hH54dZddlZddlZddlZddlZddlmZddlmZddl m Z m Z m Z ddl mZddlmZejdZed d Zd ZGd d ejZGddZGddZddZdZdZGddZdS)z Various data structures used in query construction. Factored out from django.db.models.query to avoid making the main module very large and/or so that they can be used by other modules without getting into circular import difficulties. N) namedtuple) FieldError)DEFAULT_DB_ALIAS DatabaseError connections) LOOKUP_SEP)treedjango.db.modelsPathInfozGfrom_opts to_opts target_fields join_field m2m direct filtered_relationc#jK|V|D]}t|Ed{VdSN)__subclasses__ subclassesclssubclasss X/var/www/html/Sam_Eipo/venv/lib/python3.11/site-packages/django/db/models/query_utils.pyrrsW III&&((((h''''''''''((c|eZdZdZdZdZdZeZdZdddfd Z d Z d Z d Z d Z dZ ddZdZefdZdZxZS)Qze Encapsulate filters as objects that can then be combined logically (using `&` and `|`). ANDORXORTNF) _connector_negatedctg|t|||dS)N)children connectornegated)super__init__sorteditems)selfrrargskwargs __class__s rr!z Q.__init__1sQ 5t5fV\\^^445       rct|ts"t|dddust||s8t |dr|nt j|St|tr/|s-|\}}}t||i|St|}||_| ||| |||S)N conditionalFTcopy) isinstancergetattr TypeErrorhasattrr* deconstructtyperadd)r$otherconn_r%r&objs r_combinez Q._combine8s5!$$ #}e(L(LPT(T(TE"" " /#*5 #9O5::<<@RSSDT]## >T\ ) )#'>F< < &!%F: T6!!r)NTNFF)rsrr __qualname____doc__rrrrvr)r!r6r9r;r>rArNrQrror/ __classcell__)r's@rrr$s  C B CGK)-        ---......SX       $4: " " " " " " "rrc&eZdZdZdZddZdZdS)DeferredAttributez A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed. c||_dSr )field)r$r~s rr!zDeferredAttribute.__init__s  rNc||S|j}|jj}||vr4||}|||gn|||<||S)zx Retrieve and caches the value from the datastore on the first lookup. Return the cached value. 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N)rrrrs r_unregister_lookupz&RegisterLookupMixin._unregister_lookups5   ,K  k * !!#####rr )rsrrrx classmethodr functools lru_cacherrr staticmethodrrrrrrrrrs88[8Y&&&..'&[. \//[/[$$$[$$$rrFc$|jsdS|jjr|sdS|r'|r||vrdS|s |j|vrdS|s |jrdS|r@|j|vr7|r5|j|vr,d|jjjd|jd}t|dS)ap Return True if this field should be used to descend deeper for select_related() purposes. Used by both the query construction code (compiler.get_related_selections()) and the model instance creation code (compiler.klass_info). Arguments: * field - the field to be checked * restricted - a boolean field, indicating if the field list has been manually restricted using a requested clause) * requested - The select_related() dictionary. * load_fields - the set of fields to be loaded on this model * reverse - boolean, True if we are checking a reverse select related FzField rqzM cannot be both deferred and traversed using select_related at the same time.T) remote_field parent_linkrelated_query_namerknullrrr object_namer)r~ restricted requested load_fieldsreversemsgs rselect_related_descendrs  u %gu  u//11BB5 5:Y665 %*u& = + + &ejI555[&222EJJJ@!oo% 4rctdt|dzD]>}tj|d|}||vr||r||||dfcS?dS)z Check if the lookup_parts contains references to the given annotations set. Because the LOOKUP_SEP is contained in the default annotation names, check each prefix of the lookup_parts for a match. rPrN)Fr)rangelenrjoin) lookup_parts annotationsnlevel_n_lookups rrefs_expressionr4s~ 1c,''!+ , ,AA#ac):;; [ ( ([-H (~. 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