ϓh;FdZddlZddlZddlZddlmZddlmZddlm Z m Z m Z ddl m Z ddlmZejdZed d Zd ZGd d ejZGddZGddZGddZddZdZdZGddZdS)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 [/var/www/surfInsights/venv3-11/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__0sQ 5t5fV\\^^445       rcPt|dddurt||s|S|s)t|tr|S||}|||||||S)N conditionalF)r)getattr TypeErrorcopy isinstancercreateadd)r$otherconnobjs r_combinez Q._combine7s 5- / /5 8 8E"" " ::<<  E1-- 99;; kkDk)) d t rc8|||jSr )r3rr$r0s r__or__zQ.__or__Ds}}UDG,,,rc8|||jSr )r3rr5s r__and__z Q.__and__G}}UDH---rc8|||jSr )r3rr5s r__xor__z Q.__xor__Jr9rcV|}||Sr )r,negate)r$r2s r __invert__z Q.__invert__Ms!iikk  rcl||||dd|\}}|||S)NF) allow_joins split_subqcheck_filterable summarize)_add_q promote_joins)r$queryr@reuserCfor_saveclausejoinss rresolve_expressionzQ.resolve_expressionRsM   #" %   E""" rc#K|V|jD]N}t|tr|d}t|dr|Ed{VJ|VOdS)zg Recursively yield this Q object and all subexpressions, in depth-first order. flattenN)rr-tuplehasattrrN)r$childs rrNz Q.flattenbs  ]  E%'' !aui((  ==??********   rc ddlm}m}ddlm}ddlm}ddlm}|d}| D]8\} } t| ds || } | | | d 9| |d d t|j jr7|t!||d | n||||} | |duS#t&$r'} t(d|| Yd} ~ d Sd} ~ wwxYw)z| Do a database query to check if the expressions of the Q instance matches against the expressions. r) BooleanFieldValue)Coalesce)Query)SINGLENrKF)selectrM_checkT) output_field)usingz.Got a database error calling check() on %r: %s)django.db.modelsrSrTdjango.db.models.functionsrUdjango.db.models.sqlrVdjango.db.models.sql.constantsrWr#rPadd_annotationrfeaturessupports_comparing_boolean_expradd_qr get_compiler execute_sqlrloggerwarning) r$againstr[rSrTrUrVrWrFnamevaluecompileres rcheckzQ.checkqs 98888888777777......999999d "==?? < @RSSDT]## >T\ ) )#'>F< < &!%F: T6!!r)NTNFF)rqrp __qualname____doc__rrrrtr)r!r3r6r8r;r>rKrNrrmrv __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. N)fields)__dict__r}attname_check_parent_chainrefresh_from_db)r$instancerdata field_namevals r__get__zDeferredAttribute.__get__sw  K Z' T ! !**844C{(( (====#&Z Jrc|j}||jj}|jjr |j|krt ||jSdS)z Check if the field value can be fetched from a parent field already loaded in the instance. This can be done if the to-be fetched field is a primary key field. 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"C )/+& ''))) rcL||j}d|jvri|_||j|<|Sr)rrrr$rrs rregister_instance_lookupz,RegisterLookupMixin.register_instance_lookups7   ,K T] 2 2$&D !-3k* rcP||j}|j|=|dS)zn Remove given lookup from cls lookups. For use in tests only as it's not thread-safe. N)rrrrs r_unregister_class_lookupz,RegisterLookupMixin._unregister_class_lookup"s5   ,K  k * '')))))rc(||j}|j|=dS)zs Remove given lookup from instance lookups. For use in tests only as it's not thread-safe. N)rrrs r_unregister_instance_lookupz/RegisterLookupMixin._unregister_instance_lookup,s#   ,K  !+ . . .rr )rqrprwrr lru_cacherrrr classmethodrr staticmethodrrrrregister_lookuprr_unregister_lookuprrrrrs999Y&&&..'&.  +*+<>RSSK# $566\55[5/.7O(K(=>>****////21 "= +{+CDDrrFc|jsdS|jjr|sdS|r'|r||vrdS|s |j|vrdS|s |jrdS|r9|r7|j|vr.||vr*t d|jjjd|jddS)af Return True if this field should be used to descend deeper for select_related() purposes. 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