o
    [hA                  
   @   sR  d 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 zdd	lZW n eyC Z zed
ed	Z[ww 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" ddl#m$Z$ ddl%m&Z& ej'Z(e(dk redej) i eej*ej+iZ,edZ-G dd dZ.G dd de	Z/d	S )za
MySQL database backend for Django.

Requires mysqlclient: https://pypi.org/project/mysqlclient/
    )ImproperlyConfigured)IntegrityError)utils)BaseDatabaseWrapper)async_unsafe)cached_property)_lazy_re_compileNz:Error loading MySQLdb module.
Did you install mysqlclient?)CLIENT
FIELD_TYPE)conversions   )DatabaseClient)DatabaseCreation)DatabaseFeatures)DatabaseIntrospection)DatabaseOperations)DatabaseSchemaEditor)DatabaseValidation)r         z4mysqlclient 1.4.3 or newer is required; you have %s.z(\d{1,2})\.(\d{1,2})\.(\d{1,2})c                   @   s>   e Zd ZdZdZdd ZdddZdd	 Zd
d Zdd Z	dS )CursorWrappera6  
    A thin wrapper around MySQLdb's normal cursor class that catches particular
    exception instances and reraises them with the correct types.

    Implemented as a wrapper, rather than a subclass, so that it isn't stuck
    to the particular underlying representation returned by Connection.cursor().
    )i  i  i  i  c                 C   s
   || _ d S N)cursorselfr    r   /home/ubuntu/experiments/live_experiments/Pythonexperiments/Otree/venv/lib/python3.10/site-packages/django/db/backends/mysql/base.py__init__F      
zCursorWrapper.__init__Nc              
   C   L   z| j ||W S  tjy% } z|jd | jv r tt|j  d }~ww Nr   )r   executeDatabaseOperationalErrorargscodes_for_integrityerrorr   tupler   queryr$   er   r   r   r!   I   s   zCursorWrapper.executec              
   C   r   r    )r   executemanyr"   r#   r$   r%   r   r&   r'   r   r   r   r*   T   s   zCursorWrapper.executemanyc                 C   s   t | j|S r   )getattrr   )r   attrr   r   r   __getattr__^   s   zCursorWrapper.__getattr__c                 C   s
   t | jS r   )iterr   r   r   r   r   __iter__a   r   zCursorWrapper.__iter__r   )
__name__
__module____qualname____doc__r%   r   r!   r*   r-   r0   r   r   r   r   r   6   s    

r   c                       s  e Zd ZdZi 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ddddd dd!d"d#dd$d%d&d'd(d)
Zed*d+ Zd,Zd-d.d/d.d0d1d2d3d/d/d.d.d4Zd5Z	d6d7d8d9d:d;d<Z
h d=ZeZeZeZeZeZeZeZeZd>d? Zd@dA ZedBdC Z fdDdEZedcdGdHZ dIdJ Z!dKdL Z"dMdN Z#dOdP Z$dcdQdRZ%dSdT Z&edUdV Z'edWdX Z(edYdZ Z)ed[d\ Z*ed]d^ Z+ed_d` Z,edadb Z-  Z.S )dDatabaseWrappermysqlZ	AutoFieldzinteger AUTO_INCREMENTZBigAutoFieldzbigint AUTO_INCREMENTZBinaryFieldlongblobZBooleanFieldboolZ	CharFieldzvarchar(%(max_length)s)Z	DateFielddateZDateTimeFieldzdatetime(6)ZDecimalFieldz+numeric(%(max_digits)s, %(decimal_places)s)ZDurationFieldZbigintZ	FileFieldZFilePathFieldZ
FloatFieldzdouble precisionZIntegerFieldintegerZBigIntegerFieldZIPAddressFieldzchar(15)ZGenericIPAddressFieldzchar(39)Z	JSONFieldjsonzbigint UNSIGNEDzinteger UNSIGNEDzsmallint UNSIGNEDzsmallint AUTO_INCREMENTZsmallintlongtextztime(6)zchar(32))
ZOneToOneFieldPositiveBigIntegerFieldPositiveIntegerFieldPositiveSmallIntegerFieldZ	SlugFieldZSmallAutoFieldZSmallIntegerFieldZ	TextFieldZ	TimeField	UUIDFieldc                 C   s   | j  }| jjrd|d< |S )Nuuidr@   )_data_typescopyfeaturesZhas_native_uuid_field)r   rB   r   r   r   
data_types   s   
zDatabaseWrapper.data_types)	ZtinyblobZblobZ
mediumblobr7   ZtinytexttextZ
mediumtextr<   r;   z= %szLIKE %szLIKE BINARY %sz> %sz>= %sz< %sz<= %s)exactZiexactcontains	icontainsgtZgteltZlte
startswithendswithistartswith	iendswithzCREPLACE(REPLACE(REPLACE({}, '\\', '\\\\'), '%%', '\%%'), '_', '\_')z"LIKE BINARY CONCAT('%%', {}, '%%')zLIKE CONCAT('%%', {}, '%%')zLIKE BINARY CONCAT({}, '%%')zLIKE CONCAT({}, '%%')zLIKE BINARY CONCAT('%%', {})zLIKE CONCAT('%%', {}))rH   rI   rL   rN   rM   rO   >   read committedzread uncommittedzrepeatable readZserializablec                 C   s   | j S r   )mysql_versionr/   r   r   r   get_database_version   s   z$DatabaseWrapper.get_database_versionc                 C   s  t dd}| j}|d r|d |d< |d r|d |d< |d r&|d |d< |d	 d
r4|d	 |d< n
|d	 r>|d	 |d< |d rJt|d |d< tj|d< |d  }|dd}|ry| }|| j	vryt
d|ddd t| j	D f || _|| |S )NZutf8mb4)convcharsetUSERuserNAMEZdatabaseZPASSWORDpasswordZHOST/Zunix_sockethostZPORTportZclient_flagOPTIONSisolation_levelrP   zKInvalid transaction isolation level '%s' specified.
Use one of %s, or None.z, c                 s   s    | ]}d | V  qdS )z'%s'Nr   ).0sr   r   r   	<genexpr>       z8DatabaseWrapper.get_connection_params.<locals>.<genexpr>)django_conversionssettings_dictrL   intr	   Z
FOUND_ROWSrC   poplowerisolation_levelsr   joinsortedr]   update)r   kwargsrc   optionsr]   r   r   r   get_connection_params   s@   


z%DatabaseWrapper.get_connection_paramsc                 C   s0   t jdi |}|jttu r|jt |S )Nr   )r"   connectencodersgetbytesre   )r   Zconn_params
connectionr   r   r   get_new_connection   s   z"DatabaseWrapper.get_new_connectionc                    s   t    g }| jjr|d | jr|d| j   |r>|  }|d	| W d    d S 1 s7w   Y  d S d S )NzSET SQL_AUTO_IS_NULL = 0z*SET SESSION TRANSACTION ISOLATION LEVEL %sz; )
superinit_connection_staterD   Zis_sql_auto_is_null_enabledappendr]   upperr   r!   rh   )r   Zassignmentsr   	__class__r   r   ru   	  s   


"z%DatabaseWrapper.init_connection_stateNc                 C   s   | j  }t|S r   )rr   r   r   )r   namer   r   r   r   create_cursor  s   
zDatabaseWrapper.create_cursorc                 C   s(   zt |  W d S  tjy   Y d S w r   )r   	_rollbackr"   ZNotSupportedErrorr/   r   r   r   r|   "  s
   zDatabaseWrapper._rollbackc                 C   s8   | j  | j| W d    d S 1 sw   Y  d S r   )Zwrap_database_errorsrr   
autocommit)r   r}   r   r   r   _set_autocommit(  s   "zDatabaseWrapper._set_autocommitc                 C   s8   |   }|d W d   dS 1 sw   Y  dS )z
        Disable foreign key checks, primarily for use in adding rows with
        forward references. Always return True to indicate constraint checks
        need to be re-enabled.
        zSET foreign_key_checks=0NT)r   r!   r   r   r   r   disable_constraint_checking,  s   

z+DatabaseWrapper.disable_constraint_checkingc                 C   sb   d| j | _ }z%|  }|d W d   n1 sw   Y  W || _ dS W || _ dS || _ w )zM
        Re-enable foreign key checks after they have been disabled.
        FzSET foreign_key_checks=1N)needs_rollbackr   r!   )r   r   r   r   r   r   enable_constraint_checking6  s   

z*DatabaseWrapper.enable_constraint_checkingc           
      C   s   |   Z}|du r| j|}|D ]D}| j||}|sq| j||}| D ],\}\}}|d||||||||f  | D ]}	td||	d |||	d ||f q(qW d   dS 1 saw   Y  dS )a]  
        Check each table name in `table_names` for rows with invalid foreign
        key references. This method is intended to be used in conjunction with
        `disable_constraint_checking()` and `enable_constraint_checking()`, to
        determine if rows with invalid references were entered while constraint
        checks were off.
        Na0  
                        SELECT REFERRING.`%s`, REFERRING.`%s` FROM `%s` as REFERRING
                        LEFT JOIN `%s` as REFERRED
                        ON (REFERRING.`%s` = REFERRED.`%s`)
                        WHERE REFERRING.`%s` IS NOT NULL AND REFERRED.`%s` IS NULL
                        zThe row in table '%s' with primary key '%s' has an invalid foreign key: %s.%s contains a value '%s' that does not have a corresponding value in %s.%s.r   r   )	r   introspectiontable_namesZget_primary_key_columnZget_relationsitemsr!   Zfetchallr   )
r   r   r   Z
table_nameZprimary_key_column_nameZ	relationsZcolumn_nameZreferenced_column_nameZreferenced_table_nameZbad_rowr   r   r   check_constraintsC  sX   

"z!DatabaseWrapper.check_constraintsc                 C   s(   z| j   W dS  tjy   Y dS w )NFT)rr   Zpingr"   Errorr/   r   r   r   	is_usable{  s   zDatabaseWrapper.is_usablec                 C   s   | j rdS dS )NZMariaDBMySQL)mysql_is_mariadbr/   r   r   r   display_name     zDatabaseWrapper.display_namec                 C   s   | j jrdddd}|S i S )Nz`%(column)s` >= 0)r=   r>   r?   )rD   Z!supports_column_check_constraints)r   r   r   r   r   data_type_check_constraints  s   z+DatabaseWrapper.data_type_check_constraintsc                 C   sp   |   }|d | }W d    n1 sw   Y  |d |d |d t|d t|d t|d dS )	Na2  
                SELECT VERSION(),
                       @@sql_mode,
                       @@default_storage_engine,
                       @@sql_auto_is_null,
                       @@lower_case_table_names,
                       CONVERT_TZ('2001-01-01 01:00:00', 'UTC', 'UTC') IS NOT NULL
            r   r      r   r      )versionsql_modeZdefault_storage_engineZsql_auto_is_nullZlower_case_table_namesZhas_zoneinfo_database)Ztemporary_connectionr!   Zfetchoner8   )r   r   rowr   r   r   mysql_server_data  s   





z!DatabaseWrapper.mysql_server_datac                 C   s
   | j d S )Nr   )r   r/   r   r   r   mysql_server_info  s   
z!DatabaseWrapper.mysql_server_infoc                 C   s4   t | j}|std| j tdd | D S )Nz8Unable to determine MySQL version from version string %rc                 s   s    | ]}t |V  qd S r   )rd   )r^   xr   r   r   r`     ra   z0DatabaseWrapper.mysql_version.<locals>.<genexpr>)server_version_rematchr   	Exceptionr&   groups)r   r   r   r   r   rQ     s   zDatabaseWrapper.mysql_versionc                 C   s   d| j  v S )NZmariadb)r   rf   r/   r   r   r   r     r   z DatabaseWrapper.mysql_is_mariadbc                 C   s"   | j d }t|r|dS dS )Nr   ,r   )r   setsplit)r   r   r   r   r   r     s   
zDatabaseWrapper.sql_moder   )/r1   r2   r3   vendorrB   r   rE   Z_limited_data_types	operatorsZpattern_escZpattern_opsrg   r"   r   ZSchemaEditorClassr   Zclient_classr   Zcreation_classr   Zfeatures_classr   Zintrospection_classr   Z	ops_classr   Zvalidation_classrR   rm   r   rs   ru   r{   r|   r~   r   r   r   r   r   r   r   r   rQ   r   r   __classcell__r   r   rx   r   r5   e   s    	

	'



8





	
r5   )0r4   Zdjango.core.exceptionsr   Z	django.dbr   Zdjango.db.backendsr   Zbackend_utilsZdjango.db.backends.base.baser   Zdjango.utils.asyncior   Zdjango.utils.functionalr   Zdjango.utils.regex_helperr   ZMySQLdbr"   ImportErrorerrZMySQLdb.constantsr	   r
   ZMySQLdb.convertersr   clientr   Zcreationr   rD   r   r   r   
operationsr   Zschemar   Z
validationr   version_infor   __version__ZTIMEZtypecast_timerb   r   r   r5   r   r   r   r   <module>   sP    
/