o
    (S-gï  ã                   @   sî   d Z ddlmZmZ ddlmZmZmZmZm	Z	 ddl
mZ ddlmZ ddlmZmZ g d¢ZG dd	„ d	eƒZG d
d„ deeeƒZG dd„ deƒZG dd„ deƒZG dd„ deƒZG dd„ deeƒZG dd„ deeƒZG dd„ deeƒZdS )z>
Classes to represent the definitions of aggregate functions.
é    )Ú
FieldErrorÚFullResultSet)ÚCaseÚFuncÚStarÚValueÚWhen)ÚIntegerField)ÚCoalesce)ÚFixDurationInputMixinÚNumericOutputFieldMixin)Ú	AggregateÚAvgÚCountÚMaxÚMinÚStdDevÚSumÚVariancec                       s¢   e Zd ZdZdZdZdZdZdZdZ	ddddœ‡ fdd„
Z
‡ fd	d
„Z‡ fdd„Z‡ fdd„Z	d‡ fdd„	Zedd„ ƒZdd„ Z‡ fdd„Z‡ fdd„Z‡  ZS )r   z)%(function)s(%(distinct)s%(expressions)s)TNz%s FILTER (WHERE %%(filter)s)F)ÚdistinctÚfilterÚdefaultc                   sf   |r| j std| jj ƒ‚|d ur| jd urt| jj› d�ƒ‚|| _|| _|| _tƒ j	|i |¤Ž d S )Nz%s does not allow distinct.z does not allow default.)
Úallow_distinctÚ	TypeErrorÚ	__class__Ú__name__Úempty_result_set_valuer   r   r   ÚsuperÚ__init__)Úselfr   r   r   ÚexpressionsÚextra©r   © úZ/var/www/html/map_library/venv/lib/python3.10/site-packages/django/db/models/aggregates.pyr   #   s   
zAggregate.__init__c                    s   dd„ t ƒ  ¡ D ƒS )Nc                 S   s   g | ]}|j ‘qS r#   )Ú_output_field_or_none)Ú.0Úer#   r#   r$   Ú
<listcomp>1   s    z/Aggregate.get_source_fields.<locals>.<listcomp>)r   Úget_source_expressions©r   r"   r#   r$   Úget_source_fields/   s   zAggregate.get_source_fieldsc                    s   t ƒ  ¡ }|| jg S ©N)r   r)   r   )r   Úsource_expressionsr"   r#   r$   r)   3   s   
z Aggregate.get_source_expressionsc                    s   |�^ }| _ tƒ  |¡S r,   )r   r   Úset_source_expressions)r   Úexprsr"   r#   r$   r.   7   s   z Aggregate.set_source_expressionsc              	      s@  t ƒ  ||||¡}|jr|j ||||¡nd |_|r7| ¡ D ]}|j| jr5td|j› d|› d|› d�ƒ‚qn2| jsit t|ƒ 	¡ }t
|ƒD ]#\}	}
|
jrh|  	¡ |	 }t|dƒrZ|jnt|ƒ}td|j||f ƒ‚qE|j }d u rr|S t|dƒr‰| ||||¡}|jd u rˆ|j|_nt||jƒ}d |_t|||jd�}|j|_|S )	NzCannot compute z('z'): 'z' is an aggregateÚnamez-Cannot compute %s('%s'): '%s' is an aggregateÚresolve_expression)Úoutput_field)r   r1   r   Úget_refsÚannotationsÚ
is_summaryr   r0   r   r)   Ú	enumerateÚcontains_aggregateÚhasattrÚreprr   r%   r2   r   r
   )r   ÚqueryÚallow_joinsÚreuseÚ	summarizeÚfor_saveÚcÚrefr    ÚindexÚexprÚbefore_resolvedr0   r   Úcoalescer"   r#   r$   r1   ;   sP   ÿýÿÿÿÿý
ÿÿù

€zAggregate.resolve_expressionc                 C   sL   dd„ |   ¡ D ƒ}t|ƒdkr"t|d dƒr"d|d j| j ¡ f S tdƒ‚)Nc                 S   s   g | ]}|d ur|‘qS r,   r#   )r&   rB   r#   r#   r$   r(   k   s    z+Aggregate.default_alias.<locals>.<listcomp>é   r   r0   z%s__%sz$Complex expressions require an alias)r)   Úlenr8   r0   Úlowerr   )r   r    r#   r#   r$   Údefault_aliasi   s   ÿzAggregate.default_aliasc                 C   s   g S r,   r#   r*   r#   r#   r$   Úget_group_by_colsr   s   zAggregate.get_group_by_colsc                    s  | j rdnd|d< | jrw|jjrHz| j ||¡\}}W n	 ty$   Y nSw | j| d| j¡ }t	ƒ j||f||dœ|¤Ž\}}|g |¢|¢R fS |  
¡ }	d |	_|	 ¡ }
t| j|
d d�}|	 t|ƒg|
dd …  ¡ t	t|	ƒj||fi |¤ŽS t	ƒ j||fi |¤ŽS )	Nz	DISTINCT Ú r   Útemplate)rK   r   r   )ÚthenrE   )r   r   ÚfeaturesÚ supports_aggregate_filter_clauseÚas_sqlr   Úfilter_templateÚgetrK   r   Úcopyr)   r   r.   r   r   )r   ÚcompilerÚ
connectionÚextra_contextÚ
filter_sqlÚfilter_paramsrK   ÚsqlÚparamsrR   r-   Ú	conditionr"   r#   r$   rO   u   s@   ÿÿþü
û
ÿÿzAggregate.as_sqlc                    s.   t ƒ  ¡ }| jr| j|d< | jr| j|d< |S )Nr   r   )r   Ú_get_repr_optionsr   r   )r   Úoptionsr"   r#   r$   r[   ”   s   


zAggregate._get_repr_options)NTNFF)r   Ú
__module__Ú__qualname__rK   r7   r0   rP   Úwindow_compatibler   r   r   r+   r)   r.   r1   ÚpropertyrH   rI   rO   r[   Ú__classcell__r#   r#   r"   r$   r      s(    ÿÿ.
r   c                   @   ó   e Zd ZdZd ZdZdS )r   ÚAVGTN©r   r]   r^   Úfunctionr0   r   r#   r#   r#   r$   r   �   ó    r   c                       s4   e Zd ZdZd Zeƒ ZdZdZd‡ fdd„	Z	‡  Z
S )r   ÚCOUNTTr   Nc                    sD   |dkrt ƒ }t|t ƒr|d urtdƒ‚tƒ j|fd|i|¤Ž d S )NÚ*z8Star cannot be used with filter. Please specify a field.r   )r   Ú
isinstanceÚ
ValueErrorr   r   )r   Ú
expressionr   r!   r"   r#   r$   r   ª   s
   zCount.__init__r,   )r   r]   r^   re   r0   r	   r2   r   r   r   ra   r#   r#   r"   r$   r   £   s    r   c                   @   ó   e Zd ZdZd ZdS )r   ÚMAXN©r   r]   r^   re   r0   r#   r#   r#   r$   r   ²   ó    r   c                   @   rl   )r   ÚMINNrn   r#   r#   r#   r$   r   ·   ro   r   c                       ó.   e Zd Zd Zd‡ fdd„	Z‡ fdd„Z‡  ZS )r   Fc                    ó&   |rdnd| _ tƒ j|fi |¤Ž d S )NÚSTDDEV_SAMPÚ
STDDEV_POP©re   r   r   ©r   rk   Úsampler!   r"   r#   r$   r   ¿   ó   zStdDev.__init__c                    ó   i t ƒ  ¡ ¥d| jdki¥S )Nrw   rs   ©r   r[   re   r*   r"   r#   r$   r[   Ã   ó   zStdDev._get_repr_options©F©r   r]   r^   r0   r   r[   ra   r#   r#   r"   r$   r   ¼   ó    r   c                   @   rb   )r   ÚSUMTNrd   r#   r#   r#   r$   r   Ç   rf   r   c                       rq   )r   Fc                    rr   )NÚVAR_SAMPÚVAR_POPru   rv   r"   r#   r$   r   Ð   rx   zVariance.__init__c                    ry   )Nrw   r€   rz   r*   r"   r#   r$   r[   Ô   r{   zVariance._get_repr_optionsr|   r}   r#   r#   r"   r$   r   Í   r~   r   N)Ú__doc__Údjango.core.exceptionsr   r   Údjango.db.models.expressionsr   r   r   r   r   Údjango.db.models.fieldsr	   Ú%django.db.models.functions.comparisonr
   Ú!django.db.models.functions.mixinsr   r   Ú__all__r   r   r   r   r   r   r   r   r#   r#   r#   r$   Ú<module>   s      