o
    XJ@h                    @  s  d Z ddlmZ ddlZddlZddlmZ ddlmZ ddlmZ ddlm	Z	 ddlm
Z
 dd	lmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlmZ d
dlm Z  d
dl!m"Z" d
dl!m#Z# d
dl!m$Z$ d
dl!m%Z% d
d lm&Z& d
d!lm'Z' d
d"l(m)Z) d
d#l*m+Z+ d
d$l,m-Z- d
d%lm.Z. d
d&lm/Z/ d'd(lm0Z0 d'dlmZ1 d'd)lm2Z2 d'd*lm3Z3 d'd+lm4Z4 d'dlmZ d'dl4mZ5 d'd,l4m6Z6 d'd-l7m8Z8 d'd.l7m9Z9 d'd/l:m;Z; e
r3d
d0l<m=Z= d
d1lm>Z> d'd2l?m@Z@ 					3	dfd4d5ZAejBjCd3d3d6G d7d8 d8e&ZDe3jEejBjCd9d3d6G d:d; d;e&ZFe3jEejBjCd9d<G d=d> d>eFZGe3jEejBjCd9d9d?ejBjCd9d9d9d@ejBjCd9dAG dBdC dCe&ZHG dDdE dEZIG dFdG dGe&ZJe3jEej>jCd9dAG dHdI dIe&ZKe3jEej>jCdJdKej>jCddKG dLdM dMeJZLe3jEej>jCd9dKej>jCdNdKej>jCdOdKej>jCdPdKej>jCdQdKG dRdS dSeJejMe3jNZOG dTdU dUZPG dVdW dWeJZQej>jCdXdKG dYdZ dZeQZRe3jEej>jCd[dKG d\d] d]eQZSe3jEej>jCd^dKej>jCd3dKG d_d` d`eJZTe3jEej>jCdadKG dbdc dceQejMZUddde ZVdS )gzWsqlalchemy.orm.interfaces.LoaderStrategy
   implementations, and related MapperOptions.    )annotationsN)Any)Dict)Optional)Tuple)TYPE_CHECKING)Union   )
attributes)exc)
interfaces)loading)path_registry)
properties)query)relationships)
unitofwork)util)_DEFER_FOR_STATE)_RAISE_FOR_STATE)_SET_DEFERRED_EXPIRED)ATTR_WAS_SET)LoaderCallableStatus)PASSIVE_OFF)PassiveFlag)_column_descriptions)ORMCompileState)ORMSelectCompileState)QueryContext)LoaderStrategy)StrategizedProperty)_state_session)InstanceState)Load)_none_only_set)AliasedClass   )event)inspect)log)sql)visitors)LABEL_STYLE_TABLENAME_PLUS_COL)Select)Literal)Mapper)RelationshipProperty)ColumnElementFc	                   s   g }
|o| j |r| jr|
t | j| jjv r+| jj| j \|
fdd |r3|
tj |rG| j	  rG| j
rG|
 fdd |jD ]C}| |j| ju r|j| jstj|j| jf| |||oq| jpq| jtju ||||| p{| j | jd|	}|
D ]}|||  qqJd S )Nc                   s   t j| |j fi S N)orm_utilZ_validator_eventskeydescprop)fnopts L/var/www/html/venv/lib/python3.10/site-packages/sqlalchemy/orm/strategies.py<lambda>\   s
    z%_register_attribute.<locals>.<lambda>c                   s   t |  S r2   )r
   Zbackref_listenersr5   )backrefuselistr:   r;   r<   j   s    )Zparent_tokenr>   compare_function	useobjectZtrackparenttypecallable	callable_active_history
impl_classZsend_modified_eventsdoc)r>   Zsingle_parentappendsingle_parent_validatorr4   parentZ
validatorsr   Ztrack_cascade_eventsZback_populatesZ_effective_sync_backrefZself_and_descendants_propsgetclass_managerZ_attr_has_implr
   Zregister_attribute_implclass_	directionr   Z	ONETOMANYZviewonlyrE   )r7   mapperr@   r?   rA   rB   Zproxy_propertyrC   rD   kwZlisten_hooksmr6   hookr:   )r=   r8   r9   r>   r;   _register_attributeF   s^   





rR   )
instrumentdeferredc                      s8   e Zd ZdZdZ fddZ	d
ddZdd	 Z  ZS )UninstrumentedColumnLoaderzRepresent a non-instrumented MapperProperty.

    The polymorphic_on argument of mapper() often results in this,
    if the argument is against the with_polymorphic selectable.

    columnsc                      t  || | jj| _d S r2   )super__init__parent_propertyrW   selfrH   strategy_key	__class__r:   r;   rZ         z#UninstrumentedColumnLoader.__init__Nc           	      K  s*   | j D ]}|r|j | }||| qd S r2   )rW   _append_dedupe_col_collection)	r]   compile_statequery_entitypathloadoptadaptercolumn_collectionkwargscr:   r:   r;   setup_query   s
   


z&UninstrumentedColumnLoader.setup_queryc	           	      C  s   d S r2   r:   	r]   contextrd   re   rf   rN   resultrg   
populatorsr:   r:   r;   create_row_processor   s   z/UninstrumentedColumnLoader.create_row_processorr2   )	__name__
__module____qualname____doc__	__slots__rZ   rk   rp   __classcell__r:   r:   r_   r;   rU      s    
rU   Tc                      s@   e Zd ZdZdZ fddZ	dddZdd	 Zd
d Z  Z	S )ColumnLoaderz8Provide loading behavior for a :class:`.ColumnProperty`.)rW   is_compositec                   s*   t  || | jj| _t| jd| _d S )Ncomposite_class)rY   rZ   r[   rW   hasattrrx   r\   r_   r:   r;   rZ      s   
zColumnLoader.__init__Fc	                 K  sv   | j D ]}
|r|r||
}
|
d u r d S n|j |
 }
||
| q| j d }|r4|j | }|d u r4d S ||| j< d S Nr   )rW   Zadapt_check_presentrb   r[   )r]   rc   rd   re   rf   rg   rh   memoized_populatorsZcheck_for_adaptri   rj   fetchr:   r:   r;   rk      s   




zColumnLoader.setup_queryc                 C  s`   d| _ | jd j}| jjp"| jd jp"|jd uo"|j|jd | ju }t	| j|d|j
|d d S )NTr   F)r@   r?   rC   )is_class_levelrW   typer[   rC   primary_keyZversion_id_col_columntopropertyrJ   rR   compare_values)r]   rN   ZcoltyperC   r:   r:   r;   init_class_attribute   s"   



z!ColumnLoader.init_class_attributec	                 C  s\   | j D ]}	|r|j |	 }	||	d}
|
r!|d | j|
f  d S q|d | jdf d S NFZquickexpireT)rW   _getterrF   r4   )r]   rm   rd   re   rf   rN   rn   rg   ro   colgetterr:   r:   r;   rp     s   

z!ColumnLoader.create_row_processorF)
rq   rr   rs   rt   ru   rZ   rk   r   rp   rv   r:   r:   r_   r;   rw      s    
!rw   )Zquery_expressionc                      s4   e Zd Z fddZdd Zdd Zdd Z  ZS )	ExpressionColumnLoaderc                   s<   t  || t d  t fdd| jjD | _d S )Nc                 3  s    | ]	}|   V  qd S r2   )compare.0rj   nullr:   r;   	<genexpr>)  s    
z2ExpressionColumnLoader.__init__.<locals>.<genexpr>)	rY   rZ   r*   r   labelanyr[   rW   _have_default_expressionr\   r_   r   r;   rZ   "  s
   zExpressionColumnLoader.__init__c                 K  s   d }	|r|j r|j }	n| jr| jj}	|	d u rd S |	D ]}
|r#|j|
 }
||
| q|	d }|r;|j| }|d u r;d S ||| j< d S r{   )_extra_criteriar   r[   rW   rb   )r]   rc   rd   re   rf   rg   rh   r|   ri   rW   rj   r}   r:   r:   r;   rk   -  s"   


z"ExpressionColumnLoader.setup_queryc	                 C  sr   |r5|j r7|j }	|	D ]}
|r|j|
 }
||
d}|r(|d | j|f  d S q
|d | jdf d S d S d S r   )r   rW   r   rF   r4   )r]   rm   rd   re   rf   rN   rn   rg   ro   rW   r   r   r:   r:   r;   rp   R  s   

z+ExpressionColumnLoader.create_row_processorc                 C  s(   d| _ t| j|d| jd jjdd d S )NTFr   )r@   r?   Zaccepts_scalar_loader)r~   rR   r[   rW   r   r   r]   rN   r:   r:   r;   r   l  s   
z+ExpressionColumnLoader.init_class_attribute)rq   rr   rs   rZ   rk   rp   r   rv   r:   r:   r_   r;   r     s
    %r   )rT   rS   )rT   rS   	raiseload)Z
do_nothingc                      sP   e Zd ZdZdZ fddZdd Zdd Z		dd
dZdd Z	dd Z
  ZS )DeferredColumnLoaderzAProvide loading behavior for a deferred :class:`.ColumnProperty`.)rW   groupr   c                   sJ   t  || t| jdrtd| jdd| _| jj| _| jj	| _	d S )Nry   z8Deferred loading for composite types not implemented yetr   F)
rY   rZ   rz   r[   NotImplementedErrorstrategy_optsrJ   r   rW   r   r\   r_   r:   r;   rZ     s   
zDeferredColumnLoader.__init__c	           
   
   C  s   |j r"|jjjr"| j|jjjv r"| jd|||||||| d S | js=| j	r-| jj
}	n| jj}	|d | j|	f d S |d | jdf d S )N)rT   FrS   Tnewr   F)refresh_stater   _compile_options_only_load_propsr4   r[   _get_strategyrp   r~   r   Z_raise_column_loaderZ_deferred_column_loaderrF   )
r]   rm   rd   re   rf   rN   rn   rg   ro   Zset_deferred_for_local_stater:   r:   r;   rp     s4   z)DeferredColumnLoader.create_row_processorc                 C  s,   d| _ t| j|d| jd jj| jdd d S )NTFr   )r@   r?   rB   Zload_on_unexpire)r~   rR   r[   rW   r   r   _load_for_stater   r:   r:   r;   r     s   
z)DeferredColumnLoader.init_class_attributeNc	           
      K  s   |j jr| jjs*|rt| j| jjs*|r#| j	r#|j
d| j	 ds*|r?| j|v r?| jdj|||||||fi |	 d S | jrIt|| j< d S | jsSt|| j< d S t|| j< d S )Nzundefer_group_%sFr   )compile_optionsZ_render_for_subqueryr[   Z_renders_in_subqueriessetrW   intersectionrH   Z_should_undefer_in_wildcardr   
local_optsrJ   r4   r   rk   r~   r   r   r   r   )
r]   rc   rd   re   rf   rg   rh   r|   Zonly_load_propsrO   r:   r:   r;   rk     sP   




z DeferredColumnLoader.setup_queryc                   s   j stjS |tj@ stjS jj} jr  fdd|j	D }n j g}fdd|D }t
}|d u rBtdt j f  jrL |d tjt|t tjS )Nc                   s4   g | ]}t |trt |jtr|j jkr|jqS r:   )
isinstancer    strategyr   r   r4   )r   pr]   r:   r;   
<listcomp>	  s    
z8DeferredColumnLoader._load_for_state.<locals>.<listcomp>c                   s   g | ]	}| j v r|qS r:   )Z
unmodified)r   k)stater:   r;   r     s    zfParent instance %s is not bound to a Session; deferred load operation of attribute '%s' cannot proceedraise)r4   r   
ATTR_EMPTYr   SQL_OKPASSIVE_NO_RESULTmanagerrN   r   Ziterate_propertiesr!   orm_excDetachedInstanceErrorr3   	state_strr   _invoke_raise_loadr   Zload_scalar_attributesr   r   r   )r]   r   passivelocalparentZtoloadr   sessionr:   )r]   r   r;   r     s0   

z$DeferredColumnLoader._load_for_statec                 C  s   t d| f )Nz+'%s' is not available due to raiseload=Truesa_excInvalidRequestErrorr]   r   r   lazyr:   r:   r;   r   '  s   z'DeferredColumnLoader._invoke_raise_loadr2   )rq   rr   rs   rt   ru   rZ   rp   r   rk   r   r   rv   r:   r:   r_   r;   r   x  s    
3
3(r   c                   @  s*   e Zd ZdZddddZejfd	d
ZdS )LoadDeferredColumnsz7serializable loader object used by DeferredColumnLoaderFr4   strr   boolc                 C  s   || _ || _d S r2   )r4   r   )r]   r4   r   r:   r:   r;   rZ   0  s   
zLoadDeferredColumns.__init__c                 C  s>   | j }|jj}|j| }| jrd}nd}||}|||S )N)rT   Tr   )r   T)r   r   )r4   r   rN   rI   r   r   r   )r]   r   r   r4   r   r7   r^   r   r:   r:   r;   __call__4  s   

zLoadDeferredColumns.__call__Nr   )r4   r   r   r   )rq   rr   rs   rt   rZ   r
   r   r   r:   r:   r:   r;   r   -  s    r   c                      s,   e Zd ZdZdZ fddZdd Z  ZS )AbstractRelationshipLoaderz0LoaderStratgies which deal with related objects.)rN   targetr>   entityc                   s:   t  || | jj| _| jj| _| jj| _| jj| _d S r2   )rY   rZ   r[   rN   r   r   r>   r\   r_   r:   r;   rZ   J  s
   


z#AbstractRelationshipLoader.__init__c	           	   
   C  s    | j d||||||||S )N))r   	immediate)r[   r   rp   rl   r:   r:   r;   #_immediateload_create_row_processorQ  s   z>AbstractRelationshipLoader._immediateload_create_row_processor)rq   rr   rs   rt   ru   rZ   r   rv   r:   r:   r_   r;   r   E  s
    r   c                   @  s   e Zd ZdZdS )DoNothingLoaderzRelationship loader that makes no change to the object's state.

    Compared to NoLoader, this loader does not initialize the
    collection/attribute to empty/none; the usual default LazyLoader will
    take effect.

    N)rq   rr   rs   rt   r:   r:   r:   r;   r   j  s    r   Znoload)r   c                   @  s$   e Zd ZdZdZdd Zdd ZdS )NoLoaderzQProvide loading behavior for a :class:`.Relationship`
    with "lazy=None".

    r:   c                 C  s    d| _ t| j|d| jjd d S )NT)r@   rA   )r~   rR   r[   collection_classr   r:   r:   r;   r     s   
zNoLoader.init_class_attributec	           
        s$    fdd}	|d   j|	f d S )Nc                   s(    j rt| | j d S d | j< d S r2   )r>   r
   init_state_collectionr4   r   dict_rowr   r:   r;   invoke_no_load  s   z5NoLoader.create_row_processor.<locals>.invoke_no_loadr   )rF   r4   )
r]   rm   rd   re   rf   rN   rn   rg   ro   r   r:   r   r;   rp     s   zNoLoader.create_row_processorN)rq   rr   rs   rt   ru   r   rp   r:   r:   r:   r;   r   v  s
    
r   selectr   raise_on_sqlZbaked_selectc                      s   e Zd ZU dZdZded< ded< ded< ded< d	ed
< d# fddZdd Zdd Zdd Z	dd Z
ddddejfddZdd Zeddd  Zd!d" Z  ZS )$
LazyLoaderztProvide loading behavior for a :class:`.Relationship`
    with "lazy=True", that is loads when first accessed.

    )
_lazywhere_rev_lazywhereZ_lazyload_reverse_option	_order_byuse_getis_aliased_class_bind_to_col_equated_columns_rev_bind_to_col_rev_equated_columns_simple_lazy_clause_raise_always_raise_on_sqlzColumnElement[bool]r   zDict[str, ColumnElement[Any]]r   r   r   RelationshipProperty[Any]r[   rH   r^   Tuple[Any, ...]c                   s8  t  || | jd dk| _| jd dk| _t| jj| _| jj	}|
 \| _| _| _|j
dd\| _| _| _| jjrJdd t| jjD | _nd | _| jd| | j | j om| j om| jjd	 j| jdd
| jjd| _| jrt| jD ]}|| jjv r| jj| D ]
}| j| | j|< qqw| jd|  d S d S )Nr   r   r   T)Zreverse_directionc                 S  s   g | ]
}t |d diqS )
_orm_adaptT)sql_util_deep_annotater   elemr:   r:   r;   r     s    z'LazyLoader.__init__.<locals>.<listcomp>z%s lazy loading clause %sr   FZuse_proxiesZcompare_keysequivalentsz4%s will use Session.get() to optimize instance loads)rY   rZ   r   r   r   r(   r   r   r[   _join_conditionZcreate_lazy_clauser   r   r   r   r   r   order_byr   to_listr   loggerinfor>   _get_clauser   rN   _equivalent_columnsr   list)r]   rH   r^   Zjoin_conditionr   rj   r_   r:   r;   rZ     sR   


zLazyLoader.__init__c              	   C  sv   d| _ | jj}| jjrd}d}n| jjtjus| js&|r!d}d}n	d}d}nd }}t| j|d| j	| jj
||d d S )NTF)r@   rB   rA   rC   _deferred_history)r~   r[   _legacy_inactive_history_stylerC   rM   r   	MANYTOONEr   rR   r   r   )r]   rN   r   rC   r   r:   r:   r;   r      s0   
zLazyLoader.init_class_attributec                   sd   t | jddi}|| j} g dd }t|i d|i  fdd}t|i d|i}|fS )Nr   Tc                 S  s
   d| _ d S )NF)unique	bindparamr:   r:   r;   visit_bindparam+  s   
zFLazyLoader._memoized_attr__simple_lazy_clause.<locals>.visit_bindparamr   c                   sL   | j  v r| j | j  d f d S | jd u r$| jd | jf d S d S r2   )Z_identifying_keyrF   r4   callablevaluer   Zbind_to_colparamsr:   r;   r   0  s   

)r   r   r   r   r+   traverseZcloned_traverse)r]   Z	lazywhere	criterionr   r:   r   r;   "_memoized_attr__simple_lazy_clause"  s   

z-LazyLoader._memoized_attr__simple_lazy_clausec                 C  s   | j \}}|d u rt|dd |D S | jj}| }t|}|tj	@ r+|tj	N }i }|D ]%\}	}
}|
d urP|rH|tj
@ rH||||
|}n||||
|}|||	< q/||fS )Nc                 S  s   g | ]\}}}|qS r:   r:   )r   r4   identr   r:   r:   r;   r   G      z4LazyLoader._generate_lazy_clause.<locals>.<listcomp>)r   r   Zadapt_criterion_to_nullr[   rH   objr
   instance_dictr   ZINIT_OKLOAD_AGAINST_COMMITTED#_get_committed_state_attr_by_column_get_state_attr_by_column)r]   r   r   r   Z
param_keysrN   or   r   r4   r   r   r:   r:   r;   _generate_lazy_clauseB  s,   




z LazyLoader._generate_lazy_clausec                 C  s   t d| |f )Nz&'%s' is not available due to lazy='%s'r   r   r:   r:   r;   r   b  s   
zLazyLoader._invoke_raise_loadNr:   c                 C  s  |j s| jjs
|jr|jstjS |j  }d }	| jo| p|j }
|t	j
@ s'|
r.|tj@ s1|r1tjS | jrG|t	j@ sG|
r@|t	j@ rG| ||d t|}|sb|t	j@ rUtjS tdt|| j f |
r| |||}	tj|	v rstjS tj|	v r{tjS | jjst|	rd S nt|	rd S | j |jv r|t	j@ stj S |j!| j"|	||d}|d ur|tj#u rd S |S |t	j
@ r|t	j@ stjS | $|||	||||||	S )Nr   zbParent instance %s is not bound to a Session; lazy load operation of attribute '%s' cannot proceed)r   Zlazy_loaded_from)%r4   r[   Zload_on_pendingZ_load_pendingZ
session_idr   r   r   r   r   r   r
   ZNON_PERSISTENT_OKr   r   NO_RAISEZRELATED_OBJECT_OKr   r!   r   r   r3   r   _get_ident_for_use_getZ	NEVER_SETrN   Zallow_partial_pksr$   r   
issupersetdictDEFERRED_HISTORY_LOADr   Z_identity_lookupr   ZPASSIVE_CLASS_MISMATCH_emit_lazyload)r]   r   r   rf   extra_criteriaextra_optionsalternate_effective_pathexecution_optionspendingprimary_key_identityr   r   instancer:   r:   r;   r   g  s   






zLazyLoader._load_for_statec                   sD   j j}tj@ r|jn|jj  fddjjD S )Nc                   s"   g | ]} j | d qS )r   r   r   pkr   Zget_attrr   r]   r   r:   r;   r     s    z5LazyLoader._get_ident_for_use_get.<locals>.<listcomp>)r   rN   r   r  r  r  r  r   )r]   r   r   r   instance_mapperr:   r  r;   r	    s   
z!LazyLoader._get_ident_for_use_getzsqlalchemy.orm.strategy_optionsc
                   s  t jj j }
tj|
g|
jtt	j
d}tj}|d|d7 } jjd ur.| j jj}|j }|s9|tj@ rAt ddi|_ j}|jsL|rt|jrt|d u rW|j j }n| j }|j}|rp|jrpd}|t j|f7 }||_n|d u r|jj j }n| j }|r| j|7  _| jd|i7  _|r jr|t j!@ s "||d t#j$|||||	dS  j%r j%|_& fdd	}| j'| jff7  _' (||\}}|	rt j)*|	d
|i}	nd
|i}	 j|j+v r|t j,@ st-j.S |rt /tj0|1 rd S nt /tj2|1 rd S  jr|t j!@ s "||d |f|_3|j4|||	d}|5 6 7 } j8r6|S t9|}|rN|dkrJt :d j  |d S d S )N)_raw_columns_propagate_attrs_label_styler   F)Z_invoke_all_eagers_lazy_loaded_fromZ	autoflush_current_pathr   )load_optionsr  c                   sR    j jD ]"}|jtju r&|jr&t|jts&j	
| jj|j ||  qd S r2   )r[   Z_reverse_propertyrM   r   r   Z_use_getr   r   r   r#   Z_construct_for_existing_pathr   r  rH   ZlazyloadZprocess_compile_state)compile_contextrevr]   strategy_optionsr:   r;   _lazyload_reverseB  s   
z4LazyLoader._emit_lazyload.<locals>._lazyload_reverseZ_sa_orm_load_options)r  r	   zKMultiple rows returned with uselist=False for lazily-loaded attribute '%s' r   );r   Z	preloadedZorm_strategy_optionsr   __clause_element__r-   _create_raw_selectr  r,   r   default_compile_optionsr   Zdefault_load_optionsr[   Z	secondaryselect_fromrN   r4   r
   ZNO_AUTOFLUSHimmutabledict_execution_optionsr   r   r   Z	load_pathr3   LoaderCriteriaOption_with_options_path_registryr   r   r   r  r   r   Zload_on_pk_identityr   _order_by_clausesZ_with_context_optionsr  
EMPTY_DICT
merge_withr  r  r   r   Zhas_intersectionZ	_none_setvaluesZ
_never_setZ_where_criteriaexecuter   Zscalarsallr>   lenwarn)r]   r   r   r  r   rf   r  r  r  r  Zclauseelementstmtr   r  r   effective_pathr9   r%  Zlazy_clauser   rn   lr:   r#  r;   r    s   





zLazyLoader._emit_lazyloadc	              
     s   | j  |jjr |jjjr | j |jjjv r | ||||||||S | jr(|rI|jrIt	
|jt | ||jr8||nd  }	|d | j |	f d S |jsO|jra fdd}
|d | j |
f d S d S )Nr   c                   s   |  |  d S r2   )_resetr   r4   r:   r;   reset_for_lazy_callable  s   	z@LazyLoader.create_row_processor.<locals>.reset_for_lazy_callable)r4   r   Z_is_user_refreshr   r   r   r   r~   r   r"   Z"_instance_level_callable_processorrK   LoadLazyAttribute_generate_extra_criteriarF   populate_existingZalways_refresh)r]   rm   rd   re   rf   rN   rn   rg   ro   Zset_lazy_callabler<  r:   r;  r;   rp     sF   

zLazyLoader.create_row_processor)rH   r   r^   r   )rq   rr   rs   rt   ru   __annotations__rZ   r   r   r  r   r   r0  r   r	  Zpreload_moduler  rp   rv   r:   r:   r_   r;   r     s0   
 	<"  	
w
 r   c                   @  s.   e Zd ZdZdd Zdd ZejfddZdS )	r=  a  semi-serializable loader object used by LazyLoader

    Historically, this object would be carried along with instances that
    needed to run lazyloaders, so it had to be serializable to support
    cached instances.

    this is no longer a general requirement, and the case where this object
    is used is exactly the case where we can't really serialize easily,
    which is when extra criteria in the loader option is present.

    We can't reliably serialize that as it refers to mapped entities and
    AliasedClass objects that are local to the current process, which would
    need to be matched up on deserialize e.g. the sqlalchemy.ext.serializer
    approach.

    c                 C  s   || _ |j| _|| _|| _d S r2   r4   r^   rf   r  )r]   r4   Zinitiating_strategyrf   r  r:   r:   r;   rZ     s   
zLoadLazyAttribute.__init__c                 C  s(   | j d ur
td | j| j| jddS )NzvCan't reliably serialize a lazyload() option that contains additional criteria; please use eager loading for this caser:   rA  )r  r   r6  r4   r^   rf   r   r:   r:   r;   __getstate__  s   
zLoadLazyAttribute.__getstate__c                 C  s:   | j }|jj}|j| }|j| j }|j||| j| jdS )N)rf   r  )	r4   r   rN   rI   Z_strategiesr^   r   rf   r  )r]   r   r   r4   r  r7   r   r:   r:   r;   r     s   
zLoadLazyAttribute.__call__N)	rq   rr   rs   rt   rZ   rB  r
   r   r   r:   r:   r:   r;   r=    s
    r=  c                   @  s   e Zd ZdZdZdddZdS )
PostLoaderz;A relationship loader that emits a second SELECT statement.r:   Nc                 C  sF  |j jptjj| }| }td|i}|r#|j	dd }|dk}	nd }d}	|d ura| j
js9td| j
 d|j	dt|  |}|	sQ|dk rQ|d||fS |	sa|dt|  |d	 i}tj||| j
rp|d||fS || j
 }
|| j
 }|
|jd
s|r|jd |kr|d||fS n|| jr|d||fS |d||fS )NZsa_top_level_orm_contextrecursion_depthFz'recursion_depth option on relationship z0 not valid for non-self-referential relationshipZ_recursion_depth_r   r	   loaderr&   T)rc   current_pathr3   PathRegistryrootZ_get_top_level_contextr   r*  r   rJ   r[   Z_is_self_referentialr   r   r  idunionr   PostLoadZpath_existscontainsr
   lengthcontains_mapperrN   )r]   rm   re   rf   
join_depthr8  Ztop_level_contextr  rD  Zunlimited_recursionpath_w_propZeffective_path_w_propr:   r:   r;   _setup_for_recursion  sn   


zPostLoader._setup_for_recursionr2   )rq   rr   rs   rt   ru   rR  r:   r:   r:   r;   rC    s    rC  r   c                      s8   e Zd ZdZ fddZdd Zdd Zdd	 Z  ZS )
ImmediateLoaderrP  c                   rX   r2   rY   rZ   r[   rP  r\   r_   r:   r;   rZ   W  ra   zImmediateLoader.__init__c                 C     | j d| d S N)r   r   r[   r   r   r   r:   r:   r;   r   [     z$ImmediateLoader.init_class_attributec	                 C  sl   |j jjsd S | |||| j\}	}
}}|
stjtjB }ntj	tjB }t
j||	| j| j| j||||	 d S r2   )rc   r   _enable_eagerloadsrR  rP  r
   ZPASSIVE_NO_FETCH_RELATEDr   r  r   r   rL  callable_for_pathrH   r[   _load_for_path)r]   rm   rd   re   rf   rN   rn   rg   ro   r8  
run_loaderr  rD  flagsr:   r:   r;   rp   `  s,   
z$ImmediateLoader.create_row_processorc	                 C  s   |rt |jj}	|| f|	_| }
|	f}n|}
d}| j}| jd}|D ](\}}|j	}|s3||vrN|j
||||
|d}|ttjfvrN||||| q&d S )Nr:   rX  )r  r  r  )r#   re   r   Z_recurserm   _truncate_recursiver4   r[   r   r  r   r   r   r   get_implset_committed_value)r]   rm   re   states	load_onlyrf   r_  rD  r  Znew_optr  r  r4   
lazyloaderr   	overwriter   r   r:   r:   r;   r]    s<   
zImmediateLoader._load_for_path)	rq   rr   rs   ru   rZ   r   rp   r]  rv   r:   r:   r_   r;   rS  S  s    *rS  subqueryc                      s   e Zd ZdZ fddZdd Zdd Zdd	 Zd
d Zdd Z	dd Z
dd ZG dd dZdd Zdd Zdd Zdd Z  ZS )SubqueryLoaderrT  c                   rX   r2   rU  r\   r_   r:   r;   rZ     ra   zSubqueryLoader.__init__c                 C  rV  rW  rY  r   r:   r:   r;   r     rZ  z#SubqueryLoader.init_class_attributec                   s   |}|j }t|d }| j|r!| j|d u r!| j| j }n||d  }|rK|j| jj| t	|t	 }|rJt
j|| d  7 n||j}	 fdd|	D }
 |
|fS )Nr   r	   c                   s&   g | ]}t jd  j j| jqS r   )getattrre   r   r   r4   r   leftmost_mapperZnew_subq_pathr:   r;   r     s    

z0SubqueryLoader._get_leftmost.<locals>.<listcomp>)re   r3   Z_class_to_mapperrH   isar[   	_entitiesentity_zeror.  r5  r   rH  Zcoercelocal_columns)r]   orig_query_entity_index	subq_pathZcurrent_compile_stateis_rootZgiven_subq_pathZsubq_mapperZleftmost_prop
additionalZleftmost_colsleftmost_attrr:   rk  r;   _get_leftmost  s4   
zSubqueryLoader._get_leftmostc                 C  s*  |  d }tjtj}|j|j |}|js0d|_|j	j
|gdd t||dD R   |dd |D | }	|	|_|j}
|
du rKd|_n|
d u rfdd |	D D ]}t|	|jsed|_ nqV|jsld	|_|jdu r|jrt|	|j}|r||	|  |t }tj||dd
}|S )NFc                 S  s    h | ]}|d  dur|d  qS )r   Nr:   )r   Zentr:   r:   r;   	<setcomp>  s
    z?SubqueryLoader._generate_from_original_query.<locals>.<setcomp>)rc   c                 S  s   g | ]}t jt jj|qS r:   )r*   Z	coercionsexpectZrolesZColumnsClauseRole)r   r  r:   r:   r;   r   /      z@SubqueryLoader._generate_from_original_query.<locals>.<listcomp>Tc                 S  s   h | ]}|j qS r:   )tabler   r:   r:   r;   rw  >  s    r:   use_mapper_path)Z_cloneZ	correlater   Query__new____dict__updateZ	_from_objZ_enable_assertionsr)  Znon_generativer   Z_adapt_col_listZ_get_current_adapterr  distinct_target_keyZ	_distinctr   r
  r   Z_has_row_limiting_clauser/  r   Z expand_column_list_from_order_byZ_set_entitiesZset_label_styler,   rg  r3   r%   )r]   orig_compile_state
orig_queryrl  ru  leftmost_relationshipZorig_entityqq2Ztarget_colsr  tZto_addZembed_q
left_aliasr:   r:   r;   _generate_from_original_query  sX   z,SubqueryLoader._generate_from_original_queryc                   s   g }t | }t|D ]'\}\}}|dkr)||d  d j}||r&|n|}	n|}	||	|jf qt|dk r=| nt|d d }
|
j	rL|
j
 ntj|
j
dd jj} fdd|D }|| fS )	Nr   r	   r&   rE  Tr{  c                   s    g | ]}t  jj| jqS r:   )rj  rH   r   r4   r   parent_aliasr]   r:   r;   r     s    z2SubqueryLoader._prep_for_joins.<locals>.<listcomp>)r   pairs	enumeraterN   rm  rF   r4   r5  r(   r   r   r3   r%   r[   rp  )r]   r  rr  to_joinr  irN   r7   Zprev_mapperZ	to_appendr   
local_cols
local_attrr:   r  r;   _prep_for_joinsZ  s*   
zSubqueryLoader._prep_for_joinsc                 C  s.  t |}|dkrt||d d |g}nu|dkr3t||d d |t||d d |g}nX|dkrdd |dd D }g }|rl|d}	t|	d |	d }
|r`|
|d d }
n|
|}
||
 |sFt||d d |d jg| t||d d |g }|D ]}
||
}q|S )Nr	   r   r&   rE  c                 S  s:   g | ]}t |d  jst|d  n|d  j|d fqS )r   r	   )r(   r   r3   r%   r   )r   itemr:   r:   r;   r     s    	z/SubqueryLoader._apply_joins.<locals>.<listcomp>)r5  rj  of_typepoprF   rH   join)r]   r  r  r  r  effective_entityZltjmiddleinnerr  attrr:   r:   r;   _apply_joins  sF   
	



zSubqueryLoader._apply_joinsc           	      C  sB   |j }|r|jr|t| j||f7 }||}|j| }|S r2   )r-  r   r3   r,  r   r>  Z_with_current_pathoptions)	r]   rm   r  rr  rewritten_pathr  r  rf   new_optionsr:   r:   r;   _setup_options  s   

	
zSubqueryLoader._setup_optionsc                   s&    j jr fdd}|| j }|S )Nc                       |  j tt jj7  _ d S r2   eager_order_bytupler   r   r[   r   r!  r   r:   r;   _setup_outermost_orderby     zISubqueryLoader._setup_outermost_orderby.<locals>._setup_outermost_orderby)r[   r   _add_context_option)r]   r  r  r:   r   r;   r    s   z'SubqueryLoader._setup_outermost_orderbyc                   @  s4   e Zd ZdZdZdd Zdd Zdd Zd	d
 ZdS )zSubqueryLoader._SubqCollectionszGiven a :class:`_query.Query` used to emit the "subquery load",
        provide a load interface that executes the query at the
        first moment a value is needed.

        r   r  r   r   subq_datac                 C  s4   |j | _ |j| _|j| _|jpi | _|| _d | _d S r2   r  )r]   rm   r  r:   r:   r;   rZ     s   
z(SubqueryLoader._SubqCollections.__init__c                 C  s    | j d u r	|   | j ||S r2   )r  _loadrJ   )r]   r4   defaultr:   r:   r;   rJ   	  s   
z#SubqueryLoader._SubqCollections.getc                 C  s   t t| _| j}|jd u sJ || j}| jjr|	 }t|
| j
}t|dd D ]\}}| j| dd |D  q.d S )Nc                 S  s   | dd  S )Nr	   r:   xr:   r:   r;   r<     s    z7SubqueryLoader._SubqCollections._load.<locals>.<lambda>c                 s      | ]}|d  V  qdS )r   Nr:   r   Zvvr:   r:   r;   r         z8SubqueryLoader._SubqCollections._load.<locals>.<genexpr>)collectionsdefaultdictr   r  r  r   Zwith_sessionr   Z_populate_existingr?  r   	itertoolsgroupbyextend)r]   r  rowsr   vr:   r:   r;   r    s   z%SubqueryLoader._SubqCollections._loadc                 C  s   | j d u r|   d S d S r2   )r  r  )r]   r   r   r   r:   r:   r;   rF    s   
z&SubqueryLoader._SubqCollections.loaderN)	rq   rr   rs   rt   ru   rZ   rJ   r  rF  r:   r:   r:   r;   _SubqCollections  s    	
r  c              	   C  s  |j }|jjr|jjrd S |j|}d|_|| j }||j	dd }	|	d ur*|	}
n| j
}
|jjdtjjtjjf\}}|tjju }|| }|| }|jjdtf|j}t|d}|jrq|jjd u rntd| |f  |j}|j|dd}| ||||\}}}}| ||||||}t|
}|jj|jdtf|d||fi|_|d}|  ||\}}}|j!| }| "|||||
}| #||||||
|}| $|}|S )	NTpath_with_polymorphic)Zsubquery_pathsNr  ormzsubqueryloader for "%s" must invoke lambda callable at %r in order to produce a new query, decreasing the efficiency of caching for this statement.  Consider using selectinload() for more effective full-lambda cachingF)legacy)%rc   r   r[  Z_for_refresh_statern  indexZloaders_require_bufferingr[   rJ   r
   r   r   r+  r3   rH  rI  rh  r   Z_get_plugin_class_for_pluginZ_is_lambda_elementr   r  r   r6  Z	_resolvedZ_create_entities_collectionrv  r  r}  r1  r  Z_set_enable_single_critr  Zadd_columnsr  r  r  )r]   rm   rd   re   r   rf   rg   rc   rq  with_poly_entityr  rr  r  rs  r  Zcompile_state_clsr  rl  ru  r  r  r  r  r  r  r:   r:   r;   _setup_query_from_rowproc#  s   	

	






	z(SubqueryLoader._setup_query_from_rowprocc	              
     s  |r|j jd ur|j jjrtdd |jr"| |||||| |S | |||| j\}	}
}	}	|
s3d S t	|j t
s;d S | jj| j jjsKtd|  t|dkr\t|j| js[d S nt|d | jsgd S | ||||d | }|d u ryd S |jd u sJ || j }| jj}||jd}|d u r| ||}||jd|  r fdd|D }| jr| ||||| d S |  ||||| d S )	NzThe subqueryload loader option is not compatible with DML statements such as INSERT, UPDATE.  Only SELECT may be used.This warning will become an exception in a future release.2.0J'%s' does not support object population - eager loading cannot be applied.r	   rE  r  c                      g | ]} j | qS r:   rV   r   rg   r:   r;   r     r   z7SubqueryLoader.create_row_processor.<locals>.<listcomp>)!rc   	statementis_dmlr   warn_deprecatedr   r   rR  rP  r   r   rH   rK   r4   implsupports_populationr   r   r5  r3   _entity_isaro  r  r   r[   rp  rJ   r
   r  r   r>   _create_collection_loader_create_scalar_loader)r]   rm   rd   re   rf   rN   rn   rg   ro   _r^  r  r  r  r:   r  r;   rp     s   
		


z#SubqueryLoader.create_row_processorc                   t   | | fddfdd}|d jf |d j|f |jr8|d j jf d S d S )Nc                   s*     |d}| j| || d S )Nr:   )rJ   ra  r4   rb  )r   r   r   
collectionr  r]   tuple_getterr:   r;   load_collection_from_subq  s   zKSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subqc                      j |vr | || d S d S r2   r;  r   )r  r]   r:   r;   &load_collection_from_subq_existing_row     
zXSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subq_existing_rowr   existingeagerZ_tuple_getterrF   r4   invoke_all_eagersrF  )r]   rm   rn   r  r  ro   r  r:   )r  r  r]   r  r;   r    s   
z(SubqueryLoader._create_collection_loaderc                   r  )Nc                   sL     |d}t|dkrtd  |d }| j| || d S )Nr2   r	   LMultiple rows returned with uselist=False for eagerly-loaded attribute '%s' r   )rJ   r5  r   r6  ra  r4   rb  )r   r   r   r  Zscalarr  r:   r;   load_scalar_from_subq,  s   zCSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subqc                   r  r2   r;  r   )r  r]   r:   r;   "load_scalar_from_subq_existing_row7  r  zPSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subq_existing_rowr   r  r  r  )r]   rm   rn   r  r  ro   r  r:   )r  r  r]   r  r;   r  '  s   
z$SubqueryLoader._create_scalar_loader)rq   rr   rs   ru   rZ   r   rv  r  r  r  r  r  r  r  rp   r  r  rv   r:   r:   r_   r;   rh    s     1d/6"4 	erh  Zjoinedc                      s   e Zd ZdZdZ fddZdd Z			d!d	d
Zdd Zdd Z	dd Z
dd Z		d"d#ddZdd Zdd Zdd Zdd  Z  ZS )$JoinedLoaderz[Provide loading behavior for a :class:`.Relationship`
    using joined eager loading.

    rP  c                   rX   r2   rU  r\   r_   r:   r;   rZ   N  ra   zJoinedLoader.__init__c                 C  rV  rW  rY  r   r:   r:   r;   r   R  rZ  z!JoinedLoader.init_class_attributeNFc	                 K  sp  |j jsdS |r|jdur|jjrtdd n| jrd|_|| j }|r-| 	|||j
nd}
|
dur@| |||||
\}}}n0||j
ds]| jrU|jd | jkrTdS n|| jr]dS | ||||||||\}}}}d|_||j
dd}|durt|j}nd}|| j }tj|| j|||||| j|d		 tj|j}|r|durtd
dd |jD |_dS dS )z@Add a left outer join to the statement that's being constructed.NzThe joinedload loader option is not compatible with DML statements such as INSERT, UPDATE.  Only SELECT may be used.This warning will become an exception in a future release.r  TFrF  r&   r  )with_polymorphicparentmapperchained_from_outerjoinzDetected unaliased columns when generating joined load.  Make sure to use aliased=True or flat=True when using joined loading with with_polymorphic().c                 S  s   g | ]}|d ur|qS r2   r:   r   r:   r:   r;   r     s    z,JoinedLoader.setup_query.<locals>.<listcomp>)r   r[  r  r  r   r  r>   multi_row_eager_loadersr[   _init_user_defined_eager_procr
   $_setup_query_on_user_defined_adapterrM  rP  rN  rO  rN   _generate_row_adapterZeager_adding_joinsrJ   r(   Zwith_polymorphic_mappersr   r   Z_setup_entity_queryZNONE_SETr   secondary_columnsr   r   )r]   rc   rd   re   rf   rg   rh   r  r  ri   user_defined_adapterclausesadd_to_collectionr  r  Z	has_nonesr:   r:   r;   rk   W  s   


zJoinedLoader.setup_queryc           
      C  s   d|j vrdS |jj}||jdd}|dur|S |j d }|dd  \}}|d urEt|tr5|j|}t	j
t	jj|j||jjdd}n#||jdr`||jd}	t	j
t	jj|	|jjd}n|j|jd }||d| |S )NZeager_from_aliasF user_defined_eager_row_processor)
selectabler   Zlimit_on_entityr  )r   )r   re   rH   rJ   r
   r   r   r   aliasr3   
ORMAdapter_TraceAdaptRoleZJOINEDLOAD_USER_DEFINED_ALIASrN   r   rM  Z JOINEDLOAD_PATH_WITH_POLYMORPHICZ_polymorphic_adaptersr   )
r]   rf   rc   Ztarget_attributesre   rg   r  Zroot_mapperr7   r  r:   r:   r;   r    sP   


z*JoinedLoader._init_user_defined_eager_procc                 C  sV   | |}|r|r||}||jd| n|r#|}||jd| |j}|||fS )Nr  )Z_get_entity_clauseswrapr   r
   primary_columns)r]   rm   r   re   rg   r  r  r:   r:   r;   r  	  s"   


z1JoinedLoader._setup_query_on_user_defined_adapterc	                 C  s  | |jdd }	|	r|	}
n"t| j}|jr|j}nd }tj| j|d ur)|j	ddnd ddd}
t|
}|j
d| ftjtjj|| jjdddd}|jsLJ |d urY|j d| jjn| jj}|sad}|j| j||||||||rr|jnd	f	 |j}||jd
| ||||fS )Nr  T)flat)r  r  r|  Zjoinedloader_ormadapterF)r   Zadapt_requiredZallow_label_resolveZanonymize_labels	innerjoinr:   eager_row_processor)rJ   r
   r(   r   r   r  r3   r%   rN   Z_anonymous_fromclauseZ_memor  r  ZJOINEDLOAD_MEMOIZED_ADAPTERr   r   r[   r  Zcreate_eager_joinsrF   _create_eager_joinr   r  r   )r]   rc   r   re   rf   rg   rh   r  r  r  Zto_adaptZinspZalt_selectableZto_adapt_inspr  r  r  r:   r:   r;   r  )	  sd   

z"JoinedLoader._generate_row_adapterc
              	     sP  |d u r|j }
n|}
|jo|j}d }||jvr?|s?|jr?t|j|j}t|dkr/t	
d|r?|j|d  }|d |}}|d u rI||j}}|j||}|rt|ddrq|j|
 jrc|
n j}t|j j j}nttj j|jdd j j}n j}|jsJ | p| p|dkp|jj}|	}|jd	 j fd
}|r|t fdd|D 7 }|rtj||j|| p|jjp|ot|tj j| j  |d}n  ||d ||||}||j|< |j|_!|st" jj#D ]}|
j$j%&|r|r|j'| }|(||j) q jj*r&| j+t|j,-t./ jj*7  _+d S d S )Nr	   zCan't identify which query entity in which to joined eager load from.   Please use an exact match when specifying the join path.r   r   FTr{  Zunnestedadditional_entity_criteriar:   c                 3  s"    | ]}|j r| jV  qd S r2   )Zpropagate_to_loadersZ_resolve_where_criteriarN   )r   Zaer   r:   r;   r   	  s    

z2JoinedLoader._create_eager_join.<locals>.<genexpr>isouter
_left_memo_right_memor   r  )0rN   r  Z_should_nest_selectableZeager_joinsZfrom_clausesr   Z#find_left_clause_that_matches_givenr  r5  r   r   
setdefaultrj  aliased_inspZ_entity_for_mapperrm  rH   r   r4   r[   r3   r%   r   ro  Zrepresents_outer_joinZglobal_attributesrJ   r  _ORMJoinr   r*   ZJoin_splice_nested_inner_joinZstop_onZ_find_columnsZprimaryjoinZpersist_selectablerj   Zcontains_columnrW   rb   r  r   r  _target_adapterZcopy_and_processr   r   )r]   rc   rd   re   rg   r  r  r  r  r  r   Zshould_nest_selectableZquery_entity_keyZindexesZclauseZdefault_towrapZtowrapZefmonclauseZattach_on_outsideZextra_join_criteriar  	eagerjoinr   r:   r   r;   r  x	  s   


	





zJoinedLoader._create_eager_joinentity_inside_join_structure#Union[Mapper, None, Literal[False]]detected_existing_path$Optional[path_registry.PathRegistry]c	              
   C  s  ||d u sJ |du rt |tjsJ t |tjjr'| |||j||||S t |tjr|j}	| j|||j	||||	d urB|	d j
nd d}
|
d urj|jsV|
jsV||
}ntj|j|
|j|j|jd}|
j|_|S | j|||j||||j|	d}
|
d urtj|
|j	|j|j|jd}|
j|_|S |du r	J dd S ||sd S |rt|d	kr|d
 |u sJ |dd |jdd krd S tj||j|d|||d j
 |dS )Nr  FrE  )r   )r  r  )r   r  )r  r  z9assertion failed attempting to produce joined eager loadsr&   r   r  )r   r3   r  r*   r  ZFromGroupingr  elementr  rightrN   r  Z_splice_into_centerleftr  r  r  rm  r5  re   r  )r]   re   Zentity_we_want_to_splice_ontoZjoin_objr  r  r  r   r  Zjoin_right_pathZtarget_joinr  r:   r:   r;   r  
  s   	

$z&JoinedLoader._splice_nested_inner_joinc           	      C  s   |j }|r| |||jnd}|dur(|}|jr!|r!||j}n|jr'|j}n||jd}|d u r5dS | j||r>|S dS )NFr  )rc   r  r
   Zcompound_eager_adapterr  rJ   rN   Z_result_has_identity_key)	r]   rm   rn   rg   re   rf   rc   r  	decoratorr:   r:   r;   _create_eager_adapter
  s0   
z"JoinedLoader._create_eager_adapterc	              
   C  s   |j jjsd S | jj| j jjst	d|  | j
rd|_|| j }	| ||||	|}
|
durW| j}t|| j|||	| j |
}| j
sM| |||| d S | |||| d S | jd|||||||| d S )Nr  TFrX  )rc   r   r[  rH   rK   r4   r  r  r   r   r>   Zloaders_require_uniquingr[   r	  r   Z_instance_processorrN   r   r  r  r   rp   )r]   rm   rd   re   rf   rN   rn   rg   ro   Zour_pathZeager_adapterr4   	_instancer:   r:   r;   rp   
  sT   


	z!JoinedLoader.create_row_processorc                   sv    fdd} fdd} fdd}|d  | j|f |d  | j|f jr9|d	  | j|f d S d S )
Nc                   sJ   t | |}t|d}|j | f<  |}|d ur#|| d S d S NZappend_without_eventr
   r   r   ZUniqueAppenderrF   )r   r   r   r  result_listinstr
  rm   r4   r:   r;   #load_collection_from_joined_new_row'  s   zSJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_new_rowc                   sh   | fj v rj | f }nt | |}t|d}|j | f<  |}|d ur2|| d S d S r  r  )r   r   r   r  r  r  r  r:   r;   (load_collection_from_joined_existing_row4  s   zXJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_existing_rowc                       | d S r2   r:   r   r
  r:   r;    load_collection_from_joined_execG     zPJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_execr   r  r  rF   r4   r  )r]   rm   r4   r
  ro   r  r  r  r:   r  r;   r  &  s   z&JoinedLoader._create_collection_loaderc                   st    fdd} fdd} fdd}|d  j|f |d  j|f |jr8|d	  j|f d S d S )
Nc                   s    ||< d S r2   r:   r   )r
  r4   r:   r;   load_scalar_from_joined_new_rowV  s   zKJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_new_rowc                   s>    |}|v r|| urt d  d S d S ||< d S )Nr  )r   r6  )r   r   r   r  r
  r4   r]   r:   r;   $load_scalar_from_joined_existing_row[  s   
zPJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_existing_rowc                   r  r2   r:   r   r  r:   r;   load_scalar_from_joined_execn  r  zHJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_execr   r  r  r  )r]   rm   r4   r
  ro   r  r  r  r:   r  r;   r  U  s   z"JoinedLoader._create_scalar_loader)NNF)FN)r   r  r  r  )rq   rr   rs   rt   ru   rZ   r   rk   r  r  r  r  r  r	  rp   r  r  rv   r:   r:   r_   r;   r  C  s.    
 9O * .$>/r  Zselectinc                      st   e Zd ZdZedg dZdZ fddZdd Z	d	d
 Z
dd Zdd Zdd Zdd Zdd Zdd Z  ZS )SelectInLoader)rP  	omit_join_parent_alias_query_info_fallback_query_infoZ	queryinfo)load_only_childload_with_joinin_exprpk_colszero_idxchild_lookup_colsi  c                   s   t  || | jj| _| jjtju }| jjd ur| jj| _n| jd}|r,|j	| _n| j
jd j|jdd| j
jd| _| jrU|rN|  | _|  | _d S |  | _d S |  | _d S )NrX  r   TFr   )rY   rZ   r[   rP  rM   r   r   r  r   r   rH   r   r   r   r   _init_for_omit_join_m2or  _init_for_joinr  _init_for_omit_join)r]   rH   r^   Zis_m2ore  r_   r:   r;   rZ     s,   


zSelectInLoader.__init__c                   s   t jjj   fddt D   fddjjD  }}t|dkr1t	j
| }d}n|d }d}dd|||d S )	Nc                 3  s2    | ]}j j|d D ]	}| | fV  qqdS )r:   N)rH   r   rJ   )r   r   equivpk_to_fkr]   r:   r;   r     s    
z5SelectInLoader._init_for_omit_join.<locals>.<genexpr>c                   s   g | ]
}| v r | qS r:   r:   r   r   )r+  r:   r;   r     s    z6SelectInLoader._init_for_omit_join.<locals>.<listcomp>r	   Fr   T)r  r[   r   Zlocal_remote_pairsr  r   rH   r   r5  r*   tuple_
query_info)r]   r#  Zfk_colsr"  r$  r:   r*  r;   r(    s   


z"SelectInLoader._init_for_omit_joinc                   sb   | j j}t|dkrtj| }d}n|d }d}| jd  fdd|D }| dd||||S )Nr	   Fr   TrX  c                   r  r:   r  r  re  r:   r;   r     r   z:SelectInLoader._init_for_omit_join_m2o.<locals>.<listcomp>)rN   r   r5  r*   r-  r[   r   r.  )r]   r#  r"  r$  Zlookup_colsr:   r/  r;   r&    s   
z&SelectInLoader._init_for_omit_join_m2oc                   sj   t | jj| _t| j  fdd| jjD }t|dkr%tj| }d}n|d }d}| 	dd|||d S )Nc                      g | ]}  |qS r:   _adapt_elementr,  Zpa_inspr:   r;   r         
z1SelectInLoader._init_for_join.<locals>.<listcomp>r	   Fr   T)
r%   rH   rL   r  r(   r   r5  r*   r-  r.  )r]   r#  r"  r$  r:   r3  r;   r'    s   


zSelectInLoader._init_for_joinc                 C  rV  rW  rY  r   r:   r:   r;   r     rZ  z#SelectInLoader.init_class_attributec	                 C  s  |j r| ||||||||S | j|||| jd\}	}
}}|
s!d S |jjjs(d S | jj| j	 j
js8td|  t|dkrIt|j| jsHd S nt|d | jsTd S |	}|| j }||jdd }|d urlt|}n| j}tj||| j| j| j||||	 d S )NrT  r  r	   rE  r  )r   r   rR  rP  rc   r   r[  rH   rK   r4   r  r  r   r   r5  r3   r  ro  r[   rJ   r
   r(   r   r   rL  r\  r]  )r]   rm   rd   re   rf   rN   rn   rg   ro   r8  r^  r  rD  Zselectin_pathrQ  r  r  r:   r:   r;   rp     sl   

	

z#SelectInLoader.create_row_processorc	                   s  |r	j |vr	d S j}	|	jrRtt}
g }j|D ]6\}jtfdd|	j	D }t
j|v r:j}	 nd |vrI|
| |f q||f q|	js\dd |D }
|	j}|	j}|	jsvjrvfdd|D }|}tjdg|R  }| } }tj||gttjddd	}|	js|}n|jtjjj  }|!|"t#$d
} j%j&}|j }| j'u r|j(}n|j(} j'j(} fddt)||D }|r|j*r|t+|, f7 }|d ur|- }|j.| }|/d|i} j0r|j1dd}jj2r=|	js0jj2}jr*fdd|D }|j2| }nfdd}|3|j}|	jrM4|
||	| | d S 5|
|	| | d S )Nc                 3  s$    | ]} j |tjd V  qdS )r  N)r  r
   ZPASSIVE_NO_FETCH)r   Zlk)rN   r   
state_dictr:   r;   r   S  s    
z0SelectInLoader._load_for_path.<locals>.<genexpr>c                 S  s$   g | ]\}}|j d  ||j|fqS )r	   )r4   r  )r   r   rf  r:   r:   r;   r   p  s    z1SelectInLoader._load_for_path.<locals>.<listcomp>c                   r0  r:   r1  r,  r  r:   r;   r     r4  r  r  )Zcompile_state_pluginZplugin_subject)r  r  r   r  primary_keysc                   s   g | ]
\}}|  |qS r:   )Z'_adapt_cached_option_to_uncached_option)r   Zorig_optZuncached_opt)rm   r:   r;   r     s    r  T)r?  c                   r0  r:   r1  r   r6  r:   r;   r     s    c                   r  r2   r  r  r   r:   r;   r    r  z?SelectInLoader._load_for_path.<locals>._setup_outermost_orderby)6r4   r  r   r  r  r   rH   r  r  r%  r   r   r  rF   r#  r"  r!  r   r2  r3   ZBundler&  r-   r'  r,   r   r(  r)  r  r  rj  r[   r  filterin_r*   r   rc   Zselect_statementZuser_passed_queryr-  zipr   r,  r>  r`  r  Z_update_compile_optionsr?  r  r   r  _load_via_child_load_via_parent)r]   rm   re   rc  rd  r  rf   rD  r  r.  
our_statesnone_statesrf  Zrelated_identr#  r"  Z
bundle_entZ
bundle_sqlZ
entity_sqlr  r  r8  r  Zcached_optionsZuncached_optionsr  r  r:   )rm   r  rN   r]   r   r5  r;   r]  ;  s   








	


	
zSelectInLoader._load_for_pathc                   s   | j }t|}|r_|d| j }	|| jd  }dd |jj|d fdd|	D i|d D }
|	D ]*}|
|d }|| D ]\}}}|sK| j|v rKq>|| j	|||sW|n|g q>q2|s	|D ]\}}}|sn| j|v rnqa|| j	||d  qad S )Nr   c                 S  s   i | ]\}}||qS r:   r:   )r   r   r  r:   r:   r;   
<dictcomp>  s    z2SelectInLoader._load_via_child.<locals>.<dictcomp>r7  c                   s   g | ]} j r|d  n|qS ri  r$  )r   r4   r.  r:   r;   r   #  ry  z2SelectInLoader._load_via_child.<locals>.<listcomp>r   r  )
r>   sorted
_chunksizer   r3  r   rJ   r4   ra  rb  )r]   r=  r>  r.  r  rm   r  r>   Zour_keyschunkdatar4   Zrelated_objr   r   rf  r:   rA  r;   r;    sB   		"zSelectInLoader._load_via_childc                   s$  | j }|rdnd }|r|d| j }|| jd  } fdd|D }	tt}
t|jj|d|	i|d	 dd D ]\}}|
| 
d	d
 |D  q:|D ]>\}}}}|s[| j|v r[qM|
||}|s|rt|dkrrtd|   || j|||d  qM|| j||| qM|sd S d S )Nr:   r   c                   s&   g | ]\}}}} j r|d  n|qS ri  r@  )r   r4   r   r5  rf  rA  r:   r;   r   O  s    
z3SelectInLoader._load_via_parent.<locals>.<listcomp>r7  rB  c                 S  s   | d S r{   r:   r  r:   r:   r;   r<   [  s    z1SelectInLoader._load_via_parent.<locals>.<lambda>c                 s  r  )r	   Nr:   r  r:   r:   r;   r   ]  r  z2SelectInLoader._load_via_parent.<locals>.<genexpr>r	   r  )r>   rD  r  r  r   r  r  r   r3  r   r  r4   rJ   r5  r   r6  ra  rb  )r]   r=  r.  r  rm   r  r>   Z_empty_resultrE  r7  rF  r   r  r4   r   r5  rf  r  r:   rA  r;   r<  E  sJ   


zSelectInLoader._load_via_parent)rq   rr   rs   ru   r  
namedtupler.  rD  rZ   r(  r&  r'  r   rp   r]  r;  r<  rv   r:   r:   r_   r;   r  {  s"    P T7r  c                   sT   fdd  fdd} fdd}t j| d|dddd	 t j| d
|dddd	 d S )Nc                   sT   |d ur(|j  j kr(|t|}|r(||ur(tjdt|| j f dd|S )NzsInstance %s is already associated with an instance of %s via its %s attribute, and is only allowed a single parent.Zbbf1)code)	r4   	hasparentr
   Zinstance_stater   r   r3   Zinstance_strrL   )r   r   oldvalue	initiatorrI  )r7   r:   r;   	_do_checkx  s   z*single_parent_validator.<locals>._do_checkc                   s    | |d |S r2   r:   )r   r   rK  rL  r:   r;   rF        z'single_parent_validator.<locals>.appendc                   s    | |||S r2   r:   )r   r   rJ  rK  rM  r:   r;   set_  rN  z%single_parent_validator.<locals>.set_rF   T)rawretvalrC   r   )r'   listen)r6   r7   rF   rO  r:   )rL  r7   r;   rG   w  s   rG   )NNNNFN)Wrt   
__future__r   r  r  typingr   r   r   r   r   r    r
   r   r   r   r   r   r   r   r   r   r   r3   baser   r   r   r   r   r   r   rm   r   r   r   r   r   r    r   r!   r   r"   r$  r#   r$   r%   r'   r   r(   r)   r*   r   r+   Zsql.selectabler,   r-   Zutil.typingr.   rN   r/   r0   Zsql.elementsr1   rR   ZColumnPropertyZstrategy_forrU   Zclass_loggerrw   r   r   r   r   r   r   ZMemoizedSlotsZ
Identifiedr   r=  rC  rS  rh  r  r  rG   r:   r:   r:   r;   <module>   s   	
Q+ZW 0%
&

    24Lc           ;   }