B 0H[4@sdZddlmZddlmZGdddeZGdddeZGdd d eZ Gd d d Z Gd d d Z GdddZ GdddZ ddZdS)z; Module for abstract serializer/unserializer base classes. )StringIO)modelsc@seZdZdZdS)SerializerDoesNotExistz'The requested serializer was not found.N)__name__ __module__ __qualname____doc__r r `C:\Users\HIRONO~1\AppData\Local\Temp\pip-install-6bm3nxem\django\django\core\serializers\base.pyr src@seZdZdZdS)SerializationErrorz,Something bad happened during serialization.N)rrrrr r r r r sr c@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 )clsZ original_excmodelZfkZ field_valuer r r WithDataszDeserializationError.WithDataN)rrrr classmethodrr r r r r sr c@s eZdZdZddZddZdS) ProgressBarKcCs||_||_d|_dS)Nr)output total_count prev_done)selfrrr r r __init__"szProgressBar.__init__cCs|js dS|d|j}||jd}|j|kr4dS||_|jdkrHdnd}|j|dd|d|j|d||jkr|jd |jdS) Nd [. ] )rrprogress_widthrwriteflush)rcountpercdoneZcrr r r update's *  zProgressBar.updateN)rrrr!rr'r r r r rsrc@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_countcKsP||_|dk r|n||_||_||_||_|||} |d|_xt |ddD]\} } | | | j j } xn| j j D]b} | jrz| jdkr|jdks| j|jkr|| | qz|jdks| jdd|jkrz|| | qzWx:| j jD].} | jr|jdks | j|jkr|| | qW|| | | |jrVd|_qVW||S)z' Serialize a queryset. NTr)startF)options stream_classr)Zselected_fieldsr+r,progress_classstart_serializationfirst enumerate start_object_metaconcrete_modelZ local_fields serializeZ remote_fieldZattname handle_fieldhandle_fk_fieldZ many_to_manyhandle_m2m_field end_objectr'end_serializationgetvalue)rZquerysetr)r*r+r,r-r.r1 progress_barr$objr9fieldr r r r:As8      zSerializer.serializecCs tddS)zA Called when serializing of the queryset starts. zDsubclasses of Serializer must provide a start_serialization() methodN)NotImplementedError)rr r r r4hszSerializer.start_serializationcCsdS)z? Called when serializing of the queryset ends. Nr )rr r r r?nszSerializer.end_serializationcCs tddS)z> Called when serializing of an object starts. z=subclasses of Serializer must provide a start_object() methodN)rD)rrBr r r r7tszSerializer.start_objectcCsdS)z< Called when serializing of an object ends. Nr )rrBr r r r>zszSerializer.end_objectcCs tddS)zW Called to handle each individual (non-relational) field on an object. z>subclasses of Serializer must provide an handle_field() methodN)rD)rrBrCr r r r;szSerializer.handle_fieldcCs tddS)z6 Called to handle a ForeignKey field. zAsubclasses of Serializer must provide an handle_fk_field() methodN)rD)rrBrCr r r r<szSerializer.handle_fk_fieldcCs tddS)z5 Called to handle a ManyToManyField. zBsubclasses of Serializer must provide an handle_m2m_field() methodN)rD)rrBrCr r r r=szSerializer.handle_m2m_fieldcCs tt|jddr|jSdS)zn Return the fully serialized queryset (or None if the output stream is not seekable). r@N)callablegetattrr)r@)rr r r r@szSerializer.getvalue)rrrrZinternal_use_onlyrr3rr2r:r4r?r7r>r;r<r=r@r r r r r(6s&r(c@s(eZdZdZddZddZddZdS) Deserializerz+ Abstract base deserializer class. cKs&||_t|trt||_n||_dS)zA Init this serializer given a stream or a string N)r1 isinstancestrrr))rZstream_or_stringr1r r r rs  zDeserializer.__init__cCs|S)Nr )rr r r __iter__szDeserializer.__iter__cCs tddS)z8Iteration iterface -- return the next item in the streamz;subclasses of Deserializer must provide a __next__() methodN)rD)rr r r __next__szDeserializer.__next__N)rrrrrrJrKr r r r rGs rGc@s,eZdZdZd ddZddZd dd 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||_||_dS)N)objectm2m_data)rrBrNr r r rszDeserializedObject.__init__cCsd|jj|jjj|jjfS)Nz<%s: %s(pk=%s)>) __class__rrMr8labelpk)rr r r __repr__szDeserializedObject.__repr__TcKsZtjj|jf|dd||jrP|rPx(|jD]\}}t|j||q2Wd|_dS)NT)usingraw)rModelZ save_baserMrNitemsrFset)rZsave_m2mrSkwargsZ accessor_name object_listr r r saves  zDeserializedObject.save)N)TN)rrrrrrRrZr r r r rLs  rLcCsh|f|}|jdkrdt|drdt|jdrd|}y|j|j|j|_Wn|jk rbYnX|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 natural_keyget_by_natural_key)rQhasattrZ_default_managerr[Z db_managerr\Z DoesNotExist)rUdatadbrBr[r r r build_instances  r`N)riorZ django.dbrKeyErrorr Exceptionr r rr(rGrLr`r r r r s   e%