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    8ÄT_4  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
lmZ ddlmZ ddlmZ zddlZddlZddlZW n. ek
râ Z  ze	de  ƒ‚W 5 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-unpacked-wheel-dv63caxw/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/   r0   r4   r6   r5   r7   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selfrB   Úconn_paramsr   r   r   Úget_connection_params™   s:    ÿ
ýþÿ
 
ÿþz%DatabaseWrapper.get_connection_paramsc                 C   st   t jf |Ž}| jd }z|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connectrB   r<   ÚKeyErrorZset_sessionr   ÚextrasZregister_default_jsonb)rF   rG   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 5 Q R X dS dS )NFZTimeZoneT)rR   Zget_parameter_statusÚtimezone_nameÚcursorÚexecuterD   Zset_time_zone_sql)rF   Zconn_timezone_namerU   rV   r   r   r   Úensure_timezoneÑ   s    
zDatabaseWrapper.ensure_timezonec                 C   s.   | j  d¡ |  ¡ }|r*|  ¡ s*| j  ¡  d S )NÚUTF8)rR   Zset_client_encodingrX   Zget_autocommitÚcommit)rF   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)rR   rV   Ú
autocommitr   ZUSE_TZÚtzinfo_factory)rF   ÚnamerV   r   r   r   Úcreate_cursorå   s
    
zDatabaseWrapper.create_cursorc                 C   s   | j S rI   )Útimezone)rF   Úoffsetr   r   r   r]   ð   s    zDatabaseWrapper.tzinfo_factoryc                 C   s~   |  j d7  _ z"ttdƒr$t ¡ }n
tj ¡ }W n tk
rH   d }Y nX |r\tt|ƒƒ}nd}| jdt	 
¡ j|| j f d�S )Nr   Úcurrent_taskÚsyncz_django_curs_%d_%s_%d)r^   )Ú_named_cursor_idxÚhasattrÚasynciorb   ZTaskÚRuntimeErrorÚstrÚidZ_cursorÚ	threadingÚcurrent_threadÚident)rF   rb   Z
task_identr   r   r   Úchunked_cursoró   s"    


üÿzDatabaseWrapper.chunked_cursorc              	   C   s   | j � || j_W 5 Q R X d S rI   )Zwrap_database_errorsrR   r\   )rF   r\   r   r   r   Ú_set_autocommit  s    zDatabaseWrapper._set_autocommitc              	   C   s,   |   ¡ �}| d¡ | d¡ W 5 Q R X dS )zl
        Check constraints by setting them to immediate. Return them to deferred
        afterward.
        zSET CONSTRAINTS ALL IMMEDIATEzSET CONSTRAINTS ALL DEFERREDN)rV   rW   )rF   Ztable_namesrV   r   r   r   Úcheck_constraints  s    

z!DatabaseWrapper.check_constraintsc              	   C   sF   z$| j  ¡ �}| d¡ W 5 Q R X W n tjk
r<   Y dS X dS d S )NzSELECT 1FT)rR   rV   rW   rN   ÚError©rF   rV   r   r   r   Ú	is_usable   s    zDatabaseWrapper.is_usablec                 #   s¼   z t ƒ  ¡ �}|V  W 5 Q R X W n– tjtfk
r¶   t dt¡ t 	¡ D ]f}|j
dkrJ|jd dkrJ| j| jd|jd i–| jd�}z| ¡ �}|V  W 5 Q R X W 5 | ¡  X qJY 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"   r8   r:   )Úalias)ÚsuperÚ_nodb_cursorrN   r   ÚWrappedDatabaseErrorÚwarningsÚwarnÚRuntimeWarningr   ÚallÚvendorrB   Ú	__class__rs   ÚcloserV   )rF   rV   rR   Úconn©r|   r   r   ru   *  s$    úþ
zDatabaseWrapper._nodb_cursorc              
   C   s(   |   ¡ � | jjW  5 Q R £ S Q R X d S rI   )Ztemporary_connectionrR   Zserver_version)rF   r   r   r   Ú
pg_versionD  s    
zDatabaseWrapper.pg_versionc                 C   s
   t || ƒS rI   r   rq   r   r   r   Úmake_debug_cursorI  s    z!DatabaseWrapper.make_debug_cursor)N)N))Ú__name__Ú
__module__Ú__qualname__r{   Zdisplay_nameZ
data_typesZdata_type_check_constraintsÚ	operatorsZpattern_escZpattern_opsrN   r   ZSchemaEditorClassr   Zclient_classr   Zcreation_classr   Zfeatures_classr   Zintrospection_classr   Z	ops_classrd   rH   r
   rT   rX   r[   r_   r]   rm   rn   ro   rr   r   ru   r   r€   r�   Ú__classcell__r   r   r   r   r!   A   s¨   äýòú	 
	


	

r!   c                   @   s   e Zd Zdd„ Zdd„ ZdS )r	   c              
   G   s6   |   |¡�" | jj||f|žŽ W  5 Q R £ S Q R X d S rI   )Ú	debug_sqlrV   Úcopy_expert)rF   ÚsqlÚfileÚargsr   r   r   rˆ   N  s    zCursorDebugWrapper.copy_expertc              
   O   s>   | j d| d��$ | jj||f|ž|ŽW  5 Q R £ S Q R X d S )NzCOPY %s TO STDOUT)r‰   )r‡   rV   Úcopy_to)rF   rŠ   Útabler‹   Úkwargsr   r   r   rŒ   R  s    zCursorDebugWrapper.copy_toN)r‚   rƒ   r„   rˆ   rŒ   r   r   r   r   r	   M  s   r	   );Ú__doc__rf   rj   rw   Ú
contextlibr   Zdjango.confr   Zdjango.core.exceptionsr   Z	django.dbr   rv   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   rN   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QuotedStringrQ   Zregister_uuidZINETARRAY_OIDZnew_array_typeÚUNICODEr    Zregister_typer!   r   r   r   r   Ú<module>   sT   

ý  