File: //usr/lib/python3/dist-packages/django/core/serializers/__pycache__/base.cpython-310.pyc
o
3�a�- � @ s� d Z ddlmZ ddlmZ ddlmZ e� ZG dd� de �Z
G dd� de �Z G d d
� d
e �Z
G d d � d e �ZG d
d� d�ZG dd� d�ZG dd� d�ZG dd� d�Zdd� Zdd� Zdd� ZdS ) z;
Module for abstract serializer/unserializer base classes.
� )�StringIO)�ObjectDoesNotExist)�modelsc @ � e Zd ZdZdS )�SerializerDoesNotExistz'The requested serializer was not found.N��__name__�
__module__� __qualname__�__doc__� r r �>/usr/lib/python3/dist-packages/django/core/serializers/base.pyr � r c @ r )�SerializationErrorz,Something bad happened during serialization.Nr r r r r
r r r c @ s e Zd ZdZedd� �ZdS )�DeserializationErrorz.Something bad happened during deserialization.c C s | d||||f �S )zs
Factory method for creating a deserialization error which has a more
explanatory message.
z#%s: (%s:pk=%s) field_value was '%s'r )�cls� original_exc�model�fk� field_valuer r r
�WithData s z DeserializationError.WithDataN)r r r
r � classmethodr r r r r
r s r c @ s e Zd ZdZdd� ZdS )�M2MDeserializationErrorzCSomething bad happened during deserialization of a ManyToManyField.c C s || _ || _d S �N)r �pk)�selfr r r r r
�__init__$ s
z M2MDeserializationError.__init__N)r r r
r r r r r r
r " s r c @ s e Zd ZdZdd� Zdd� ZdS )� ProgressBar�K c C s || _ || _d| _d S )Nr )�output� total_count� prev_done)r r r r r r
r , �
zProgressBar.__init__c C s� | j sd S |d | j }|| j d }| j|krd S || _| jdkr$dnd}| j �|d d| d| j| d � || jkrF| j �d � | j �� d S )
N�d � � �
�[�.� �]�
)r r �progress_widthr! �write�flush)r �count�perc�done�crr r r
�update1 s
*
zProgressBar.updateN)r r r
r, r r3 r r r r
r ) s r c @ st e Zd ZdZdZeZeZddddddd�dd�Z dd � Z
d
d � Z d d
� Z dd� Z
dd� Zdd� Zdd� Zdd� ZdS )�
Serializerz)
Abstract serializer base class.
FNr )�stream�fields�use_natural_foreign_keys�use_natural_primary_keys�progress_output� object_countc K st || _ |dur |n| �� | _|| _|| _|| _| �||�} | �� d| _t |dd�D ]�\}
} | �
| � | j j } | jrJ| j j
}
|
jrG|
jjrG|
nd}nd}| j jD ]5}|jsY||u r�|jdu rp| jdu si|j| jv ro| �| |� qP| jdu s|jdd� | jv r�| �| |� qP| j jD ]}|jr�| jdu s�|j| jv r�| �| |� q�| �| � | �|
� | jo�d| _q*| �� | �� S )z'
Serialize a queryset.
NTr$ )�start���F)�options� stream_classr5 �selected_fieldsr7 r8 �progress_class�start_serialization�first� enumerate� start_object�_meta�concrete_modelr � remote_field� parent_link� local_fields� serialize�attname� handle_field�handle_fk_field�local_many_to_many�handle_m2m_field�
end_objectr3 �end_serialization�getvalue)r �querysetr5 r6 r7 r8 r9 r: r= � progress_barr/ �objrF r � pk_parent�fieldr r r
rJ K sD
� � �
zSerializer.serializec C � t d��)zA
Called when serializing of the queryset starts.
zDsubclasses of Serializer must provide a start_serialization() method��NotImplementedError�r r r r
rA y � z Serializer.start_serializationc C � dS )z?
Called when serializing of the queryset ends.
Nr r[ r r r
rQ � z Serializer.end_serializationc C rX )z>
Called when serializing of an object starts.
z=subclasses of Serializer must provide a start_object() methodrY �r rU r r r
rD � r\ zSerializer.start_objectc C r] )z<
Called when serializing of an object ends.
Nr r_ r r r
rP � r^ zSerializer.end_objectc C rX )zW
Called to handle each individual (non-relational) field on an object.
z=subclasses of Serializer must provide a handle_field() methodrY �r rU rW r r r
rL � r\ zSerializer.handle_fieldc C rX )z6
Called to handle a ForeignKey field.
z@subclasses of Serializer must provide a handle_fk_field() methodrY r` r r r
rM � r\ zSerializer.handle_fk_fieldc C rX )z5
Called to handle a ManyToManyField.
zAsubclasses of Serializer must provide a handle_m2m_field() methodrY r` r r r
rO � r\ zSerializer.handle_m2m_fieldc C s t t| jdd��r| j�� S dS )zn
Return the fully serialized queryset (or None if the output stream is
not seekable).
rR N)�callable�getattrr5 rR r[ r r r
rR � s
�zSerializer.getvalue)r r r
r �internal_use_onlyr r@ r r> rJ rA rQ rD rP rL rM rO rR r r r r
r4 @ s �. r4 c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � Deserializerz+
Abstract base deserializer class.
c K s( || _ t|t�rt|�| _dS || _dS )zA
Init this serializer given a stream or a string
N)r= �
isinstance�strr r5 )r �stream_or_stringr= r r r
r � s
zDeserializer.__init__c C s | S r r r[ r r r
�__iter__� s zDeserializer.__iter__c C rX )z9Iteration interface -- return the next item in the streamz;subclasses of Deserializer must provide a __next__() methodrY r[ r r r
�__next__� s zDeserializer.__next__N)r r r
r r rh ri r r r r
rd � s
rd c @ s6 e Zd ZdZd dd�Zdd� Zd
dd �Zdd
d �ZdS )�DeserializedObjectae
A deserialized model.
Basically a container for holding the pre-saved deserialized data along
with the many-to-many data saved with the object.
Call ``save()`` to save the object (with the many-to-many data) to the
database; call ``save(save_m2m=False)`` to save just the object fields
(and not touch the many-to-many stuff.)
Nc C s || _ || _|| _d S r )�object�m2m_data�deferred_fields)r rU rl rm r r r
r � r" zDeserializedObject.__init__c C s d| j j| jjj| jjf S )Nz<%s: %s(pk=%s)>)� __class__r rk rE �labelr r[ r r r
�__repr__� s
�zDeserializedObject.__repr__Tc K sV t jj| jf|dd�|�� | jr&|r&| j�� D ]
\}}t| j|��|� qd | _d S )NT)�using�raw)r �Model� save_baserk rl �itemsrb �set)r �save_m2mrq �kwargs�
accessor_name� object_listr r r
�save� s
zDeserializedObject.savec C s i | _ | j�� D ]q\}}| jj}|jd |j }t|jt j
�rIz
t |||dd�}W n t yA } z t
�|j|| jj|j��d }~ww || j |j< qt|jt j�ryz
t|||dd�}W n typ } z
t
�||| jj|��d }~ww t| j|j|� q| �� d S )Nr( F)�handle_forward_references)rl rm ru rk rE � app_label�
model_namere rG r �
ManyToManyRel�deserialize_m2m_valuesr r r r r �name� ManyToOneRel�deserialize_fk_value� Exception�setattrrK r{ ) r rq rW r �optsro �values�e�valuer r r
�save_deferred_fields� s, ����� z'DeserializedObject.save_deferred_fields)NN)TNr )r r r
r r rp r{ r� r r r r
rj � s
rj c C s� | j j}|�| j jj�}|du rCt|d�rCt| d�rC| di |���� }z| j j�|�|�j |� j�|| j jj< W n
| j
yB Y nw | di |��S )z�
Build a model instance.
If the model instance doesn't have a primary key and the model supports
natural keys, try to retrieve it from the database.
N�get_by_natural_key� natural_keyr ) rE �default_manager�getr rK �hasattrr� � to_python�
db_managerr� � DoesNotExist)rs �data�dbr� r r� r r r
�build_instance� s ���r� c
s� | j j� t� jd�r� �fdd�}n� fdd�}zt|�}W n ty/ } zt||��d }~ww zg }|D ] }|�||�� q5|W S tya } zt |t
�rX|rXt W Y d }~S t||��d }~ww )Nr� c s6 t | d�rt| t�s� j���j| � jS � jj�| �S )Nrh ) r� re rf �_default_managerr� r� r rE r� )r� �r rq r r
� m2m_convert s z+deserialize_m2m_values.<locals>.m2m_convertc s � j j�| �S r )rE r r� )�v)r r r
r� s ) rG r r� r� �iter� TypeErrorr �appendr� re r � DEFER_FIELD) rW r rq r| r� �pks_iterr� r� r r r� r
r� s*
��
��r� c C s� |d u rd S | j j}|j}| j j}t|d�rHt|d�rHt|t�sHz
|�|�j|� }W n t y8 |r7t
Y S � w t ||�}|j j
j rF|j
}|S |j �|��|�S )Nr� rh )rG r r� �
field_namer� re rf r� r� r r� rb rE r � get_fieldr� ) rW r rq r| r r� r� rU r� r r r
r� - s,
�� �
r� N)r �ior �django.core.exceptionsr � django.dbr rk r� �KeyErrorr r� r r r r r4 rd rj r� r� r� r r r r
�<module> s l9