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    CVvg¥3  ã            
   @   s¸  d Z ddl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mZ ddlmZ ddlmZ dd	lmZ dd
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râ Z  ze	de  ƒ‚W ddZ [ X Y nX dd„ Z!e!ƒ Z"e"dk �r
e	dej# ƒ‚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/ ej0 1eej0j2¡ ej3 4¡  dZ5ej0 6e5fdej0j7¡Z8ej0 9e8¡ G dd„ deƒZ:G dd„ deƒZdS )zW
PostgreSQL database backend for Django.

Requires psycopg 2: https://www.psycopg.org/
é    N)Úcontextmanager)Úsettings)ÚImproperlyConfigured)ÚDatabaseErrorÚconnections)ÚBaseDatabaseWrapper)ÚCursorDebugWrapper)Úasync_unsafe)Úcached_property)Ú
SafeString)Úget_version_tuplez!Error loading psycopg2 module: %sc              C   s   t j dd¡d } t| ƒS )Nú é   r   )Úpsycopg2Ú__version__Úsplitr   )Úversion© r   úF/tmp/pip-install-o3oxmrkh/Django/django/db/backends/postgresql/base.pyÚpsycopg2_version    s    r   )é   é   é   z8psycopg2_version 2.5.4 or newer is required; you have %sr   )ÚDatabaseClient)ÚDatabaseCreation)ÚDatabaseFeatures)ÚDatabaseIntrospection)ÚDatabaseOperations)ÚDatabaseSchemaEditori  Ú	INETARRAYc                   s>  e Zd ZdZdZddddddd	d
dddddddddddddddddddddœZddddœZdddddddd d!d"ddddd#œZd$Zd%d&d'd(d)d*d+œZ	e
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eZeZeZeZeZeZd,Zd-d.„ Zed/d0„ ƒZd1d2„ Zd3d4„ ZedHd6d7„ƒZd8d9„ Zed:d;„ ƒZd<d=„ Z dId>d?„Z!d@dA„ Z"e#‡ fdBdC„ƒZ$e%dDdE„ ƒZ&dFdG„ Z'‡  Z(S )JÚDatabaseWrapperÚ
postgresqlZ
PostgreSQLÚserialZ	bigserialZbyteaÚbooleanzvarchar(%(max_length)s)Údateztimestamp with time zonez+numeric(%(max_digits)s, %(decimal_places)s)Úintervalzdouble precisionÚintegerZbigintZinetZjsonbZsmallintZsmallserialÚtextÚtimeÚuuid)Z	AutoFieldZBigAutoFieldZBinaryFieldZBooleanFieldZ	CharFieldZ	DateFieldZDateTimeFieldZDecimalFieldZDurationFieldZ	FileFieldZFilePathFieldZ
FloatFieldZIntegerFieldZBigIntegerFieldZIPAddressFieldZGenericIPAddressFieldZ	JSONFieldZNullBooleanFieldZOneToOneFieldÚPositiveBigIntegerFieldÚPositiveIntegerFieldÚPositiveSmallIntegerFieldZ	SlugFieldZSmallAutoFieldZSmallIntegerFieldZ	TextFieldZ	TimeFieldZ	UUIDFieldz"%(column)s" >= 0)r*   r+   r,   z= %sz= UPPER(%s)zLIKE %szLIKE UPPER(%s)z~ %sz~* %sz> %sz>= %sz< %sz<= %s)ÚexactZiexactÚcontainsÚ	icontainsÚregexZiregexÚgtZgteÚltZlteÚ
startswithÚendswithÚistartswithÚ	iendswithzKREPLACE(REPLACE(REPLACE({}, E'\\', E'\\\\'), E'%%', E'\\%%'), E'_', E'\\_')zLIKE '%%' || {} || '%%'zLIKE '%%' || UPPER({}) || '%%'zLIKE {} || '%%'zLIKE UPPER({}) || '%%'zLIKE '%%' || {}zLIKE '%%' || UPPER({}))r.   r/   r3   r5   r4   r6   r   c             C   sÐ   | j }|d dkrtdƒ‚t|d p&dƒ| j ¡ krXtd|d t|d ƒ| j ¡ f ƒ‚d|d pddi|d –}| dd ¡ |d	 r�|d	 |d
< |d r¤|d |d< |d r¸|d |d< |d rÌ|d |d< |S )NÚNAMEÚ zJsettings.DATABASES is improperly configured. Please supply the NAME value.z‡The database name '%s' (%d characters) is longer than PostgreSQL's limit of %d characters. Supply a shorter NAME in settings.DATABASES.ZdatabaseÚpostgresÚOPTIONSÚisolation_levelÚUSERÚuserZPASSWORDÚpasswordZHOSTÚhostZPORTÚport)Úsettings_dictr   ÚlenÚopsZmax_name_lengthÚpop)ÚselfrA   Úconn_paramsr   r   r   Úget_connection_params™   s,    

z%DatabaseWrapper.get_connection_paramsc             C   st   t jf |Ž}| jd }y|d | _W n tk
r@   |j| _Y nX | j|jkr\|j| jd� tjj|dd„ d� |S )Nr:   r;   )r;   c             S   s   | S )Nr   )Úxr   r   r   Ú<lambda>Î   ó    z4DatabaseWrapper.get_new_connection.<locals>.<lambda>)Zconn_or_cursÚloads)	ÚDatabaseÚconnectrA   r;   ÚKeyErrorZset_sessionr   ÚextrasZregister_default_jsonb)rE   rF   Ú
connectionÚoptionsr   r   r   Úget_new_connection¹   s    
z"DatabaseWrapper.get_new_connectionc          	   C   s^   | j d krdS | j  d¡}| j}|rZ||krZ| j  ¡ �}| | j ¡ |g¡ W d Q R X dS dS )NFZTimeZoneT)rP   Zget_parameter_statusÚtimezone_nameÚcursorÚexecuterC   Zset_time_zone_sql)rE   Zconn_timezone_namerS   rT   r   r   r   Úensure_timezoneÑ   s    
zDatabaseWrapper.ensure_timezonec             C   s.   | j  d¡ |  ¡ }|r*|  ¡ s*| j  ¡  d S )NÚUTF8)rP   Zset_client_encodingrV   Zget_autocommitÚcommit)rE   Ztimezone_changedr   r   r   Úinit_connection_stateÜ   s
    z%DatabaseWrapper.init_connection_stateNc             C   s<   |r| j j|d| j jd�}n
| j  ¡ }tjr2| jnd |_|S )NF)Z
scrollableZwithhold)rP   rT   Ú
autocommitr   ZUSE_TZÚtzinfo_factory)rE   ÚnamerT   r   r   r   Úcreate_cursorå   s
    
zDatabaseWrapper.create_cursorc             C   s   | j S )N)Útimezone)rE   Úoffsetr   r   r   r[   ð   s    zDatabaseWrapper.tzinfo_factoryc             C   s~   |  j d7  _ y"ttdƒr$t ¡ }n
tj ¡ }W n tk
rH   d }Y nX |r\tt|ƒƒ}nd}| jdt	 
¡ j|| j f d�S )Nr   Úcurrent_taskÚsyncz_django_curs_%d_%s_%d)r\   )Ú_named_cursor_idxÚhasattrÚasyncior`   ZTaskÚRuntimeErrorÚstrÚidZ_cursorÚ	threadingÚcurrent_threadÚident)rE   r`   Z
task_identr   r   r   Úchunked_cursoró   s    


zDatabaseWrapper.chunked_cursorc          	   C   s   | j � || j_W d Q R X d S )N)Zwrap_database_errorsrP   rZ   )rE   rZ   r   r   r   Ú_set_autocommit  s    zDatabaseWrapper._set_autocommitc          	   C   s,   |   ¡ �}| d¡ | d¡ W dQ R X dS )zl
        Check constraints by setting them to immediate. Return them to deferred
        afterward.
        zSET CONSTRAINTS ALL IMMEDIATEzSET CONSTRAINTS ALL DEFERREDN)rT   rU   )rE   Ztable_namesrT   r   r   r   Úcheck_constraints  s    

z!DatabaseWrapper.check_constraintsc          	   C   sD   y$| j  ¡ �}| d¡ W d Q R X W n tjk
r:   dS X dS d S )NzSELECT 1FT)rP   rT   rU   rL   ÚError)rE   rT   r   r   r   Ú	is_usable   s    zDatabaseWrapper.is_usablec             #   sÄ   y t ƒ  ¡ �}|V  W d Q R X W nž tjtfk
r¾   t dt¡ xvt 	¡ D ]h}|j
dkrL|jd dkrL| j| jd|jd i–| jd�}z| ¡ �}|V  W d Q R X W d | ¡  X P qLW ‚ Y nX d S )Na8  Normally Django will use a connection to the 'postgres' database to avoid running initialization queries against the production database when it's not needed (for example, when running tests). Django was unable to create a connection to the 'postgres' database and will use the first PostgreSQL database instead.r!   r7   r9   )Úalias)ÚsuperÚ_nodb_cursorrL   r   ÚWrappedDatabaseErrorÚwarningsÚwarnÚRuntimeWarningr   ÚallÚvendorrA   Ú	__class__rp   rT   Úclose)rE   rT   rP   Úconn)ry   r   r   rr   *  s$    


zDatabaseWrapper._nodb_cursorc          	   C   s   |   ¡ �
 | jjS Q R X d S )N)Ztemporary_connectionrP   Zserver_version)rE   r   r   r   Ú
pg_versionG  s    
zDatabaseWrapper.pg_versionc             C   s
   t || ƒS )N)r   )rE   rT   r   r   r   Úmake_debug_cursorL  s    z!DatabaseWrapper.make_debug_cursor)N)N))Ú__name__Ú
__module__Ú__qualname__rx   Zdisplay_nameZ
data_typesZdata_type_check_constraintsÚ	operatorsZpattern_escZpattern_opsrL   r   ZSchemaEditorClassr   Zclient_classr   Zcreation_classr   Zfeatures_classr   Zintrospection_classr   Z	ops_classrb   rG   r	   rR   rV   rY   r]   r[   rk   rl   rm   ro   r   rr   r
   r|   r}   Ú__classcell__r   r   )ry   r   r    A   s˜    	
 
	
r    c               @   s   e Zd Zdd„ Zdd„ ZdS )r   c          	   G   s*   |   |¡� | jj||f|žŽ S Q R X d S )N)Ú	debug_sqlrT   Úcopy_expert)rE   ÚsqlÚfileÚargsr   r   r   r„   Q  s    zCursorDebugWrapper.copy_expertc          	   O   s2   | j d| d�� | jj||f|ž|ŽS Q R X d S )NzCOPY %s TO STDOUT)r…   )rƒ   rT   Úcopy_to)rE   r†   Útabler‡   Úkwargsr   r   r   rˆ   U  s    zCursorDebugWrapper.copy_toN)r~   r   r€   r„   rˆ   r   r   r   r   r   P  s   r   );Ú__doc__rd   rh   rt   Ú
contextlibr   Zdjango.confr   Zdjango.core.exceptionsr   Z	django.dbr   rs   r   Zdjango.db.backends.base.baser   Zdjango.db.backends.utilsr   ZBaseCursorDebugWrapperZdjango.utils.asyncior	   Zdjango.utils.functionalr
   Zdjango.utils.safestringr   Zdjango.utils.versionr   r   rL   Zpsycopg2.extensionsZpsycopg2.extrasÚImportErrorÚer   ZPSYCOPG2_VERSIONr   Úclientr   Zcreationr   Úfeaturesr   Zintrospectionr   Ú
operationsr   Zschemar   Ú
extensionsZregister_adapterÚQuotedStringrO   Zregister_uuidZINETARRAY_OIDZnew_array_typeÚUNICODEr   Zregister_typer    r   r   r   r   Ú<module>   sR   


  