B
    CVvgL                 @   sh  d dl Z d dlmZ d dlmZmZ d dlmZmZm	Z	 d dl
mZ d dlmZmZ d dlmZ dd	lmZ dd
lmZ dgZG dd deeZdHddZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd dejZ e!e e!e e!e e!e e!e e!e  G dd deZ"G d d! d!e"Z#G d"d# d#Z$G d$d% d%Z%G d&d' d'ej&Z'G d(d) d)ej(Z)G d*d+ d+e Z*G d,d- d-e%e$ej+Z,G d.d/ d/e%e$ej-Z.G d0d1 d1e$ej/Z0G d2d3 d3e%e$ej1Z2G d4d5 d5e$ej3Z4G d6d7 d7e%e$ej5Z6G d8d9 d9e$ej7Z8G d:d; d;e%e$ej9Z:G d<d= d=Z;G d>d? d?e;ej<Z=G d@dA dAe;ej>Z?G dBdC dCe;ej@ZAG dDdE dEe;ejBZCe"!e) e"!e* e"!e, e"!e' e"!e. e"!e0 e"!e2 e"!e4 e"!e6 e"!e8 e"!e: e"!e= e"!e? e"!eA e"!eC G dFdG dGZDdS )I    N)forms)checks
exceptions)NotSupportedErrorconnectionsrouter)lookups)PostgresOperatorLookup	Transform)gettext_lazy   )Field)CheckFieldDefaultMixin	JSONFieldc                   s   e Zd ZdZedZdediZdZd fdd	Z fd	d
Z	dd Z
 fddZdd Zdd Zdd Z fddZ fddZdd Z fddZ  ZS )r   FzA JSON objectinvalidzValue must be valid JSON.)dictz{}Nc                sJ   |rt |std|r(t |s(td|| _|| _t j||f| d S )Nz0The encoder parameter must be a callable object.z0The decoder parameter must be a callable object.)callable
ValueErrorencoderdecodersuper__init__)selfZverbose_namenamer   r   kwargs)	__class__ @/tmp/pip-install-o3oxmrkh/Django/django/db/models/fields/json.pyr      s    zJSONField.__init__c                s0   t  jf |}|dpg }|| | |S )N	databases)r   checkgetextend_check_supported)r   r   errorsr   )r   r   r   r   $   s    zJSONField.checkc             C   s~   g }xt|D ]l}t || jsq
t| }| jjjrB| jjj|jkrBq
d| jjjks
|jj	s
|
tjd|j | jdd q
W |S )Nsupports_json_fieldz%s does not support JSONFields.zfields.E180)objid)r   Zallow_migrate_modelmodelr   Z_metaZrequired_db_vendorvendorZrequired_db_featuresfeaturesr$   appendr   ErrorZdisplay_name)r   r   r#   db
connectionr   r   r   r"   *   s"    

zJSONField._check_supportedc                sF   t   \}}}}| jd k	r&| j|d< | jd k	r:| j|d< ||||fS )Nr   r   )r   deconstructr   r   )r   r   pathargsr   )r   r   r   r.   C   s    



zJSONField.deconstructc             C   sP   |d kr|S t |tr$t |ts$|S ytj|| jdS  tjk
rJ   |S X d S )N)cls)
isinstanceKeyTransformstrjsonloadsr   JSONDecodeError)r   valueZ
expressionr-   r   r   r   from_db_valueK   s    zJSONField.from_db_valuec             C   s   dS )Nr   r   )r   r   r   r   get_internal_typeW   s    zJSONField.get_internal_typec             C   s   |d kr|S t j|| jdS )N)r1   )r5   dumpsr   )r   r8   r   r   r   get_prep_valueZ   s    zJSONField.get_prep_valuec                s   t  |}|r|S t|S )N)r   get_transformKeyTransformFactory)r   r   Z	transform)r   r   r   r=   _   s    zJSONField.get_transformc                sV   t  || ytj|| jd W n. tk
rP   tj| jd dd|idY nX d S )N)r1   r   r8   )codeparams)	r   validater5   r;   r   	TypeErrorr   ZValidationErrorZerror_messages)r   r8   Zmodel_instance)r   r   r   rA   e   s    zJSONField.validatec             C   s
   |  |S )N)Zvalue_from_object)r   r%   r   r   r   value_to_stringp   s    zJSONField.value_to_stringc                s    t  jf tj| j| jd|S )N)Z
form_classr   r   )r   	formfieldr   r   r   r   )r   r   )r   r   r   rD   s   s
    zJSONField.formfield)NNNN)__name__
__module____qualname__Zempty_strings_allowed_descriptionZdefault_error_messagesZ_default_hintr   r   r"   r.   r9   r:   r<   r=   rA   rC   rD   __classcell__r   r   )r   r   r      s   Tc          	   C   sp   |r
dgng }xV| D ]N}yt |}W n. tk
rR   |d |t| Y qX |d|  qW d|S )N$.z[%s] )intr   r*   r5   r;   join)key_transformsinclude_rootr/   key_transformnumr   r   r   compile_json_path|   s    

rT   c               @   s   e Zd ZdZdZdd ZdS )DataContainscontainsz@>c             C   sP   |j jstd| ||\}}| ||\}}t|t| }d||f |fS )Nz:contains lookup is not supported on this database backend.zJSON_CONTAINS(%s, %s))r)   supports_json_field_containsr   process_lhsprocess_rhstuple)r   compilerr-   lhs
lhs_paramsrhs
rhs_paramsr@   r   r   r   as_sql   s    zDataContains.as_sqlN)rE   rF   rG   lookup_namepostgres_operatorr`   r   r   r   r   rU      s   rU   c               @   s   e Zd ZdZdZdd ZdS )ContainedByZcontained_byz<@c             C   sP   |j jstd| ||\}}| ||\}}t|t| }d||f |fS )Nz>contained_by lookup is not supported on this database backend.zJSON_CONTAINS(%s, %s))r)   rW   r   rX   rY   rZ   )r   r[   r-   r\   r]   r^   r_   r@   r   r   r   r`      s    zContainedBy.as_sqlN)rE   rF   rG   ra   rb   r`   r   r   r   r   rc      s   rc   c                   sB   e Zd ZdZdddZdd Zdd Z fdd	Zd
d Z  Z	S )HasKeyLookupNc          	   C   s   t | jtr*| j||\}}}t|}n| ||\}}d}|| }| j}	g }
t |	ttfsd|	g}	xJ|	D ]B}t |tr|||^ }}n|g}|
	d|t|ddf  qjW | j
rd| j
|gt|
  }|t|t|
 fS )NrK   z%s%sF)rQ   z(%s))r2   r\   r3   preprocess_lhsrT   rX   r^   listrZ   r*   logical_operatorrO   len)r   r[   r-   templater\   r]   Zlhs_key_transformsZlhs_json_pathsqlr^   r_   keyrH   rhs_key_transformsr   r   r   r`      s(    


zHasKeyLookup.as_sqlc             C   s   | j ||ddS )Nz"JSON_CONTAINS_PATH(%s, 'one', %%s))ri   )r`   )r   r[   r-   r   r   r   as_mysql   s    zHasKeyLookup.as_mysqlc             C   s$   | j ||dd\}}|t| g fS )NzJSON_EXISTS(%s, '%%s'))ri   )r`   rZ   )r   r[   r-   rj   r@   r   r   r   	as_oracle   s    zHasKeyLookup.as_oraclec                s\   t | jtrN| j||^ }}x"|d d D ]}t|| j| _q.W |d | _t ||S )N)r2   r^   r3   re   r\   r   as_postgresql)r   r[   r-   rH   rl   rk   )r   r   r   rp      s    
zHasKeyLookup.as_postgresqlc             C   s   | j ||ddS )NzJSON_TYPE(%s, %%s) IS NOT NULL)ri   )r`   )r   r[   r-   r   r   r   	as_sqlite   s    zHasKeyLookup.as_sqlite)N)
rE   rF   rG   rg   r`   rm   rn   rp   rq   rJ   r   r   )r   r   rd      s   
rd   c               @   s   e Zd ZdZdZdZdS )HasKeyZhas_key?FN)rE   rF   rG   ra   rb   Zprepare_rhsr   r   r   r   rr      s   rr   c               @   s    e Zd ZdZdZdZdd ZdS )HasKeysZhas_keysz?&z AND c             C   s   dd | j D S )Nc             S   s   g | ]}t |qS r   )r4   ).0itemr   r   r   
<listcomp>   s    z+HasKeys.get_prep_lookup.<locals>.<listcomp>)r^   )r   r   r   r   get_prep_lookup   s    zHasKeys.get_prep_lookupN)rE   rF   rG   ra   rb   rg   rx   r   r   r   r   rt      s   rt   c               @   s   e Zd ZdZdZdZdS )
HasAnyKeysZhas_any_keysz?|z OR N)rE   rF   rG   ra   rb   rg   r   r   r   r   ry      s   ry   c                   s,   e Zd ZdZ fddZ fddZ  ZS )	JSONExactTc                sP   t  ||\}}|jdkrHt  ||\}}|dkrH|d gkrHd| }||fS )Nsqlitez%szJSON_TYPE(%s, '$'))r   rX   r(   rY   )r   r[   r-   r\   r]   r^   r_   )r   r   r   rX      s    
zJSONExact.process_lhsc                sV   t  ||\}}|dkr*|d gkr*dg}|jdkrNdgt| }|t| }||fS )Nz%snullmysqlzJSON_EXTRACT(%s, '$'))r   rY   r(   rh   rZ   )r   r[   r-   r^   r_   func)r   r   r   rY      s    
zJSONExact.process_rhs)rE   rF   rG   Zcan_use_none_as_rhsrX   rY   rJ   r   r   )r   r   rz      s   	rz   c                   sL   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 Z
  ZS )r3   z->z#>c                s   t  j|| t|| _d S )N)r   r   r4   key_name)r   r   r0   r   )r   r   r   r     s    zKeyTransform.__init__c             C   sb   | j g}| j}x"t|tr0|d|j  |j}qW ||\}}|jdkrXdd |D }|||fS )Nr   oraclec             S   s   g | ]}| d dqS )%z%%)replace)ru   rk   r   r   r   rw      s    z/KeyTransform.preprocess_lhs.<locals>.<listcomp>)r   r\   r2   r3   insertcompiler(   )r   r[   r-   rP   previousr\   r@   r   r   r   re     s    

zKeyTransform.preprocess_lhsc             C   s0   |  ||\}}}t|}d| t||f fS )NzJSON_EXTRACT(%s, %%s))re   rT   rZ   )r   r[   r-   r\   r@   rP   	json_pathr   r   r   rm   #  s    zKeyTransform.as_mysqlc             C   s6   |  ||\}}}t|}d||fd  t|d fS )Nz4COALESCE(JSON_QUERY(%s, '%s'), JSON_VALUE(%s, '%s'))   )re   rT   rZ   )r   r[   r-   r\   r@   rP   r   r   r   r   rn   (  s
    zKeyTransform.as_oraclec             C   s   |  ||\}}}t|dkr>d|| jf }|t||f fS yt| j}W n tk
rf   | j}Y nX d|| jf t||f fS )Nr   z(%s %s %%s))re   rh   postgres_nested_operatorrZ   rN   r   r   rb   )r   r[   r-   r\   r@   rP   rj   lookupr   r   r   rp   0  s    zKeyTransform.as_postgresqlc             C   s0   |  ||\}}}t|}d| t||f fS )NzJSON_EXTRACT(%s, %%s))re   rT   rZ   )r   r[   r-   r\   r@   rP   r   r   r   r   rq   ;  s    zKeyTransform.as_sqlite)rE   rF   rG   rb   r   r   re   rm   rn   rp   rq   rJ   r   r   )r   r   r3     s   r3   c               @   s   e Zd ZdZdZdS )KeyTextTransformz->>z#>>N)rE   rF   rG   rb   r   r   r   r   r   r   A  s   r   c                   s    e Zd ZdZ fddZ  ZS )KeyTransformTextLookupMixinz
    Mixin for combining with a lookup expecting a text lhs from a JSONField
    key lookup. On PostgreSQL, make use of the ->> operator instead of casting
    key values to text and performing the lookup on the resulting
    representation.
    c                s@   t |tstdt|jf|j|j}t j|f|| d S )NzLTransform should be an instance of KeyTransform in order to use this lookup.)	r2   r3   rB   r   r   Zsource_expressionsextrar   r   )r   rR   r0   r   Zkey_text_transform)r   r   r   r   M  s    
z$KeyTransformTextLookupMixin.__init__)rE   rF   rG   __doc__r   rJ   r   r   )r   r   r   F  s   r   c                   s,   e Zd ZdZ fddZ fddZ  ZS )CaseInsensitiveMixinz
    Mixin to allow case-insensitive comparison of JSON values on MySQL.
    MySQL handles strings used in JSON context using the utf8mb4_bin collation.
    Because utf8mb4_bin is a binary collation, comparison of JSON values is
    case-sensitive.
    c                s0   t  ||\}}|jdkr(d| |fS ||fS )Nr}   z	LOWER(%s))r   rX   r(   )r   r[   r-   r\   r]   )r   r   r   rX   a  s    
z CaseInsensitiveMixin.process_lhsc                s0   t  ||\}}|jdkr(d| |fS ||fS )Nr}   z	LOWER(%s))r   rY   r(   )r   r[   r-   r^   r_   )r   r   r   rY   g  s    
z CaseInsensitiveMixin.process_rhs)rE   rF   rG   r   rX   rY   rJ   r   r   )r   r   r   Z  s   r   c               @   s   e Zd Zdd Zdd ZdS )KeyTransformIsNullc             C   s\   t | jj| jj||\}}| js,||fS | j||\}}}d||f t|t| fS )Nz(NOT %s OR %s IS NULL))rr   r\   r   rn   r^   re   rZ   )r   r[   r-   rj   r@   r\   r]   rH   r   r   r   rn   p  s    
zKeyTransformIsNull.as_oraclec             C   s,   d}| j sd}t| jj| jjj|||dS )NzJSON_TYPE(%s, %%s) IS NULLzJSON_TYPE(%s, %%s) IS NOT NULL)ri   )r^   rr   r\   r   r`   )r   r[   r-   ri   r   r   r   rq   {  s    zKeyTransformIsNull.as_sqliteN)rE   rF   rG   rn   rq   r   r   r   r   r   n  s   r   c                   s   e Zd Z fddZ  ZS )KeyTransformInc                s   t  ||||\}}t|dsp|jjsp|jdkrbt|}d}t|t	t
frX|d }qp|d }n|jdkrpd}|jdkr|jrd	| }||fS )
Nr`   r   z9%s(JSON_OBJECT('value' VALUE %%s FORMAT JSON), '$.value')
JSON_QUERY
JSON_VALUE>   r}   r{   zJSON_EXTRACT(%s, '$')r}   zJSON_UNQUOTE(%s))r   resolve_expression_parameterhasattrr)   has_native_json_fieldr(   r5   r6   r2   rf   r   Zmysql_is_mariadb)r   r[   r-   rj   paramr@   r8   )r   r   r   r     s    





z+KeyTransformIn.resolve_expression_parameter)rE   rF   rG   r   rJ   r   r   )r   r   r     s   r   c                   s4   e Zd Z fddZ fddZ fddZ  ZS )KeyTransformExactc                sb   t  ||\}}|jdkrZt  ||\}}|dkrZ|dgkrZ| j||^}}d| }||fS )Nr{   z%sr|   zJSON_TYPE(%s, %%s))r   rX   r(   rY   r\   re   )r   r[   r-   r\   r]   r^   r_   rH   )r   r   r   rX     s    
zKeyTransformExact.process_lhsc                s   t | jtr ttj| ||S t ||\}}|jdkrg }d}xB|D ]:}t	|}t |t
tfrv||d  qJ||d  qJW |t| }n$|jdkrdd |D }|t| }||fS )Nr   z9%s(JSON_OBJECT('value' VALUE %%s FORMAT JSON), '$.value')r   r   r{   c             S   s   g | ]}|d krdndqS )r|   zJSON_EXTRACT(%s, '$')z%sr   )ru   r8   r   r   r   rw     s    z1KeyTransformExact.process_rhs.<locals>.<listcomp>)r2   r^   r3   r   r   ExactrY   r(   r5   r6   rf   r   r*   rZ   )r   r[   r-   r^   r_   r~   rj   r8   )r   r   r   rY     s     



zKeyTransformExact.process_rhsc                s   t  ||\}}|dgkr~t| jj| jj}|||\}}| jd| jd}|||\}	}
d||	f t|t|
 fS t  ||S )Nr|   ZisnullTz	%s AND %s)	r   rY   rr   r\   r   rn   Z
get_lookupr`   rZ   )r   r[   r-   r^   r_   Zhas_key_exprZhas_key_sqlZhas_key_paramsZis_null_exprZis_null_sqlZis_null_params)r   r   r   rn     s    

zKeyTransformExact.as_oracle)rE   rF   rG   rX   rY   rn   rJ   r   r   )r   r   r     s   	r   c               @   s   e Zd ZdS )KeyTransformIExactN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformIContainsN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformStartsWithN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformIStartsWithN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformEndsWithN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformIEndsWithN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformRegexN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformIRegexN)rE   rF   rG   r   r   r   r   r     s   r   c                   s   e Zd Z fddZ  ZS )KeyTransformNumericLookupMixinc                s0   t  ||\}}|jjs(dd |D }||fS )Nc             S   s   g | ]}t |qS r   )r5   r6   )ru   r8   r   r   r   rw     s    z>KeyTransformNumericLookupMixin.process_rhs.<locals>.<listcomp>)r   rY   r)   r   )r   r[   r-   r^   r_   )r   r   r   rY     s    z*KeyTransformNumericLookupMixin.process_rhs)rE   rF   rG   rY   rJ   r   r   )r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformLtN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformLteN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformGtN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd ZdS )KeyTransformGteN)rE   rF   rG   r   r   r   r   r     s   r   c               @   s   e Zd Zdd Zdd ZdS )r>   c             C   s
   || _ d S )N)r   )r   r   r   r   r   r     s    zKeyTransformFactory.__init__c             O   s   t | jf||S )N)r3   r   )r   r0   r   r   r   r   __call__  s    zKeyTransformFactory.__call__N)rE   rF   rG   r   r   r   r   r   r   r>     s   r>   )T)Er5   Zdjangor   Zdjango.corer   r   Z	django.dbr   r   r   Zdjango.db.modelsr   Zdjango.db.models.lookupsr	   r
   Zdjango.utils.translationr   rH   rM   r   Zmixinsr   __all__r   rT   rU   rc   rd   rr   rt   ry   r   rz   Zregister_lookupr3   r   r   r   ZIsNullr   ZInr   r   ZIExactr   Z	IContainsr   Z
StartsWithr   ZIStartsWithr   ZEndsWithr   Z	IEndsWithr   Regexr   ZIRegexr   r   ZLessThanr   ZLessThanOrEqualr   ZGreaterThanr   ZGreaterThanOrEqualr   r>   r   r   r   r   <module>   sx   l
4	





2,














