o
    :Zœc­  ã                   @   sJ   d dl Z d dlmZ d dlmZ d dlmZ e  d¡ZG dd„ deƒZ	dS )é    N)ÚGeometryField)ÚDatabaseSchemaEditor)ÚOperationalErrorzdjango.contrib.gisc                       sr   e Zd ZdZdZ‡ fdd„Z‡ fdd„Zd‡ fdd	„	Z‡ fd
d„Z‡ fdd„Z	‡ fdd„Z
dd„ Zdd„ Z‡  ZS )ÚMySQLGISSchemaEditorz7CREATE SPATIAL INDEX %(index)s ON %(table)s(%(column)s)z!DROP INDEX %(index)s ON %(table)sc                    s   t ƒ j|i |¤Ž g | _d S ©N)ÚsuperÚ__init__Úgeometry_sql)ÚselfÚargsÚkwargs©Ú	__class__© úa/var/www/chikooza/env/lib/python3.10/site-packages/django/contrib/gis/db/backends/mysql/schema.pyr      s   
zMySQLGISSchemaEditor.__init__c                    s    t |tƒr
| js
dS tƒ  |¡S )NT)Ú
isinstancer   Ú$_supports_limited_data_type_defaultsr   Úskip_default)r
   Úfieldr   r   r   r      s   z!MySQLGISSchemaEditor.skip_defaultFc                    sl   t ƒ  |||¡}t|tƒr4|jr4|js4| jjj}|j	j
}| j | j||  ||¡ƒ||ƒ||jƒdœ ¡ |S )N)ÚindexÚtableÚcolumn)r   Ú
column_sqlr   r   Úspatial_indexÚnullÚ
connectionÚopsÚ
quote_nameÚ_metaÚdb_tabler	   ÚappendÚsql_add_spatial_indexÚ_create_spatial_index_namer   )r
   Úmodelr   Úinclude_defaultr   Úqnr   r   r   r   r      s   
ýÿzMySQLGISSchemaEditor.column_sqlc                    s   t ƒ  |¡ |  ¡  d S r   )r   Úcreate_modelÚcreate_spatial_indexes)r
   r#   r   r   r   r&   (   s   z!MySQLGISSchemaEditor.create_modelc                    s   t ƒ  ||¡ |  ¡  d S r   )r   Ú	add_fieldr'   ©r
   r#   r   r   r   r   r(   ,   s   zMySQLGISSchemaEditor.add_fieldc                    s~   t |tƒr6|jr6| jjj}| j||  ||¡ƒ||jj	ƒdœ }z|  
|¡ W n ty5   t d|¡ Y nw tƒ  ||¡ d S )N)r   r   z`Couldn't remove spatial index: %s (may be expected if your storage engine doesn't support them).)r   r   r   r   r   r   Úsql_drop_spatial_indexr"   r   r   Úexecuter   ÚloggerÚerrorr   Úremove_field)r
   r#   r   r%   Úsqlr   r   r   r.   0   s   

þþÿz!MySQLGISSchemaEditor.remove_fieldc                 C   s   d|j j|jf S )Nz%s_%s_id)r   r   r   r)   r   r   r   r"   A   s   z/MySQLGISSchemaEditor._create_spatial_index_namec              	   C   sB   | j D ]}z|  |¡ W q ty   t d|¡ Y qw g | _ d S )NzXCannot create SPATIAL INDEX %s. Only MyISAM and (as of MySQL 5.7.5) InnoDB support them.)r	   r+   r   r,   r-   )r
   r/   r   r   r   r'   D   s   
þÿ
z+MySQLGISSchemaEditor.create_spatial_indexes)F)Ú__name__Ú
__module__Ú__qualname__r!   r*   r   r   r   r&   r(   r.   r"   r'   Ú__classcell__r   r   r   r   r   
   s    r   )
ÚloggingÚ#django.contrib.gis.db.models.fieldsr   Údjango.db.backends.mysql.schemar   Údjango.db.utilsr   Ú	getLoggerr,   r   r   r   r   r   Ú<module>   s    
