o
    ˜¨ÊhB  ã                
   @   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
ƒ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 rŠedej) ƒ‚i e¥ej*ej+i¥Z,edƒZ-G dd„ dƒZ.G dd„ de	ƒZ/d	S )za
MySQL database backend for Django.

Requires mysqlclient: https://pypi.org/project/mysqlclient/
é    )ÚImproperlyConfigured)ÚIntegrityError)Úutils)ÚBaseDatabaseWrapper)Úasync_unsafe)Úcached_property)Ú_lazy_re_compileNz:Error loading MySQLdb module.
Did you install mysqlclient?)ÚCLIENTÚ
FIELD_TYPE)Úconversionsé   )ÚDatabaseClient)ÚDatabaseCreation)ÚDatabaseFeatures)ÚDatabaseIntrospection)ÚDatabaseOperations)ÚDatabaseSchemaEditor)ÚDatabaseValidation)r   é   r   z4mysqlclient 1.4.0 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 )Ú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  iš  ië  i¹  c                 C   s
   || _ d S ©N)Úcursor©Úselfr   © r   úO/var/www/html/env/lib/python3.10/site-packages/django/db/backends/mysql/base.pyÚ__init__E   ó   
zCursorWrapper.__init__Nc              
   C   óL   z| j  ||¡W S  tjy% } z|jd | jv r tt|jƒŽ ‚‚ d }~ww ©Nr   )r   ÚexecuteÚDatabaseÚOperationalErrorÚargsÚcodes_for_integrityerrorr   Útuple©r   Úqueryr#   Úer   r   r   r    H   s   €ûzCursorWrapper.executec              
   C   r   r   )r   Úexecutemanyr!   r"   r#   r$   r   r%   r&   r   r   r   r)   S   s   €ûzCursorWrapper.executemanyc                 C   s   t | j|ƒS r   )Úgetattrr   )r   Úattrr   r   r   Ú__getattr__]   s   zCursorWrapper.__getattr__c                 C   s
   t | jƒS r   )Úiterr   ©r   r   r   r   Ú__iter__`   r   zCursorWrapper.__iter__r   )
Ú__name__Ú
__module__Ú__qualname__Ú__doc__r$   r   r    r)   r,   r/   r   r   r   r   r   5   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$d%d&d'd(d)œ
¥Zd*Zd+d,d-d,d.d/d0d1d-d-d,d,d2œZd3Zd4d5d6d7d8d9d:œZh d;£Z	e
Z
eZeZeZeZeZeZeZd<d=„ Zd>d?„ Zed@dA„ ƒZ‡ fdBdC„ZedadEdF„ƒZdGdH„ ZdIdJ„ Z dKdL„ Z!dMdN„ Z"dadOdP„Z#dQdR„ Z$e%dSdT„ ƒZ&e%dUdV„ ƒZ'e%dWdX„ ƒZ(e%dYdZ„ ƒZ)e%d[d\„ ƒZ*e%d]d^„ ƒZ+e%d_d`„ ƒZ,‡  Z-S )bÚDatabaseWrapperÚmysqlÚ	AutoFieldzinteger AUTO_INCREMENTÚBigAutoFieldzbigint AUTO_INCREMENTÚBinaryFieldÚlongblobÚBooleanFieldÚboolÚ	CharFieldzvarchar(%(max_length)s)Ú	DateFieldÚdateÚDateTimeFieldzdatetime(6)ÚDecimalFieldz+numeric(%(max_digits)s, %(decimal_places)s)ÚDurationFieldÚbigintÚ	FileFieldÚFilePathFieldÚ
FloatFieldzdouble precisionÚIntegerFieldÚintegerÚBigIntegerFieldÚIPAddressFieldzchar(15)ÚGenericIPAddressFieldzchar(39)Ú	JSONFieldÚjsonzbigint UNSIGNEDzinteger UNSIGNEDzsmallint UNSIGNEDzsmallint AUTO_INCREMENTÚsmallintÚlongtextztime(6)zchar(32))
ÚOneToOneFieldÚPositiveBigIntegerFieldÚPositiveIntegerFieldÚPositiveSmallIntegerFieldÚ	SlugFieldÚSmallAutoFieldÚSmallIntegerFieldÚ	TextFieldÚ	TimeFieldÚ	UUIDField)	ÚtinyblobÚblobÚ
mediumblobr9   ÚtinytextÚtextÚ
mediumtextrN   rL   z= %szLIKE %szLIKE BINARY %sz> %sz>= %sz< %sz<= %s)ÚexactÚiexactÚcontainsÚ	icontainsÚgtÚgteÚltÚlteÚ
startswithÚendswithÚistartswithÚ	iendswithzCREPLACE(REPLACE(REPLACE({}, '\\', '\\\\'), '%%', '\%%'), '_', '\_')z"LIKE BINARY CONCAT('%%', {}, '%%')zLIKE CONCAT('%%', {}, '%%')zLIKE BINARY CONCAT({}, '%%')zLIKE CONCAT({}, '%%')zLIKE BINARY CONCAT('%%', {})zLIKE CONCAT('%%', {}))ra   rb   rg   ri   rh   rj   >   úrepeatable readúread uncommittedÚserializableúread committedc                 C   s   | j S r   )Úmysql_versionr.   r   r   r   Úget_database_versionË   s   z$DatabaseWrapper.get_database_versionc                 C   s  t ddœ}| 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 ƒ|d< tj|d< |d  ¡ }| dd¡}|ry| ¡ }|| j	vryt
d|d dd„ t| j	ƒD ƒ¡f ƒ‚|| _| |¡ |S )NÚutf8)ÚconvÚcharsetÚUSERÚuserÚNAMEÚdatabaseÚPASSWORDÚpasswordÚHOSTú/Úunix_socketÚhostÚPORTÚportÚclient_flagÚOPTIONSÚisolation_levelrn   zKInvalid transaction isolation level '%s' specified.
Use one of %s, or None.z, c                 s   s   � | ]}d | V  qdS )z'%s'Nr   )Ú.0Úsr   r   r   Ú	<genexpr>î   ó   € z8DatabaseWrapper.get_connection_params.<locals>.<genexpr>)Údjango_conversionsÚsettings_dictrg   Úintr	   Ú
FOUND_ROWSÚcopyÚpopÚlowerÚisolation_levelsr   ÚjoinÚsortedr‚   Úupdate)r   Úkwargsrˆ   Úoptionsr‚   r   r   r   Úget_connection_paramsÎ   s@   þ

þþÿ
z%DatabaseWrapper.get_connection_paramsc                 C   s0   t jdi |¤Ž}|j t¡tu r|j t¡ |S )Nr   )r!   ÚconnectÚencodersÚgetÚbytesrŒ   )r   Úconn_paramsÚ
connectionr   r   r   Úget_new_connectionõ   s   z"DatabaseWrapper.get_new_connectionc                    s€   t ƒ  ¡  g }| jjr| d¡ | jr| d| j ¡  ¡ |r>|  ¡ �}| d 	|¡¡ W d   ƒ d S 1 s7w   Y  d S d S )NzSET SQL_AUTO_IS_NULL = 0z*SET SESSION TRANSACTION ISOLATION LEVEL %sz; )
ÚsuperÚinit_connection_stateÚfeaturesÚis_sql_auto_is_null_enabledÚappendr‚   Úupperr   r    r�   )r   Úassignmentsr   ©Ú	__class__r   r   r�      s   

ÿÿ
"ÿÿz%DatabaseWrapper.init_connection_stateNc                 C   s   | j  ¡ }t|ƒS r   )rš   r   r   )r   Únamer   r   r   r   Úcreate_cursor  s   
zDatabaseWrapper.create_cursorc                 C   s(   zt  | ¡ W d S  tjy   Y d S w r   )r   Ú	_rollbackr!   ÚNotSupportedErrorr.   r   r   r   r§     s
   ÿzDatabaseWrapper._rollbackc                 C   s8   | j � | j |¡ W d   ƒ d S 1 sw   Y  d S r   )Úwrap_database_errorsrš   Ú
autocommit)r   rª   r   r   r   Ú_set_autocommit  s   "ÿzDatabaseWrapper._set_autocommitc                 C   s8   |   ¡ �}| d¡ W d  ƒ 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   Údisable_constraint_checking#  s   

ÿþz+DatabaseWrapper.disable_constraint_checkingc                 C   sb   d| j | _ }z%|  ¡ �}| d¡ W d  ƒ 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)Úneeds_rollbackr   r    )r   r­   r   r   r   r   Úenable_constraint_checking-  s   
ÿ
ýz*DatabaseWrapper.enable_constraint_checkingc           
      C   sÐ   |   ¡ �Z}|du r| j |¡}|D ]D}| j ||¡}|sq| j ||¡}| ¡ D ],\}\}}| d||||||||f ¡ | ¡ D ]}	td||	d |||	d ||f ƒ‚q(qW d  ƒ 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
                        z–The 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   ÚintrospectionÚtable_namesÚget_primary_key_columnÚget_relationsÚitemsr    Úfetchallr   )
r   r°   r   Ú
table_nameÚprimary_key_column_nameÚ	relationsÚcolumn_nameÚreferenced_column_nameÚreferenced_table_nameÚbad_rowr   r   r   Úcheck_constraints:  sX   
ÿ
ýøúÿùýÿÿêù"ýz!DatabaseWrapper.check_constraintsc                 C   s(   z| j  ¡  W dS  tjy   Y dS w )NFT)rš   Úpingr!   ÚErrorr.   r   r   r   Ú	is_usabler  s   ýÿzDatabaseWrapper.is_usablec                 C   s   | j rdS dS )NÚMariaDBÚMySQL)Úmysql_is_mariadbr.   r   r   r   Údisplay_namez  ó   zDatabaseWrapper.display_namec                 C   s4   | j jrddddœ}| jr| jdk rd|d< |S i S )Nz`%(column)s` >= 0)rP   rQ   rR   )é
   r   é   zJSON_VALID(`%(column)s`)rK   )rž   Ú!supports_column_check_constraintsrÂ   ro   )r   r¼   r   r   r   Údata_type_check_constraints~  s   ýz+DatabaseWrapper.data_type_check_constraintsc                 C   sp   |   ¡ �}| d¡ | ¡ }W d   ƒ n1 sw   Y  |d |d |d t|d ƒt|d ƒt|d ƒdœ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   é   rÆ   r   é   )ÚversionÚsql_modeÚdefault_storage_engineÚsql_auto_is_nullÚlower_case_table_namesÚhas_zoneinfo_database)Útemporary_connectionr    Úfetchoner;   )r   r   Úrowr   r   r   Úmysql_server_data�  s   
ÿ

ò


úz!DatabaseWrapper.mysql_server_datac                 C   s
   | j d S )NrË   )rÔ   r.   r   r   r   Úmysql_server_info§  s   
z!DatabaseWrapper.mysql_server_infoc                 C   s4   t  | j¡}|std| j ƒ‚tdd„ | ¡ D ƒƒS )Nz8Unable to determine MySQL version from version string %rc                 s   s   � | ]}t |ƒV  qd S r   )r‰   )rƒ   Úxr   r   r   r…   ³  r†   z0DatabaseWrapper.mysql_version.<locals>.<genexpr>)Úserver_version_reÚmatchrÕ   Ú	Exceptionr%   Úgroups)r   rØ   r   r   r   ro   «  s   ÿÿzDatabaseWrapper.mysql_versionc                 C   s   d| j  ¡ v S )NÚmariadb)rÕ   r�   r.   r   r   r   rÂ   µ  rÄ   z DatabaseWrapper.mysql_is_mariadbc                 C   s"   | j d }t|r| d¡ƒS dƒS )NrÌ   ú,r   )rÔ   ÚsetÚsplit)r   rÌ   r   r   r   rÌ   ¹  s   
zDatabaseWrapper.sql_moder   ).r0   r1   r2   ÚvendorÚ
data_typesÚ_limited_data_typesÚ	operatorsÚpattern_escÚpattern_opsrŽ   r!   r   ÚSchemaEditorClassr   Úclient_classr   Úcreation_classr   Úfeatures_classr   Úintrospection_classr   Ú	ops_classr   Úvalidation_classrp   r”   r   r›   r�   r¦   r§   r«   r¬   r®   r¼   r¿   r   rÃ   rÈ   rÔ   rÕ   ro   rÂ   rÌ   Ú__classcell__r   r   r£   r   r4   d   sÔ    ÿþýüûúùø	÷
öõôóòñðïå#ôú	'



8




	
r4   )0r3   Údjango.core.exceptionsr   Ú	django.dbr   Údjango.db.backendsr   Úbackend_utilsÚdjango.db.backends.base.baser   Údjango.utils.asyncior   Údjango.utils.functionalr   Údjango.utils.regex_helperr   ÚMySQLdbr!   ÚImportErrorÚerrÚMySQLdb.constantsr	   r
   ÚMySQLdb.convertersr   Úclientr   Úcreationr   rž   r   r¯   r   Ú
operationsr   Úschemar   Ú
validationr   Úversion_inforË   Ú__version__ÚTIMEÚtypecast_timer‡   r×   r   r4   r   r   r   r   Ú<module>   sP    ÿþ€ÿÿÿ
þ/