B
    CVvg   ã               @   sÎ   d dl mZ d dlmZmZ d dlmZ dddddd	d
gZG dd„ deƒZG dd„ deƒZ	G dd„ deƒZ
G dd„ deƒZG dd„ deƒZG dd„ deƒZG dd	„ d	eƒZG dd
„ d
eƒZG dd„ deƒZdS )é    )ÚNotSupportedError)ÚFuncÚIndex)Úcached_propertyÚ
BloomIndexÚ	BrinIndexÚ
BTreeIndexÚGinIndexÚ	GistIndexÚ	HashIndexÚSpGistIndexc                   s:   e Zd Zedd„ ƒZd
‡ fdd„	Zdd„ Zdd	„ Z‡  ZS )ÚPostgresIndexc             C   s   t jtt jƒ t| jƒ S )N)r   Úmax_name_lengthÚlenÚsuffix)Úself© r   úC/tmp/pip-install-o3oxmrkh/Django/django/contrib/postgres/indexes.pyr      s    zPostgresIndex.max_name_lengthÚ c                sX   |   |¡ tƒ j||fdd| j i|—Ž}|  ¡ }|rTdd |¡|jd f |jd< |S )NÚusingz	 USING %szWITH (%s) %sz, Úextra)Úcheck_supportedÚsuperÚ
create_sqlr   Úget_with_paramsÚjoinÚparts)r   ÚmodelÚschema_editorr   ÚkwargsZ	statementÚwith_params)Ú	__class__r   r   r      s    
 zPostgresIndex.create_sqlc             C   s   d S )Nr   )r   r   r   r   r   r       s    zPostgresIndex.check_supportedc             C   s   g S )Nr   )r   r   r   r   r   #   s    zPostgresIndex.get_with_params)r   )	Ú__name__Ú
__module__Ú__qualname__r   r   r   r   r   Ú__classcell__r   r   )r!   r   r      s   r   c                   s<   e Zd ZdZdddœ‡ fdd„
Z‡ fdd„Zd	d
„ Z‡  ZS )r   ZbloomNr   )ÚlengthÚcolumnsc               s¤   t ƒ j||Ž t| jƒdkr$tdƒ‚t|ttfƒs:tdƒ‚t|ƒt| jƒkrTtdƒ‚tdd„ |D ƒƒsntdƒ‚|d k	r”d|  k rŠd	ks”n td
ƒ‚|| _	|| _
d S )Né    z-Bloom indexes support a maximum of 32 fields.z+BloomIndex.columns must be a list or tuple.z7BloomIndex.columns cannot have more values than fields.c             s   s&   | ]}d |  k odkn  V  qdS )r   iÿ  Nr   )Ú.0Úcolr   r   r   ú	<genexpr>4   s    z&BloomIndex.__init__.<locals>.<genexpr>z8BloomIndex.columns must contain integers from 1 to 4095.r   i   z<BloomIndex.length must be None or an integer from 1 to 4096.)r   Ú__init__r   ÚfieldsÚ
ValueErrorÚ
isinstanceÚlistÚtupleÚallr&   r'   )r   r&   r'   Úexpressionsr   )r!   r   r   r,   *   s     zBloomIndex.__init__c                s>   t ƒ  ¡ \}}}| jd k	r$| j|d< | jr4| j|d< |||fS )Nr&   r'   )r   Údeconstructr&   r'   )r   ÚpathÚargsr   )r!   r   r   r4   ?   s    


zBloomIndex.deconstructc             C   sF   g }| j d k	r| d| j  ¡ | jrB| dd„ t| jdd�D ƒ¡ |S )Nzlength = %dc             s   s   | ]\}}d ||f V  qdS )z
col%d = %dNr   )r)   ÚiÚvr   r   r   r+   M   s   z-BloomIndex.get_with_params.<locals>.<genexpr>é   )Ústart)r&   Úappendr'   ÚextendÚ	enumerate)r   r    r   r   r   r   G   s    
zBloomIndex.get_with_params)r"   r#   r$   r   r,   r4   r   r%   r   r   )r!   r   r   '   s   c                   sD   e Zd ZdZdddœ‡ fdd„
Z‡ fdd„Zdd	„ Zd
d„ Z‡  ZS )r   ZbrinN)ÚautosummarizeÚpages_per_rangec               s6   |d k	r|dkrt dƒ‚|| _|| _tƒ j||Ž d S )Nr   z2pages_per_range must be None or a positive integer)r.   r>   r?   r   r,   )r   r>   r?   r3   r   )r!   r   r   r,   V   s
    zBrinIndex.__init__c                sB   t ƒ  ¡ \}}}| jd k	r$| j|d< | jd k	r8| j|d< |||fS )Nr>   r?   )r   r4   r>   r?   )r   r5   r6   r   )r!   r   r   r4   ]   s    



zBrinIndex.deconstructc             C   s   | j r|jjjstdƒ‚d S )Nz2BRIN option autosummarize requires PostgreSQL 10+.)r>   Ú
connectionÚfeaturesZhas_brin_autosummarizer   )r   r   r   r   r   r   e   s    zBrinIndex.check_supportedc             C   sD   g }| j d k	r&| d| j rdnd ¡ | jd k	r@| d| j ¡ |S )Nzautosummarize = %sÚonÚoffzpages_per_range = %d)r>   r;   r?   )r   r    r   r   r   r   i   s    

zBrinIndex.get_with_params)	r"   r#   r$   r   r,   r4   r   r   r%   r   r   )r!   r   r   S   s
   c                   s:   e Zd ZdZddœ‡ fdd„
Z‡ fdd„Zdd	„ Z‡  ZS )
r   ZbtreeN)Ú
fillfactorc               s   || _ tƒ j||Ž d S )N)rD   r   r,   )r   rD   r3   r   )r!   r   r   r,   u   s    zBTreeIndex.__init__c                s.   t ƒ  ¡ \}}}| jd k	r$| j|d< |||fS )NrD   )r   r4   rD   )r   r5   r6   r   )r!   r   r   r4   y   s    

zBTreeIndex.deconstructc             C   s"   g }| j d k	r| d| j  ¡ |S )Nzfillfactor = %d)rD   r;   )r   r    r   r   r   r      s    
zBTreeIndex.get_with_params)r"   r#   r$   r   r,   r4   r   r%   r   r   )r!   r   r   r   s   c                   s<   e Zd ZdZdddœ‡ fdd„
Z‡ fdd„Zdd	„ Z‡  ZS )
r	   ZginN)Ú
fastupdateÚgin_pending_list_limitc               s   || _ || _tƒ j||Ž d S )N)rE   rF   r   r,   )r   rE   rF   r3   r   )r!   r   r   r,   ‰   s    zGinIndex.__init__c                sB   t ƒ  ¡ \}}}| jd k	r$| j|d< | jd k	r8| j|d< |||fS )NrE   rF   )r   r4   rE   rF   )r   r5   r6   r   )r!   r   r   r4   Ž   s    



zGinIndex.deconstructc             C   sD   g }| j d k	r| d| j  ¡ | jd k	r@| d| jr8dnd ¡ |S )Nzgin_pending_list_limit = %dzfastupdate = %srB   rC   )rF   r;   rE   )r   r    r   r   r   r   –   s    

zGinIndex.get_with_params)r"   r#   r$   r   r,   r4   r   r%   r   r   )r!   r   r	   †   s   c                   sD   e Zd ZdZdddœ‡ fdd„
Z‡ fdd„Zdd	„ Zd
d„ Z‡  ZS )r
   ZgistN)Ú	bufferingrD   c               s   || _ || _tƒ j||Ž d S )N)rG   rD   r   r,   )r   rG   rD   r3   r   )r!   r   r   r,   ¢   s    zGistIndex.__init__c                sB   t ƒ  ¡ \}}}| jd k	r$| j|d< | jd k	r8| j|d< |||fS )NrG   rD   )r   r4   rG   rD   )r   r5   r6   r   )r!   r   r   r4   §   s    



zGistIndex.deconstructc             C   sD   g }| j d k	r&| d| j rdnd ¡ | jd k	r@| d| j ¡ |S )Nzbuffering = %srB   rC   zfillfactor = %d)rG   r;   rD   )r   r    r   r   r   r   ¯   s    

zGistIndex.get_with_paramsc             C   s   | j r|jjjstdƒ‚d S )Nz.Covering GiST indexes requires PostgreSQL 12+.)Úincluder@   rA   Zsupports_covering_gist_indexesr   )r   r   r   r   r   r   ·   s    zGistIndex.check_supported)	r"   r#   r$   r   r,   r4   r   r   r%   r   r   )r!   r   r
   Ÿ   s
   c                   s:   e Zd ZdZddœ‡ fdd„
Z‡ fdd„Zdd	„ Z‡  ZS )
r   ÚhashN)rD   c               s   || _ tƒ j||Ž d S )N)rD   r   r,   )r   rD   r3   r   )r!   r   r   r,   ¿   s    zHashIndex.__init__c                s.   t ƒ  ¡ \}}}| jd k	r$| j|d< |||fS )NrD   )r   r4   rD   )r   r5   r6   r   )r!   r   r   r4   Ã   s    

zHashIndex.deconstructc             C   s"   g }| j d k	r| d| j  ¡ |S )Nzfillfactor = %d)rD   r;   )r   r    r   r   r   r   É   s    
zHashIndex.get_with_params)r"   r#   r$   r   r,   r4   r   r%   r   r   )r!   r   r   ¼   s   c                   s:   e Zd ZdZddœ‡ fdd„
Z‡ fdd„Zdd	„ Z‡  ZS )
r   ZspgistN)rD   c               s   || _ tƒ j||Ž d S )N)rD   r   r,   )r   rD   r3   r   )r!   r   r   r,   Ó   s    zSpGistIndex.__init__c                s.   t ƒ  ¡ \}}}| jd k	r$| j|d< |||fS )NrD   )r   r4   rD   )r   r5   r6   r   )r!   r   r   r4   ×   s    

zSpGistIndex.deconstructc             C   s"   g }| j d k	r| d| j  ¡ |S )Nzfillfactor = %d)rD   r;   )r   r    r   r   r   r   Ý   s    
zSpGistIndex.get_with_params)r"   r#   r$   r   r,   r4   r   r%   r   r   )r!   r   r   Ð   s   c                   s    e Zd ZdZ‡ fdd„Z‡  ZS )ÚOpClassz%(expressions)s %(name)sc                s   t ƒ j||d� d S )N)Úname)r   r,   )r   Z
expressionrK   )r!   r   r   r,   ç   s    zOpClass.__init__)r"   r#   r$   Útemplater,   r%   r   r   )r!   r   rJ   ä   s   rJ   N)Z	django.dbr   Zdjango.db.modelsr   r   Zdjango.utils.functionalr   Ú__all__r   r   r   r   r	   r
   r   r   rJ   r   r   r   r   Ú<module>   s   
,