P}bg,-dZddlZddlZddlZddlmZddlmZddlm Z ddl m Z eddZ d Z Gd d e jZGd d ZGddZddZdZdZGddZdS)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) LOOKUP_SEP)treePathInfozGfrom_opts to_opts target_fields join_field m2m direct filtered_relationc#jK|V|D]}t|Ed{VdSN)__subclasses__ subclassesclssubclasss o/home/e360mart.nyusoft.in/public_html/e360mart_env/lib/python3.11/site-packages/django/db/models/query_utils.pyr r sW III&&((((h''''''''''((c`eZdZdZdZdZeZdZdddfd Zd Z d Z d Z d Z dd Z dZxZS)Qze Encapsulate filters as objects that can then be combined logically (using `&` and `|`). ANDORTNF) _connector_negatedctg|t|||dS)N)children connectornegated)super__init__sorteditems)selfrrargskwargs __class__s rrz Q.__init__(sD "BD"B6&,,..+A+A"Bjbjkkkkkrct|ts"t|dddust||s8t |dr|nt j|St|tr/|s-|\}}}t||i|St|}||_| ||| |||S)N conditionalFTcopy) isinstancergetattr TypeErrorhasattrr% deconstructtyperadd)rotherconn_r r!objs r_combinez Q._combine+s%## #wumU'K'Kt'S'SE"" " /#*5 #9O5::<<s}}UDH---rct|}|||j||Sr )r+r,rnegate)rr0s r __invert__z Q.__invert__As;d4jjll dh  rcj||||dd\}}|||S)NF) allow_joins split_subqcheck_filterable)_add_q promote_joins)rqueryr;reuse summarizefor_saveclausejoinss rresolve_expressionzQ.resolve_expressionGsG %[U"%   E""" rc|jjd|jj}|dr|dd}t |j}i}|j|jkr |j|d<|j rd|d<|||fS)N.zdjango.db.models.query_utilszdjango.db.modelsrTr) r" __module____name__ startswithreplacetuplerrdefaultr)rpathr r!s rr*z Q.deconstructQs.333T^5L5LM ??9 : : T<< >@RSSDT]## >T\ ) )#'>F< < &!%F: T6!!r)NTNFF)rJrI __qualname____doc__rrrNr$rr1r4r6r9rFr* __classcell__)r"s@rrrs C BGK)-lllllll ---...  " " " " " " "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)rrVs rrzDeferredAttribute.__init__cs  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__rVattname_check_parent_chainrefresh_from_db)rinstancer data field_namevals r__get__zDeferredAttribute.__get__fsw  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. N)_metaget_ancestor_linkrVmodel primary_keyr'rZ)rr]opts link_fields rr[z%DeferredAttribute._check_parent_chainysT ~++DJ,<== : ! 9djJ&>&>8Z%788 8trr )rJrIrPrQrrar[rrrTrT^sP    &     rrTceZdZedZeejddZdZdZ e dZ edZ ed d Z ed d ZdS) RegisterLookupMixincR||dSr ) get_lookupsget)r lookup_names r _get_lookupzRegisterLookupMixin._get_lookups"  $$[$777rN)maxsizechdtj|D}||S)NcDg|]}|jdiS) class_lookups)rYrn).0parents r z3RegisterLookupMixin.get_lookups..s*dddf,,_bAAdddr)inspectgetmro merge_dicts)r rts rrmzRegisterLookupMixin.get_lookupss7edPWP^_bPcPcddd }---rcddlm}||}|*t|dr|j|S|t ||sdS|S)Nr)Lookup output_field)django.db.models.lookupsr|rpr)r} get_lookup issubclass)rror|founds rrzRegisterLookupMixin.get_lookupsp333333  -- =WT>::=$// << <  Zv%>%> 4 rcddlm}||}|*t|dr|j|S|t ||sdS|S)Nr) Transformr})r~rrpr)r} get_transformr)rrorrs rrz!RegisterLookupMixin.get_transformsp666666  -- =WT>::=$22;?? ?  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Used by both the query construction code (sql.query.fill_related_selections()) and the model instance creation code (query.get_klass_info()). Arguments: * field - the field to be checked * restricted - a boolean field, indicating if the field list has been manually restricted using a requested clause) * requested - The select_related() dictionary. * load_fields - the set of fields to be loaded on this model * reverse - boolean, True if we are checking a reverse select related FzField rHzM cannot be both deferred and traversed using select_related at the same time.T) remote_field parent_linkrelated_query_namenamenullrZrerc object_namer)rV restricted requested load_fieldsreversemsgs rselect_related_descendrs  u %gu  u//11BB5 5:Y665 %*u& = + + &ejI555[&222EJJJ@!oo% 4rctdt|dzD]>}tj|d|}||vr||r||||dfcS?dS)z Check if the lookup_parts contains references to the given annotations set. Because the LOOKUP_SEP is contained in the default annotation names, check each prefix of the lookup_parts for a match. rN)Fri)rangelenrjoin) lookup_parts annotationsnlevel_n_lookups rrefs_expressionrs~ 1c,''!+ , ,AA#ac):;; [ ( ([-H (~. QRR0@@ @ @ @ 9rcpfd}||p%t|ddo||jjS)z Check that self.model is compatible with target_opts. Compatibility is OK if: 1) model and opts match (where proxy inheritance is removed) 2) model is parent of opts' model or the other way around cjj|jkp5|jjvp|vSr )rcconcrete_modelget_parent_list)rgres rcheckz-check_rel_lookup_compatibility..checksO K &$*= = ,  5;#>#>#@#@ @ , T))++ + rrfF)r'rerc)re target_optsrVrs` rcheck_rel_lookup_compatibilityrsY     k L  u - - J%% 8I2J2JrcFeZdZdZeddZdZdZdZdZ dS) FilteredRelationz7Specify custom filtering in the ON clause of SQL joins. conditionc|std||_d|_t|tstd||_g|_dS)Nzrelation_name cannot be empty.z*condition argument must be a Q() instance.) ValueError relation_namealiasr&rrrO)rrrs rrzFilteredRelation.__init__s\ ?=>> >* )Q'' KIJJ J" rct||jstS|j|jko|j|jko|j|jkSr )r&r"NotImplementedrrrr3s r__eq__zFilteredRelation.__eq__$sQ%00 "! !  %"5 5 . J%+ % . Neo - rc|t|j|j}|j|_|jdd|_|S)Nr)rrrrrO)rclones rrzFilteredRelation.clone-s8 !3t~NNNj Yqqq\  rc td)zz QuerySet.annotate() only accepts expression-like arguments (with a resolve_expression() method). z0FilteredRelation.resolve_expression() is unused.)NotImplementedError)rr r!s rrFz#FilteredRelation.resolve_expression3s ""TUUUrc|j}||jt|j}||S)N)rA)r@build_filtered_relation_qrsetrOcompile)rcompiler connectionr@wheres ras_sqlzFilteredRelation.as_sql:s?//c$)nn/UU&&&rN) rJrIrPrQrrrrrFrrirrrrs{AA34133    VVV'''''rr)F)rQr%rrx collectionsrdjango.core.exceptionsrdjango.db.models.constantsr django.utilsrrr NoderrTrkrrrrrirrrs """"""------111111 :j"k l l((( >">">">">" >">">"B%%%%%%%%P@+@+@+@+@+@+@+@+F""""J   8''''''''''''''''''''r