o
    Rc&                     @   s   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 G d
d dZG dd deZG dd deZG dd deZG dd dZG dd deZeZdS )uV  
.. dialect:: mysql+aiomysql
    :name: aiomysql
    :dbapi: aiomysql
    :connectstring: mysql+aiomysql://user:password@host:port/dbname[?key=value&key=value...]
    :url: https://github.com/aio-libs/aiomysql

.. warning:: The aiomysql dialect is not currently tested as part of
   SQLAlchemy’s continuous integration. As of September, 2021 the driver
   appears to be unmaintained and no longer functions for Python version 3.10,
   and additionally depends on a significantly outdated version of PyMySQL.
   Please refer to the :ref:`asyncmy` dialect for current MySQL/MariaDB asyncio
   functionality.

The aiomysql dialect is SQLAlchemy's second Python asyncio dialect.

Using a special asyncio mediation layer, the aiomysql dialect is usable
as the backend for the :ref:`SQLAlchemy asyncio <asyncio_toplevel>`
extension package.

This dialect should normally be used only with the
:func:`_asyncio.create_async_engine` engine creation function::

    from sqlalchemy.ext.asyncio import create_async_engine
    engine = create_async_engine("mysql+aiomysql://user:pass@hostname/dbname?charset=utf8mb4")


   )MySQLDialect_pymysql   )pool)util)AdaptedConnection)asyncio)await_fallback)
await_onlyc                   @   s   e Zd ZdZdZdd Zedd Zedd Zed	d
 Z	e	j
dd
 Z	edd Zdd Zd#ddZdd Zdd Zdd Zdd Zdd Zdd Zd#dd Zd!d" ZdS )$AsyncAdapt_aiomysql_cursorF)_adapt_connection_connectionawait__cursor_rowsc                 C   s:   || _ |j| _|j| _| j }| | | _g | _d S N)r   r   r   cursor
__aenter__r   r   selfZadapt_connectionr    r   DD:\Flask\env\Lib\site-packages\sqlalchemy/dialects/mysql/aiomysql.py__init__7   s   

z#AsyncAdapt_aiomysql_cursor.__init__c                 C      | j jS r   )r   descriptionr   r   r   r   r   B      z&AsyncAdapt_aiomysql_cursor.descriptionc                 C   r   r   )r   rowcountr   r   r   r   r   F   r   z#AsyncAdapt_aiomysql_cursor.rowcountc                 C   r   r   r   	arraysizer   r   r   r   r   J   r   z$AsyncAdapt_aiomysql_cursor.arraysizec                 C   s   || j _d S r   r   r   valuer   r   r   r   N   s   c                 C   r   r   )r   	lastrowidr   r   r   r   r!   R   r   z$AsyncAdapt_aiomysql_cursor.lastrowidc                 C   s   g | j d d < d S r   r   r   r   r   r   closeV   s   z AsyncAdapt_aiomysql_cursor.closeNc                 C      |  | ||S r   )r   _execute_async)r   	operation
parametersr   r   r   execute`      z"AsyncAdapt_aiomysql_cursor.executec                 C   r$   r   )r   _executemany_asyncr   r&   Zseq_of_parametersr   r   r   executemanyc   s   
z&AsyncAdapt_aiomysql_cursor.executemanyc              	      s   | j j4 I d H 3 |d u r| j|I d H }n
| j||I d H }| js0t| j I d H | _|W  d   I d H  S 1 I d H sBw   Y  d S r   )r   _execute_mutexr   r(   server_sidelistfetchallr   )r   r&   r'   resultr   r   r   r%   h   s   0z)AsyncAdapt_aiomysql_cursor._execute_asyncc              	      sV   | j j4 I d H  | j||I d H W  d   I d H  S 1 I d H s$w   Y  d S r   )r   r-   r   r,   r+   r   r   r   r*   w   s   0z-AsyncAdapt_aiomysql_cursor._executemany_asyncc                 G   s   d S r   r   )r   Z
inputsizesr   r   r   setinputsizes{   s   z(AsyncAdapt_aiomysql_cursor.setinputsizesc                 c   s$    | j r| j dV  | j sd S d S N    r   popr   r   r   r   __iter__~   s   z#AsyncAdapt_aiomysql_cursor.__iter__c                 C   s   | j r	| j dS d S r3   r5   r   r   r   r   fetchone   s   z#AsyncAdapt_aiomysql_cursor.fetchonec                 C   s8   |d u r| j }| jd| }| j|d  | jd d < |S r3   )r   r   )r   sizeretvalr   r   r   	fetchmany   s
   z$AsyncAdapt_aiomysql_cursor.fetchmanyc                 C   s    | j d d  }g | j d d < |S r   r"   )r   r:   r   r   r   r0      s   z#AsyncAdapt_aiomysql_cursor.fetchallr   )__name__
__module____qualname__r.   	__slots__r   propertyr   r   r   setterr!   r#   r(   r,   r%   r*   r2   r7   r8   r;   r0   r   r   r   r   r
   -   s0    







r
   c                   @   s>   e Zd ZdZdZdd Zdd Zdd Zdd
dZdd Z	d	S )AsyncAdapt_aiomysql_ss_cursorr   Tc                 C   s<   || _ |j| _|j| _| j|jjj}| | | _d S r   )	r   r   r   r   dbapiaiomysqlZSSCursorr   r   r   r   r   r   r      s   z&AsyncAdapt_aiomysql_ss_cursor.__init__c                 C   s(   | j d ur| | j   d | _ d S d S r   )r   r   r#   r   r   r   r   r#      s   

z#AsyncAdapt_aiomysql_ss_cursor.closec                 C      |  | j S r   )r   r   r8   r   r   r   r   r8         z&AsyncAdapt_aiomysql_ss_cursor.fetchoneNc                 C   s   |  | jj|dS )N)r9   )r   r   r;   )r   r9   r   r   r   r;         z'AsyncAdapt_aiomysql_ss_cursor.fetchmanyc                 C   rE   r   )r   r   r0   r   r   r   r   r0      rF   z&AsyncAdapt_aiomysql_ss_cursor.fetchallr   )
r<   r=   r>   r?   r.   r   r#   r8   r;   r0   r   r   r   r   rB      s    
rB   c                   @   sZ   e Zd ZeeZdZdd Zdd Zdd Z	dd	 Z
dddZdd Zdd Zdd ZdS )AsyncAdapt_aiomysql_connection)rC   r   r-   c                 C   s   || _ || _t | _d S r   )rC   r   r   Lockr-   )r   rC   
connectionr   r   r   r      s   z'AsyncAdapt_aiomysql_connection.__init__c                 C   s   |  | j|S r   )r   r   ping)r   Z	reconnectr   r   r   rK      r)   z#AsyncAdapt_aiomysql_connection.pingc                 C   s
   | j  S r   )r   character_set_namer   r   r   r   rL      s   
z1AsyncAdapt_aiomysql_connection.character_set_namec                 C   s   |  | j| d S r   )r   r   
autocommitr   r   r   r   rM      s   z)AsyncAdapt_aiomysql_connection.autocommitFc                 C   s   |rt | S t| S r   )rB   r
   )r   r.   r   r   r   r      s   z%AsyncAdapt_aiomysql_connection.cursorc                 C      |  | j  d S r   )r   r   rollbackr   r   r   r   rO      rG   z'AsyncAdapt_aiomysql_connection.rollbackc                 C   rN   r   )r   r   commitr   r   r   r   rP      rG   z%AsyncAdapt_aiomysql_connection.commitc                 C   s   | j   d S r   )r   r#   r   r   r   r   r#      s   z$AsyncAdapt_aiomysql_connection.closeN)F)r<   r=   r>   staticmethodr	   r   r?   r   rK   rL   rM   r   rO   rP   r#   r   r   r   r   rH      s    
rH   c                   @   s   e Zd ZdZeeZdS )&AsyncAdaptFallback_aiomysql_connectionr   N)r<   r=   r>   r?   rQ   r   r   r   r   r   r   rR      s    rR   c                   @   s$   e Zd Zdd Zdd Zdd ZdS )AsyncAdapt_aiomysql_dbapic                 C   s   || _ || _d| _|   d S )Nformat)rD   pymysqlZ
paramstyle_init_dbapi_attributes)r   rD   rU   r   r   r   r      s   z"AsyncAdapt_aiomysql_dbapi.__init__c                 C   s@   dD ]}t | |t| j| qdD ]}t | |t| j| qd S )N)WarningErrorInterfaceErrorZ	DataErrorZDatabaseErrorZOperationalErrorrY   ZIntegrityErrorZProgrammingErrorZInternalErrorZNotSupportedError)NUMBERSTRINGZDATETIMEBINARY	TIMESTAMPBinary)setattrgetattrrD   rU   )r   namer   r   r   rV      s
   z0AsyncAdapt_aiomysql_dbapi._init_dbapi_attributesc                 O   sN   | dd}t|rt| t| jj|i |S t| t| jj|i |S Nasync_fallbackF)	r6   r   asboolrR   r   rD   connectrH   r	   )r   argkwrc   r   r   r   re      s   
z!AsyncAdapt_aiomysql_dbapi.connectN)r<   r=   r>   r   rV   re   r   r   r   r   rS      s    rS   c                       sd   e Zd ZdZdZdZeZdZe	dd Z
e	dd Z fddZ fd	d
Zdd Zdd Z  ZS )MySQLDialect_aiomysqlrD   Tc                 C   s   t tdtdS )NrD   rU   )rS   
__import__)clsr   r   r   rC     s   zMySQLDialect_aiomysql.dbapic                 C   s$   |j dd}t|rtjS tjS rb   )querygetr   rd   r   ZFallbackAsyncAdaptedQueuePoolZAsyncAdaptedQueuePool)rj   urlrc   r   r   r   get_pool_class  s   
z$MySQLDialect_aiomysql.get_pool_classc                    s   t t| j|tddddS )Nuserdb)usernameZdatabase)Z_translate_args)superrh   create_connect_argsdict)r   rm   	__class__r   r   rs   &  s   
z)MySQLDialect_aiomysql.create_connect_argsc                    s,   t t| |||rdS t| }d|v S )NTznot connected)rr   rh   is_disconnectstrlower)r   erJ   r   Zstr_eru   r   r   rw   +  s   
z#MySQLDialect_aiomysql.is_disconnectc                 C   s   ddl m} |jS )Nr4   )CLIENT)Zpymysql.constantsr{   Z
FOUND_ROWS)r   r{   r   r   r   _found_rows_client_flag4  s   z-MySQLDialect_aiomysql._found_rows_client_flagc                 C   s   |j S r   )r   )r   rJ   r   r   r   get_driver_connection9  s   z+MySQLDialect_aiomysql.get_driver_connection)r<   r=   r>   ZdriverZsupports_statement_cacheZsupports_server_side_cursorsrB   Z	_sscursoris_asyncclassmethodrC   rn   rs   rw   r|   r}   __classcell__r   r   ru   r   rh     s    

		rh   N)__doc__rU   r    r   r   Zenginer   Zutil.concurrencyr   r   r	   r
   rB   rH   rR   rS   rh   dialectr   r   r   r   <module>   s   i#00