o
    Rcu                    @   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, 					$	dWd%d&Z-ej.j/d$d$d'G d(d) d)eZ0e&j1ej.j/d*d$d'G d+d, d,eZ2e&j1ej.j/d*d-G d.d/ d/e2Z3e&j1ej.j/d*d*d0ej.j/d*d*d*d1ej.j/d*d2G d3d4 d4eZ4G d5d6 d6e5Z6G d7d8 d8eZ7e&j1ej8j/d*d2G d9d: d:eZ9e&j1ej8j/d;d<ej8j/dd<G d=d> d>e7Z:e&j1ej8j/d*d<ej8j/d?d<ej8j/d@d<ej8j/dAd<ej8j/dBd<G dCdD dDe7ej;Z<G dEdF dFe5Z=G dGdH dHe7Z>ej8j/dId<G dJdK dKe>Z?e&j1ej8j/dLd<G dMdN dNe>Z@e&j1ej8j/dOd<ej8j/d$d<G dPdQ dQe7ZAe&j1ej8j/dRd<G dSdT dTe>ej;ZBdUdV ZCdS )XzWsqlalchemy.orm.interfaces.LoaderStrategy
   implementations, and related MapperOptions.    )absolute_importN   )
attributes)exc)
interfaces)loading)path_registry)
properties)query)relationships)
unitofwork)util)_DEFER_FOR_STATE)_RAISE_FOR_STATE)_SET_DEFERRED_EXPIRED)_column_descriptions)ORMCompileState)ORMSelectCompileState)QueryContext)LoaderStrategy)StrategizedProperty)_state_session)InstanceState)	_none_set)aliased   )event)inspect)log)sql)visitors)LABEL_STYLE_TABLENAME_PLUS_COL)SelectFc	                    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 ;D:\Flask\env\Lib\site-packages\sqlalchemy/orm/strategies.py<lambda>I   s
    z%_register_attribute.<locals>.<lambda>c                    s   t |  S r#   )r   Zbackref_listenersr&   )backrefuselistr+   r,   r-   W   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_validatorr%   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viewonlyr6   )r(   mapperr1   r0   r2   r3   Zproxy_propertyr4   r5   kwZlisten_hooksmr'   hookr+   )r.   r)   r*   r/   r,   _register_attribute2   s^   





rC   )
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 t| || | jj| _d S r#   )superrF   __init__parent_propertyrH   selfr9   strategy_key	__class__r+   r,   rK         z#UninstrumentedColumnLoader.__init__Nc           	      K   s*   | j D ]}|r|j | }||| qd S r#   )rH   _append_dedupe_col_collection)	rN   compile_statequery_entitypathloadoptadaptercolumn_collectionkwargscr+   r+   r,   setup_query   s
   


z&UninstrumentedColumnLoader.setup_queryc	           	      C   s   d S r#   r+   	rN   contextrU   rV   rW   r?   resultrX   
populatorsr+   r+   r,   create_row_processor   s   z/UninstrumentedColumnLoader.create_row_processorr#   )	__name__
__module____qualname____doc__	__slots__rK   r\   ra   __classcell__r+   r+   rP   r,   rF      s    
rF   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`.)rH   is_compositec                    s.   t t| || | jj| _t| jd| _d S )Ncomposite_class)rJ   rh   rK   rL   rH   hasattrri   rM   rP   r+   r,   rK      s   
zColumnLoader.__init__Fc	                 K   sj   | j D ]}
|r|r||
}
|
d u r d S n|j |
 }
||
| q| j d }|r.|j | }||| j< d S Nr   )rH   Zadapt_check_presentrS   rL   )rN   rT   rU   rV   rW   rX   rY   memoized_populatorsZcheck_for_adaptrZ   r[   fetchr+   r+   r,   r\      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)r1   r0   r4   )is_class_levelrH   typerL   r4   primary_keyZversion_id_col_columntopropertyr;   rC   compare_values)rN   r?   Zcoltyper4   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 )NFquickexpireT)rH   _getterr7   r%   )rN   r^   rU   rV   rW   r?   r_   rX   r`   colgetterr+   r+   r,   ra      s   

z!ColumnLoader.create_row_processorF)
rb   rc   rd   re   rf   rK   r\   rt   ra   rg   r+   r+   rP   r,   rh      s    
rh   )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| || t d  t fdd| jjD | _	d S )Nc                 3   s    | ]	}|   V  qd S r#   )compare.0r[   nullr+   r,   	<genexpr>  s    
z2ExpressionColumnLoader.__init__.<locals>.<genexpr>)
rJ   r{   rK   r   r   labelanyrL   rH   _have_default_expressionrM   rP   r   r,   rK     s
   zExpressionColumnLoader.__init__c                 K   s   d }	|rd|j v r|j d g}	n| jr| jj}	|	d u rd S |	D ]}
|r(|j|
 }
||
| q|	d }|r:|j| }||| j< d S )N
expressionr   )
local_optsr   rL   rH   rS   )rN   rT   rU   rV   rW   rX   rY   rm   rZ   rH   r[   rn   r+   r+   r,   r\     s   

z"ExpressionColumnLoader.setup_queryc	                 C   s|   |r:d|j v r<|j d g}	|	D ]}
|r|j|
 }
||
d}|r-|d | j|f  d S q|d | jdf d S d S d S )Nr   Fru   rv   T)r   rH   rw   r7   r%   )rN   r^   rU   rV   rW   r?   r_   rX   r`   rH   rx   ry   r+   r+   r,   ra   4  s   
z+ExpressionColumnLoader.create_row_processorc                 C   s(   d| _ t| j|d| jd jjdd d S )NTFr   )r1   r0   Zaccepts_scalar_loader)ro   rC   rL   rH   rp   rs   rN   r?   r+   r+   r,   rt   N  s   
z+ExpressionColumnLoader.init_class_attribute)rb   rc   rd   rK   r\   ra   rt   rg   r+   r+   rP   r,   r{     s
    r{   )rE   rD   )rE   rD   	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`.)rH   groupr   c                    sN   t t| || t| jdrtd| jdd| _| jj	| _	| jj
| _
d S )Nrj   z8Deferred loading for composite types not implemented yetr   F)rJ   r   rK   rk   rL   NotImplementedErrorstrategy_optsr;   r   rH   r   rM   rP   r+   r,   rK   e  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)rE   FrD   Tnewrv   F)refresh_stater
   _compile_optionsZ_only_load_propsr%   rL   _get_strategyra   ro   r   Z_raise_column_loaderZ_deferred_column_loaderr7   )
rN   r^   rU   rV   rW   r?   r_   rX   r`   Zset_deferred_for_local_stater+   r+   r,   ra   o  s6   z)DeferredColumnLoader.create_row_processorc                 C   s,   d| _ t| j|d| jd jj| jdd d S )NTFr   )r1   r0   r3   Zload_on_unexpire)ro   rC   rL   rH   rp   rs   _load_for_stater   r+   r+   r,   rt     s   
z)DeferredColumnLoader.init_class_attributeNc	           
      K   s   |j jr| jjs/|rd|jv rt| j| jj	s/|r(| j
r(|jd| j
 ds/|rD| j|v rD| jdj|||||||fi |	 d S | jrNt|| j< d S | jsXt|| j< d S t|| j< d S )NZundefer_pkszundefer_group_%sFr   )compile_optionsZ_render_for_subqueryrL   Z_renders_in_subqueriesr   setrH   intersectionr9   Z_should_undefer_in_wildcardr   r;   r%   r   r\   ro   r   r   r   r   )
rN   rT   rU   rV   rW   rX   rY   rm   only_load_propsr@   r+   r+   r,   r\     sV   



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j |dd u rdt
tjS )Nc                    s4   g | ]}t |trt |jtr|j jkr|jqS r+   )
isinstancer   strategyr   r   r%   )r~   prN   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)r   r   )r%   r   
ATTR_EMPTYSQL_OKPASSIVE_NO_RESULTmanagerr?   r   Ziterate_propertiesr   orm_excDetachedInstanceErrorr$   	state_strr   _invoke_raise_loadr   Zload_on_identr   selectset_label_styler!   ZObjectDeletedErrorATTR_WAS_SET)rN   r   passivelocalparentZtoloadr   sessionr+   )rN   r   r,   r     sD   


	
z$DeferredColumnLoader._load_for_statec                 C   s   t d| f )Nz+'%s' is not available due to raiseload=Truesa_excInvalidRequestErrorrN   r   r   lazyr+   r+   r,   r     s   z'DeferredColumnLoader._invoke_raise_loadr#   )rb   rc   rd   re   rf   rK   ra   rt   r\   r   r   rg   r+   r+   rP   r,   r   Z  s    
4
52r   c                   @   s(   e Zd ZdZdddZejfddZdS )	LoadDeferredColumnsz7serializable loader object used by DeferredColumnLoaderFc                 C   s   || _ || _d S r#   )r%   r   )rN   r%   r   r+   r+   r,   rK     s   
zLoadDeferredColumns.__init__c                 C   s>   | j }|jj}|j| }| jrd}nd}||}|||S )N)rE   Tr   )r   T)r   r   )r%   r   r?   r:   r   r   r   )rN   r   r   r%   r   r(   rO   r   r+   r+   r,   __call__#  s   

zLoadDeferredColumns.__call__Nrz   )rb   rc   rd   re   rK   r   PASSIVE_OFFr   r+   r+   r+   r,   r     s    
r   c                       s$   e Zd ZdZdZ fddZ  ZS )AbstractRelationshipLoaderz0LoaderStratgies which deal with related objects.)r?   targetr/   entityc                    s>   t t| || | jj| _| jj| _| jj| _| jj| _d S r#   )rJ   r   rK   rL   r?   r   r   r/   rM   rP   r+   r,   rK   9  s
   


z#AbstractRelationshipLoader.__init__)rb   rc   rd   re   rf   rK   rg   r+   r+   rP   r,   r   4  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)rb   rc   rd   re   r+   r+   r+   r,   r   A  s    r   Znoload)r   c                   @   s$   e Zd ZdZdZdd Zdd ZdS )NoLoaderzYProvide loading behavior for a :class:`.RelationshipProperty`
    with "lazy=None".

    r+   c                 C   s    d| _ t| j|d| jjd d S )NT)r1   r2   )ro   rC   rL   collection_classr   r+   r+   r,   rt   X  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_collectionr%   r   dict_rowr   r+   r,   invoke_no_loadm  s   z5NoLoader.create_row_processor.<locals>.invoke_no_loadr   )r7   r%   )
rN   r^   rU   rV   rW   r?   r_   rX   r`   r   r+   r   r,   ra   b  s   zNoLoader.create_row_processorN)rb   rc   rd   re   rf   rt   ra   r+   r+   r+   r,   r   M  s
    
r   r   r   raise_on_sqlZbaked_selectc                       sp   e Zd ZdZdZ fddZdd Zdd Zd	d
 Zdd Z	dddZ
dd Zeddd Zdd Z  ZS )
LazyLoaderz|Provide loading behavior for a :class:`.RelationshipProperty`
    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_sqlc                    s<  t t| || | jd dk| _| jd dk| _t| jj| _| j	j
}| \| _| _| _|jdd\| _| _| _| j	jrLdd t| j	jD | _nd | _| jd| | j | j oo| j oo| jjd	 j| jdd
| jjd| _| jrt| jD ]}|| jjv r| jj| D ]
}| j| | j|< qqy| 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)rJ   r   rK   r   r   r   r   r   r   rL   _join_conditionZcreate_lazy_clauser   r   r   r   r   r   order_byr   to_listr   loggerinfor/   _get_clauser|   r?   _equivalent_columnsr   list)rN   r9   rO   Zjoin_conditionrx   r[   rP   r+   r,   rK     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)r1   r3   r2   r4   _deferred_history)ro   rL   _legacy_inactive_history_styler4   r>   r   	MANYTOONEr   rC   r   r   )rN   r?   r   r4   r   r+   r+   r,   rt     s2   
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$| jd | jf d S d S r#   )Z_identifying_keyr7   r%   callablevaluer   Zbind_to_colparamsr+   r,   r     s   

)r   r   r   r   r    traverseZcloned_traverse)rN   Z	lazywhere	criterionr   r+   r   r,   "_memoized_attr__simple_lazy_clause  s   

z-LazyLoader._memoized_attr__simple_lazy_clausec                 C   s   | j \}}|d u rt|dd |D S | jj}| }t|}|tj@ r+|tjN }i }|D ]%\}	}
}|
d urP|rH|tj	@ rH|
|||
|}n||||
|}|||	< q/||fS )Nc                 S   s   g | ]\}}}|qS r+   r+   )r~   r%   identr   r+   r+   r,   r         z4LazyLoader._generate_lazy_clause.<locals>.<listcomp>)r   r   Zadapt_criterion_to_nullrL   r9   objr   instance_dictZINIT_OKLOAD_AGAINST_COMMITTED#_get_committed_state_attr_by_column_get_state_attr_by_column)rN   r   r   r   Z
param_keysr?   or   r   r%   r   r   r+   r+   r,   _generate_lazy_clause  s,   




z LazyLoader._generate_lazy_clausec                 C   s   t d| |f )Nz&'%s' is not available due to lazy='%s'r   r   r+   r+   r,   r   /  s   
zLazyLoader._invoke_raise_loadNr+   c           
      C   s|  |j s| jjs
|jr|jstjS |j  }d }| jo| p|j }|tj	@ s'|r.|tj
@ s1|r1tjS | jrG|tj@ sG|r@|tj@ rG| ||d t|}|sb|tj@ rUtjS tdt|| j f |r| |||}tj|v rstjS tj|v r{tjS t|rd S | j |jv r|tj@ stjS |j| j|||d}	|	d ur|	tju rd S |	S |tj	@ r|tj@ stjS | ||||||S )Nr   zbParent instance %s is not bound to a Session; lazy load operation of attribute '%s' cannot proceed)r   Zlazy_loaded_from) r%   rL   Zload_on_pendingZ_load_pendingZ
session_idr   r   r   _extra_criteriar   ZNON_PERSISTENT_OKr   r   NO_RAISEZRELATED_OBJECT_OKr   r   r   r   r$   r   _get_ident_for_use_getZ	NEVER_SETr   
issupersetdictDEFERRED_HISTORY_LOADr   Z_identity_lookupr   ZPASSIVE_CLASS_MISMATCH_emit_lazyload)
rN   r   r   rW   extra_criteriapendingprimary_key_identityr   r   instancer+   r+   r,   r   4  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   rN   r   r+   r,   r     s    z5LazyLoader._get_ident_for_use_get.<locals>.<listcomp>)r   r?   r   r   r   r   r   rq   )rN   r   r   r   instance_mapperr+   r  r,   r     s   
z!LazyLoader._get_ident_for_use_getzsqlalchemy.orm.strategy_optionsc                    sJ  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|rl|jrl|j j }t|j}|rh|jrhd}|t j|f7 }||_n|jj j }| jd|i7  _|r j r|tj!@ s "||d t#j$||||	dS  j%r j%|_& fdd	}| j'| jff7  _' (||\}}d
|	i} j|j)v r|tj*@ stj+S |
rt ,tj-|. rd S nt ,tj/|. rd S  j r|tj!@ s "||d |f|_0|j1|||d}|2 3 4 } j5r|S t6|}|r#|dkrt 7d j  |d S d S )N)_raw_columns_propagate_attrs_label_styler   F)Z_invoke_all_eagers_lazy_loaded_fromZ	autoflush_current_pathr   )load_optionsc                    sR    j jD ]"}|jtju r&|jr&t|jts&j	
| jj|j ||  qd S r#   )rL   Z_reverse_propertyr>   r   r   Z_use_getr   r   r   LoadZfor_existing_pathr   r  r9   ZlazyloadZprocess_compile_state)compile_contextrevrN   Zstrategy_optionsr+   r,   _lazyload_reverse  s   

z4LazyLoader._emit_lazyload.<locals>._lazyload_reverseZ_sa_orm_load_options)execution_optionsr   zKMultiple rows returned with uselist=False for lazily-loaded attribute '%s' r   )8r   Z	preloadedZorm_strategy_optionsr   __clause_element__r"   _create_raw_selectr  r!   r   default_compile_optionsr   Zdefault_load_optionsrL   Z	secondaryselect_fromr?   r%   r   ZNO_AUTOFLUSHZimmutabledict_execution_optionsr   r  r   Z	load_pathtupler$   LoaderCriteriaOption_with_options_path_registryr   r   r   r   r   Zload_on_pk_identityr   _order_by_clausesZ_with_context_optionsr   r   r   r   Zhas_intersectionr   valuesZ
_never_setZ_where_criteriaexecuter   Zscalarsallr/   lenwarn)rN   r   r   r   r   rW   r   Zclauseelementstmtr  r   r   effective_pathr*   r  Zlazy_clauser   r  r_   lr+   r  r,   r     s   






zLazyLoader._emit_lazyloadc	              
      s   | j  | jr|r,|jr,t|jt | ||jr||nd  }	|d | j |	f d S |j	s2|j
rD fdd}
|d | j |
f d S d S )Nr   c                    s   |  |  d S r#   )_resetr   r%   r+   r,   reset_for_lazy_callableT  s   	z@LazyLoader.create_row_processor.<locals>.reset_for_lazy_callable)r%   ro   r   r   Z"_instance_level_callable_processorr<   LoadLazyAttribute_generate_extra_criteriar7   populate_existingZalways_refresh)rN   r^   rU   rV   rW   r?   r_   rX   r`   Zset_lazy_callabler'  r+   r&  r,   ra   ,  s(   
zLazyLoader.create_row_processorNr+   )rb   rc   rd   re   rf   rK   rt   r   r   r   r   r   r   Zpreload_moduler   ra   rg   r+   r+   rP   r,   r   v  s    :"! 
e
 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#   r%   rO   rW   r   )rN   r%   Zinitiating_strategyrW   r   r+   r+   r,   rK   t  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+   r,  )r   r   r!  r%   rO   rW   r   r+   r+   r,   __getstate__z  s   
zLoadLazyAttribute.__getstate__c                 C   s:   | j }|jj}|j| }|j| j }|j||| j| jdS )N)rW   r   )	r%   r   r?   r:   Z_strategiesrO   r   rW   r   )rN   r   r   r%   r  r(   r   r+   r+   r,   r     s   
zLoadLazyAttribute.__call__N)	rb   rc   rd   re   rK   r-  r   r   r   r+   r+   r+   r,   r(  b  s
    r(  c                   @   s"   e Zd ZdZdddZdd ZdS )
PostLoaderz;A relationship loader that emits a second SELECT statement.Nc                 C   sz   |j jptjj| }tj||| jrdS || j }|| j }|	|j
ds;|r3|jd |kr1dS dS || jr;dS dS )NTloaderr   F)rT   current_pathr$   PathRegistryrootr   PostLoadZpath_existsrL   containsr   lengthcontains_mapperr?   )rN   r^   rV   
join_depthr#  path_w_propZeffective_path_w_propr+   r+   r,   _check_recursive_postload  s"   

z$PostLoader._check_recursive_postloadc	           	   
   C   s    | j d||||||||S )N))r   	immediate)rL   r   ra   r]   r+   r+   r,   #_immediateload_create_row_processor  s   z.PostLoader._immediateload_create_row_processorr#   )rb   rc   rd   re   r9  r;  r+   r+   r+   r,   r.    s    
r.  r:  c                   @   s    e Zd ZdZdd Zdd ZdS )ImmediateLoaderr+   c                 C      | j d| d S N)r   r   rL   r   rt   r   r+   r+   r,   rt        z$ImmediateLoader.init_class_attributec	           
         sL    fdd}	 ||rtjtjB  ntjtjB  |d j|	f d S )Nc                    s   |  j| |  d S r#   )get_implr%   r;   r   flagsrN   r+   r,   load_immediate  s   z<ImmediateLoader.create_row_processor.<locals>.load_immediateZdelayed)r9  r   ZPASSIVE_NO_FETCH_RELATEDr   r   r7   r%   )
rN   r^   rU   rV   rW   r?   r_   rX   r`   rE  r+   rC  r,   ra     s
   z$ImmediateLoader.create_row_processorN)rb   rc   rd   rf   rt   ra   r+   r+   r+   r,   r<    s    r<  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eZdd Zdd Zdd Zdd Z  ZS )SubqueryLoader)r7  c                    rI   r#   )rJ   rG  rK   rL   r7  rM   rP   r+   r,   rK     rR   zSubqueryLoader.__init__c                 C   r=  r>  r@  r   r+   r+   r,   rt     rA  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   )getattrrV   r   rr   r%   r}   leftmost_mapperZnew_subq_pathr+   r,   r      s    

z0SubqueryLoader._get_leftmost.<locals>.<listcomp>)rV   r$   Z_class_to_mapperr9   isarL   	_entitiesentity_zeror  r   r   r1  Zcoercelocal_columns)rN   orig_query_entity_index	subq_pathZcurrent_compile_stateis_rootZgiven_subq_pathZsubq_mapperZleftmost_prop
additionalZleftmost_colsleftmost_attrr+   rJ  r,   _get_leftmost  s6   
zSubqueryLoader._get_leftmostc                 C   s.  |  d }tjtj}|j|j |}|js0d|_|j	j
|gdd t||dD R   |dd |D | }	|	|_|j}
|
du rKd|_n|
d u rhtdd	 |	D D ]}t|	|jsgd|_ nqX|jsnd
|_|jdu r|jrt|	|j}|r||	|  |t }tj||dd}|S )NFc                 S   s    h | ]}|d  dur|d  qS )r   Nr+   )r~   entr+   r+   r,   	<setcomp>L  s    
z?SubqueryLoader._generate_from_original_query.<locals>.<setcomp>)rT   c                 S   s   g | ]}t jt jj|qS r+   )r   Z	coercionsexpectZrolesZColumnsClauseRole)r~   r   r+   r+   r,   r   c      z@SubqueryLoader._generate_from_original_query.<locals>.<listcomp>Tc                 s   s    | ]}|j V  qd S r#   )tabler}   r+   r+   r,   r   r  s    z?SubqueryLoader._generate_from_original_query.<locals>.<genexpr>r+   use_mapper_path)Z_cloneZ	correlater
   Query__new____dict__updateZ	_from_objZ_enable_assertionsr  Znon_generativer   Z_adapt_col_listZ_get_current_adapterr  distinct_target_keyZ	_distinctr   r   rq   Z_has_row_limiting_clauser  r   Z expand_column_list_from_order_byZ_set_entitiesr   r!   rF  r$   AliasedClass)rN   orig_compile_state
orig_queryrK  rT  leftmost_relationshipZorig_entityqq2Ztarget_colsra  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   Tr[  c                    s    g | ]}t  jj| jqS r+   )rI  r9   rr   r%   r}   parent_aliasrN   r+   r,   r     s    z2SubqueryLoader._prep_for_joins.<locals>.<listcomp>)r   pairs	enumerater?   rL  r7   r%   r   r   r   r   r$   rb  rL   rO  )rN   ri  rQ  to_joinrn  ir?   r(   Zprev_mapperZ	to_appendr   
local_cols
local_attrr+   rl  r,   _prep_for_joins  s*   
zSubqueryLoader._prep_for_joinsc                 C   s.  t |}|dkrt||d d |g}nu|dkr3t||d d |t||d d |g}nX|dkrdd |dd D }g }|rl|d}	t|	d |	d }
|r`|
|d d }
n|
|}
||
 |sFt||d d |d jg| t||d d |g }|D ]}
||
}q|S )Nr   r   r   rk  c                 S   s:   g | ]}t |d  jst|d  n|d  j|d fqS )r   r   )r   r   r$   rb  r   )r~   itemr+   r+   r,   r     s    z/SubqueryLoader._apply_joins.<locals>.<listcomp>)r   rI  of_typepopr7   r9   join)rN   rf  rp  ri  rm  effective_entityZltjmiddleinnerru  attrr+   r+   r,   _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)	rN   r^   rf  rQ  rewritten_pathrd  ry  rW   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 r#   eager_order_byr  r   r   rL   r   r  r   r+   r,   _setup_outermost_orderby     zISubqueryLoader._setup_outermost_orderby.<locals>._setup_outermost_orderby)rL   r   _add_context_option)rN   rf  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 r#   r  )rN   r^   r  r+   r+   r,   rK   4  s   
z(SubqueryLoader._SubqCollections.__init__c                 C   s    | j d u r	|   | j ||S r#   )r  _loadr;   )rN   r%   defaultr+   r+   r,   r;   >  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-   Q  s    z7SubqueryLoader._SubqCollections._load.<locals>.<lambda>c                 s       | ]}|d  V  qdS )r   Nr+   r~   vvr+   r+   r,   r   R      z8SubqueryLoader._SubqCollections._load.<locals>.<genexpr>)collectionsdefaultdictr   r  r  r   Zwith_sessionr  Z_populate_existingr*  r   	itertoolsgroupbyextend)rN   rf  rowsr   vr+   r+   r,   r  C  s   z%SubqueryLoader._SubqCollections._loadc                 C   s   | j d u r|   d S d S r#   )r  r  )rN   r   r   r   r+   r+   r,   r/  T  s   
z&SubqueryLoader._SubqCollections.loaderN)	rb   rc   rd   re   rf   rK   r;   r  r/  r+   r+   r+   r,   _SubqCollections$  s    	
r  c              	   C   s  |j }|jjr|jjrd S |j|}d|_|| j }||j	dd }	|	d ur*|	}
n| j
}
|jjdtjjtjjf\}}|tjju }|| }|| }||j	dsq| jri|jr\|jjnd|j d | jkrhd S n|| jrqd S |jjdtf|j}t|d}|jr|jjd u rtd	| |f  |j}|j|d
d}|  ||||\}}}}| !||||||}t"|
}|j#dtf|d||fi|_|$d
}| %||\}}}|j&| }| '|||||
}| (||||||
|}| )|}|S )NTpath_with_polymorphic)Zsubquery_pathsNr/  r   r   rd  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)*rT   r   _enable_eagerloadsZ_for_refresh_staterM  indexZloaders_require_bufferingrL   r;   r   r   r
   r  r$   r1  r2  r4  r7  r0  r5  r6  r?   rG  r   Z_get_plugin_class_for_pluginZ_is_lambda_elementr  r
  r   r!  Z	_resolvedZ_create_entities_collectionrU  rj  r]  unionZ_set_enable_single_critrt  Zadd_columnsr}  r  r  )rN   r^   rU   rV   r   rW   rX   rT   rP  with_poly_entityry  rQ  r  rR  rd  Zcompile_state_clsrc  rK  rT  re  ri  rf  rp  rs  rm  r+   r+   r,   _setup_query_from_rowprocX  s   	

	
	






	z(SubqueryLoader._setup_query_from_rowprocc	              
      sX  |j r| |||||| |S | ||| jrd S t|jts!d S | jj| j	 j
js1td|  t|dkrBt|j| jsAd S nt|d | jsMd S | ||||d | }	|	d u r_d S |	jd u sfJ || 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   rk  r  c                       g | ]} j | qS r+   rG   r}   rX   r+   r,   r   =  r   z7SubqueryLoader.create_row_processor.<locals>.<listcomp>)r   r;  r9  r7  r   rT   r   r9   r<   r%   implsupports_populationr   r   r   r$   _entity_isarN  r  r   rL   rO  r;   r   r  r   r/   _create_collection_loader_create_scalar_loader)rN   r^   rU   rV   rW   r?   r_   rX   r`   r  rr  r  r+   r  r,   ra     sj   		


z#SubqueryLoader.create_row_processorc                    t   | | fddfdd}|d jf |d j|f |jr8|d j jf d S d S )Nc                    s*     |d}| j| || d S r+  )r;   rB  r%   set_committed_value)r   r   r   
collectionr  rN   tuple_getterr+   r,   load_collection_from_subqM  s   zKSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subqc                       j |vr | || d S d S r#   r&  r   )r  rN   r+   r,   &load_collection_from_subq_existing_rowS     
zXSubqueryLoader._create_collection_loader.<locals>.load_collection_from_subq_existing_rowr   existingeagerZ_tuple_getterr7   r%   invoke_all_eagersr/  )rN   r^   r_   r  rr  r`   r  r+   )r  r  rN   r  r,   r  H  s   
z(SubqueryLoader._create_collection_loaderc                    r  )Nc                    sL     |d}t|dkrtd  |d }| j| || d S )Nr#   r   LMultiple rows returned with uselist=False for eagerly-loaded attribute '%s' r   )r;   r   r   r!  rB  r%   r  )r   r   r   r  Zscalarr  r+   r,   load_scalar_from_subqd  s   zCSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subqc                    r  r#   r&  r   )r  rN   r+   r,   "load_scalar_from_subq_existing_rowo  r  zPSubqueryLoader._create_scalar_loader.<locals>.load_scalar_from_subq_existing_rowr   r  r  r  )rN   r^   r_   r  rr  r`   r  r+   )r  r  rN   r  r,   r  _  s   
z$SubqueryLoader._create_scalar_loader)rb   rc   rd   rf   rK   rt   rU  rj  rt  r}  r  r  objectr  r  ra   r  r  rg   r+   r+   rP   r,   rG    s     1d/5$4 WrG  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 Z	d ddZdd Zdd Zdd Zdd Z  ZS )!JoinedLoaderzcProvide loading behavior for a :class:`.RelationshipProperty`
    using joined eager loading.

    )r7  _aliased_class_poolc                    s&   t t| || | jj| _g | _d S r#   )rJ   r  rK   rL   r7  r  rM   rP   r+   r,   rK     s   

zJoinedLoader.__init__c                 C   r=  r>  r@  r   r+   r+   r,   rt     rA  z!JoinedLoader.init_class_attributeNFc	                 K   s:  |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	 |durdt|jv rtddS dS )	z@Add a left outer join to the statement that's being constructed.NTFr/  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().)r   r  r/   multi_row_eager_loadersrL   _init_user_defined_eager_procr   $_setup_query_on_user_defined_adapterr4  r7  r5  r6  r?   _generate_row_adapterZeager_adding_joinsr;   r   Zwith_polymorphic_mappersr   r   Z_setup_entity_queryr   secondary_columnsr   r   )rN   rT   rU   rV   rW   rX   rY   r  r  rZ   r  user_defined_adapterclausesadd_to_collectionr  r+   r+   r,   r\     s   

zJoinedLoader.setup_queryc           
      C   s   d|j vrdS |jj}||jdd}|dur|S |j d }|dd  \}}|d ur?t|tr5|j|}t	j
||jjd}n ||jdrW||jd}	tj|	|jjd}n|j|jd }||d| |S )NZeager_from_aliasF user_defined_eager_row_processor)r   r  )r   rV   r9   r;   r   r   strr   aliasr   ZColumnAdapterr?   r   r4  r$   
ORMAdapterZ_polymorphic_adaptersr   )
rN   rW   rT   Ztarget_attributesrV   rX   r  Zroot_mapperr(   r  r+   r+   r,   r    sF   


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)rN   r^   r   rV   rX   r  r  r+   r+   r,   r  8  s"   


z1JoinedLoader._setup_query_on_user_defined_adapterc                 C   s   t | jjrt | jj}nd }d| f}||jvr d |j|< }n|j| d  |j|< }|t| jkrStj| j	|d urA|j
ddnd ddd}t |jj | j| | j| S )NZjoinedloader_acr   r   T)flat)r  r  r\  )r   r   r   
selectabler   r   r  r$   rb  r?   Z_anonymous_fromclauser[   r7   )rN   r^   Zalt_selectabler%   idxto_adaptr+   r+   r,   _gen_pooled_aliased_classR  s&   

z&JoinedLoader._gen_pooled_aliased_classc	                 C   s   | |jdd }	|	r|	}
n| |}
t|
jd| ftj|
| jjdddd}|j	d us,J |d ur9|j
 d| jjn| jj}|sAd}|j| j||||||||rR|jndf	 |j}||jd| ||||fS )	Nr  Zjoinedloader_ormadapterTF)r   Zadapt_requiredZallow_label_resolveZanonymize_labels	innerjoinr+   eager_row_processor)r;   r   r  r   Z_memor$   r  r?   r   aliased_classr   rL   r  Zcreate_eager_joinsr7   _create_eager_joinr   r  r   )rN   rT   r   rV   rW   rX   rY   r  r  r  r  r  r  r  r+   r+   r,   r  t  sJ   

z"JoinedLoader._generate_row_adapterc
              	      sN  |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 rst|j|
 jre|
n j}t|j j j}nttj j|jdd j j}n j}|jd u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$j%&|r|r|j'| }|(||j) q jj*r%| j+t|j,-t./ jj*7  _+d S d S )Nr   zCan't identify which query entity in which to joined eager load from.   Please use an exact match when specifying the join path.r   r  Tr[  Zunnestedadditional_entity_criteriar+   c                 3   s"    | ]}|j r| jV  qd S r#   )Zpropagate_to_loadersZ_resolve_where_criteriar?   )r~   Zaer   r+   r,   r   	  s    

z2JoinedLoader._create_eager_join.<locals>.<genexpr>isouter
_left_memo_right_memor   )0r?   r  Z_should_nest_selectableZeager_joinsZfrom_clausesr   Z#find_left_clause_that_matches_givenr  r   r   r   
setdefaultrI  r   r  Z_entity_for_mapperrL  r9   r   r%   rL   r$   rb  rN  Zrepresents_outer_joinZglobal_attributesr;   r  _ORMJoinr   r   ZJoin_splice_nested_inner_joinstop_onZ_find_columnsZprimaryjoinZpersist_selectabler[   Zcontains_columnrH   rS   r  r   r  _target_adapterZcopy_and_processr   r   )rN   rT   rU   rV   rX   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  	eagerjoinrx   r+   r   r,   r    s   


	





zJoinedLoader._create_eager_joinc           
   	   C   s:  |du rt |tjsJ n0t |tjjr| ||j||||S t |tjs=|d |u r;tj||j|d||d j	|dS d S | ||j
||||j}|d u rjd}| ||j||||j}|d u ri|dusgJ dd S nd}|r|jsz|jsz||}	ntj|j||j|j|jd}	ntj||j
|j|j|jd}	|j|	_|	S )	NFr  rk  r  z9assertion failed attempting to produce joined eager loadsT)r  r  )r  r  )r   r$   r  r   r  ZFromGroupingr  elementr  r?   rightr  leftr  r  Z_splice_into_centerr  r  )
rN   rV   Zjoin_objr  r  r   ZsplicingZtarget_joinZright_splicer  r+   r+   r,   r  Q	  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  )rT   r  r   Zcompound_eager_adapterr  r;   r?   Z_result_has_identity_key)	rN   r^   r_   rX   rV   rW   rT   r  	decoratorr+   r+   r,   _create_eager_adapter	  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  TFr?  )r9   r<   r%   r  r  r   r   r/   Zloaders_require_uniquingrL   r  r   Z_instance_processorr?   r   r  r  r   ra   )rN   r^   rU   rV   rW   r?   r_   rX   r`   Zour_pathZeager_adapterr%   	_instancer+   r+   r,   ra   	  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UniqueAppenderr7   )r   r   r   r  result_listinstr  r^   r%   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_row
  s   zXJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_existing_rowc                        | d S r#   r+   r   r  r+   r,    load_collection_from_joined_exec&
     zPJoinedLoader._create_collection_loader.<locals>.load_collection_from_joined_execr   r  r  r7   r%   r  )rN   r^   r%   r  r`   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 r#   r+   r   )r  r%   r+   r,   load_scalar_from_joined_new_row5
  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   r!  )r   r   r   r  r  r%   rN   r+   r,   $load_scalar_from_joined_existing_row:
  s   
zPJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_existing_rowc                    r  r#   r+   r   r  r+   r,   load_scalar_from_joined_execM
  r  zHJoinedLoader._create_scalar_loader.<locals>.load_scalar_from_joined_execr   r  r  r  )rN   r^   r%   r  r`   r  r  r  r+   r  r,   r  4
  s   z"JoinedLoader._create_scalar_loader)NNFrz   )rb   rc   rd   re   rf   rK   rt   r\   r  r  r  r  r  r  r  ra   r  r  rg   r+   r+   rP   r,   r  {  s*    
s5"= "
V$:/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)r7  	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 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rW|rP|  | _|  | _d S |  | _d S |  | _d S )Nr?  r   TFr   )rJ   r  rK   rL   r7  r>   r   r   r  r   r   r9   r   r|   r   r   _init_for_omit_join_m2or  _init_for_joinr   _init_for_omit_join)rN   r9   rO   Zis_m2o
lazyloaderrP   r+   r,   rK   s
  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)r9   r   r;   )r~   r   equivpk_to_fkrN   r+   r,   r   
  s    
z5SelectInLoader._init_for_omit_join.<locals>.<genexpr>c                    s   g | ]
}| v r | qS r+   r+   r~   rx   )r  r+   r,   r   
  s
    z6SelectInLoader._init_for_omit_join.<locals>.<listcomp>r   Fr   T)r   rL   r   Zlocal_remote_pairsr`  r   r9   rq   r   r   tuple_
query_info)rN   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   Tr?  c                    r  r+   r  r  r
  r+   r,   r   
  r   z:SelectInLoader._init_for_omit_join_m2o.<locals>.<listcomp>)r?   rq   r   r   r  rL   r   r  )rN   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   r9   r=   r  r   rq   r   r   r  r  )rN   r  r  r  r+   r  r,   r  
  s   


zSelectInLoader._init_for_joinc                 C   r=  r>  r@  r   r+   r+   r,   rt   
  rA  z#SelectInLoader.init_class_attributec	              
   C   s   |j r| ||||||||S | ||| jrd S | jj| j jjs)t	
d|  t|dkr:t|j| js9d S nt|d | jsEd S |jjpLtjj| }	|| j }
|
|jdd }|d uret|}n| j}tj||	| j| j| j|| d S )Nr  r   rk  r  )r   r;  r9  r7  r9   r<   r%   r  r  r   r   r   r$   r  rN  rT   r0  r1  r2  rL   r;   r   r   r   r   r3  Zcallable_for_path_load_for_path)rN   r^   rU   rV   rW   r?   r_   rX   r`   Zselectin_pathr8  r  ry  r+   r+   r,   ra   
  sX   
	

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#$d
} j%j&}|j }| j'u r|j(}n|j(} j'j(} fddt)||D }|r|j*r|t+|, f7 }|j-| }|.d|i} j/r|j0dd}jj1r5|js(jj1}jr"fdd|D }|j1| }nfdd}|2|j}|jrD3||	||  d S 4|||  d S )Nc                 3   s$    | ]} j |tjd V  qdS )r  N)r   r   ZPASSIVE_NO_FETCH)r~   Zlk)r?   r   
state_dictr+   r,   r     s    
z0SelectInLoader._load_for_path.<locals>.<genexpr>c                 S   s$   g | ]\}}|j d  ||j|fqS )r   )r%   r   )r~   r   	overwriter+   r+   r,   r   ;  s    z1SelectInLoader._load_for_path.<locals>.<listcomp>c                    r  r+   r  r  ry  r+   r,   r   K  r  r  r  )Zcompile_state_pluginZplugin_subject)r  r	  r   r  primary_keysc                    s   g | ]
\}}|  |qS r+   )Z'_adapt_cached_option_to_uncached_option)r~   Zorig_optZuncached_opt)r^   r+   r,   r     s    r  T)r*  c                    r  r+   r  r   r  r+   r,   r     s    c                    r  r#   r  r  r   r+   r,   r    r  z?SelectInLoader._load_for_path.<locals>._setup_outermost_orderby)5r%   r  r  r  r  r   r9   r   r  r  r   r   r   r7   r  r  r  r   r  r$   ZBundler  r"   r  r!   r   r  r  r  rx  rI  rL   rv  filterZin_r   r   rT   Zselect_statementr
   r  zipr   r  r)  r~  Z_update_compile_optionsr*  r  r   r  _load_via_child_load_via_parent)rN   r^   rV   Zstates	load_onlyry  rW   r  
our_statesnone_statesr  Zrelated_identr  r  Z
bundle_entZ
bundle_sqlZ
entity_sqlrf  rd  r#  r  Zcached_optionsZuncached_optionsr  r  r+   )r^   ry  r?   rN   r   r  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 ]\}}}|sJ| j|v rJq=|| j	|||sV|n|g q=q1|s	|D ]\}}}|sm| j|v rmq`|| j	||d  q`d S )Nr   c                 S   s   i | ]\}}||qS r+   r+   )r~   r   r  r+   r+   r,   
<dictcomp>  s    z2SelectInLoader._load_via_child.<locals>.<dictcomp>r  c                    s   g | ]} j r|d  n|qS rH  r  )r~   r%   r  r+   r,   r     rY  z2SelectInLoader._load_via_child.<locals>.<listcomp>r   )
r/   sorted
_chunksizer   r  r   r;   r%   rB  r  )rN   r!  r"  r  rf  r^   r/   Zour_keyschunkdatar%   Zrelated_objr   r   r  r+   r%  r,   r    s@   !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  q9|D ]>\}}}}|sZ| j|v rZqL|	||}|s|rt|dkrqtd|   || j|||d  qL|| j||| qL|sd S d S )Nr+   r   c                    s&   g | ]\}}}} j r|d  n|qS rH  r$  )r~   r%   r   r  r  r%  r+   r,   r     s    
z3SelectInLoader._load_via_parent.<locals>.<listcomp>r  r&  c                 S   s   | d S rl   r+   r  r+   r+   r,   r-     s    z1SelectInLoader._load_via_parent.<locals>.<lambda>c                 s   r  )r   Nr+   r  r+   r+   r,   r     r  z2SelectInLoader._load_via_parent.<locals>.<genexpr>r   r  )r/   r(  r  r  r   r  r  r   r  r   r  r%   r;   r   r   r!  rB  r  )rN   r!  r  rf  r^   r/   Z_empty_resultr)  r  r*  r   r  r%   r   r  r  r  r+   r%  r,   r    sF   


zSelectInLoader._load_via_parent)rb   rc   rd   rf   r  
namedtupler  r(  rK   r	  r  r  rt   ra   r  r  r  rg   r+   r+   rP   r,   r  Z
  s"    D B.r  c                    sT   fdd  fdd} fdd}t j| d|dddd	 t j| d
|dddd	 d S )Nc                    sT   |d ur(|j  j kr(|t|}|r(||ur(tjdt|| j f dd|S )NzsInstance %s is already associated with an instance of %s via its %s attribute, and is only allowed a single parent.Zbbf1)code)	r%   	hasparentr   Zinstance_stater   r   r$   Zinstance_strr=   )r   r   oldvalue	initiatorr-  )r(   r+   r,   	_do_check-  s   z*single_parent_validator.<locals>._do_checkc                    s    | |d |S r#   r+   )r   r   r/  r0  r+   r,   r7   :     z'single_parent_validator.<locals>.appendc                    s    | |||S r#   r+   )r   r   r.  r/  r1  r+   r,   set_=  r2  z%single_parent_validator.<locals>.set_r7   T)rawretvalr4   r   )r   listen)r'   r(   r7   r3  r+   )r0  r(   r,   r8   ,  s   r8   )NNNNFN)Dre   
__future__r   r  r   r   r   r   r   r   r   r	   r
   r   r   r   r$   baser   r   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"   rC   ZColumnPropertyZstrategy_forrF   Zclass_loggerrh   r{   r   r  r   r   ZRelationshipPropertyr   r   ZMemoizedSlotsr   r(  r.  r<  rG  r  r  r8   r+   r+   r+   r,   <module>   s   
S+UP =
&    i42"          a   S