o h3@sdZddlZddlZddlmZddlmZddlmZddl m Z e Z GdddZ Gd d d eZGd d d eZGd ddeZGdddeZGdddZGdddZGdddZGdddZddZddZddZdS)z; Module for abstract serializer/unserializer base classes. N)StringIO)ObjectDoesNotExist)models)RemovedInDjango50Warningc@s*eZdZdZd ddZddZddZdS) PickleSerializerzd Simple wrapper around pickle to be used in signing.dumps()/loads() and cache backends. NcCs*tdt|durtj|_dS||_dS)NzTPickleSerializer is deprecated due to its security risk. Use JSONSerializer instead.)warningswarnrpickleHIGHEST_PROTOCOLprotocol)selfr r N/var/www/html/env/lib/python3.10/site-packages/django/core/serializers/base.py__init__s zPickleSerializer.__init__cCst||jSN)r dumpsr r objr r rrzPickleSerializer.dumpscCs t|Sr)r loads)r datar r rr s zPickleSerializer.loadsr)__name__ __module__ __qualname____doc__rrrr r r rrs   rc@eZdZdZdS)SerializerDoesNotExistz'The requested serializer was not found.Nrrrrr r r rr$rc@r)SerializationErrorz,Something bad happened during serialization.Nrr r r rr*rrc@seZdZdZeddZdS)DeserializationErrorz.Something bad happened during deserialization.cCs|d||||fS)zs Factory method for creating a deserialization error which has a more explanatory message. z#%s: (%s:pk=%s) field_value was '%s'r )cls original_excmodelfk field_valuer r rWithData3s  zDeserializationError.WithDataN)rrrr classmethodr&r r r rr 0sr c@seZdZdZddZdS)M2MDeserializationErrorzCSomething bad happened during deserialization of a ManyToManyField.cCs||_||_dSr)r"pk)r r"r)r r rrBs z M2MDeserializationError.__init__N)rrrrrr r r rr(?s r(c@s eZdZdZddZddZdS) ProgressBarKcCs||_||_d|_dS)Nr)output total_count prev_done)r r,r-r r rrJ zProgressBar.__init__cCs|jsdS|d|j}||jd}|j|krdS||_|jdkr$dnd}|j|dd|d|j|d||jkrF|jd |jdS) Nd [. ] )r,r-progress_widthr.writeflush)r countpercdonecrr r rupdateOs    zProgressBar.updateN)rrrr9rr@r r r rr*Gs r*c@steZdZdZdZeZeZdddddddddZ dd Z d d Z d d Z ddZ ddZddZddZddZdS) Serializerz) Abstract serializer base class. FNr)streamfieldsuse_natural_foreign_keysuse_natural_primary_keysprogress_output object_countcKst||_|dur |n||_||_||_||_|||} |d|_t |ddD]\} } | | | j j } |jrJ| j j } | jrG| jjrG| nd}nd}| j jD]5}|jsY||ur|jdurp|jdusi|j|jvro|| |qP|jdus|jdd|jvr|| |qP| j jD]}|jr|jdus|j|jvr|| |q|| | | |jod|_q*||S)z' Serialize a queryset. NTr1)startF)options stream_classrBselected_fieldsrDrEprogress_classstart_serializationfirst enumerate start_object_metaconcrete_modelr) remote_field parent_link local_fields serializeattname handle_fieldhandle_fk_fieldlocal_many_to_manyhandle_m2m_field end_objectr@end_serializationgetvalue)r querysetrBrCrDrErFrGrJ progress_barr<rrSr) pk_parentfieldr r rrWksL               zSerializer.serializecCtd)zA Called when serializing of the queryset starts. zDsubclasses of Serializer must provide a start_serialization() methodNotImplementedErrorr r r rrNzSerializer.start_serializationcCdS)z? Called when serializing of the queryset ends. Nr rgr r rr^zSerializer.end_serializationcCrd)z> Called when serializing of an object starts. z=subclasses of Serializer must provide a start_object() methodrerr r rrQrhzSerializer.start_objectcCri)z< Called when serializing of an object ends. Nr rr r rr]rjzSerializer.end_objectcCrd)zW Called to handle each individual (non-relational) field on an object. z=subclasses of Serializer must provide a handle_field() methodrer rrcr r rrYrhzSerializer.handle_fieldcCrd)z6 Called to handle a ForeignKey field. z@subclasses of Serializer must provide a handle_fk_field() methodrerkr r rrZrhzSerializer.handle_fk_fieldcCrd)z5 Called to handle a ManyToManyField. zAsubclasses of Serializer must provide a handle_m2m_field() methodrerkr r rr\rhzSerializer.handle_m2m_fieldcCs tt|jddr|jSdS)zn Return the fully serialized queryset (or None if the output stream is not seekable). r_N)callablegetattrrBr_rgr r rr_s zSerializer.getvalue)rrrrinternal_use_onlyr*rMrrKrWrNr^rQr]rYrZr\r_r r r rrA`s( C rAc@s(eZdZdZddZddZddZdS) Deserializerz+ Abstract base deserializer class. cKs(||_t|trt||_dS||_dS)zA Init this serializer given a stream or a string N)rJ isinstancestrrrB)r stream_or_stringrJr r rrs  zDeserializer.__init__cCs|Srr rgr r r__iter__szDeserializer.__iter__cCrd)z9Iteration interface -- return the next item in the streamz;subclasses of Deserializer must provide a __next__() methodrergr r r__next__szDeserializer.__next__N)rrrrrrsrtr r r rros  roc@s6eZdZdZd ddZddZd 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.) NcCs||_||_||_dSr)objectm2m_datadeferred_fields)r rrwrxr r rrr/zDeserializedObject.__init__cCsd|jj|jjj|jjfS)Nz<%s: %s(pk=%s)>) __class__rrvrRlabelr)rgr r r__repr__s zDeserializedObject.__repr__TcKsVtjj|jf|dd||jr&|r&|jD] \}}t|j||qd|_dS)NT)usingraw)rModel save_baservrwitemsrmset)r save_m2mr|kwargs accessor_name object_listr r rsaves   zDeserializedObject.savec Csi|_|jD]q\}}|jj}|jd|j}t|jt j rIz t |||dd}Wnt yA}z t |j||jj|jd}~ww||j|j<qt|jt jryz t|||dd}Wntyp}z t |||jj|d}~wwt|j|j|q|dS)Nr5F)handle_forward_references)rwrxrrvrR app_label model_namerprTr ManyToManyReldeserialize_m2m_valuesr(r r&r"r)name ManyToOneReldeserialize_fk_value ExceptionsetattrrXr) r r|rcr%optsrzvaluesevaluer r rsave_deferred_fields)s<    z'DeserializedObject.save_deferred_fields)NN)TNr)rrrrrr{rrr r r rrus    rucCs|jj}||jjj}|durIt|drIt|drI|di|}||j_|}z|jj | |j |j||jjj<Wn |j yHYnw|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. Nget_by_natural_key natural_keyr ) rRdefault_managergetr)rXhasattr_statedbr to_python db_managerr DoesNotExist)r~rrrr)rrr r rbuild_instanceEs$rc s|jjtjdrfdd}nfdd}zt|}Wnty/}zt||d}~wwzg}|D] }|||q5|WStya}zt |t rX|rXt WYd}~St||d}~ww)Nrcs6t|drt|tsjj|jSjj|S)Nrs) rrprq_default_managerrrr)rRr)rr#r|r r m2m_convertcs z+deserialize_m2m_values..m2m_convertcsjj|Sr)rRr)r)v)r#r rror) rTr#rriter TypeErrorr(appendrrpr DEFER_FIELD) rcr%r|rrpks_iterrrr)r rrr_s*     rc Cs|durdS|jj}|j}|jj}t|drHt|drHt|tsHz ||j|}Wnt y8|r7t YSwt ||}|j j jrF|j }|S|j ||S)Nrrs)rTr#r field_namerrprqrrrrrmrRr) get_fieldr) rcr%r|rr#rrrrr r rrs.   r)rr riordjango.core.exceptionsr django.dbrdjango.utils.deprecationrrvrrKeyErrorrrrr r(r*rArorurrrr r r rs*     A #