hQddlmZmZddlmZddlmZddlmZddl m Z m Z m Z ddl mZmZmZGdde ZGd d e Zd Zd Zd ZdZdZdZdZdZGddZdS))Counter defaultdict)partial)chain) attrgetter)IntegrityError connections transaction) query_utilssignalssqlceZdZfdZxZS)ProtectedErrorcZ||_t||dSN)protected_objectssuper__init__)selfmsgr __class__s U/var/www/html/Sam_Eipo/venv/lib/python3.11/site-packages/django/db/models/deletion.pyrzProtectedError.__init__ s,!2 /00000__name__ __module__ __qualname__r __classcell__rs@rrr s8111111111rrceZdZfdZxZS)RestrictedErrorcZ||_t||dSr)restricted_objectsrr)rrr#rs rrzRestrictedError.__init__s,"4 011111rrrs@rr!r!s8222222222rr!c|||jj|j|jd|jr0t |jjs||d|dSdSdS)NF)source source_attrnullablefail_on_restricted) collect remote_fieldmodelnamenullr featurescan_defer_constraint_checksadd_field_update collectorfieldsub_objsusings rCASCADEr6s !'J  z:+e,5Q:""5$99999::::rc ~td|jjjd|djjd|jd|)Nz'Cannot delete some instances of model 'z@' because they are referenced through a protected foreign key: 'r.')rr*r+rrr,r1s rPROTECTr:"sP .   $ - - - QK ! * * * JJJ      rc||||||jj|jdSr)add_restricted_objectsadd_dependencyr*r+r1s rRESTRICTr>/s< $$UH555 U/5u{CCCCCrcPtrfd}nfd}fd|_|S)NcF|||dSrr0r2r3r4r5values r set_on_deletezSET..set_on_delete7s'  & &ueeggx @ @ @ @ @rc6|||dSrrArBs rrDzSET..set_on_delete<s!  & &ueX > > > > >rcdfifS)Nzdjango.db.models.SET)rCsrzSET..?s)?%2(Nr)callable deconstruct)rCrDs` rSETrK4sh? A A A A A A  ? ? ? ? ?!O N N NM rc4||d|dSrrAr1s rSET_NULLrMCs  udH55555rcX||||dSr)r0 get_defaultr1s r SET_DEFAULTrPGs, ue&7&7&9&98DDDDDrcdSrrGr1s r DO_NOTHINGrRKsDrcBd|dDS)Nc3RK|]"}|j |j|js|j|V#dSr) auto_createdconcrete one_to_one one_to_many).0fs r z4get_candidate_relations_to_delete..Rsd   > #$* 34, CD-        rT)include_hidden) get_fields)optss r!get_candidate_relations_to_deleter_Os1  55   rceZdZddZddZddZdZdZdZd Z d Z dd Z d Z ddZ dZdZdZdZdS) CollectorNcD||_||_tt|_tt tt|_tt tt|_g|_tt|_ dSr) r5originrsetdatar field_updatesr# fast_deletes dependencies)rr5rcs rrzCollector.__init__Zsu  $$ (c)B)BCC"-gk3.G.G"H"H(,,rFc|sgSg}|dj}|j|}|D]}||vr||||||s|||||S)a7 Add 'objs' to the collection of objects to be deleted. If the call is the result of a cascade, 'source' should be the model that caused it, and 'nullable' should be set to True if the relation can be null. Return a list of all objects that were not already collected. rNreverse_dependency)rreappendupdater=) robjsr%r'rknew_objsr+ instancesobjs raddz Collector.addos IQ!Ie$  % %C)##$$$"""  h    BT  U U Urc|r||}}|j|jj|jj|j||jdSr)rh_metaconcrete_modelrrre setdefaultdefault_factory)rr+ dependencyrks rr=zCollector.add_dependencyso  2 *E:E %+4599   +    Z)B)B)D)DEEEEErcx|sdS|dj}|j|||f|dS)z Schedule a field update. 'objs' must be a homogeneous iterable collection of model instances (e.g. a QuerySet). Nr)rrfrm)rr3rCrnr+s rr0zCollector.add_field_updatesH   FQ! 5!%,/66t<<<< > > > > ? ?rc||jvr5fd|j|D|j|<dSdS)Nc"i|] \}}||z  SrGrG)rYr3itemsrns r z?Collector.clear_restricted_objects_from_set..s3... E5ut|...r)r#r})rr+rns `r!clear_restricted_objects_from_setz+Collector.clear_restricted_objects_from_setsc D+ + +....$($;E$B$H$H$J$J...D #E * * * , +rc||jvrbt|d|j|D}|||dSdS)Nc&g|]}|D] }|j SrGpk)rYrnrqs r zDCollector.clear_restricted_objects_from_queryset..sA #' r)pk__in)r#rdfiltervaluesr)rr+qsrns r&clear_restricted_objects_from_querysetz0Collector.clear_restricted_objects_from_querysets D+ + + $($;E$B$I$I$K$KD  2 25$ ? ? ? ? ? , +rc~tj|ptj|Sr)r pre_delete has_listeners post_delete)rr+s r_has_signal_listenerszCollector._has_signal_listenerss9!//   6  . .u 5 5 6rcrjjturdSt|dr |jj}n*t|drt|dr|j}ndS||rdS|j}tfd|jjj DoDtdt|Dotd|j D S)a Determine if the objects in the given queryset-like or single object can be fast-deleted. This can be done if there are no cascades, no parents and no signal listeners for the object class. The 'from_field' tells where we are coming from - we need this to determine if the objects are in fact to be deleted. Allow also skipping parent -> child -> parent chain preventing fast delete of the child. Frtr+ _raw_deletec3$K|] }|kV dSrrG)rYlink from_fields rr[z,Collector.can_fast_delete..s< "rc3FK|]}|jjjtuVdSr)r3r* on_deleterR)rYrelateds rr[z,Collector.can_fast_delete..sC *4 Brc36K|]}t|dVdS)bulk_related_objectsN)hasattrrYr3s rr[z,Collector.can_fast_delete..sAE#9::r)r*rr6rrtr+rallruparentsrr_anyprivate_fields)rrnrr+r^s ` rcan_fast_deletezCollector.can_fast_deletesR  *1;7JJ5 4 ! ! J$EE T7 # # m(D(D JEE5  % %e , , 5{  /5=DDFF    @FF    !%!4 rcd|D}tt|jj|dt kr+fdt dt DSgS)zT Return the objs in suitably sized batches for the used connection. cg|] }|j SrGr,rs rrz-Collector.get_del_batches..s666euz666rc*g|]}||zSrGrG)rYiconn_batch_sizerns rrz-Collector.get_del_batches..s8Q_,,-rr)maxr r5opsbulk_batch_sizelenrange)rrnfields field_namesrs ` @rget_del_batcheszCollector.get_del_batchess76v666   # ' 7 7 T J JA   t99 & &q#d))_==  6MrTc  ||r|j|dS|||||} | sdS| dj} |sb| jj} | jjD]7r3fd| D} | | | j j ddd8|sdS|r&t| j } tt}tt}t!| jD]y}|r |j| vr|j}|j jt(kr,|j}|||r|||f|| |g}|D]}|||g|}|jjsi||sTtt7jd t!|jD}|jt=|}|rh |j ||||j#t@$r7}d |jj!d |j"d }||xx|j#z cc<Yd}~d}~wwxYw{|r`tAd | j!d d$|d tt7j||%D]Q\}}|| |}|D]3}||||}|j|4R| jj&D]F}tO|dr4|(| |j}| || ddG|rG|j)%D]\}}|*|||jD]}|+|j||j,rtt}|j,%D]D\}}|%D]*\}}|r#d |j!d |j"d }||xx|z cc<+E|rdt[d | j!dd$|d tt7j|dSdSdS)a Add 'objs' to the collection of objects to be deleted as well as all parent instances. 'objs' must be a homogeneous iterable collection of model instances (e.g. a QuerySet). If 'collect_related' is True, related objects will be handled by their respective on_delete handler. If the call is the result of a cascade, 'source' should be the model that caused it and 'nullable' should be set to True, if the relation can be null. If 'reverse_dependency' is True, 'source' will be deleted before the current model, rather than after. (Needed for cascading to parent models, the one case in which the cascade follows the forwards direction of an FK rather than the reverse direction.) If 'keep_parents' is True, data of parent model's will be not deleted. If 'fail_on_restricted' is False, error won't be raised even if it's prohibited to delete such objects due to RESTRICT, that defers restricted object checking in recursive calls where the top-level call may need to collect more objects to determine whether restricted ones can be deleted. 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