o
    !Zh                    @  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$lm-Z- d%d&l
m.Z. d%d
l
mZ/ d%d'l
m0Z0 d%d(l
m1Z1 d%d)l
m2Z2 d%dl
mZ d%dl2mZ3 d%d*l2m4Z4 d%d+l5m6Z6 d%d,l5m7Z7 e	rdd-lm8Z8 d%d.l9m:Z: 					/	dbd0d1Z;ej<j=d/d/d2G d3d4 d4e$Z>e1j?ej<j=d5d/d2G d6d7 d7e$Z@e1j?ej<j=d5d8G d9d: d:e@ZAe1j?ej<j=d5d5d;ej<j=d5d5d5d<ej<j=d5d=G d>d? d?e$ZBG d@dA dAZCG dBdC dCe$ZDe1j?ej8j=d5d=G dDdE dEe$ZEe1j?ej8j=dFdGej8j=ddGG dHdI dIeDZFe1j?ej8j=d5dGej8j=dJdGej8j=dKdGej8j=dLdGej8j=dMdGG dNdO dOeDejGe1jHZIG dPdQ dQZJG dRdS dSeDZKej8j=dTdGG dUdV dVeKZLe1j?ej8j=dWdGG dXdY dYeKZMe1j?ej8j=dZdGej8j=d/dGG d[d\ d\eDZNe1j?ej8j=d]dGG d^d_ d_eKejGZOd`da ZPdS )czWsqlalchemy.orm.interfaces.LoaderStrategy
   implementations, and related MapperOptions.    )annotationsN)Any)Dict)Tuple)TYPE_CHECKING   )
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_set)AliasedClass   )event)inspect)log)sql)visitors)LABEL_STYLE_TABLENAME_PLUS_COL)Select)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 P/var/www/html/lang_env/lib/python3.10/site-packages/sqlalchemy/orm/strategies.py<lambda>X   s
    z%_register_attribute.<locals>.<lambda>c                   s   t |  S r.   )r   Zbackref_listenersr1   )backrefuselistr6   r7   r8   f   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_validatorr0   parent
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viewonlyrA   )r3   mapperr<   r;   r=   r>   Zproxy_propertyr?   r@   kwZlisten_hooksmr2   hookr6   )r9   r4   r5   r:   r7   _register_attributeB   s^   





rO   )
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 r.   )super__init__parent_propertyrT   selfrD   strategy_key	__class__r6   r7   rW         z#UninstrumentedColumnLoader.__init__Nc           	      K  s*   | j D ]}|r|j | }||| qd S r.   )rT   _append_dedupe_col_collection)	rZ   compile_statequery_entitypathloadoptadaptercolumn_collectionkwargscr6   r6   r7   setup_query   s
   


z&UninstrumentedColumnLoader.setup_queryc	           	      C  s   d S r.   r6   	rZ   contextra   rb   rc   rK   resultrd   
populatorsr6   r6   r7   create_row_processor   s   z/UninstrumentedColumnLoader.create_row_processorr.   )	__name__
__module____qualname____doc__	__slots__rW   rh   rm   __classcell__r6   r6   r\   r7   rR      s    
rR   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`.)rT   is_compositec                   s*   t  || | jj| _t| jd| _d S )Ncomposite_class)rV   rW   rX   rT   hasattrru   rY   r\   r6   r7   rW      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   )rT   Zadapt_check_presentr_   rX   )rZ   r`   ra   rb   rc   rd   re   memoized_populatorsZcheck_for_adaptrf   rg   fetchr6   r6   r7   rh      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;   r?   )is_class_levelrT   typerX   r?   primary_keyZversion_id_col_columntopropertyrG   rO   compare_values)rZ   rK   Zcoltyper?   r6   r6   r7   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)rT   _getterrB   r0   )rZ   rj   ra   rb   rc   rK   rk   rd   rl   colgetterr6   r6   r7   rm     s   

z!ColumnLoader.create_row_processorF)
rn   ro   rp   rq   rr   rW   rh   r   rm   rs   r6   r6   r\   r7   rt      s    
!rt   )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 r.   )compare.0rg   nullr6   r7   	<genexpr>%  s    
z2ExpressionColumnLoader.__init__.<locals>.<genexpr>)	rV   rW   r(   r   labelanyrX   rT   _have_default_expressionrY   r\   r   r7   rW     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 rx   )_extra_criteriar   rX   rT   r_   )rZ   r`   ra   rb   rc   rd   re   ry   rf   rT   rg   rz   r6   r6   r7   rh   )  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   rT   r   rB   r0   )rZ   rj   ra   rb   rc   rK   rk   rd   rl   rT   r   r   r6   r6   r7   rm   N  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{   rO   rX   rT   r|   r   rZ   rK   r6   r6   r7   r   h  s   
z+ExpressionColumnLoader.init_class_attribute)rn   ro   rp   rW   rh   rm   r   rs   r6   r6   r\   r7   r     s
    %r   )rQ   rP   )rQ   rP   	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`.)rT   groupr   c                   sJ   t  || t| jdrtd| jdd| _| jj| _| jj	| _	d S )Nrv   z8Deferred loading for composite types not implemented yetr   F)
rV   rW   rw   rX   NotImplementedErrorstrategy_optsrG   r   rT   r   rY   r\   r6   r7   rW     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)rQ   FrP   Tnewr   F)refresh_stater   _compile_options_only_load_propsr0   rX   _get_strategyrm   r{   r   Z_raise_column_loaderZ_deferred_column_loaderrB   )
rZ   rj   ra   rb   rc   rK   rk   rd   rl   Zset_deferred_for_local_stater6   r6   r7   rm     s4   z)DeferredColumnLoader.create_row_processorc                 C  s,   d| _ t| j|d| jd jj| jdd d S )NTFr   )r<   r;   r>   Zload_on_unexpire)r{   rO   rX   rT   r|   r   _load_for_stater   r6   r6   r7   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_subqueryrX   Z_renders_in_subqueriessetrT   intersectionrD   Z_should_undefer_in_wildcardr   
local_optsrG   r0   r   rh   r{   r   r   r   r   )
rZ   r`   ra   rb   rc   rd   re   ry   Zonly_load_propsrL   r6   r6   r7   rh     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 r6   )
isinstancer   strategyr   r   r0   )r   prZ   r6   r7   
<listcomp>  s    
z8DeferredColumnLoader._load_for_state.<locals>.<listcomp>c                   s   g | ]	}| j v r|qS r6   )Z
unmodified)r   k)stater6   r7   r     s    zfParent instance %s is not bound to a Session; deferred load operation of attribute '%s' cannot proceedraise)r0   r   
ATTR_EMPTYr   SQL_OKPASSIVE_NO_RESULTmanagerrK   r   Ziterate_propertiesr   orm_excDetachedInstanceErrorr/   	state_strr   _invoke_raise_loadr   Zload_scalar_attributesr   r   r   )rZ   r   passivelocalparentZtoloadr   sessionr6   )rZ   r   r7   r     s0   

z$DeferredColumnLoader._load_for_statec                 C  s   t d| f )Nz+'%s' is not available due to raiseload=Truesa_excInvalidRequestErrorrZ   r   r   lazyr6   r6   r7   r   #  s   z'DeferredColumnLoader._invoke_raise_loadr.   )rn   ro   rp   rq   rr   rW   rm   r   rh   r   r   rs   r6   r6   r\   r7   r   t  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 DeferredColumnLoaderFr0   strr   boolc                 C  s   || _ || _d S r.   )r0   r   )rZ   r0   r   r6   r6   r7   rW   ,  s   
zLoadDeferredColumns.__init__c                 C  s>   | j }|jj}|j| }| jrd}nd}||}|||S )N)rQ   Tr   )r   T)r   r   )r0   r   rK   rF   r   r   r   )rZ   r   r   r0   r   r3   r[   r   r6   r6   r7   __call__0  s   

zLoadDeferredColumns.__call__Nr   )r0   r   r   r   )rn   ro   rp   rq   rW   r   r   r   r6   r6   r6   r7   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.)rK   targetr:   entityc                   s:   t  || | jj| _| jj| _| jj| _| jj| _d S r.   )rV   rW   rX   rK   r   r   r:   rY   r\   r6   r7   rW   F  s
   


z#AbstractRelationshipLoader.__init__c	           	   
   C  s    | j d||||||||S )N))r   	immediate)rX   r   rm   ri   r6   r6   r7   #_immediateload_create_row_processorM  s   z>AbstractRelationshipLoader._immediateload_create_row_processor)rn   ro   rp   rq   rr   rW   r   rs   r6   r6   r\   r7   r   A  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)rn   ro   rp   rq   r6   r6   r6   r7   r   f  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".

    r6   c                 C  s    d| _ t| j|d| jjd d S )NT)r<   r=   )r{   rO   rX   collection_classr   r6   r6   r7   r   }  s   
zNoLoader.init_class_attributec	           
        s$    fdd}	|d   j|	f d S )Nc                   s(    j rt| | j d S d | j< d S r.   )r:   r   init_state_collectionr0   r   dict_rowr   r6   r7   invoke_no_load  s   z5NoLoader.create_row_processor.<locals>.invoke_no_loadr   )rB   r0   )
rZ   rj   ra   rb   rc   rK   rk   rd   rl   r   r6   r   r7   rm     s   zNoLoader.create_row_processorN)rn   ro   rp   rq   rr   r   rm   r6   r6   r6   r7   r   r  s
    
r   selectr   raise_on_sqlZbaked_selectc                      s   e Zd ZU dZdZded< ded< ded< ded< d	ed
< d# fddZdd Zdd Zdd Z	dd Z
ddddejfddZdd Zeddd  Zd!d" Z  ZS )$
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]rX   rD   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   elemr6   r6   r7   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)rV   rW   r   r   r   r&   r   r   rX   _join_conditionZcreate_lazy_clauser   r   r   r   r   r   order_byr   to_listr   loggerinfor:   _get_clauser   rK   _equivalent_columnsr   list)rZ   rD   r[   Zjoin_conditionr   rg   r\   r6   r7   rW     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<   r>   r=   r?   _deferred_history)r{   rX   _legacy_inactive_history_styler?   rJ   r
   	MANYTOONEr   rO   r   r   )rZ   rK   r   r?   r   r6   r6   r7   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	bindparamr6   r6   r7   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 r.   )Z_identifying_keyrB   r0   callablevaluer   Zbind_to_colparamsr6   r7   r   ,  s   

)r   r   r   r   r)   traverseZcloned_traverse)rZ   Z	lazywhere	criterionr   r6   r   r7   "_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 r6   r6   )r   r0   identr   r6   r6   r7   r   C      z4LazyLoader._generate_lazy_clause.<locals>.<listcomp>)r   r   Zadapt_criterion_to_nullrX   rD   objr   instance_dictr   ZINIT_OKLOAD_AGAINST_COMMITTED#_get_committed_state_attr_by_column_get_state_attr_by_column)rZ   r   r   r   Z
param_keysrK   or   r   r0   r   r   r6   r6   r7   _generate_lazy_clause>  s,   




z LazyLoader._generate_lazy_clausec                 C  s   t d| |f )Nz&'%s' is not available due to lazy='%s'r   r   r6   r6   r7   r   ^  s   
zLazyLoader._invoke_raise_loadNr6   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 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)"r0   rX   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   r/   r   _get_ident_for_use_getZ	NEVER_SETr"   
issupersetdictDEFERRED_HISTORY_LOADr   Z_identity_lookupr   ZPASSIVE_CLASS_MISMATCH_emit_lazyload)rZ   r   r   rc   extra_criteriaextra_optionsalternate_effective_pathexecution_optionspendingprimary_key_identityr   r   instancer6   r6   r7   r   c  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   rZ   r   r6   r7   r     s    z5LazyLoader._get_ident_for_use_get.<locals>.<listcomp>)r   rK   r   r   r  r  r  r}   )rZ   r   r   r   instance_mapperr6   r  r7   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 r.   )rX   Z_reverse_propertyrJ   r
   r   Z_use_getr   r   r   r!   Z_construct_for_existing_pathr   r  rD   ZlazyloadZprocess_compile_state)compile_contextrevrZ   strategy_optionsr6   r7   _lazyload_reverse7  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_optionsrX   Z	secondaryselect_fromrK   r0   r   ZNO_AUTOFLUSHimmutabledict_execution_optionsr   r  r   Z	load_pathr/   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_intersectionr"   valuesZ
_never_setZ_where_criteriaexecuter   Zscalarsallr:   lenwarn)rZ   r   r   r  r   rc   r  r  r  r  Zclauseelementstmtr  r  r   effective_pathr5   r"  Zlazy_clauser   rk   lr6   r   r7   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 r.   )_resetr   r0   r6   r7   reset_for_lazy_callable  s   	z@LazyLoader.create_row_processor.<locals>.reset_for_lazy_callable)r0   r  Z_is_user_refreshr   r   r   r   r{   r   r    Z"_instance_level_callable_processorrH   LoadLazyAttribute_generate_extra_criteriarB   populate_existingZalways_refresh)rZ   rj   ra   rb   rc   rK   rk   rd   rl   Zset_lazy_callabler9  r6   r8  r7   rm     sF   

zLazyLoader.create_row_processor)rD   r   r[   r   )rn   ro   rp   rq   rr   __annotations__rW   r   r   r  r   r   r-  r   r  Zpreload_moduler
  rm   rs   r6   r6   r\   r7   r     s0   
 	<"  	
p
 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 r.   r0   r[   rc   r  )rZ   r0   Zinitiating_strategyrc   r  r6   r6   r7   rW     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 caser6   r>  )r  r   r3  r0   r[   rc   r   r6   r6   r7   __getstate__  s   
zLoadLazyAttribute.__getstate__c                 C  s:   | j }|jj}|j| }|j| j }|j||| j| jdS )N)rc   r  )	r0   r   rK   rF   Z_strategiesr[   r   rc   r  )rZ   r   r   r0   r  r3   r   r6   r6   r7   r     s   
zLoadLazyAttribute.__call__N)	rn   ro   rp   rq   rW   r?  r   r   r   r6   r6   r6   r7   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.r6   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$   T)r`   current_pathr/   PathRegistryrootZ_get_top_level_contextr   r'  r   rG   rX   Z_is_self_referentialr   r   r  idunionr   PostLoadZpath_existscontainsr   lengthcontains_mapperrK   )rZ   rj   rb   rc   
join_depthr5  Ztop_level_contextr  rA  Zunlimited_recursionpath_w_propZeffective_path_w_propr6   r6   r7   _setup_for_recursion  sn   


zPostLoader._setup_for_recursionr.   )rn   ro   rp   rq   rr   rO  r6   r6   r6   r7   r@    s    r@  r   c                      s8   e Zd ZdZ fddZdd Zdd Zdd	 Z  ZS )
ImmediateLoaderrM  c                   rU   r.   rV   rW   rX   rM  rY   r\   r6   r7   rW   L  r^   zImmediateLoader.__init__c                 C     | j d| d S N)r   r   rX   r   r   r   r6   r6   r7   r   P     z$ImmediateLoader.init_class_attributec	                 C  s^   |  |||| j\}	}
}}|
stjtjB }ntjtjB }tj	||	| j
| j| j||||	 d S r.   )rO  rM  r   ZPASSIVE_NO_FETCH_RELATEDr   r  r   r   rI  callable_for_pathrD   rX   _load_for_path)rZ   rj   ra   rb   rc   rK   rk   rd   rl   r5  
run_loaderr  rA  flagsr6   r6   r7   rm   U  s(   z$ImmediateLoader.create_row_processorc	                 C  s   |rt |jj}	|| f|	_| }
|	f}nd }	|}
d}| j}| jd}|D ](\}}|j	}|s5||vrP|j
||||
|d}|ttjfvrP||||| q(d S )Nr6   rU  )r  r  r  )r!   rb   r   Z_recurserj   _truncate_recursiver0   rX   r   r  r   r   r   r   get_implset_committed_value)rZ   rj   rb   states	load_onlyrc   r[  rA  r  Znew_optr  r  r0   
lazyloaderr   	overwriter   r   r6   r6   r7   rY  {  s>   
zImmediateLoader._load_for_path)	rn   ro   rp   rr   rW   r   rm   rY  rs   r6   r6   r\   r7   rP  H  s    &rP  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 )SubqueryLoaderrQ  c                   rU   r.   rR  rY   r\   r6   r7   rW     r^   zSubqueryLoader.__init__c                 C  rS  rT  rV  r   r6   r6   r7   r     rW  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   )getattrrb   r   r~   r0   r   leftmost_mapperZnew_subq_pathr6   r7   r     s    

z0SubqueryLoader._get_leftmost.<locals>.<listcomp>)rb   r/   Z_class_to_mapperrD   isarX   	_entitiesentity_zeror+  r2  r   rE  Zcoercelocal_columns)rZ   orig_query_entity_index	subq_pathZcurrent_compile_stateis_rootZgiven_subq_pathZsubq_mapperZleftmost_prop
additionalZleftmost_colsleftmost_attrr6   rg  r7   _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   Nr6   )r   Zentr6   r6   r7   	<setcomp>
  s
    z?SubqueryLoader._generate_from_original_query.<locals>.<setcomp>)r`   c                 S  s   g | ]}t jt jj|qS r6   )r(   Z	coercionsexpectZrolesZColumnsClauseRole)r   r  r6   r6   r7   r   !      z@SubqueryLoader._generate_from_original_query.<locals>.<listcomp>Tc                 S  s   h | ]}|j qS r6   )tabler   r6   r6   r7   rs  0  s    r6   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*   rc  r/   r#   )rZ   orig_compile_state
orig_queryrh  rq  leftmost_relationshipZorig_entityqq2Ztarget_colsr}  tZto_addZembed_q
left_aliasr6   r6   r7   _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$   rB  Trw  c                   s    g | ]}t  jj| jqS r6   )rf  rD   r~   r0   r   parent_aliasrZ   r6   r7   r   u  s    z2SubqueryLoader._prep_for_joins.<locals>.<listcomp>)r   pairs	enumeraterK   ri  rB   r0   r2  r&   r   r   r/   r#   rX   rl  )rZ   r  rn  to_joinr  irK   r3   Zprev_mapperZ	to_appendr   
local_cols
local_attrr6   r  r7   _prep_for_joinsL  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$   rB  c                 S  s:   g | ]}t |d  jst|d  n|d  j|d fqS )r   r   )r&   r   r/   r#   r   )r   itemr6   r6   r7   r     s    	z/SubqueryLoader._apply_joins.<locals>.<listcomp>)r2  rf  of_typepoprB   rD   join)rZ   r  r  r  r  effective_entityZltjmiddleinnerr  attrr6   r6   r7   _apply_joins{  sF   
	



zSubqueryLoader._apply_joinsc           	      C  sB   |j }|r|jr|t| j||f7 }||}|j| }|S r.   )r*  r   r/   r)  r   r;  Z_with_current_pathoptions)	rZ   rj   r  rn  rewritten_pathr  r  rc   new_optionsr6   r6   r7   _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 r.   eager_order_bytupler   r   rX   r   r  r   r6   r7   _setup_outermost_orderby     zISubqueryLoader._setup_outermost_orderby.<locals>._setup_outermost_orderby)rX   r   _add_context_option)rZ   r  r  r6   r   r7   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 r.   r  )rZ   rj   r  r6   r6   r7   rW     s   
z(SubqueryLoader._SubqCollections.__init__c                 C  s    | j d u r	|   | j ||S r.   )r  _loadrG   )rZ   r0   defaultr6   r6   r7   rG     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   r6   xr6   r6   r7   r8     s    z7SubqueryLoader._SubqCollections._load.<locals>.<lambda>c                 s      | ]}|d  V  qdS )r   Nr6   r   vvr6   r6   r7   r         z8SubqueryLoader._SubqCollections._load.<locals>.<genexpr>)collectionsdefaultdictr   r  r  r   Zwith_sessionr  Z_populate_existingr<  r   	itertoolsgroupbyextend)rZ   r  rowsr   vr6   r6   r7   r     s   z%SubqueryLoader._SubqCollections._loadc                 C  s   | j d u r|   d S d S r.   )r  r  )rZ   r   r   r   r6   r6   r7   rC    s   
z&SubqueryLoader._SubqCollections.loaderN)	rn   ro   rp   rq   rr   rW   rG   r  rC  r6   r6   r6   r7   _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)%r`   r   _enable_eagerloadsZ_for_refresh_staterj  indexZloaders_require_bufferingrX   rG   r   r   r   r(  r/   rE  rF  rd  r   Z_get_plugin_class_for_pluginZ_is_lambda_elementr  r  r   r3  Z	_resolvedZ_create_entities_collectionrr  r  ry  r.  r  Z_set_enable_single_critr  Zadd_columnsr  r  r  )rZ   rj   ra   rb   r   rc   rd   r`   rm  with_poly_entityr  rn  r  ro  r  Zcompile_state_clsr~  rh  rq  r  r  r  r  r  r  r6   r6   r7   _setup_query_from_rowproc  s   	

	






	z(SubqueryLoader._setup_query_from_rowprocc	              
     sf  |j r| |||||| |S | |||| j\}	}
}	}	|
s d S t|jts(d S | jj| j	 j
js8td|  t|dkrIt|j| jsHd S nt|d | jsTd S | ||||d | }|d u rfd S |jd u smJ || j }| jj}||jd}|d u r| ||}||jd|  r fdd|D }| jr| ||||| d S | ||||| d S )NJ'%s' does not support object population - eager loading cannot be applied.r   rB  r  c                      g | ]} j | qS r6   rS   r   rd   r6   r7   r     r   z7SubqueryLoader.create_row_processor.<locals>.<listcomp>)r   r   rO  rM  r   r`   r   rD   rH   r0   implsupports_populationr   r   r2  r/   _entity_isark  r  r   rX   rl  rG   r   r  r   r:   _create_collection_loader_create_scalar_loader)rZ   rj   ra   rb   rc   rK   rk   rd   rl   _rZ  r  r  r  r6   r  r7   rm     sp   
		


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 )Nr6   )rG   r]  r0   r^  )r   r   r   
collectionr  rZ   tuple_getterr6   r7   load_collection_from_subq  s   zKSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subqc                      j |vr | || d S d S r.   r8  r   )r  rZ   r6   r7   &load_collection_from_subq_existing_row     
zXSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subq_existing_rowr   existingeagerZ_tuple_getterrB   r0   invoke_all_eagersrC  )rZ   rj   rk   r  r  rl   r  r6   )r  r  rZ   r  r7   r    s   
z(SubqueryLoader._create_collection_loaderc                   r  )Nc                   sL     |d}t|dkrtd  |d }| j| || d S )Nr.   r   LMultiple rows returned with uselist=False for eagerly-loaded attribute '%s' r   )rG   r2  r   r3  r]  r0   r^  )r   r   r   r  Zscalarr  r6   r7   load_scalar_from_subq  s   zCSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subqc                   r  r.   r8  r   )r  rZ   r6   r7   "load_scalar_from_subq_existing_row  r  zPSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subq_existing_rowr   r  r  r  )rZ   rj   rk   r  r  rl   r  r6   )r  r  rZ   r  r7   r    s   
z$SubqueryLoader._create_scalar_loader)rn   ro   rp   rr   rW   r   rr  r  r  r  r  r  r  r  rm   r  r  rs   r6   r6   r\   r7   rd    s     1d/6"4 	Yrd  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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.

    rM  c                   rU   r.   rR  rY   r\   r6   r7   rW   4  r^   zJoinedLoader.__init__c                 C  rS  rT  rV  r   r6   r6   r7   r   8  rW  z!JoinedLoader.init_class_attributeNFc	                 K  sP  |j jsdS | jrd|_|| j }d}
|r| |||jnd}|dur0| |||||\}}}n0||jdsM| j	rE|j
d | j	krDdS n|| jrMdS | ||||||||\}}}}d|_||jdd}|durrt|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.NTFrC  r$   r  )with_polymorphicparentmapperchained_from_outerjoinzDetected unaliased columns when generating joined load.  Make sure to use aliased=True or flat=True when using joined loading with with_polymorphic().c                 S  s   g | ]}|d ur|qS r.   r6   r   r6   r6   r7   r     s    z,JoinedLoader.setup_query.<locals>.<listcomp>)r   r  r:   multi_row_eager_loadersrX   _init_user_defined_eager_procr   $_setup_query_on_user_defined_adapterrJ  rM  rK  rL  rK   _generate_row_adapterZeager_adding_joinsrG   r&   Zwith_polymorphic_mappersr   r   Z_setup_entity_queryr   ZNONE_SETr   secondary_columnsr   r   )rZ   r`   ra   rb   rc   rd   re   r  r  rf   r  user_defined_adapterclausesadd_to_collectionr  Z	has_nonesr6   r6   r7   rh   =  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   rb   rD   rG   r   r   r   r   aliasr/   
ORMAdapter_TraceAdaptRoleZJOINEDLOAD_USER_DEFINED_ALIASrK   r   rJ  Z JOINEDLOAD_PATH_WITH_POLYMORPHICZ_polymorphic_adaptersr   )
rZ   rc   r`   Ztarget_attributesrb   rd   r  Zroot_mapperr3   r  r6   r6   r7   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)rZ   rj   r   rb   rd   r  r  r6   r6   r7   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  rx  Zjoinedloader_ormadapterF)r   Zadapt_requiredZallow_label_resolveZanonymize_labels	innerjoinr6   eager_row_processor)rG   r   r&   r   r   r  r/   r#   rK   Z_anonymous_fromclauseZ_memor  r  ZJOINEDLOAD_MEMOIZED_ADAPTERr   r   rX   r  Zcreate_eager_joinsrB   _create_eager_joinr   r  r   )rZ   r`   r   rb   rc   rd   re   r  r  r  Zto_adaptZinspZalt_selectableZto_adapt_inspr  r  r  r6   r6   r7   r  	  sd   

z"JoinedLoader._generate_row_adapterc
              	     sD  |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	  |||||}||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   FTrw  Zunnestedadditional_entity_criteriar6   c                 3  s"    | ]}|j r| jV  qd S r.   )Zpropagate_to_loadersZ_resolve_where_criteriarK   )r   Zaer   r6   r7   r   	  s    

z2JoinedLoader._create_eager_join.<locals>.<genexpr>isouter
_left_memo_right_memor   )0rK   r  Z_should_nest_selectableZeager_joinsZfrom_clausesr   Z#find_left_clause_that_matches_givenr  r2  r   r   
setdefaultrf  aliased_inspZ_entity_for_mapperri  rD   r   r0   rX   r/   r#   r   rk  Zrepresents_outer_joinZglobal_attributesrG   r  _ORMJoinr   r(   ZJoin_splice_nested_inner_joinZstop_onZ_find_columnsZprimaryjoinZpersist_selectablerg   Zcontains_columnrT   r_   r  r   r  _target_adapterZcopy_and_processr   r   )rZ   r`   ra   rb   rd   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   r6   r   r7   r  U	  s   


	






zJoinedLoader._create_eager_joinc           
   	   C  s<  |du rt |tjsJ n1t |tjjr| ||j||||S t |tjs>|d |r<tj||j	|d||d j
|dS d S | ||j||||j}|d u rkd}| ||j||||j}|d u rj|dushJ dd S nd}|r|js{|js{||}	ntj|j||j|j|jd}	ntj||j|j|j|jd}	|j|	_|	S )	NFr  rB  r  z9assertion failed attempting to produce joined eager loadsT)r  r  )r  r  )r   r/   r  r(   r  ZFromGroupingr  elementri  r  rK   rightr  leftr  r  Z_splice_into_centerr  r  )
rZ   rb   Zjoin_objr  r  r  ZsplicingZtarget_joinZright_splicer  r6   r6   r7   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  )r`   r  r   Zcompound_eager_adapterr  rG   rK   Z_result_has_identity_key)	rZ   rj   rk   rd   rb   rc   r`   r  	decoratorr6   r6   r7   _create_eager_adapterM
  s0   
z"JoinedLoader._create_eager_adapterc	              
   C  s   | j j| j jjstd|  | jrd|_|| j	 }	| 
||||	|}
|
durP| j}t|| j|||	| j |
}| jsF| |||| d S | |||| d S | j	d|||||||| d S )Nr  TFrU  )rD   rH   r0   r  r  r   r   r:   Zloaders_require_uniquingrX   r  r   Z_instance_processorrK   r   r  r  r   rm   )rZ   rj   ra   rb   rc   rK   rk   rd   rl   Zour_pathZeager_adapterr0   	_instancer6   r6   r7   rm   q
  sP   

	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UniqueAppenderrB   )r   r   r   r  result_listinstr  rj   r0   r6   r7   #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  r6   r7   (load_collection_from_joined_existing_row
  s   zXJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_existing_rowc                       | d S r.   r6   r   r  r6   r7    load_collection_from_joined_exec
     zPJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_execr   r  r  rB   r0   r  )rZ   rj   r0   r  rl   r  r  r	  r6   r  r7   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 r.   r6   r   )r  r0   r6   r7   load_scalar_from_joined_new_row
  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   r3  )r   r   r   r  r  r0   rZ   r6   r7   $load_scalar_from_joined_existing_row
  s   
zPJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_existing_rowc                   r  r.   r6   r   r  r6   r7   load_scalar_from_joined_exec
  r
  zHJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_execr   r  r  r  )rZ   rj   r0   r  rl   r  r  r  r6   r  r7   r  
  s   z"JoinedLoader._create_scalar_loader)NNFr   )rn   ro   rp   rq   rr   rW   r   rh   r  r  r  r  r  r  rm   r  r  rs   r6   r6   r\   r7   r  )  s(    
w9O !
Y$:/r  Zselectinc                      st   e Zd ZdZedg dZdZ fddZdd Z	d	d
 Z
dd Zdd Zdd Zdd Zdd Zdd Z  ZS )SelectInLoader)rM  	omit_join_parent_alias_query_info_fallback_query_infoZ	queryinfo)load_only_childload_with_joinin_exprpk_colszero_idxchild_lookup_colsi  c                   s   t  || | jj| _| jjtju }| jjd ur| jj| _n| jd}|r,|j	| _n| j
jd j|jdd| j
jd| _| jrU|rN|  | _|  | _d S |  | _d S |  | _d S )NrU  r   TFr   )rV   rW   rX   rM  rJ   r
   r   r  r   r   rD   r   r   r   r   _init_for_omit_join_m2or  _init_for_joinr  _init_for_omit_join)rZ   rD   r[   Zis_m2ora  r\   r6   r7   rW     s,   


zSelectInLoader.__init__c                   s   t jjj   fddt D   fddjjD  }}t|dkr1t	j
| }d}n|d }d}dd|||d S )	Nc                 3  s2    | ]}j j|d D ]	}| | fV  qqdS )r6   N)rD   r   rG   )r   r   equivpk_to_fkrZ   r6   r7   r   ;  s    
z5SelectInLoader._init_for_omit_join.<locals>.<genexpr>c                   s   g | ]
}| v r | qS r6   r6   r   r   )r   r6   r7   r   A  s    z6SelectInLoader._init_for_omit_join.<locals>.<listcomp>r   Fr   T)r  rX   r   Zlocal_remote_pairsr|  r   rD   r}   r2  r(   tuple_
query_info)rZ   r  Zfk_colsr  r  r6   r  r7   r  7  s   


z"SelectInLoader._init_for_omit_joinc                   sb   | j j}t|dkrtj| }d}n|d }d}| jd  fdd|D }| dd||||S )Nr   Fr   TrU  c                   r  r6   r  r  ra  r6   r7   r   W  r   z:SelectInLoader._init_for_omit_join_m2o.<locals>.<listcomp>)rK   r}   r2  r(   r"  rX   r   r#  )rZ   r  r  r  Zlookup_colsr6   r$  r7   r  M  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 r6   _adapt_elementr!  Zpa_inspr6   r7   r   `      
z1SelectInLoader._init_for_join.<locals>.<listcomp>r   Fr   T)
r#   rD   rI   r  r&   r}   r2  r(   r"  r#  )rZ   r  r  r  r6   r(  r7   r  ]  s   


zSelectInLoader._init_for_joinc                 C  rS  rT  rV  r   r6   r6   r7   r   k  rW  z#SelectInLoader.init_class_attributec	                 C  s   |j r| ||||||||S | j|||| jd\}	}
}}|
s!d S | jj| j jjs1t	
d|  t|dkrBt|j| jsAd S nt|d | jsMd S |	}|| j }||jdd }|d uret|}n| j}tj||| j| j| j||||	 d S )NrQ  r  r   rB  r  )r   r   rO  rM  rD   rH   r0   r  r  r   r   r2  r/   r  rk  rX   rG   r   r&   r   r   rI  rX  rY  )rZ   rj   ra   rb   rc   rK   rk   rd   rl   r5  rZ  r  rA  Zselectin_pathrN  r  r  r6   r6   r7   rm   p  sh   
	

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)rK   r   
state_dictr6   r7   r     s    
z0SelectInLoader._load_for_path.<locals>.<genexpr>c                 S  s$   g | ]\}}|j d  ||j|fqS )r   )r0   r  )r   r   rb  r6   r6   r7   r     s    z1SelectInLoader._load_for_path.<locals>.<listcomp>c                   r%  r6   r&  r!  r  r6   r7   r     r)  r  r  )Zcompile_state_pluginZplugin_subject)r  r  r   r  primary_keysc                   s   g | ]
\}}|  |qS r6   )Z'_adapt_cached_option_to_uncached_option)r   Zorig_optZuncached_opt)rj   r6   r7   r   T  s    r  T)r<  c                   r%  r6   r&  r   r+  r6   r7   r   r  s    c                   r  r.   r  r  r   r6   r7   r  y  r  z?SelectInLoader._load_for_path.<locals>._setup_outermost_orderby)6r0   r  r  r  r  r   rD   r  r  r  r   r   r  rB   r  r  r  r   r'  r/   ZBundler#  r+   r$  r*   r   r%  r&  r  r  rf  rX   r  filterin_r(   r   r`   Zselect_statementr   r*  zipr   r)  r;  r\  r  Z_update_compile_optionsr<  r  r   r  _load_via_child_load_via_parent)rZ   rj   rb   r_  r`  r  rc   rA  r  r#  
our_statesnone_statesrb  Zrelated_identr  r  Z
bundle_entZ
bundle_sqlZ
entity_sqlr  r  r5  r  Zcached_optionsZuncached_optionsr  r  r6   )rj   r  rK   rZ   r   r*  r7   rY    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 r6   r6   )r   r   r  r6   r6   r7   
<dictcomp>  s    z2SelectInLoader._load_via_child.<locals>.<dictcomp>r,  c                   s   g | ]} j r|d  n|qS re  r  )r   r0   r#  r6   r7   r     ru  z2SelectInLoader._load_via_child.<locals>.<listcomp>r   r  )
r:   sorted
_chunksizer   r0  r   rG   r0   r]  r^  )rZ   r2  r3  r#  r  rj   r  r:   Zour_keyschunkdatar0   Zrelated_objr   r   rb  r6   r6  r7   r0    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 )Nr6   r   c                   s&   g | ]\}}}} j r|d  n|qS re  r5  )r   r0   r   r*  rb  r6  r6   r7   r     s    
z3SelectInLoader._load_via_parent.<locals>.<listcomp>r,  r7  c                 S  s   | d S rx   r6   r  r6   r6   r7   r8     s    z1SelectInLoader._load_via_parent.<locals>.<lambda>c                 s  r  )r   Nr6   r  r6   r6   r7   r     r  z2SelectInLoader._load_via_parent.<locals>.<genexpr>r   r  )r:   r9  r  r  r   r  r  r   r0  r   r  r0   rG   r2  r   r3  r]  r^  )rZ   r2  r#  r  rj   r  r:   Z_empty_resultr:  r,  r;  r   r  r0   r   r*  rb  r  r6   r6  r7   r1    sJ   


zSelectInLoader._load_via_parent)rn   ro   rp   rr   r  
namedtupler#  r9  rW   r  r  r  r   rm   rY  r0  r1  rs   r6   r6   r\   r7   r     s"    M 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)	r0   	hasparentr   Zinstance_stater   r   r/   Zinstance_strrI   )r   r   oldvalue	initiatorr>  )r3   r6   r7   	_do_check  s   z*single_parent_validator.<locals>._do_checkc                   s    | |d |S r.   r6   )r   r   r@  rA  r6   r7   rB        z'single_parent_validator.<locals>.appendc                   s    | |||S r.   r6   )r   r   r?  r@  rB  r6   r7   set_
  rC  z%single_parent_validator.<locals>.set_rB   T)rawretvalr?   r   )r%   listen)r2   r3   rB   rD  r6   )rA  r3   r7   rC     s   rC   )NNNNFN)Qrq   
__future__r   r  r  typingr   r   r   r    r   r	   r   r
   r   r   r   r   r   r   r   r/   baser   r   r   r   r   r   r   rj   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+   r,   Zsql.elementsr-   rO   ZColumnPropertyZstrategy_forrR   Zclass_loggerrt   r   r   r   r   r   r   ZMemoizedSlotsZ
Identifiedr   r:  r@  rP  rd  r  r  rC   r6   r6   r6   r7   <module>   s   	
Q+ZW 0%
&

    +4L`          Y   z