| �t|�|d� |S )N�rk T)rt rD r rQ r, r r, r! �r� r� r� r� r? rk r5 r{ r{ r� �fire_append_event� s z)CollectionAttributeImpl.fire_append_eventc C s( | j jD ]}||||p| j|d�}q|S )Nr� )rt Zappend_wo_mutationr r� r{ r{ r� � fire_append_wo_mutation_event� s z5CollectionAttributeImpl.fire_append_wo_mutation_eventr� )r� r� r? rk r� c C s |� || td� dS )af A special event used for pop() operations. The "remove" event needs to have the item to be removed passed to it, which in the case of pop from a set, we don't have a way to access the item before the operation. the event is used for all pop() operations (even though set.pop is the one where it is really needed). TN)rQ r, )r� r� r� r? rk r{ r{ r� �fire_pre_remove_event� s z-CollectionAttributeImpl.fire_pre_remove_eventr c C sX | j r |d k r | �t|�|d� | jjD ]}||||p:| j|d� q(|�|| td� d S )NFr� T)r r, r! rt rF r rQ r, r� r{ r{ r� rP � s z)CollectionAttributeImpl.fire_remove_eventr3 c C s@ | j |krd S |�|| td� | �||j�}|�� || j = d S r� )rk rQ r, ro r� Zclear_with_event)r� r� r� r r{ r{ r� r� s z CollectionAttributeImpl.deleterS c C sF | j |kstd��| j |jkr*|j| j S | �|�\}}|�|� |S )z;Produce an empty collection for an un-initialized attributer4 )rk r� �_empty_collections�_initialize_collectionZ _set_empty)r� r� r� rf rm r{ r{ r� r7 s � z&CollectionAttributeImpl._default_valuez4Tuple[CollectionAdapter, _AdaptedCollectionProtocol])r� r� c C s0 |j �| j|| j�\}}| j�|||� ||fS r� )r� Zinitialize_collectionrk rx rt r{ )r� r� rf r r{ r{ r� r� - s �z.CollectionAttributeImpl._initialize_collectionr> c C sv | j ||d |d�}|tkrT| j||||td�}| j|ks@td��|�| j��|� n trft |t �sft�|� ||� d S �N)rm r� r� z,Collection was loaded during event handling.) ro r3 r� r* rk r� �_get_pending_mutationrD r r� rT Zappend_with_event�r� r� r� r� r? r� r r{ r{ r� rD 8 s, � ���z CollectionAttributeImpl.appendc C sx | j ||jd |d�}|tkrV| j||||td� | j|ksBtd��|�| j��|� n t rht |t �sht�|� ||� d S r� ) ro r� r3 rP r* rk r� r� rF r r� rT Zremove_with_eventr� r{ r{ r� rF P s ���z CollectionAttributeImpl.removec C s8 z| j |||||d� W n tttfk r2 Y nX d S r@ )rF rc r: � IndexErrorrC r{ r{ r� r f s zCollectionAttributeImpl.popr� rr c C sn | } } d } | � |�\} } |r�| jd k r4| �| �} q�t�| �}| j}||k rx| d krXdp^| jj}| jj}td||f ��t| d�r�| � � } q�|t kr�t | �} | � � } q�t | �} nt�| �t kr�t |�} t | �}| j}| jj|||| d� | j||t|tj@ A d�}|tk�r| �||�}n|| k�r(d S |�|| |d� |j}| || j< tj||| |d� | �|||d� d S )Nr� z/Incompatible collection type: %s is not %s-like� _sa_iterator)�keysrA T)r? ) r� Z _converterr? r� ry r� r� � TypeErrorr� r� r� �list�values�iterrv rt Z bulk_replacer� r5 r7 r+ r3 r7 rQ r� rk r ri )r� r� r� r� r? r� rE r rs �iterableZ orig_iterableZnew_keysZnew_collectionrm Z setting_typeZreceiving_type�given�wanted� new_valuesZevtrS �old_collectionr{ r{ r� r� v sd ���� � �zCollectionAttributeImpl.setrT re c C s, |` |j�| jd � |r(| j�|||� d S r� )r� r� r rk rt r� rh r{ r{ r� ri � s z4CollectionAttributeImpl._dispose_previous_collection)r r� c C s t |d�}d|_d S )Nr� T)r� Z invalidated)r� r rf r{ r{ r� �_invalidate_collection� s z.CollectionAttributeImpl._invalidate_collection)r� r� r� r� c C s� | � |�\}}|r |�|� ||j| j< |�|| jg� | j|jkr�|�|| |d� |j�| j�}|j}|j }|D ]} |� | � qr|D ]} |� | � q�|S )z=Set an attribute value on the given instance and 'commit' it.T) r� Z append_multiple_without_eventr� rk rI r� rQ r Z added_itemsZ deleted_itemsZappend_without_eventZremove_without_event) r� r� r� r� r rm r� �addedZremovedr� r{ r{ r� r; � s z+CollectionAttributeImpl.set_committed_value.rj rk rl c C s d S r� r{ rn r{ r{ r� ro � s z&CollectionAttributeImpl.get_collectionc C s d S r� r{ rn r{ r{ r� ro s rp rq c C s d S r� r{ rn r{ r{ r� ro s c C s6 |dkr0| j |||d�}|tjkr&|S td|�}|jS )z�Retrieve the CollectionAdapter associated with the given state. if user_data is None, retrieves it from the state using normal "get()" rules, which will fire lazy callables or return the "empty" collection value. NrA rS )r� r$ r3 r r� )r� r� r� rm r� Zfetch_user_datar{ r{ r� ro s )NFNN)..)..)#r� r� r� r� r� r r r� r r� r� r� r� r4 r� r2 r2 r� r� r� rP r� r7 r� rD rF r r7 r� ri r� r; r ro r� r{ r{ r� r� ru > sn �+� �- � � �� Q � ���ru zQueryableAttribute[Any]r� r� )r rk �uselistr� c s� �j j��j ��fdd�� � ���fdd�}� ��fdd�}���fdd�}�rhtj�d |d d d d � ntj�d |d d d d � tj�d |d d d d � dS )z6Apply listeners to synchronize a two-way relationship.c s$ t dt| �|j|j� jjf ��d S )Nz�Bidirectional attribute conflict detected: Passing object %s to attribute "%s" triggers a modify event on attribute "%s" via the backref "%s".)rc r; r rl )� child_stater? � child_impl)r r{ r� �_acceptable_key_err@ s ���z.backref_listeners.<locals>._acceptable_key_errc s ||kr |S |d k r~|t k r~|tk r~t|�t|� }}|j� j}|jsV|jsV|j}n|j }||k r~|j ||| � � �j t d� |d k �r t|�t|� } } | j� j} |j�k r�|j| jk rȈ | || � | j } t| �r�| jnd } || k �r || k �r | j| | | � � |t d� |S r@ )r3 r, r! r r� rl r r r r r r+ r r0 r rt rv rD )r� �childZoldchildr? r� � old_stateZold_dictrl Zcheck_recursive_tokenr� � child_dictr� �check_append_token�check_bulk_replace_token)r� rk � parent_implr r{ r� �"emit_backref_from_scalar_set_eventN sd ���� � � � � �����z=backref_listeners.<locals>.emit_backref_from_scalar_set_eventc s� |d kr d S t |�t|� }}|j� j}|j�k rL|j|jk rL� | ||� |j}t|�r`|jnd }||k r�||k r�|j||| � � |t d� |S r@ ) r! r r� rl r r rt rv rD r+ r0 ) r� r� r? r� r� r� r� r� r� )r� rk r r{ r� �)emit_backref_from_collection_append_event� s4 � � �����zDbackref_listeners.<locals>.emit_backref_from_collection_append_eventc s� |d k r�|t k r�|tk r�t|�t|� }}|j� j}|js\|js\|j}|j }�oX�j } n |j}t |�rp|j nd }d} ||k r�||k r�| r�t � | j�j |�s�|j||| �� |td� d S )NFrA )r3 r, r! r r� rl r r r r rt rv r? Z has_dupesr� rk r r+ r0 ) r� r� r? r� r� r� r� Zcheck_remove_tokenZcheck_replace_tokenZcheck_for_dupes_on_remove)rk r� r� r{ r� �)emit_backref_from_collection_remove_event� sF ���� ���� ��zDbackref_listeners.<locals>.emit_backref_from_collection_remove_eventrD T)r �rawZ include_keyr� rF N)rl r r= �listen)r rk r� r� r� r� r{ )r� r rk r� r r� r� �backref_listeners0 s> C$0� � �r� Z NO_HISTORYc @ s� e Zd ZU dZded< ded< ded< dd�dd �Zdd�d d �Zd d�d d�Zd d�dd�Zd d�dd�Z dd�dd�Z ddd d�dd�Z d d�dd�Z e dd d d d �d d ��Ze efd!d d d d d"�d#d$��Ze d%d d d d �d&d'��Zd(S ))r� a A 3-tuple of added, unchanged and deleted values, representing the changes which have occurred on an instrumented attribute. The easiest way to get a :class:`.History` object for a particular attribute on an object is to use the :func:`_sa.inspect` function:: from sqlalchemy import inspect hist = inspect(myobject).attrs.myattribute.history Each tuple member is an iterable sequence: * ``added`` - the collection of items added to the attribute (the first tuple element). * ``unchanged`` - the collection of items that have not changed on the attribute (the second tuple element). * ``deleted`` - the collection of items that have been removed from the attribute (the third tuple element). zUnion[Tuple[()], List[Any]]r� � unchanged�deletedr� r� c C s | t kS r� )rV r� r{ r{ r� �__bool__# s zHistory.__bool__c C s t | jp| jp| j� S )zhReturn True if this :class:`.History` has no changes and no existing, unchanged state. )r� r� r� r� r� r{ r{ r� �empty& s z History.emptyz Sequence[Any]c C s | j pg | jpg | jpg S )z3Return a collection of added + unchanged + deleted.)r� r� r� r� r{ r{ r� �sum. s �z History.sumc C s | j pg | jpg S )z)Return a collection of added + unchanged.)r� r� r� r{ r{ r� � non_deleted5 s zHistory.non_deletedc C s | j pg | jpg S )z+Return a collection of unchanged + deleted.)r� r� r� r{ r{ r� � non_added: s zHistory.non_addedc C s t | jp | j�S )z2Return True if this :class:`.History` has changes.)r� r� r� r� r{ r{ r� � has_changes? s zHistory.has_changesz Iterable[Any])r� r� r� c C s* t t| j�t|� | jt| j�t|� �S r� )r� r� r� r� r� )r� r� r� r{ r{ r� �_mergeD s �zHistory._mergec C s0 t dd� | jD �dd� | jD �dd� | jD ��S )Nc S s g | ]}|d k rt |�pd �qS r� r r� r{ r{ r� r� M s �z$History.as_state.<locals>.<listcomp>c S s g | ]}|d k rt |�pd �qS r� r r� r{ r{ r� r� Q s �c S s g | ]}|d k rt |�pd �qS r� r r� r{ r{ r� r� U s �)r� r� r� r� r� r{ r{ r� �as_stateK s ����zHistory.as_staterK rh r )r r� rW r� c C s� |j �|jt�}|tkr<|tkr,| ddd�S | d|gd�S np|tk rb|�||�dkrb| d|gd�S t|�tkr�d}t|�tkr�d }n|g}|tkr�| dd|�S | |gd|�S d S )Nr{ T)r8 r� rk rb r, r r( �_NO_STATE_SYMBOLS�r� r r� rW r` r� r{ r{ r� rU [ s$ �� z History.from_scalar_attributer_ )r r� rW r` r� c C s� |t kr|j�|jt �}|t krD|tkr4| ddd�S | d|gd�S np||krb|tk rb| d|gd�S t|�tksv|d kr�d}t|�tkr�d }n|g}|tkr�| dd|�S | |gd|�S d S )Nr{ )rb r8 r� rk r, r( r� r� r{ r{ r� ra � s z History.from_object_attributeru c s� |j �|jt�}|tkr$| ddd�S t|d�}|tkrF| t|�dd�S |tkr^| dt|�d�S dd� |D �}dd� |D �}t|�� t|��| �fdd�|D ��fdd�|D �� fdd�|D ��S d S ) Nr{ r� c S s$ g | ] }|d k rt |�pd |f�qS r� r r� r{ r{ r� r� � s �z+History.from_collection.<locals>.<listcomp>c S s$ g | ] }|d k rt |�pd |f�qS r� r r� r{ r{ r� r� � s �c s g | ]\}}|� kr|�qS r{ r{ r� r� r{ r� r� � s c s g | ]\}}|� kr|�qS r{ r{ r� r� r{ r� r� � s c s g | ]\}}|� kr|�qS r{ r{ r� r� r{ r� r� � s )r8 r� rk rb r, r� r� r� )r� r r� rW r` r� r� r{ r� r� r� � s* ���zHistory.from_collectionN)r� r� r� r� r� r� r� r� r� r� r� r� r� � classmethodrU rb ra r� r{ r{ r{ r� r� s& (�&r� r{ r� r7 )r+ rk r� r� c C s t t| �||�S )a Return a :class:`.History` record for the given object and attribute key. This is the **pre-flush** history for a given attribute, which is reset each time the :class:`.Session` flushes changes to the current database transaction. .. note:: Prefer to use the :attr:`.AttributeState.history` and :meth:`.AttributeState.load_history` accessors to retrieve the :class:`.History` for instance attributes. :param obj: an object whose class is instrumented by the attributes package. :param key: string attribute name. :param passive: indicates loading behavior for the attribute if the value is not already present. This is a bitflag attribute, which defaults to the symbol :attr:`.PASSIVE_OFF` indicating all necessary SQL should be emitted. .. seealso:: :attr:`.AttributeState.history` :meth:`.AttributeState.load_history` - retrieve history using loader callables if the value is not locally present. )�get_state_historyr! )r+ rk r� r{ r{ r� r� � s %r� r< c C s | � ||�S r� )r� )r� rk r� r{ r{ r� r� � s r� FrR )r� r+ rk r� r� c C s t | �}t|�}|�|||�S )�TODO)r% r! � has_parent)r� r+ rk r� r� r� r{ r{ r� r� s r� )r� z interfaces.PropComparator[_T]rz zInstrumentedAttribute[_T])rj rk rm rx r� r� r� c K s$ t | ||||d�}t| |f|� |S )N)rm rx r� )�register_descriptor�register_attribute_impl)rj rk rm rx r� r� �descr{ r{ r� �register_attribute s �r� r z Optional[Type[AttributeImpl]]) rj rk r� r � useobject� impl_class�backrefr� r� c K s� t | �}|r*|�dd �} |�|| p$t�} n |�dd �} td|| j�} |rbtd|�| || f|�} nJ|r�t| ||| fd| i|��} n*|r�t| ||| f|�} nt| ||| f|�} | || _ |r�t || ||� |� |� || S )Nr� r z Type[WriteOnlyAttributeImpl]) r% r Zinstrument_collection_classr� r rt ru r_ rK rl r� Zpost_configure_attribute) rj rk r� r r� r� r� r� r� �factoryr� rt rl r{ r{ r� r� s\ � � �� ��� �� r� z Type[Any]rw )rj rk rm rx r� r� c C s. t | �}t| |||d�}||_|�||� |S )N)rm rx )r% r� r� Zinstrument_attribute)rj rk rm rx r� r� r� r{ r{ r� r� L s � r� )rj rk r� c C s t | ��|� d S r� )r% Zuninstrument_attribute)rj rk r{ r{ r� �unregister_attribute` s r� rT )r+ rk r� c C s t | �}|j}t|||�S )a4 Initialize a collection attribute and return the collection adapter. This function is used to provide direct access to collection internals for a previously unloaded attribute. e.g.:: collection_adapter = init_collection(someobject, 'elements') for elem in values: collection_adapter.append_without_event(elem) For an easier way to do the above, see :func:`~sqlalchemy.orm.attributes.set_committed_value`. :param obj: a mapped object :param key: string attribute name where the collection is located. )r! r� �init_state_collection)r+ rk r� r� r{ r{ r� r{ d s r{ rO )r� r� rk r� c C st | j | j}tr t|t�s t�|�|d�}|dk rH|j}|�| ||d� |� | |�}|j | ||t j d�}|� � |S )z�Initialize a collection attribute and return the collection adapter. Discards any existing collection which may be there. NFrA )r� rl r r� rd r� r r� ri r7 ro r7 r0 Z _reset_empty)r� r� rk �attrrS r� rm rf r{ r{ r� r� { s �r� c C s, t | �t| � }}|j| j�|||� dS )a[ Set the value of an attribute with no history events. Cancels any previous history present. The value should be a scalar value for scalar-holding attributes, or an iterable for any collection-holding attribute. This is the same underlying method used when a lazy loader fires off and loads additional data from the database. In particular, this method can be used by application code which has loaded additional attributes or collections through separate queries, which can then be attached to an instance as though it were part of its original loaded state. N)r! r r� rl r; )r� rk r� r� r� r{ r{ r� r; � s r; r )r� rk r� r? r� c C s. t | �t| � }}|j| j�||||� dS )as Set the value of an attribute, firing history events. This function may be used regardless of instrumentation applied directly to the class, i.e. no descriptors are required. Custom attribute management schemes will need to make usage of this method to establish attribute state as understood by SQLAlchemy. :param instance: the object that will be modified :param key: string name of the attribute :param value: value to assign :param initiator: an instance of :class:`.Event` that would have been propagated from a previous event listener. This argument is used when the :func:`.set_attribute` function is being used within an existing event listening function where an :class:`.Event` object is being supplied; the object may be used to track the origin of the chain of events. .. versionadded:: 1.2.3 N)r! r r� rl r� )r� rk r� r? r� r� r{ r{ r� � set_attribute� s r� )r� rk r� c C s& t | �t| � }}|j| j�||�S )aZ Get the value of an attribute, firing any callables required. This function may be used regardless of instrumentation applied directly to the class, i.e. no descriptors are required. Custom attribute management schemes will need to make usage of this method to make usage of attribute state as understood by SQLAlchemy. )r! r r� rl r� �r� rk r� r� r{ r{ r� � get_attribute� s r� c C s* t | �t| � }}|j| j�||� dS )aQ Delete the value of an attribute, firing history events. This function may be used regardless of instrumentation applied directly to the class, i.e. no descriptors are required. Custom attribute management schemes will need to make usage of this method to establish attribute state as understood by SQLAlchemy. N)r! r r� rl r� r� r{ r{ r� � del_attribute� s r� c C sD t | �t| � }}|j| j}|j�||j� |j||tdd� dS )a� Mark an attribute on an instance as 'modified'. This sets the 'modified' flag on the instance and establishes an unconditional change event for the given attribute. The attribute must have a value present, else an :class:`.InvalidRequestError` is raised. To mark an object "dirty" without referring to any specific attribute so that it is considered within a flush, use the :func:`.attributes.flag_dirty` call. .. seealso:: :func:`.attributes.flag_dirty` T�Z is_userlandN) r! r r� rl rt �modifiedr" rQ r, )r� rk r� r� rl r{ r{ r� � flag_modified� s r� r� c C s( t | �t| � }}|j|dtdd� dS )a� Mark an instance as 'dirty' without any specific attribute mentioned. This is a special operation that will allow the object to travel through the flush process for interception by events such as :meth:`.SessionEvents.before_flush`. Note that no SQL will be emitted in the flush process for an object that has no changes, even if marked dirty via this method. However, a :meth:`.SessionEvents.before_flush` handler will be able to see the object in the :attr:`.Session.dirty` collection and may establish changes on it, which will then be included in the SQL emitted. .. versionadded:: 1.2 .. seealso:: :func:`.attributes.flag_modified` NTr� )r! r rQ r, )r� r� r� r{ r{ r� � flag_dirty� s r� )F)FNFNN)N)�r� � __future__r � dataclassesr �typingr r r r r r r r r r r r r r r r � r r r� r Z_typingr rB r r r r r r r r r! r" r# r$ r% r& r' r( r) r* r+ r, r- r. r/ r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r: r; r= r> r? r@ rA �sqlZsql_baserC rD rE rF Z sql.cache_keyrG Z sql.visitorsrH rI Z util.typingrJ rK rL rM rN rO rP rQ rR rS rT rU Z relationshipsrV r� rW rX Z writeonlyrY Z event.baserZ Z sql._typingr[ r\ r] r^ Zsql.annotationr_ Z sql.elementsr` ra Z sql.operatorsrb Zsql.selectablerc rd re r� r1 r� Z_self_inspectsZInspectionAttrZPropComparatorZJoinTargetRoleZ OnClauseRoleZ ImmutableZSlotsMemoizedHasCacheKeyr� ri r� r� � dataclassr� r �symbolrM r� rL r� r! r ZAttributeEvent�Eventry rK r_ rd rt � attrgetterru r� rb � frozensetr( r� r� rV r� r� r� r� r� r� r� r{ r� r; r� r� r� r� r� r{ r{ r{ r� �<module> sl � � g? + 3 g TE u S J �)� �� � 9� �"